QSX15 Regional Offices - International

Section S - Service Assistance Page S-33

Southeast Asia Regional Office - Singapore

Singapore
Cummins Diesel Sales Corporation
8 Tanjong Penjuru
ZIP/Postal Code: 609019
Singapore •"'•'V, .... : •;; :

Telephone: (65) 265-0155

Fax - Parts/MIS/Shipping: (65) 6264-0664

Countries
Covered: Bangladesh Malaysia
Brunei
Philippines
Cambodia Singapore
Sri Lanka
Indonesia Thailand
Laos Vietnam

Latin America Regional Office - Miramar (U.S.A.)

Cummins Americas, Inc.
3350 SW148 Avenue
Suite 205
Miramar, FL 33027
U.S.A.
Telephone: (954) 431-5511
Fax: (954) 433-5797

Countries
Covered: .Argentina
Bolivia
Chile
Colombia
Paraguay
Dominican Peru
Republic Uruguay
El Salvador Venezuela
Eucador
Costa Rica Honduras
Dominican Nicaragua
Distributors - International QSX15
Page S-50 Section S - Service Assistance

INDIA New Delhi Cummins India Ltd.

911-912, Hemkunt Tower,
98 Nehru Place
New Delhi, Delhi 110019
India
Telephone: (91-11) 26431051 / 26445756 /
26445759/26416947
Fax: (91-11)26212817

INDIA Raipur Cummins India Ltd.

Vanijya Bhavan' 1st Floor, Sai Nagar Fafadih
Devendra Nagar Road
Raipur, Madhya Pradesh 492009
India
Telephone: (91-771)2521101 / 2521102
Fax: (91-771)2521103
INDIA Ranchi Cummins India Ltd.
'Shanti Kunj' C-202, Vidyalaya Marg
Road No. 01, Ashok Nagar,
Ranchi, Jharkhand 834002
India
Telephone: (91-651) 2241948 / 2241521
Fax: (91-651)2242815

INDONESIA Jakarta P.T. Alltrak 1978

J1. R.S.C. Veteran No. 4
Bintaro, Rempoa
Jakarta 12330
Indonesia
Telephone: (62-21) 736-1978 / 3301 / 5085
Fax: (62-21) 736-1977 / 3302

IRAQ - See Middle East Regional Office or United Arab

Emirates

IRAQ Cummins Emirates Sales & Service LLC

P.O. Box No 54044
Al Quoz Industrial Estate, Dubai
United Arab Emirates
Telephone: 00 9714 3478184
Fax: 00 9714 3478185
Toll Free: 800 4184

IRELAND Wellingborough (Office in Cummins UK

England) Rutherford Drive
Park Farm South
Wellingborough, Northants NN8 6AN
United Kingdom
Telephone: (44-1933) 334200
Fax: (44-1933) 334198

ISRAEL Tel Aviv Israel Engines & Trailers

33 Hahashmal Street
Tel Aviv 61003
Israel
Telephone: (972-3) 7106222
Fax: (972-3) 5604540
QSX15
Section ES - Engine Storage Page 308-a

Section E S - Engine Storage

Section Contents
Page
Engine Storage - Long Term 308-1
General Information 308-1
QSX15
Engine Storage - Long Term
Section E S - Engine Storage
Page 308-1

Engine Storage - Long Term

General Information
If the engine will be out of service longer than 6 months, special precautions must be taken. Follow the long term
storage procedure in the base engine troubleshooting and repair manual or service manual or contact the nearest
Cummins® Authorized Repair Location for additional information.
Engine Storage - Long Term QSX15
Page 308-2 Section ES - Engine Storage

Notes
QSX15

Section TS - Troubleshooting Symptoms Page TS-a

Section T S - Troubleshooting Symptoms
Section Contents
Page
Troubleshooting Procedures and Techniques TS-1
General Information TS-1
Troubleshooting Symptoms Charts TS-2
General Information TS-2
Air Compressor Air Pressure Rises Slowly TS-3
Air Compressor Noise is Excessive TS-4
Air Compressor Pumping Excess Lubricating Oil into the Air System TS-5
Air Compressor Will Not Maintain Adequate Air Pressure (Not Pumping Continuously) TS-6
Air Compressor Will Not Stop Pumping TS-7
Alternator Not Charging or Insufficient Charging TS-8
Coolant Loss - External TS-10
Coolant Loss - Internal TS-11
Coolant Temperature Above Normal - Gradual Overheat TS-12
Coolant Temperature Above Normal - Sudden Overheat TS-14
Coolant Temperature Below Normal . TS-16
Crankcase Gases (Blowby) Excessive TS-18
Engine Brake - Low Retarding Power or Slow to Activate TS-20
Engine Brake — One or More Cylinders Braking with Power Switch Off TS-21
Engine Brake Does Not Operate TS-19
Engine Decelerates Slowly TS-22
Engine Difficult to Start or Will Not Start (Exhaust Smoke) TS-23
Engine Difficult to Start or Will Not Start (No Exhaust Smoke) TS-25
Engine Noise Excessive TS-26
Engine Noise Excessive — Combustion Knocks TS-28
Engine Power Output Low TS-29
Engine Runs Rough at Idle TS-31 ^#|k
Engine Runs Rough or Misfires TS-32
Engine Shuts Off Unexpectedly or Dies During Deceleration ....TS-33
Engine Speed Surges at Low or High Idle TS-34
Engine Speed Surges Under Load or in Operating Range TS-35
Engine Starts But Will Not Keep Running TS-36
Engine Vibration Excessive TS-37
Engine Will Not Crank or Cranks Slowly TS-38
Engine Will Not Shut Off TS-39
Fuel Consumption Excessive .* TS-40
Fuel in Coolant TS-42
Fuel in the Lubricating Oil TS-43
Intake Manifold Air Temperature Above Specification TS-44
Lubricating Oil Consumption Excessive TS-45
Lubricating Oil Contaminated TS-47
Lubricating Oil Pressure High TS-48
Lubricating Oil Pressure Low TS-49
Lubricating Oil Sludge in the Crankcase Excessive TS-50
Lubricating Oil Temperature Above Specification TS-51
Lubricating or Transmission Oil in the Coolant TS-52
Operating Fuel Pressure is Low... ^ TS-53
Smoke, Black — Excessive TS-54
Smoke, White — Excessive TS-55
Turbocharger Boost Pressure Low TS-56
Turbocharger Leaks Engine Oil or Fuel TS-57
QSX15 Troubleshooting Procedures and Techniques
Section TS - Troubleshooting Symptoms Page TS-1

Troubleshooting Procedures and Techniques

General Information
This guide describes some typical engine operating problems, their causes, and some acceptable corrections to those
problems. Unless noted otherwise, the problems listed are those which an operator can diagnose and repair.

AWARNINGA
Performing troubleshooting procedures NOT outlined in this section can result in equipment damage or
personal injury or death. Troubleshooting must be performed by trained, experienced technicians. Consult a
Cummins Authorized Repair Location for diagnosis and repair beyond that which is outlined, and for
symptoms not listed in this section. Before beginning any troubleshooting, refer to General Safety
Instructions in Section i of this manual.
Follow the suggestions below for troubleshooting:
• Study the complaint thoroughly before acting
• Refer to the engine system diagrams
• Do the easiest and most logical things first
• Find and correct the cause of the complaint
Troubleshooting Symptoms Charts QSX15
Page TS-2 Section TS - Troubleshooting Symptoms

Troubleshooting Symptoms Charts

General Information
Use the charts on the following pages of this section to aid in diagnosing specific engine symptoms. Read each row
of blocks from top to bottom. Follow through the chart to identify the corrective action.

AWARNINGA
Troubleshooting presents the risk of equipment damage, personal injury or death. Troubleshooting must be
performed by trained, experienced technicians.
QSX15 Troubleshooting Symptoms Charts
Section TS Troubleshooting Symptoms Page TS-3

Air Compressor Air Pressure Rises Siowly

This is symptom tree t004
Cause Correction

Replace the air compressor air cleaner (if

installed). Check the air intake piping. Check
STEP 1
engine air intake restriction if the air compressor
Air intake system restriction to air compressor is inlet is plumbed to the vehicle or equipment intake
excessive system. Refer to Procedure 010-059 (Air Cleaner
Restriction) in Section 5.

OK
Go To Next Steo

Block the vehicle wheels and check the air system

STEP 2
for leaks with spring brakes applied and released.
Check for leaks from the air compressor gaskets
Air system leaks
and the air system hoses, fittings, tanks, and
valves. Refer to the OEM service manual.

OK
Go To Next Step
STEP 3 Check the air governor for correct operation. Refer
Air governor is malfunctioning or not set correctly to the OEM service manual.

OK
Go To Next Steo
v.
STEP 4
Check for carbon buildup. Replace the air
compressor discharge line and cylinder head
Carbon buildup is excessive in the air discharge
assembly if necessary. Refer to Procedure 012-015
line, downstream air valves, or cylinder head (Air Compressor Discharge Lines) in Section 7.

OK
Go To Next Steo

Check the operation of air system valves, air

STEP 5 dryers, and other OEM-installed air system
Air system component is malfunctioning components. Refer to the manufacturer's
instructions.

OK
Go To Next Step
STEP 6
Contact a Cummins® Authorized Repair Facility
Troubleshooting Symptoms Charts QSX15
Page TS-4 Section TS Troubleshooting Symptoms

Air Compressor Noise is Excessive

This is symptom tree t006
Cause Correction

STEP 1 Check for carbon buildup. Replace the air

compressor discharge line and cylinder head
Carbon buildup is excessive in the air discharge
assembly if necessary. Refer to Procedure 012-015
line, downstream air valves, or cylinder head
(Air Compressor Discharge Lines) in Section 7.

OK
Go To Next Steo

For all models, check for ice in low spots of the air
STEP 2 discharge line, dryer inlet, and elbow fittings. On
Ice buildup in the air system components * Holset® models, also check the Econ valve (if
equipped). Refer to the OEM service manual..

OK •

Go To Next Step

STEP 3 Install a ping tank between the air dryer and the
wet tank and check discharge line size for the
Air compressor is sending air pulses into the air
application. Refer to the manufacturer's
tanks
instructions.

OK
Go To Next Step
STEP 4
Contact a Cummins® Authorized Repair Facility
QSX15 Troubleshooting Symptoms Charts
Section TS - Troubleshooting Symptoms Page TS-5

Air Compressor Pumping E x c e s s Lubricating Oil into the Air System

This is symptom tree t007
Cause Correction

Verify the correct lubricating oil drain interval.

STEP 1 Refer to Procedure 018-003 (Lubricating Oil
Lubricating oil drain interval is excessive Recommendations and Specifications) in Section
V.

OK
Go To Next Steo

Replace the air compressor air cleaner (if

STEP 2
installed). Check the air intake piping. Check
engine air intake restriction if the air compressor
Air intake system restriction to air compressor is
inlet is plumbed to the vehicle or equipment intake
excessive system. Refer to Procedure 010-059 (Air Cleaner
Restriction) in Section 5.

OK
Go To Next Steo
STEP 3
Drain the reservoirs daily. Refer to Procedure
Contaminants are building up in the system
012-021 in Section 3.
reservoirs

OK
Go To Next Step

Check for carbon buildup. Replace the air

STEP 4 compressor discharge line, cylinder head, or air
compressor. Check the turbocharger for oil leaks.
Carbon buildup is excessive in the air discharge
Check the intake tube for oil. Refer to Procedure
line, air system valves, or cylinder head
012-015 (Air Compressor Discharge Lines) in
Section 7.

OK
Go To Next Steo
STEP 5
Engine angularity during operation exceeds Refer to the Engine Specification data sheet.
specification

OK
Go To Next Steo

STEP 6 If coolant temperature is above normal, refer to the

Coolant Temperature Above Normal - Gradual
Air compressor runs hot
Overheat Symptom Tree.

OK
Go To Next Step
t
STEP 7
Contact a Cummins® Authorized Repair Facility
Troubleshooting Symptoms Charts QSX15
Page TS-6 Section TS - Troubleshooting Symptoms

Air Compressor Will Not Maintain Adequate Air Pressure (Not Pumping Continuously)
This is symptom tree t008
Cause Correction

Block the vehicle wheels and check the air system

for leaks with spring brakes applied and released.
STEP 1
Check for leaks from the air compressor gaskets
Air system leaks and the air system hoses, fittings, tanks, and
valves. Refer to the OEM service manual.

OK
Go To Next Step
STEP 2
Contact a Cummins® Authorized Repair Facility
QSX15 Troubleshooting Symptoms Charts
Section TS - Troubleshooting Symptoms Page TS-7

Air Compressor Will Not Stop Pumping

This is symptom tree t010
Cause Correction
STEP 1 Check the air governor for correct operation. Refer
Air governor is malfunctioning or not set correctly to the OEM service manual.

OK
Go To Next Step
Block the vehicle wheels and check the air system
for leaks with spring brakes applied and released.
STEP 2
Check for leaks from the air compressor gaskets
Air system leaks
and the air system hoses, fittings, tanks, and
valves. Refer to the OEM service manual.

OK
Go To Next Step

Check the operation of air system valves, air

STEP 3 dryers, and other OEM-installed air system
Air system component is malfunctioning components. Refer to the manufacturer's
instructions.

OK
Go To Next Step
STEP 4
Contact a Cummins® Authorized Repair Facility
Troubleshooting Symptoms Charts QSX15
Page TS-8 Section TS - Troubleshooting Symptoms

Alternator Not Charging or Insufficient Charging

This is symptom tree t013
Cause _ _ Correction

STEP 1 Check the alternator belt tension. Adjust as

necessary. Refer to Procedure 018-005 (Drive Belt
Alternator belt is loose
Tension) in Section V.

OK
Go To Next Step
STEP 2
Make sure the drive pulley is tight on the shaft.
Alternator drive pulley is loose on the water pump
Refer to the manufacturer's specifications.
shaft

OK
Go To Next Steo
STEP 3
Battery cables or connections are loose, broken, or Check the battery cables and connections.
corroded (excessive resistance)

OK
Go To Next Step

STEP 4 Check the condition of the batteries. Replace the

batteries, if necessary. Refer to the OEM service
Batteries have malfunctioned
manual.

OK
Go To Next Step
STEP 5 Check the vehicle gauge. Refer to the OEM service
Vehicle gauge is malfunctioning manual.

OK
Go To Next Step

STEP 6 Test the alternator output. Replace the alternator

or voltage regulator if necessary. Refer to the OEM
Alternator or voltage regulator is malfunctioning
service manual.

OK
Go To Next Steo
STEP 7 Check the fuses, wires, and connections. Refer to
Electrical system is "open" (blown fuses, broken the OEM service manual and the manufacturer's
wires, or loose connections) wiring diagrams.

OK
Go To Next Step
STEP 8
Install an alternator with a higher capacity. Refer to
Alternator is overloaded or alternator capacity is
the OEM service manual.
below specification

OK
Go To Next Step
STEP 9 Position the batteries away from heat sources.
Battery temperature is above specification Refer to the OEM service manual.

OK
Go To Next Step
QSX15 Troubleshooting Symptoms Charts
Section TS - Troubleshooting Symptoms Page TS-9

Alternator Not Charging or Insufficient Charging

This is symptom tree t013
Cause - Correction

STEP 10
Contact a Cummins® Authorized Repair Facility
Troubleshooting Symptoms Charts QSX15
Page TS-10 Section TS • Troubleshooting Symptoms

Coolant L o s s - External
This is symptom tree t020
Cause Correction
STEP 1 Check the coolant level. Refer to the OEM service
Coolant level is above specification manual.

OK
Go To Next Steo

Inspect the engine for coolant leaking from hoses,

draincocks, water manifold, expansion and pipe
plugs, fittings, radiator core, exhaust heat shield,
STEP 2
heat exchanger, air compressor and cylinder head
External coolant leak gaskets, lubricating oil cooler, water pump seal,
and OEM-mounted components that have coolant
flow.

OK
Go To Next Step
STEP 3
Check the radiator pressure cap. Refer to the OEM
Radiator cap is not correct, is malfunctioning, or
service manual.
has low-pressure rating

OK
Go To Next Steo
STEP 4 Check the vent lines and the fill line for correct
Fill line or vent lines are restricted, obstructed, or routing and for restriction. Refer to the OEM
not routed correctly service manual.

OK
Go To Next Step
STEP 5
Inspect the hoses. Refer to Procedure 008-045
Cooling system hose is collapsed, restricted, or
(Radiator Hoses) in Section 6.
leaking

OK
Go To Next Step
STEP 6
Contact a Cummins® Authorized Repair Facility
QSX15 Troubleshooting Symptoms Charts
Section TS - Troubleshooting Symptoms Page TS-11

Coolant L o s s - Internal
This is symptom tree t021
Cause Correction

STEP 1 Check the fuel heater for coolant leaks. Refer to

Fuel heater is leaking coolant the manufacturer's instructions.

OK
Go To Next Step
STEP 2 Check the transmission oil cooler and torque
Transmission oil cooler or torque converter cooler converter cooler for coolant leaks. Refer to the
is leaking manufacturer's instructions.

OK
Go To Next Step
STEP 3
Contact a Cummins® Authorized Repair Facility
Troubleshooting Symptoms Charts QSX15
Page TS-12 Section TS - Troubleshooting Symptoms

Coolant Temperature Above Normal - Gradual Overheat

This is symptom tree t022
Cause Correction
STEP 1
Refer to Procedure 101-007 (Electronic Controlled
Electronic fault codes active or high counts of
Fuel System) in Section 1.
inactive fault codes

OK
Go To Next Step

Inspect the engine and cooling system for external

STEP 2 coolant leaks. Repair if necessary. Add coolant.
Coolant level is below specification Refer to Procedure 008-066 (Coolant Level) in
Section 3.

OK
Go To Next Steo
STEP 3
Inspect the charge air cooler, air conditioner
Charge air cooler fins, radiator fins, or »jr
condenser, and radiator fins. Clean, if necessary.
conditioner condenser fins are damagea or
Refer to the OEM service manual.
obstructed with debris

OK
Go To Next Steo

Open the cold weather radiator cover or the

winterfront. Maintain a minimum of 784 c m [122
2
STEP 4
in ] or approximately 28 x 28 cm [11 x 11 in] of
2
Cold weather radiator cover or winterfront is closed
opening at all times. Refer to Procedure 101-015
(Operating the Engine) in Section 1.

OK
Go To Next Steo
STEP 5
Inspect the hoses. Refer to Procedure 008-045
Cooling system hose is collapsed, restricted, or
(Radiator Hoses) in Section 6.
leaking

OK
Go To Next Step

STEP 6 Check the oil level. Add or drain oil, if necessary.

Refer to Procedure 007-043 (Lubricating Oil Level)
Lubricating oil level is above or below specification
in Section 3.

OK
Go To Next Step
STEP 7 Inspect the shroud and the recirculation baffles.
Fan shroud is damaged or missing, or the air Repair, replace, or install if necessary. Refer to the
recirculation baffles are damaged or missing OEM service manual.

OK
Go To Next Step
STEP 8
Check the radiator pressure cap. Refer to the OEM
Radiator cap is not correct, is malfunctioning, or
service manual.
has low-pressure rating

OK
Go To Next Step
QSX15 Troubleshooting Symptoms Charts
Section TS - Troubleshooting Symptoms Page TS-13

Coolant Temperature Above Normal - Gradual Overheat

This is symptom tree t022
Cause Correction
STEP 9
Refer to the Intake Manifold Air Temperature
Intake manifold air temperature is above
Above Specification symptom tree.
specification

OK
Go To Next Step

STEP 10 Test the temperature gauge. Repair or replace the

gauge if necessary. Refer to the OEM service
Coolant temperature gauge is malfunctioning
manual.

OK •
Go To Next Step

STEP 11 Check the thermostat for the correct part number

and for correct operation. Contact a Cummins
Thermostat is not correct or is malfunctioning
Authorized Repair Facility.

OK
Go To Next Step
STEP 12 Inspect the radiator shutters. Repair or replace if
Radiator shutters are not opening completely, or necessary. Check the shutterstat setting. Refer to
the shutterstat setting is wrong the manufacturer's instructions.

OK
Go To Next Step
STEP 13
Check the swing check valve for correct operation. •
Radiator swing check valve is malfunctioning (if
Refer to the OEM service manual.
equipped)

OK
Go To Next Steo

STEP 14 Verify that the engine and vehicle cooling systems

. are using the correct components. Refer to the
Vehicle cooling system is not adequate
OEM service manual.

OK
Go To Next Steo
STEP 15 Check the torque converter. Refer to the OEM
Torque converter is malfunctioning service manual.

OK
Go To Next Step
STEP 16
Contact a Cummins® Authorized Repair Facility
Troubleshooting Symptoms Charts QSX15
Page TS-14 Section TS - Troubleshooting Symptoms

Coolant Temperature Above Normal - Sudden Overheat

This is symptom tree t023
Cause Correction
STEP 1
Refer to Procedure 101-007 (Electronic Controlled
Electronic fault codes active or high counts of
Fuel System) in Section 1.
inactive fault codes

OK
Go To Next Steo

STEP 2 Check the fan drive belt. Replace the belt, if

necessary. Refer to 103-002 (Drive Belts) in
Fan drive belt is broken
Section 3.

OK
Go To Next Step

Inspect the engine and cooling system for external

STEP 3 coolant leaks. Repair if necessary. Add coolant.
Coolant level is below specification Refer to Procedure 008-066 ( Coolant Level) in
Section 3.

OK
Go To Next Step
STEP 4
Inspect the charge air cooler, air conditioner
Charge air cooler fins, radiator fins, or air
condenser, and radiator fins. Clean, if necessary.
conditioner condenser fins are damaged or
Refer to the OEM service manual.
obstructed with debris

OK
Go To Next Step
STEP 5
Inspect the hoses. Refer to Procedure 008-045
Cooling system hose is collapsed, restricted, or
(Radiator Hoses) in Section 6.
leaking

OK
Go To Next Step
STEP 6
Check the radiator pressure cap. Refer to the OEM
Radiator cap is not correct, is malfunctioning, or
service manual.
has low-pressure rating

OK
Go To Next Step
STEP 7 Inspect the radiator shutters. Repair or replace if
Radiator shutters are not opening completely, or necessary. Check the shutterstat setting. Refer to
the shutterstat setting is wrong the manufacturer's instructions.

OK
Go To Next Step

Open the cold weather radiator cover or the

STEP 8
winterfront. Maintain a minimum of 784 c m [122
2

i n ] or approximately 28 x 28 cm [11 x 11 in] of

2
Cold weather radiator cover or winterfront is closed
opening at all times. Refer to Procedure 101-015
(Operating the Engine) in Section 1.

OK
Go To Next Step
QSX15 Troubleshooting Symptoms Charts
Section TS - Troubleshooting Symptoms Page TS-15

Coolant Temperature Above Normal - Sudden Overheat

This is symptom tree t023
Cause Correction
STEP 9 Check the vent lines and the fill line for correct
Fill line or vent lines are restricted, obstructed, or routing and for restriction. Procedure 101-015
not routed correctly (Operating the Engine) in Section .1

OK
Go To Next Step
STEP 10
Check the swing check valve for correct operation.
Radiator swing check valve is malfunctioning (if
Refer to the OEM service manual.
equipped)

OK
Go To Next Step
STEP 11 Check the fan drive and controls. Refer to the OEM
Fan drive or fan controls are malfunctioning service manual.

OK
Go To Next Step
STEP 12
Contact a Cummins® Authorized Repair Facility
Troubleshooting Symptoms Charts QSX15
Page TS-16 Section TS - Troubleshooting Symptoms

Coolant Temperature Below Normal

This is symptom tree t024
Cause Correction
STEP 1
Refer to Procedure 101-007 (Electronic Controlled
Electronic fault codes active or high counts of
Fuel System) in Section 1.
inactive fault codes

OK
Go To Next Steo

Check the winterfront, shutters, and under-the-

STEP 2 hood air. Use under-the-hood intake air in cold
Engine is operating at low ambient temperature weather. Refer to Procedure 101-015 (Operating
the Engine) in Section 1.

OK
Go To Next Steo
STEP 3 Check the routing of the coolant fill line. Refer to
Coolant fill line is not routed correctly the OEM service manual.

OK
Go To Next Steo
STEP 4
Refer to the OEM service manual.
Coolant temperature gauge is malfunctioning

OK
Go To Next Steo

STEP 5 Check the shutter operation. Repair or replace the

shutters if necessary. Refer to the OEM service
Radiator shutters are stuck open or opening early
manual.

OK
Go To Next Steo
STEP 6
Check the swing check valve for correct operation.
Radiator swing check valve is malfunctioning (if
Refer to the OEM service manual.
equipped)

OK
Go To Next Steo
STEP 7 Check the fan drive and controls. Refer to the OEM
Fan drive or fan controls are malfunctioning service manual.

OK
Go To Next Step

STEP 8 Check the thermostat for the correct part number

and for correct operation. Contact a Cummins
Thermostat is not correct or is malfunctioning
Authorized Repair Facility.

OK
Go To Next Steo
STEP 9
Refer to the OEM service manual.
Coolant flow through the radiator is not correct

OK
Go To Next Step
QSX15 Troubleshooting Symptoms Charts
Section TS - Troubleshooting Symptoms Page TS-17

Coolant Temperature Below Normal

This is symptom tree t024
Cause Correction
STEP 10
Contact a Cummins® Authorized Repair Facility
Troubleshooting Symptoms Charts QSX15
Page TS-18 Section TS - Troubleshooting Symptoms

Crankcase G a s e s (Blowby) Excessive

This is symptom tree t027
Cause Correction

Check and clean the crankcase breather and vent

STEP 1
tube. Refer to Procedure 101-007 (Electronic
Crankcase ventilation system is plugged
Controlled Fuel System) in Section 1.

OK
Go To Next Steo

Check the turbocharger compressor and turbine

STEP 2
seals. Contact a Cummins Authorized Repair
Turbocharger oil seal is leaking
Facility.
QSX15 Troubleshooting Symptoms Charts
Section TS - Troubleshooting Symptoms Page TS-19

Engine Brake Does Not Operate

This is symptom tree t036
Cause Correction
STEP 1
Refer to Procedure 101-007 (Electronic Controlled
Electronic fault codes active or high counts of
Fuel System) in Section 1.
inactive fault codes

OK
Go To Next SteD

Enable the engine brake feature using an

STEP 2
electronic service tool. Refer to a Cummins
Engine brakes disabled Authorized Repair Facility.

OK
Go To Next Steo

Check the programmable parameters and the

STEP 3 selected features with an electronic service tool.
Programmable parameters or selected features Set the parameters and features again if
are not correct necessary. Refer to a Cummins Authorized Repair
Facility.

OK
Go To Next Steo
STEP 4 Check the service-brake pressure switch and
Service brake pressure switch or circuit is circuit. Refer to a Cummins Authorized Repair
malfunctioning Facility.

OK
Go To Next Step

STEP 5 Check the clutch switch adjustment, switch, and

circuit. Refer to a Cummins Authorized Repair
Clutch switch or circuit is malfunctioning
Facility.

OK
Go To Next Step
STEP 6 Check for foot pedal restriction. Check the
Accelerator pedal or lever position sensor or circuit accelerator pedal or lever position sensor and
is malfunctioning circuit. Refer to the OEM service manual.

OK
Go To Next Step

STEP 7 Check engine ground to chassis and chassis

ground to battery negative (-) post. Refer to the
Engine electrical ground is malfunctioning
OEM service manual.

OK
Go To Next Step
STEP 8 Adjust the engine brakes. Refer to a Cummins
Engine brake adjustment is not correct Authorized Repair Facility.

OK
Go To Next Step
STEP 9
Contact a Cummins® Authorized Repair Facility
Troubleshooting Symptoms Charts QSX15
Page TS-20 Section TS - Troubleshooting Symptoms

Engine Brake - Low Retarding Power or Slow to Activate

This is symptom tree t037
Cause Correction
STEP 1
Refer to Procedure 101-007 (Electronic Controlled
Electronic fault codes active or high counts of
Fuel System) in Section 1.
inactive fault codes

OK
Go To Next Steo

Allow the engine to warm to operating temperature.

STEP 2 If the engine will not reach operating temperature,
Engine is cold refer to the Coolant Temperature Below Normal
symptom tree.

OK
Go To Next Steo

Check the programmable parameters and the

STEP 3 selected features with an electronic service tool.
Programmable parameters or selected features Set the parameters and features again if
are not correct necessary. Refer to a Cummins Authorized Repair
Facility.

OK
Go To Next Steo
STEP 4 Check the oil pressure. If the pressure is low, refer
Lubricating oil pressure is below specification to the Lubricating Oil Pressure Low symptom tree.

OK
Go To Next Step
STEP 5 Check the oil level. If level is high, contact a
Air in the lubricating oil system Cummins Authorized Repair Facility.

OK
Go To Next Steo
STEP 6 Adjust the engine brakes. Refer to a Cummins
Engine brake adjustment is not correct Authorized Repair Facility.

OK
Go To Next Step
STEP 7
Contact a Cummins® Authorized Repair Facility
QSX15 Troubleshooting Symptoms Charts
Section TS - Troubleshooting Symptoms Page TS-21

Engine Brake — One or More Cylinders Braking with Power Switch Off
This is symptom tree t038
Cause Correction
STEP 1
Refer to Procedure 101-007 (Electronic Controlled
Electronic fault codes active or high counts of
Fuel System) in Section 1.
inactive fault codes

OK
Go To Next Steo
STEP 2 Adjust the engine brakes. Refer to a Cummins
Engine brake adjustment is not correct Authorized Repair Facility.

OK
Go To Next Step
STEP 3
Contact a Cummins® Authorized Repair Facility
Troubleshooting Symptoms Charts QSX15
Page TS-22 Section TS - Troubleshooting Symptoms

Engine Decelerates Slowly

This is symptom tree t041
Cause Correction
STEP 1
Refer to Procedure 101-007 (Electronic Controlled
Electronic fault codes active or high counts of
Fuel System) in Section 1.
inactive fault codes

OK
Go To Next Step
STEP 2 Check for a sticking accelerator pedal. Refer to the
Accelerator pedal or lever is sticking OEM service manual.

OK
Go To Next Step
STEP 3 Prime the fuel pump. Refer to the OEM service
Air in the fuel system manual.

OK
Go To Next Step
STEP 4
Contact a Cummins® Authorized Repair Facility
QSX15 Troubleshooting Symptoms Charts
Section TS - Troubleshooting Symptoms Page TS-23

Engine Difficult to Start or Will Not Start (Exhaust Smoke)

This is symptom tree t043
Cause Correction
STEP 1
Refer to Procedure 101-007 (Electronic Controlled
Electronic fault codes active or high counts of
Fuel System) in Section 1.
inactive fault codes

OK
Go To Next Steo
STEP 2 Fill the supply tank. Refer to the OEM service
Fuel level is low in the tank manual.

OK
Go To Next Steo

STEP 3 If the cranking speed is slower than 150 rpm, refer

to the Engine Will Not Crank or Cranks Slowly
Engine cranking speed is too slow
symptom tree.

OK
Go To Next Steo
STEP 4 Check the batteries and the unswitched battery
Battery voltage is low supply circuit. Refer to the OEM service manual.

OK
Go To Next Steo

STEP 5 Operate the engine from a tank of high-quality fuel.

Refer to Procedure 018-002 (Fuel
Fuel grade is not correct for the application or the
Recommendations and Specifications) in Section
fuel quality is poor
V.

OK
Go To Next Step

Check the winterfront, shutters, and under-the-

STEP 6 hood air. Use under-the-hood intake air in cold
Engine is operating at low ambient temperature weather. Refer to Procedure 101-015 (Operating
the Engine) in Section 1.

OK
Go To Next Step
STEP 7 Check the fuel filter. Refer to Procedure 006-015
Fuel inlet restriction (Fuel Filter) in Section 5.

OK
Go To Next Step
STEP 8 Prime the fuel pump. Refer to the OEM service
Air in the fuel system manual.

OK
Go To Next Step
STEP 9
Refer to the OEM service manual.
Vehicle parasitics are excessive

OK
Go To Next Step
Troubleshooting Symptoms Charts QSX15
Page TS-24 Section TS - Troubleshooting Symptoms

Engine Difficult to Start or Will Not Start (Exhaust Smoke)

This is symptom tree t043
Cause Correction

Check the air intake system for restriction. Clean

STEP 10 or replace the air filter and inlet piping as
Air intake system restriction is above specification necessary. Refer to Procedure 010-059 in Section
5.

OK
Go To Next Steo
STEP 11 Measure and adjust the overhead settings. Refer
Overhead adjustments are not correct to a Cummins Authorized Repair Facility.

OK
Go To Next Steo
Check the engine brake operation, adjustment,
STEP 12 and solenoid resistance. Repair or adjust as
Engine brakes are malfunctioning necessary. Refer to a Cummins Authorized Repair
Facility.

OK
Go To Next Step
STEP 13 Check the exhaust system for any restrictions.
Exhaust system restriction Refer to a Cummins Authorized Repair Facility.

OK
Go To Next Step
STEP 14
Contact a Cummins® Authorized Repair Facility

1
QSX15 Troubleshooting Symptoms Charts
Section TS - Troubleshooting Symptoms Page TS-25

Engine Difficult to Start or Will Not Start (No Exhaust Smoke)

This is symptom tree t044
Cause Correction
STEP 1
Refer to Procedure 101-007 (Electronic Controlled
Electronic fault codes active or high counts of
Fuel System) in Section 1.
inactive fault codes

OK
Go To Next Step

STEP 2 Enter the correct "PIN" or verify the antitheft

feature is disabled using electronic service tool
Vehicle antitheft feature active
Contact a Cummins Authorized Repair Facility.

OK
Go To Next Step
STEP 3 Check the vehicle keyswitch circuit. Refer to the
Keyswitch circuit is malfunctioning OEM service manual.

OK
Go To Next Step
STEP 4 Fill the supply tank. Refer to the OEM service
Fuel level is low in the tank manual.

OK
Go To Next Step
STEP 5 Prime the fuel pump. Refer to the OEM service
Air in the fuel system manual.

OK
Go To Next Step
STEP 6 Check the batteries and the unswitched battery
Battery voltage is low supply circuit. Refer to the OEM service manual.

OK
Go To Next Step
STEP 7 Check the fuel filter. Refer to Procedure 006-015
Fuel inlet restriction (Fuel Filter) in Section 5.

OK
Go To Next Step
STEP 8 Disconnect the battery cables for 30 seconds.
Electronic control module (ECM) is locked up Connect the battery cables, and start the engine.

OK
Go To Next Step
STEP 9 Dry the connectors with Cummins electronic
Moisture in the wiring harness connectors cleaner, Part Number 3824510.

OK
Go To Next Step
STEP 10
Contact a Cummins® Authorized Repair Facility
Troubleshooting Symptoms Charts QSX15
Page TS-26 Section TS - Troubleshooting Symptoms

Engine Noise Excessive

This is symptom tree tC -1
Cause Correction
STEP 1 Check the oil pressure. If the pressure is low, refer
Lubricating oil pressure is below specification to Lubricating Oil Pressure Low symptom tree.

OK
Go To Next Step
STEP 2 Check the oil level. Refer to Procedure 007-043
Lubricating oil level is below specification (Lubricating Oil Level) in Section 3.

OK
Go To Next Step

STEP 3 Refer to the Coolant Temperature is Above Normal

- Sudden Overheat or the Coolant Temperature is
Coolant temperature is above specification
Above Normal - Gradual Overheat symptom tree.

OK
Go To Next Step

STEP 4 Refer to Procedure 018-003 (Lubricating Oil

Recommendations and Specifications) in Section
Lubricating oil is thin or diluted
V.

OK
Go To Next Step
STEP 5 Check the fan drive belt. Refer to Section 3,
Fan drive belt is loose, tight, or not in alignment Procedure 103-002 (Drive Belts).

OK
Go To Next Step
STEP 6 Check the fan. Refer to Procedure 008-040 (Fan,
Fan is loose, damaged, or not balanced Cooling) in Section 3.

OK
Go To Next Steo
STEP 7 Inspect the engine mounts. Refer to the OEM
Engine mounts are worn, damaged, or not correct service manual.

OK
Go To Next Steo
STEP 8
Inspect the air piping, chassis, and cab for contact
Air intake or exhaust piping is contacting the
points. Refer to the OEM installation instructions.
chassis or cab

OK
Go To Next Steo

Check for loose or damaged piping connections

STEP 9 and missing pipe plugs. Check the turbocharger
and exhaust manifold mounting. Refer to
Air intake or exhaust leaks
Procedure 010-024 (Air Leaks, Air Intake and
Exhaust Systems) in Section 5.

OK
Go To Next Step
QSX15 Troubleshooting Symptoms Charts
Section TS - Troubleshooting Symptoms Page TS-27

Engine Noise Excessive

This is symptom tree t047
Cause Correction

STEP 10 Turbocharger fluttering noises can be heard during

deceleration or quick throttle closing. This noise is
Turbocharger noise
normal.

OK
Go To Next Steo
STEP 11 Measure and adjust the overhead settings. Refer
Overhead adjustments are not correct to a Cummins Authorized Repair Facility.

OK
Go To Next Step
STEP 12 Ins|» ^ct the vibration damper. Refer to a Cummins
Vibration damper is damaged Authorized Repair Facility.

OK
Go To Next Steo
STEP 13 Refer to the Air Compressor Noise Is Excessive -
Air compressor noise is excessive Air Compressor symptom tree.

OK
Go To Next Steo
STEP 14
Isolate each component and check for noise. Refer
Fan clutch, hydraulic pump, or refrigerant
to the OEM service manual.
compressor noise is excessive

OK
Go To Next Step
STEP 15 Disconnect the drivetrain. Check for engine noise.
Drivetrain noise is excessive Refer to the OEM service manual.

OK
Go To Next Step
STEP 16
Contact a Cummins® Authorized Repair Facility

i
Troubleshooting Symptoms Charts QSX15
Page TS-28 Section TS - Troubleshooting Symptoms

Engine Noise Excessive — Combustion Knocks

This is symptom tree t048
Cause Correction

Check the winterfront, shutters, and under-the-

STEP 1 hood air. Use under-the-hood intake air in cold
Engine is operating at low ambient temperature weather. Refer to Procedure 101-015 (Operating
the Engine) in Section 1.

OK
Go To Next Steo
STEP 2 Repair or replace the ether starting aids. Refer to
Ether starting aid is malfunctioning the manufacturer's instructions.

OK
Go To Next Step

STEP 3
Operate the engine from a tank of high-quality fuel.
Refer to Procedure 018-002 (Fuel
Fuel grade is not correct for the application or the
Recommendations and Specifications) in Section
fuel quality is poor
V.

OK
Go To Next Step
STEP 4 Prime the fuel pump. Refer to the OEM service
Air in the fuel system manual.

OK
Go To Next Step
STEP 5 Refer to the Coolant Temperature Below Normal
Coolant temperature is below specification symptom tree.

OK
Go To Next Steo
STEP 6 Measure and adjust the overhead settings. Refer
Overhead adjustments are not correct to a Cummins Authorized Repair Facility.

OK
Go To Next Step
STEP 7
Contact a Cummins® Authorized Repair Facility
QSX15 Troubleshooting Symptoms Charts
Section TS - Troubleshooting Symptoms Page TS-29

Engine Power Output Low

This is symptom tree t057
Cause Correction
STEP 1
Refer to Procedure 101-007 (Electronically
Electronic fault codes active or high counts of
Controlled Fuel System) in Section 1.
inactive fault codes

OK
Go To Next Steo
STEP 2 Check for a sticking accelerator pedal. Refer to the
Accelerator pedal or lever is sticking OEM service manual.

OK
Go To Next Step
Compare the vehicle tachometer and speedometer
STEP 3 readings with an electronic service tool reading.
Check the calibration values for the flywheel teeth,
Tachometer or speedometer is not calibrated or is
rear axle ratio, and tire revolutions. Adjust the
malfunctioning
values if necessary. Refer to the OEM service
manual.

OK
Go To Next Steo

Check the programmable parameters and the

STEP 4 selected features with an electronic service tool.
Programmable parameters or selected features Set the parameters and features again if
are not correct necessary. Refer to a Cummins Authorized Repair
Location.

OK

STEP 5 Operate the engine from a tank of high-quality fuel.

Refer to Procedure 018-002 (Fuel
Fuel grade is not correct for the application or the
Recommendations and Specifications) in Section
fuel quality is poor
V.

OK
Go To Next Steo
STEP 6 Check the fuel filter. Refer to Procedure 006-015
Fuel inlet restriction (Fuel Filter Spin-on) in Section 5.

OK
Go To Next Step
STEP 7 Prime the fuel pump. Refer to the OEM service
Air in the fuel system manual.

OK
Go To Next Steo

Check the air intake system for restriction. Clean

STEP 8 or replace the air filter and inlet piping as
Air intake system restriction is above specification necessary. Refer to Procedure 010-058 (Air Intake
Piping) in Section 3.

OK
Go To Next Step
Troubleshooting Symptoms Charts QSX15
Page TS-30 Section TS - Troubleshooting Symptoms

Engine Power Output Low

This is symptom tree t057
Cause Correction

Check for loose or damaged piping connections

STEP 9 and missing pipe plugs. Check the turbocharger
and exhaust manifold mounting. Refer to
Air intake or exhaust leaks
Procedure 010-024 (Air Leaks, Air Intake and
Exhaust System) in Section 5.

OK
Go To Next Steo

STEP 10 Inspect the charge air cooler for air restrictions or

leaks. Refer to Procedure 010-028 (Charge Air
Charge air cooler is restricted or leaking
Piping) in Section 3.

OK
Go To Next Steo

STEP 11 Check for correct gearing and drivetrain .

components. Refer to the OEM vehicle
Drivetrain is not correctly matched to the engine
specifications..

OK
Go To Next Step
STEP 12 Check the exhaust system for restrictions. Refer to
Exhaust system restriction is above specification the OEM service manual.

OK
Go To Next Steo
STEP 13
Refer to the OEM service manual.
Vehicle parasitics are excessive

OK
Go To Next Steo

Check the oil level. Verify the dipstick calibration

STEP 14 and oil pan capacity. Fill the system to the specified
Lubricating oil level is above specification level. Refer to Procedure 007-043 (Lubricating Oil
Level) in Section 3.

OK
Go To Next Step
STEP 15 Measure and adjust the overhead settings. Refer
Overhead adjustments are not correct to Procedure 003-004 (Overhead Set) in Section 6.

OK
Go To Next Steo
STEP 16 Adjust the engine brakes. Refer to a Cummins
Engine brake adjustment is not correct Authorized Repair Location.

OK
Go To Next Step
STEP 17
Contact a Cummins® Authorized Repair Facility
QSX15 Troubleshooting Symptoms Charts
Section TS - Troubleshooting Symptoms Page TS-31

Engine Runs Rough at Idle

This is symptom tree t061
Cause Correction
STEP 1
Refer to Procedure 101-007 (Electronically
Electronic fault codes active or high counts of
Controlled Fuel System) in Section 1.
inactive fault codes

OK
Go To Next Steo

Check the winterfront, shutters, and under-the-

STEP 2 hood air. Use under-the-hood intake air in cold
Engine is operating at low ambient temperature weather. Refer to Procedure 101-015 (Operating
the Engine) in Section 1.

OK
Go To Next Steo
STEP 3 Check the engine mounts. Refer to the OEM
Engine mounts are worn, damaged, or not correct service manual.

OK
Go To Next Step

STEP 4 Operate the engine from a tank of high-quality fuel.

Refer to Procedure 018-002 (Fuel
Fuel grade is not correct for the application or the
Recommendations and Specifications) in Section
fuel quality is poor
V.

OK
Go To Next Step
STEP 5 Prime the fuel pump. Refer to the OEM service
Air in the fuel system manual.

OK
•
Go To Next Step
STEP 6 Check the fuel filter. Refer to Procedure 006-015
Fuel inlet restriction (Fuel Filter Spin-on) in Section 5.

OK
Go To Next Step
STEP 7 s> Measure and adjust the overhead settings. Refer
Overhead adjustments are not correct to Procedure 003-004 (Overhead Set) in Section 6.

OK
Go To Next Steo
STEP 8 Inspect the vibration damper. Refer to Procedure
Vibration damper is damaged 001-052 (Vibration Damper, Viscous) in Section 6.

OK
Go To Next Step
STEP 9
Contact a Cummins® Authorized Repair Facility
Troubleshooting Symptoms Charts QSX15
Page TS-32 Section TS - Troubleshooting Symptoms

Engine Runs Rough or Misfires

This is symptom tree t062
Cause Correction
STEP 1
Refer to Procedure 101-007 (Electronically
Electronic fault codes active or high counts of
Controlled Fuel System) in Section 1.
inactive fault codes

OK
Go To Next Steo

Check the winterfront, shutters, and under-the-

STEP 2 hood air. Use under-the-hood intake air in cold
Engine is operating at low ambient temperature weather. Refer to Procedure 101-015 (Operating
the Engine) in Section 1.

OK
Go To Next Steo

STEP 3 Operate the engine from a tank of high-quality fuel.

Refer to Procedure 018-002 (Fuel
Fuel grade is not correct for the application or the
-""^commendations and Specifications) in Section
fuel quality is poof
V.

OK
Go To Next Step
STEP 4 Prime the fuel pump. Refer to the OEM service
Air in the fuel system manual.

OK
Go To Next Step
STEP 5 Check the fuel filter. Refer to Procedure 006-015
Fuel inlet restriction (Fuel Filter Spin-on) in Section 3.

OK

STEP 6 Adjust the engine brakes. Refer to a Cummins

Engine brake adjustment is not correct Authorized Repair Location.

OK
Go To Next Step
STEP 7 Measure and adjust the overhead settings. Refer
Overhead adjustments are not correct to Procedure 003-004 (Overhead Set) in Section 6.

OK
Go To Next Step
STEP 8 Inspect the vibration damper. Refer to Procedure
Vibration damper is damaged 001-052 (Vibration Damper, Viscous) in Section 6.

OK
Go To Next Step
STEP 9
Contact a Cummins® Authorized Repair Facility
QSX15 Troubleshooting Symptoms Charts
Section TS - Troubleshooting Symptoms Page TS-33

Engine Shuts Off Unexpectedly or Dies During Deceleration

This is symptom tree t064
Cause Correction
STEP 1
Refer to Procedure 101-007 (Electronically
Electronic fault codes active or high counts of
Controlled Fuel System) in Section 1.
inactive fault codes

OK
Go To Next Steo
STEP 2 Refer to the Engine Difficult to Start or Will Not
Engine will not restart Start symptom tree.

OK
Go To Next Steo
STEP 3 Check the vehicle keyswitch circuit. Refer to the
Keyswitch circuit is malfunctioning OEM service manual.

OK
Go To Next Step
STEP 4 Check the batteries and the unswitched battery
Battery voltage is low supply circuit. Refer to the OEM service manual.

OK
Go To Next Steo
STEP 5 Check the fuel filter. Refer to Procedure 006-015
Fuel inlet restriction (Fuel Filter Spin-on) in Section 3.

OK
Go To Next Steo
STEP 6 Prime the fuel pump. Refer to the OEM service
Air in the fuel system manual.

OK
Go To Next Step
STEP 7
Contact a Cummins® Authorized Repair Facility
Troubleshooting Symptoms Charts QSX15
Page TS-34 Section TS - Troubleshooting Symptoms

Engine Speed Surges at Low or High Idle

This is symptom tree t066
Cause Correction
STEP 1
Refer to Procedure 101-007 (Electronically
Electronic fault codes active or high counts of
Controlled Fuel System) in Section 1.
inactive fault codes

OK
Go To Next Steo
STEP 2 Fill the supply tank. Refer to the OEM service
Fuel level is low in the tank manual.

OK
Go To Next Steo
STEP 3 Check the fuel filter. Refer to Procedure 006-015
Fuel inlet restriction (Fuel Filter Spin-on) in Section 5.

OK
Go To Next Steo
STEP 4 Prime the fuel pump. Refer to the OEM service
Air in the fuel system manual.

OK
Go To Next Steo

STEP 5 Use the PTO feature for loaded conditions at low

engine speeds. Refer to a Cummins Authorized
Idling with excessive load
Repair Location.

OK
Go To Next Steo

STEP 6 Temporarily disconnect the alternator and run the

engine. Replace the alternator if necessary. Refer
Alternator is malfunctioning
to the OEM service manual.

OK
Go To Next Step
STEP 7
Contact a Cummins® Authorized Repair Facility
QSX15 Troubleshooting Symptoms Charts
Section TS - Troubleshooting Symptoms Page TS-35

Engine Speed Surges Under Load or in Operating Range

This is symptom tree t067
Cause Correction
STEP 1
Refer to Procedure 101-007 (Electronically
Electronic fault codes active or high counts of
Controlled Fuel System) in Section 1.
inactive fault codes

OK
Go To Next Steo
STEP 2 • Refer to the Engine Speed Surges at Low or High
Engine speed also surges at idle Idle symptom tree..

OK
Go To Next Steo
STEP 3 Prime the fuel pump. Refer to the OEM service
Air in the fuel system manual.

OK
Go To Next Step
STEP 4 Check the fuel drain lines for restriction. Refer to
Fuel drain line restriction the OEM service manual.

OK
Go To Next Step
STEP 5 Check the fuel filter. Refer to Procedure 006-015
Fuel inlet restriction (Fuel Filter Spin-on) in Section 5.

OK
Go To Next Step

Check the air intake system for restriction. Clean

STEP 6 or replace the air filter and inlet piping as
Air intake system restriction is above specification necessary. Refer to Procedure 010-058 (Air Intake
Piping) in Section 3.

OK
Go To Next Steo
STEP 7
Check the exhaust system for restrictions. Contact
Exhaust system restriction is not within
a Cummins Authorized Repair Facility.
specification
Troubleshooting Symptoms Charts QSX15
Page TS-36 Section TS - Troubleshooting Symptoms

Engine Starts But Will Not Keep Running

This is symptom tree t072
Cause Correction
STEP 1
Refer to Procedure 101-007 (Electronically
Electronic fault codes active or high counts of
Controlled Fuel System) in Section 1.
inactive fault codes

OK
Go To Next Step
STEP 2 Turn the keyswitch to the OFF position for 30
Idle shutdown or PTO shutdown features are seconds. Turn the keyswitch to the ON position
activated and check fault code operation.

OK
Go To Next Steo
STEP 3 Fill the supply tank. Refer to the OEM service
Fuel level is low in the tank manual.

OK
Go To Next Steo
STEP 4 Check the batteries and the unswitched battery
Battery voltage is low supply circuit. Refer to the OEM service manual.

OK
Go To Next Steo
STEP 5 Check the fuel filter. Refer to Procedure 006-015
Fuel inlet restriction (Fuel Filter Spin-on) in Section 5.

OK
Go To Next Steo
STEP 6 Check the vehicle keyswitch circuit. Refer to the
Keyswitch circuit is malfunctioning OEM service manual.

OK
Go To Next Steo

STEP 7 Check for transmission malfunctioning, cooling fan

operation cycle time, and engine-driven units.
Vehicle parasitics are excessive
Refer to the OEM service manual.

OK •

Go To Next Steo

STEP 8 Operate the engine from a tank of high-quality fuel.

Refer to Procedure 018-002 (Fuel
Fuel grade is not correct for the application or the
Recommendations and Specifications) in Section
fuel quality is poor
V.

OK
Go To Next Step
STEP 9
Contact a Cummins® Authorized Repair Facility
QSX15 Troubleshooting Symptoms Charts
Section TS - Troubleshooting Symptoms Page TS-37

Engine Vibration Excessive m

This is symptom tree t075

Cause Correction
STEP 1
Refer to Procedure 101-007 (Electronically
Electronic fault codes active or high counts of
Controlled Fuel System) in Section 1.
inactive fault codes

OK
Go To Next Step
STEP 2 Refer to the Engine Runs Rough or Misfires
Engine is misfiring symptom tree.

OK
Go To Next Step
STEP 3 Verify the correct idle speed setting. Increase the
Engine idle speed is set too low (electronically idle speed with the idle increment switch or an
controlled fuel systems) electronic service tool.

OK
Go To Next Step
STEP 4 Check the fan. Refer to Procedure 008-040 (Fan,
Fan is loose, damaged, or not balanced Cooling) in Section 3.

OK
Go To Next Step
STEP 5 Check the engine mounts. Refer to the OEM
Engine mounts are worn, damaged, or not correct service manual.

OK
Go To Next Steo
STEP 6 Inspect the vibration damper. Refer to Procedure
Vibration damper is damaged 001-052 (Vibration Damper, Viscous) in Section 6.

OK -
Go To Next Step

STEP 7 Compare the drivetrain components to the engine

and equipment specifications. Isolate the
Drivetrain components are malfunctioning or are
drivetrain components and check for vibrations.
not correct
Refer to the OEM specifications.

OK
Go To Next Step

STEP 8 Check the PTO for damage and correct

installation. Refer to the manufacturer's
Power take-off (PTO) is damaged
instructions.

OK
Go To Next Step
STEP 9
Contact a Cummins® Authorized Repair Facility
Troubleshooting Symptoms Charts QSX15
Page TS-38 Section TS - Troubleshooting Symptoms

Engine Will Not Crank or Cranks Slowly

This is symptom tree t077
Cause Correction

STEP 1 Check the starting motor operation. Compare the

starting motor with the engine and vehicle
Starting motor is malfunctioning or starting motor
specifications. Refer to a Cummins Authorized
is not correct
Repair Location.

OK
Go To Next Step
STEP 2
Remove the starting motor, and inspect the gear.
Starting motor pinion or ring gear is damaged

OK
Go To Next Step
STEP 3
Disengage engine-driven units.
Engine-driven units are engaged

OK
Go To Next Steo
STEP 4 Change the oil and filters. Refer to Procedure
Lubricating oil does not meet specifications for 007-002 (Lubricating Oil and Filters) in Section 4.
operating conditions Use the oil recommended in Section V.

OK
Go To Next Step

Check the oil level. Verify the dipstick calibration

STEP 5 and oil pan capacity. Fill the system to the specified
Lubricating oil level is above specification level. Refer to Procedure 007-043 (Lubricating Oil
Level) in Section 3.

OK
Go To Next Step
STEP 6 Check the crankshaft for ease of rotation. Refer to
Crankshaft rotation is impaired a Cummins Authorized Repair Location.

OK
Go To Next Step
STEP 7
Contact a Cummins® Authorized Repair Facility
QSX15 Troubleshooting Symptoms Charts
Section TS - Troubleshooting Symptoms Page TS-39

Engine Will Not Shut Off

This is symptom tree t081
Cause Correction
STEP 1 Check the vehicle keyswitch circuit. Refer to the
Keyswitch circuit is malfunctioning OEM service manual.

OK
Go To Next Step
STEP 2 Check the air intake ducts. Locate and isolate the
Engine is running on fumes drawn into the air source of the fumes. Repair as necessary. Refer to
intake the OEM service manual.

OK
Go To Next Step
Check the turbocharger compressor and turbine
STEP 3
seals. Contact a Cummins Authorized Repair
Turbocharger oil seal is leaking
Facility.
Troubleshooting Symptoms Charts QSX15
Page TS-40 Section TS - Troubleshooting Symptoms

Fuel Consumption Excessive

This is symptom tree t087
Cause Correction

STEP 1 Check the fuel lines, fuel connections, and fuel

filters for leaks. Check the fuel lines to the supply
Fuel leak
tanks. Refer to the OEM service manual.

OK
Go To Next Step

Check the hubometer and odometer calibrations.

STEP 2 Calibrate or replace the hubometer or odometer, if
Hubometer or odometer is miscalibrated necessary. Calculate fuel consumption with new
mileage figures.

OK
Go To Next Step
STEP 3 Refer to Procedure 101-015 (Operating the Engine)
Operator technique is not correct in Section 1.

OK
Go To Next Step
STEP 4 Consider ambient temperatures, wind, tire size,
Equipment and environmental factors are affecting axle alignment, routes, and use of aerodynamic
fuel consumption aids when evaluating fuel consumption.

OK
Go To Next Step
STEP 5 Check for correct gearing and drivetrain
Drivetrain is not correctly matched to the engine components. Refer to the OEM service manual.

OK
Go To Next Step
STEP 6
Refer to Procedure 101-007 (Electronically
Electronic fault codes active or high counts of
Controlled Fuel System) in Section 1.
inactive fault codes

OK
Go To Next Step

STEP 7 Operate the engine from a tank of high-quality fuel.

Refer to Procedure 018-002 (Fuel
Fuel grade is not correct for the application or the
Recommendations and Specifications) in Section
fuel quality is poor
V.

OK
Go To Next Step

Check the oil level. Verify the dipstick calibration

STEP 8 and oil pan capacity. Fill the system to the specified
Lubricating oil level is above specification level. Refer to Procedure 007-043 (Lubricating Oil
Level) in Section 3.

OK
Go To Next Step
QSX15 Troubleshooting Symptoms Charts
Section TS - Troubleshooting Symptoms Page TS-41

Fuel Consumption Excessive

This is symptom tree t087
Cause Correction

Check the air intake system for restriction. Clean

STEP 9 or replace the air filter and inlet piping as
Air intake system restriction is above specification necessary. Refer to Procedure 010-058 (Air Intake
Piping) in Section 3.

OK
Go To Next Step
STEP 10 Check the exhaust system for restrictions. Refer to
Exhaust system restriction is above specification the OEM service manual.

OK
Go To Next Step
STEP 11 Measure and adjust the overhead settings. Refer
Overhead adjustments are not correct to Procedure 003-004 (Overhead Set) in Section 6.

OK
Go To Next Step
STEP 12
Contact a Cummins® Authorized Repair Facility
Troubleshooting Symptoms Charts QSX15
Page TS-42 Section TS - Troubleshooting Symptoms

Fuel in Coolant
This is symptom tree t091
Cause Correction

Check the bulk coolant supply. Drain the coolant

STEP 1 and replace with noncontaminated coolant.
Bulk coolant supply is contaminated Replace the coolant filters. Refer to Procedure
008-006 (Coolant Filter) in Section 5

OK
Go To Next Step
STEP 2 Check the fuel heater and replace, if necessary.
Fuel heater is malfunctioning (if equipped) Refer to the manufacturer's instructions.

OK
Go To Next Step
STEP 3
Contact a Cummins® Authorized Repair Facility
QSX15 Troubleshooting Symptoms Charts
Section TS - Troubleshooting Symptoms Page TS-43

Fuel in the Lubricating Oil

This is symptom tree t092
Cause Correction

STEP 1 Check the bulk oil supply. Drain the oil and replace
Bulk oil supply is contaminated with noncontaminated oil. Replace the oil filters.

OK
Go To Next Step
Low oil and coolant temperatures can be caused
STEP 2 by long idle time (greater than 10 minutes). Shut
Engine idle time is excessive off the engine rather than idle for long periods. If
idle time is necessary, raise the idle speed.

OK
Go To Next Step
Inspect the fuel drain lines for restrictions. Remove
STEP 3
any restrictions found. Refer to the OEM service
Fuel drain line is restricted
manual.

OK
Go To Next Step
STEP 4
Contact a Cummins® Authorized Repair Facility
Troubleshooting Symptoms Charts QSX15
Page TS-44 Section TS - Troubleshooting Symptoms

Intake Manifold Air Temperature Above Specification

This is symptom tree t096
Cause Correction
STEP 1
Refer to Procedure 101-007 (Electronically
Electronic fault codes active or high counts of
Controlled Fuel System) in Section 1.
inactive fault codes

OK
Go To Next Step
STEP 2
Test the temperature gauge. Refer to the OEM
Intake manifold temperature gauge is
service manual.
malfunctioning, if equipped
*
OK
Go To Next Step
STEP 3 Inspect the radiator shutters. Repair or replace if
Radiator shutters are not opening completely, or necessary. Check the shutterstat setting. Refer to
the shutterstat setting is wrong the manufacturer's instructions.

OK
Go To Next Step

Open the cold weather radiator cover or the

winterfront. Maintain a minimum of 784 c m [122
2
STEP 4
in ] or approximately 28 x 28 cm [11 x 11 in] of
2
Cold weather radiator cover or winterfront is closed
opening at all times. Refer to Procedure 101-015
(Operating the Engine) in Section 1.

OK
Go To Next Step
•
STEP 5
Inspect the charge air cooler, air conditioner
Charge air cooler fins, radiator fins, or air condenser, and radiator fins. Clean, if necessary.
conditioner condenser fins are damaged or Refer to Procedure 010-028 (Charge Air Piping) in
obstructed with debris Section 3.
OK
Go To Next Step
STEP 6 Inspect the shroud and the recirculation baffles.
Fan shroud is damaged or missing, or the air Repair, replace, or install if necessary. Refer to the
recirculation baffles are damaged or missing OEM service manual.

OK
Go To Next Step
STEP 7 Check the fan drive and controls. Refer to the OEM
Fan drive or fan controls are malfunctioning service manual.

OK
Go To Next Step
STEP 8 Verify that the fan is the correct size. Refer to the-
Fan is not an adequate size for the application OEM specifications and Engine Data Sheet.

OK
Go To Next Step
STEP 9
Contact a Cummins® Authorized Repair Facility
QSX15 Troubleshooting Symptoms Charts
Section TS - Troubleshooting Symptoms Page TS-45

Lubricating Oil Consumption Excessive

This is symptom tree t102
Cause Correction
STEP 1
Check the amount of oil added versus the mileage.
Verify the oil consumption rate

OK

Inspect the engine for external oil leaks. Tighten

STEP 2 the capscrews, pipe plugs, and fittings. Replace
Lubricating oil leak (external) gaskets, if necessary. Refer to Procedure 018-006
(Engine Component Torque Values) in Section V.

OK
Go To Next Step

STEP 3 Check and clean the crankcase breather and vent

tube. Refer to Procedure 003-018 (Crankcase
Crankcase ventilation system is plugged
Breather Tube) in Section 3.

OK
Go To Next Step
STEP 4 Check the air lines for carbon buildup and
Air compressor is pumping lubricating oil into the lubricating oil. Refer to Procedure 012-015 (Air
air system Compressor Discharge Lines) in Section 7.

OK
Go To Next Step

STEP 5 Check the turbocharger compressor and turbine

seals. Contact a Cummins Authorized Repair
Turbocharger oil seal is leaking
Facility.

OK
Go To Next Step
STEP 6
Contact a Cummins Authorized Repair Facility.
Lubricating oil temperature is above specification

OK
Go To Next Step
STEP 7
Contact a Cummins Authorized Repair Facility.
Lubricating oil is contaminated with coolant or fuel

OK
Go To Next Step
STEP 8 Check the dipstick calibration. Refer to a Cummins
Lubricating oil dipstick calibration is not correct Authorized Repair Location.

OK
Go To Next Step

STEP 9 Change the oil and filters. Refer to Procedure

018-003 (Lubricating Oil Recommendations and
Lubricating oil does not meet specifications for
Specifications) in Section V. Use the oil type
operating conditions
recommended in Section V.

OK
Go To Next Step
Troubleshooting Symptoms Charts QSX15
Page TS-46 Section TS - Troubleshooting Symptoms

Lubricating Oil Consumption Excessive

This is symptom tree t102
Cause Correction

Verify the correct lubricating oil drain interval.

STEP 10
Refer to Procedure 102-002 (Maintenance
Lubricating oil drain interval is excessive Schedule) in Section 2.

OK
Go To Next Step
STEP 11
Contact a Cummins® Authorized Repair Facility
QSX15 Troubleshooting Symptoms Charts
Section TS - Troubleshooting Symptoms Page TS-47

Lubricating Oil Contaminated

This is symptom tree t103
Cause Correction
STEP 1 Check the bulk oil supply. Drain the oil and replace
Bulk oil supply is contaminated with noncontaminated oil. Replace the oil filters.

OK
Go To Next Step
STEP 2
Refer to the Coolant Loss - Internal symptom tree.
Internal coolant leaks

OK
Go To Next Step
STEP 3 Refer to the Lubricating Oil Sludge in the
Lubricating oil sludge is excessive Crankcase Is Excessive symptom tree.

OK
Go To Next Step
STEP 4 Refer to the Fuel in the Lubricating oil symptom
Fuel in the lubricating oil tree.

OK
Go To Next Step
STEP 5
Contact a Cummins® Authorized Repair Facility
Troubleshooting Symptoms Charts QSX15
Page TS-48 Section TS - Troubleshooting Symptoms

Lubricating Oil Pressure High

This is symptom tree t104
Cause Correction
STEP 1
Refer to Procedure 101-007 (Electronically
Electronic fault codes active or high counts of
Controlled Fuel System) in Section 1.
inactive fault codes

OK
Go To Next Steo
STEP 2 Check the oil pressure switch, gauge, or sensor for
Lubricating oil pressure switch, gauge, or sensor is correct operation and location. Refer to the OEM
malfunctioning or is not in the correct location service manual.

OK
Go To Next Steo
STEP 3 Refer to the Coolant Temperature Below Normal
Coolant temperature is below specification symptom tree.

OK
Go To Next Step
STEP 4 . Change the oil and filters. Refer to Procedure
Lubricating oil does not meet specifications for 007-002 (Lubricating Oil and Filters) in Section 4.
operating conditions Use the oil type recommended in Section V.

OK
Go To Next Step
STEP 5
Contact a Cummins® Authorized Repair Facility
QSX15 Troubleshooting Symptoms Charts
Section TS - Troubleshooting Symptoms Page TS-49

Lubricating Oil Pressure Low

This is symptom tree t105
Cause Correction

STEP 1 Check the oil level. Add or drain oil, if necessary.

Refer to Procedure 007-043 (Lubricating Oil Level)
Lubricating oil level is above or below specification
in Section 3.

OK
Go To Next Steo

Inspect the engine for external oil leaks. Tighten

STEP 2
the capscrews, pipe plugs, and fittings. Replace
gaskets if necessary. Refer to Procedure 018-006
Lubricating oil leak (external)
(Engine Component Torque Values) in Section V
for specifications.

OK
Go To Next Step
STEP 3
Refer to Procedure 018-015 (General Engine) in
Engine angularity during operation exceeds
Section V or the Engine Specification data sheet.
specification

OK
Go To Next Step
STEP 4 Check the oil pressure switch, gauge, or sensor for
Lubricating oil pressure switch, gauge, or sensor is correct operation and location. Refer to the OEM
malfunctioning or is not in the correct location service manual.

OK
Go To Next Step
STEP 5 Change the oil and filters. Refer to Procedure
Lubricating oil does not meet specifications for 007-002 (Lubricating Oil and Filters) in Section 4.
operating conditions Use the oil type recommended in Section V.

OK
Go To Next Step
STEP 6
Contact a Cummins® Authorized Repair Location.
Lubricating oil is contaminated with coolant or fuel

OK
Go To Next Steo

Change the oil and filter. Refer to Procedure

007-002 (Lubricating Oil and Filters) in Section 4.
STEP 7 Review the Cummins® Maintenance Schedule in
Section 2. If lubricating oil filter plugging occurs
Lubricating oil filter is plugged
prior to the recommended lubricating oil filter
change interval, contact a Cummins® Authorized
Repair Location.

OK
Go To Next Steo
STEP 8
Contact a Cummins® Authorized Repair Location.
Lubricating oil temperature is above specification
Troubleshooting Symptoms Charts QSX15
Page TS-50 Section TS - Troubleshooting Symptoms

Lubricating Oil Sludge in the Crankcase Excessive

This is symptom tree t106
Cause Correction
STEP 1 Check the bulk oil supply. Drain the oil and replace
Bulk oil supply is contaminated with noncontaminated oil. Replace the oil filters.

OK
Go To Next Steo
STEP 2 Change the oH and filters. Refer to Procedure
Lubricating oil does not meet specifications for 007-002 (Lubricating Oil and Filters) in Section 4.
operating conditions Use the oil recommended in Section V.

OK
Go To Next Steo

STEP 3 Verify the correct lubricating oil drain interval.

Refer to Procedure 102-002 (Maintenance
Lubricating oil drain interval is excessive
Schedule) in Section 2.

OK
Go To Next Step

STEP 4 Operate the engine from a tank of high-quality fuel.

Refer to Procedure 018-002 (Fuel
Fuel grade is not correct for the application or the
Recommendations and Specifications) in Section
fuel quality is poor
V.

OK
Go To Next Steo
STEP 5 Refer to the Coolant Temperature Below Normal
Coolant temperature is below specification symptom tree.

OK
Go To Next Steo
STEP 6
Contact a Cummins Authorized Repair Facility.
Lubricating oil is contaminated with coolant or fuel

OK
Go To Next Steo

STEP 7 Check and clean the crankcase breather and vent

tube. Refer to Procedure 003-018 (Crankcase
Crankcase ventilation system is plugged
Breather Tube) in Section 3.

OK
Go To Next Step
STEP 8
Contact a Cummins® Authorized Repair Facility
QSX15 Troubleshooting Symptoms Charts
Section TS - Troubleshooting Symptoms Page TS-51

Lubricating Oil Temperature Above Specification

This is symptom tree t107
Cause Correction

STEP 1
Refer to Procedure 101-007 (Electronically
Electronic fault codes active or high counts of Controlled Fuel System) in Section 1.
inactive fault codes

OK
Go To Next Step
Check the oil level. Add or drain oil, if necessary.
STEP 2
Refer to Procedure 007-043 (Lubricating Oil Level)
Lubricating oil level is above or below specification in Section 3.

OK
Go To Next Step
Refer to the Coolant Temperature is Above Normal
STEP 3
- Sudden Overheat or the Coolant Temperature is
Coolant temperature is above specification Above Normal - Gradual Overheat symptom tree.

OK
Go To Next Step
STEP 4
Contact a Cummins® Authorized Repair Facility
Troubleshooting Symptoms Charts „ QSX15
Page TS-52 Section TS - Troubleshooting Symptoms

Lubricating or Transmission Oil in the Coolant

This is symptom tree t108
Cause Correction

Check the bulk coolant supply. Drain the coolant

STEP 1 and replace with noncontaminated coolant.
Bulk coolant supply is contaminated Replace the coolant filters. Refer to Procedure
008-006 (Coolant Filter) in Section 5

OK
Go To Next Step
STEP 2
Remove and inspect the cooler cores and o-rings.
Torque converter cooler or hydraulic oil cooler is
Refer to the OEM service manual.
malfunctioning

OK
Go To Next Step
STEP 3
Contact a Cummins® Authorized Repair Facility
QSX15 Troubleshooting Symptoms Charts
Section TS - Troubleshooting Symptoms Page TS-53

Operating Fuel Pressure is Low

This is symptom tree t109
Cause Correction

STEP 1 Prime the fuel pump. Refer to a Cummins

Air in the fuel system Authorized Repair Location.

OK
Go To Next Step
STEP 2 Check the fuel filter. Refer to Procedure 006-015
Fuel inlet restriction (Fuel Filter Spin-on) in Section 5.
Troubleshooting Symptoms Charts QSX15
Page TS-54 Section TS - Troubleshooting Symptoms

Smoke, Black — Excessive

This is symptom tree t116
Cause Correction
STEP 1
Refer to Procedure 101-007 (Electronically
Electronic fault codes active or high counts of
Controlled Fuel System) in Section 1.
inactive fault codes

OK
Go To Next Steo

STEP 2 Operate the engine from a tank of high-quality fuel.

Refer to Procedure 018-002 (Fuel
Fuel grade is not correct for the application or the
Recommendations and Specifications) in Section
fuel quality is poor
V.

OK
Go To Next Steo

Check for loose or damaged piping connections

STEP 3 and missing pipe plugs. Check the turbocharger
and exhaust manifold mounting. Refer to
Air intake or exhaust leaks
Procedure 010-024 (Air Leaks, Air Intake and
Exhaust Systems) in Section 5.

OK
Go To Next Steo

Check the air intake system for restriction. Clean

STEP 4 or replace the air filter and inlet piping as
Air intake system restriction is above specification necessary. Refer to Procedure 010-058 (Air Intake
Piping) in Section 3.

OK
Go To Next Step
STEP 5 Check the exhaust system for restrictions. Refer to
Exhaust system restriction is above specification the OEM service manual.

OK

STEP 6 Inspect the charge air cooler for air restrictions or

leaks. Refer to Procedure 010-028 (Charge Air
Charge air cooler is restricted or leaking
Cooler) in Section 3.

OK
Go To Next Steo
STEP 7 Measure and adjust the overhead settings. Refer
Overhead adjustments are not correct to Procedure 003-004 (Overhead Set) in Section 6.

OK
Go To Next Step

STEP 8 Check the turbocharger compressor and turbine

seals. Contact a Cummins Authorized Repair
Turbocharger oil seal is leaking
Facility.

OK
Go To Next Step
STEP 9
:ontact a Cummins® Authorized Repair Facility
QSX15 Troubleshooting Symptoms Charts
Section TS - Troubleshooting Symptoms Page TS-55

Smoke, White — Excessive

This is symptom tree t118
Cause Correction
STEP 1
Refer to Procedure 101-007 (Electronically
Electronic fault codes active or high counts of
Controlled Fuel System) in Section 1.
inactive fault codes

OK
Go To Next Steo

Allow the engine to warm to operating temperature.

STEP 2 If the engine will not reach operating temperature,
Engine is cold refer to the Coolant Temperature Below Normal
symptom tree.

OK
Go To Next Steo

Check the winterfront, shutters, and under-the-

STEP 3 hood air. Use under-the-hood intake air in cold
Engine is operating at low ambient temperature weather. Refer to Procedure 101-015 (Operating
the Engine) in Section 1.

OK
Go To Next Steo
STEP 4 Check for fuel inlet restriction. Contact a Cummins
Fuel inlet restriction Authorized Repair Facility.

OK
Go To Next Step

STEP 5
Operate the engine from a tank of high-quality fuel.
Refer to Procedure 018-002 (Fuel
Fuel grade is not correct for the application or the
Recommendations and Specifications) in Section
fuel quality is poor
V.

OK
Go To Next Steo
STEP 6 Measure and adjust the overhead settings. Refer
Overhead adjustments are not correct to Procedure 003-004 (Overhead Set) in Section 6.

OK
Go To Next Step
STEP 7
Contact a Cummins® Authorized Repair Facility
Troubleshooting Symptoms Charts QSX15
Page TS-56 Section TS - Troubleshooting Symptoms

Turbocharger Boost Pressure Low

This is symptom tree t121
Cause Correction

Check the intake and exhaust systems for

STEP 1
restrictions. Inspect the intake air filter and replace
Intake and exhaust system restricted as necessary.

OK
Go To Next Step

Check for loose or damaged piping connections

and missing pipe plugs. Check the turbocharger
STEP 2
and exhaust manifold mounting. Refer to
Air intake or exhaust leaks Procedure 010-024 (Air Leaks, Air Intake and
Exhaust Systems) in Section 5.

OK
Go To Next Step
STEP 3
Contact a Cummins® Authorized Repair Facility
QSX15 Troubleshooting Symptoms Charts
Section TS - Troubleshooting Symptoms Page TS-57

Turbocharger Leaks Engine Oil or Fuel

This is symptom tree t122
Cause Correction
STEP 1 Review the engine operating instructions. Refer to
Engine is operating for extended periods under Procedure 101-015 (Operating the Engine) in
light or no-load conditions (slobbering) Section 1.

OK
Go To Next Steo

STEP 2 Check the turbocharger compressor and turbine

seals. Contact a Cummins Authorized Repair
Turbocharger oil seal is leaking
Facility.
Troubleshooting Symptoms Charts QSX15
Page TS-58 Section TS - Troubleshooting Symptoms

Notes
QSX15
Section V - Maintenance Specifications Page V-a

Section V - Maintenance Specifications

Section Contents
Page
Air Intake System V-6
Specifications V-6
Capscrew Markings and Torque Values V-20
Capscrew Markings and Torque Values - Metric , V-20
Capscrew Markings and Torque Values - U.S. Customary. V-21
General Information V-20
Coolant Recommendations and Specifications V-13
Coolant Replacement Requirements V-17
Cooling System Sealing Additives V-14
Cooling System Soluble Oils ....V-14
Fleetguard® DCA4 Service Filters and Liquid Precharge • V-15
Fully Formulated Coolant/Antifreeze • ..V-13
Supplemental Coolant Additive (SCA) V-15
Test Intervals V-16
Testing SCA Concentration Level CC-2602 Test Kit V-15
Cooling System V-4
General Information V-4
Specifications • V-4
Cummins®/Fleetguard® Filter Specifications V-9
Specifications. • V-9
Drive Belt Tension V-18
Tension Chart V-18
Electrical System V-8
Specifications V-8
Engine Component Torque Values V-19
General Information V-19
Exhaust System V-7
Specifications V-7
Industrial and Generator Drive V-7
Fuel Recommendations and Specifications V-10
Fuel Recommendations • V-10
Fuel System V-2
Specifications • V-2
General Engine V-1
Specifications • • V-1
Lubricating Oil Recommendations and Specifications V-12
AfterMarket Oil Additive Usage V-12
New Engine Break-in Oils V-12
Lubricating Oil System . V-3
Specifications V-3
Paae V-b QSX15
Section V - Maintenance Specifications
QSX15 General Engine
Section V - Maintenance Specifications Page V-1
*
General Engine
Specifications
Listed below are general specifications for this engine.
Horsepower Refer to the engine dataplate.
Engine Speed Refer to the engine dataplate.
Engine S p e e d
400 to 450 hp 1800 rpm
500 to 600 hp 2000 rpm
Displacement 15 liters [912 C.I.D.]
Bore and Stroke 137 mm [5.40 in] x 169 mm [6.65 in]
Dry Engine Weight:
Power Generation 1370 kg [3020 lb]
Industrial 1524 kg [3360 lb]
Wet Engine Weight:
Power Generation 1475 kg [3250 lb]
Industrial 1628 kg [3590 lb]
Fuel System QSX15
Page V-2 Section V - Maintenance Specifications
v
Fuel System
Specifications
Automotive with CM870
Maximum Allowable Restriction to Pump With or Without Fuel Cooler:
With Clean Filter 203 mm Hg [8 in Hg]
With Dirty Filter 305 mm Hg [12 in Hg]
Maximum Allowable Fuel Return Line Restriction 229 mm Hg [9 in Hg]
Minimum Allowable Fuel Tank Vent Capability 2.0 m / h r [70 ft /hr]
3 3

Maximum Allowable Fuel Inlet Temperature 71 °C [160°F]

Fuel Shutoff Solenoid Resistance 6 to 10 ohms
Maximum Allowable Pressure Drop Across Pressure Fuel Filter 517 kPa [75 psi]
Automotive, Industrial with CM570 and Power Generation without CM570
Maximum Allowable Fuel Return Line Restriction
With Check Valve 165 mm Hg [6.5 in Hg]
Without Check Valve 229 mm Hg [9 in Hg]
Minimum Allowable Fuel Tank Vent Capability 2.0 m / h r [70 ft /hr]
3 3

Maximum Allowable Fuel Inlet Temperature 71 °C [160°F]

Fuel Shutoff Solenoid Resistance 6 to 10 ohms
Maximum Allowable Inlet Restriction at the IFSM - high idle, no load:
Upper Location ....355 mm Hg [14 in Hg]
Lower Location 305 mm Hg [12 in Hg]
Maximum Allowable Inlet Restriction at OEM Fuel Inlet:
Without Remote Mount Filter 76 mm Hg [3 in Hg]
With Remote Mount Filter 254 mm Hg [10 in Hg]
QSX15 Lubricating Oil System
Section V - Maintenance Specifications Page V-3

Lubricating Oil System

Specifications
Oil Pressure at Idle (minimum allowable at 9 3 ° C [200°F] oil temperature) 103 kPa [15 psi]
Oil Pressure at No-Load Governed Speed (automotive and industrial only) 241 to 276 kPa [35 to 40 psi]
Pressure Drop Across Oil Filter (maximum allowable with 15W40 oil at operating temperature) 172 kPa [25 psi]
Oil Capacity of Standard Engine:
Combination Full-Flow/Bypass Filter Capacity ; 3.78 liters [1 gal]
Oil Capacity of Standard Engine:
Oil Pan Capacity: Automotive and Industrial
High 41.6 liters [11 gal]
Low 34.1 liters [9 gal]
Oil Capacity of Standard Engine:
Oil Pan Capacity: Power Generation (for oil pan option OP1493)
High : 83.3 liters [22 gal]
Low 72.0 liters [19 gal]
Oil Capacity of Standard Engine:
Oil Change Capacity (oil pan and filter filled to capacity):
Automotive and Industrial 41.6 liters [11 gal]
Power Generation (for oil pan option OP1493) 87.0 liters [23 gal]
Total Lubricating Oil System Capacity Including Filter:
Automotive and Industrial 45.4 liters [12 gal]
Power Generation (for oil pan option OP1493) 90.8 liters [24 gal]
Oil Pressure Range:
Cold Engine Up to 1034 kPa [150 psi]
Warm Engine 241 to 276 kPa [35 to 40 psi]
Cooling System QSX15
Page V-4 Section V - Maintenance Specifications

Cooling System
General Information
Cummins Inc. recommends the use of fully-formulated antifreeze or coolant containing a precharge of supplemental
coolant additive (SCA). The antifreeze or coolant must meet the specifications outlined in the Technology and
Maintenance Council (TMC) Recommended Practice (RP) 329 (ethylene glycol) or Recommended Practice (RP) 330
(propylene glycol). The use of fully-formulated antifreeze or coolant significantly simplifies cooling system
maintenance.
Copies of Technology and Maintenance Council (TMC) specifications can be obtained through Cummins Inc., or by
contacting:
Technology and Maintenance Council
American Trucking Association
2200 Mill Road
Alexandria, VA 33314-5388
Phone: (703) 838-1763
Fax (703) 836-6070
Fully-formulated antifreeze contains balanced amounts of antifreeze, SCA, and buffering compounds, but does not
contain 50 percent water. Fully-formulated coolant contains balanced amounts of antifreeze, SCA, and buffering
compounds already premixed 50/50 with deionized water.
The following pages explain water, antifreeze, and SCA's and how to test antifreeze and SCA levels.
This section also contains information on cooling system maintenance and a coolant treatment chart that is used to
determine the correct SCA service filter.
Alternative maintenance practices for cooling systems can be found in Cummins® Coolant Requirements and
Maintenance, Bulletin 3666132.

Specifications
Industrial Applications
Coolant Capacity
Engine only 24 liters [25 qt]
Standard Modulating Thermostat
Temperature Range 82 to 93°C [180 to 200°F]
Maximum Coolant Pressure (exclusive of pressure cap - closed thermostat at the maximum no-load governed
speed)
All ratings 227 kPa [33 psi]
Coolant Alarm Activation Temperature
Ratings Below 565 Horsepower 107°C [225°F]
Ratings of 565/600 Horsepower 110°C [230°F]
Maximum Allowable Top Tank Temperature
Ratings Below 565 Horsepower 107°C [225°F]
Ratings of 565/600 Horsepower 110°C [230°F]
Power Generation, Standby 110°C [230°F]
Power Generation, Prime .104°C [220°F]
Minimum Recommended Top Tank Temperature
Minimum Temperature 70°C [160°F]
Minimum Allowable Draw Down
Minimum Allowable Draw Down 2.4 liters [2.5 qt] or 10 Percent of System Capacity (whichever is greater)
Minimum Recommended Pressure Cap
Industrial 103 kPa [15 psi]
Power Generation 69 kPa [10 psi]
Minimum Fill Rate
Without Low-Level Alarm 19 liters/min [5 gpm]
Maximum Deaeration Time
Time 25 minutes
Fan-on Coolant Temperature
Temperature 9 5 ° C [203°F]
Fan-on Intake Air Temperature
Temperature 8 8 ° C [190°F]
QSX15 Cooling System
Section V - Maintenance Specifications Page V-5
Air Intake System QSX15
Page V-6 Section V - Maintenance Specifications

Air Intake System

Specifications

ACAUTIONA
Engine intake air must be filtered to prevent dirt and debris from entering the engine. If air intake piping is
damaged or loose, unfiltered air will enter the engine and cause premature wear.
Industrial and Generator Drive
Maximum Temperature Rise between Ambient Air and Engine Air Inlet (ambient above 0 ° C [32°F])
Industrial 17°C [30°F]
Maximum Inlet Restriction (clean filter) Normal-Duty Element:
Industrial s 250 mm H 0 [10 in H 0 ]
2 2

Power Generation 381 mm H 0 [15 in H 0 ]

2 2

Maximum Inlet Restriction (dirty filter) 635 mm H 0 [25 in H 0 ]

2 2

Maximum Allowable Pressure Drop across Charge Air Cooler:

Industrial
psi 14 kPa [2 psi]
Hg (mercury) 102 mm Hg [4 in Hg]
Maximum Allowable Pressure Drop from Turbocharger Outlet to Intake Manifold:
Power Generation:
psi 14 kPa [2 psi]
Hg (mercury) 102 mm Hg [4 in Hg]
Four-Step Wastegate Controller Solenoid Resistance 7 to 8 ohms
QSX15 Exhaust System
Section V - Maintenance Specifications Page V-7

Exhaust System
Specifications
Industrial and Generator Drive
Maximum Allowable Exhaust Back Pressure Created by Piping and Silencer:
Industrial:
Hg (mercury) 76 mm Hg [3 in Hg]
H 0 (water)
2 1016 mm H 0 [40 in H 0 ]
2 2

Maximum Allowable Exhaust Back Pressure Created by Piping and Silencer:

Power Generation:
Hg (mercury) '. 51 mm Hg [2 in Hg]
H 0 (water)
2 682 mm H 0 [27 in H 0 ]
2 2

Exhaust Pipe Size (normally acceptable inside diameter):

Industrial 127 mm [5 in]
Power Generation 152 mm [6 in]
Electrical System QSX15
Page V-8 Section V - Maintenance Specifications

Electrical System
Specifications
Minimum Recommended Battery Capacity:

System Ambient Temperatures

Voltage
-18°C [0°F]
Cold Reserve
Cranking Capacity*
Amperes Amperes
12 VDC
Automotive and Power Generation 1800 540
Industrial 2700 360
24 V D C * *
Automotive and Power Generation 900 270
Industrial 1350 360

* The number of plates within a given battery size determines reserve capacity. Reserve capacity determines the
length of time that sustained cranking can occur.
* * C C A ratings are based on two 12-VDC batteries in series.
A minimum of 6 VDC at the OEM connector is required to power up the ECM.

Minimum Battery Capacity:

12-VDC Starter 400 ampere-hours to 1800 cold cranking amps @ -18°C [0°F]
24-VDC Starter 200 ampere-hours to 900 cold cranking amps @ -18°C [0°F]
Maximum Starting Circuit Resistance:
12-VDC Starter 0.00075 ohm
24-VDC Starter 0.00200 ohm
Battery Cable Sizes - American Wire Gauge (maximum length in cranking motor circuit):
12-VDC:
No. 00 3.7 m [12 ft]
No. 000 4.9 m [16 ft]
No. 0000 or Two No. 0* 6.1 m [20 ft]
Two No. 00 7.6 m [25 ft]
Battery Cable Sizes - American Wire Gauge (maximum length in cranking motor circuit):
12-VDC High Output:
No. 00 2.1 m [7 ft]
No. 000 2.7 m [9 ft]
No. 0000 or Two No. 0* 3.7 m [12 ft]
Two No. 00 4.3 m [14 ft]
Battery Cable Sizes - American Wire Gauge (maximum length in cranking motor circuit):
24 to 32 V D C :
No. 00 6.1 m [20 ft]
No. 000 8.2 m [27 ft]
No. 0000 or Two No. 0* 10.7 m [35 ft]
Two No. 00 13.7 m [45 ft]
Minimum Ambient Air Temperature without Starting Aid -1 °C [30°F]
Minimum Cranking Speed without Starting Aid 130 rpm
* Two strands of No. 0 cable can be used in place of one No. 0000 cable, provided that connections are carefully
made to make sure equal current flow exists in each parallel cable.
'SX15QSX15 Cummins®/Fleetguard® Filter Specifications
itions Section V - Maintenance Specifications Page V-9

Cummins®/Fleetguard® Filter Specifications

Specifications
Fleetguard® filters are manufactured by Cummins Filtration Inc., which is a subsidiary of Cummins Inc. Fleetguard®
filters are developed through joint testing at Cummins Inc. and at Cummins Filtration Inc. Fleetguard® filters are
standard on new Cummins® engines. Cummins Inc. recommends their use.
Fleetguard® products meet all Cummins Inc. Source Approval Test standards to provide the quality filtration necessary
to achieve the engine's design life. If other brands are substituted, the purchaser must insist on products that the
supplier has tested to meet Cummins Inc. high quality standards.
Cummins Inc. can not be responsible for problems caused by nongenuine filters that do not meet Cummins Inc.
performance or durability requirements.
Cummins Inc. requires a lubricating oil filter be used that meets Cummins Inc. Source Approval Method 10,765.
Filter Type
Lubricating Oil Filter
Cummins® Part Number 3406810 and 3406809
Fleetguard® Part Number LF9000 and LF9001
Fuel-Water Separator
Cummins® Part Number 4010650 and 4010651
Fleetguard® Part Number FS1007 and FS1040
Coolant Filter
Fleetguard® Part Number WF2125 1

WF2126 2

WF2127 3

1 This filter is designed for use with Fleetguard® extended service cooling system, which extends cooling system
service to 1 year, 241,402 km [150,000 mi], or 4000 hours, whichever comes first. This filter is used for cooling
systems up to 76 liters [20 gal]. Refer to Cummins® Coolant Requirements and Maintenance, Bulletin 3666132.
Fleetguard® ES coolant must be used for all fill and top-off, which is critical for extended cooling system
maintenance intervals.
2 This filter is designed for extended service intervals up to 80,467 km [50,000 mi] when using TMC RP329 or RP330
coolants and is used for cooling systems up to 76 liters [20 gal]. Refer to Cummins® Coolant Requirements and
Maintenance, Bulletin 3666132.
3 This filter has been designed for extended service intervals of 80,467 to 241,402 km [50,000 to 150,000 mi]. It has
no chemical additives and can be used in the following systems:
• Cooling systems above 76 liters [20 gal] in capacity.
• See maintenance chart below.
When using WF2127 filter, the following volumes of treatment must be added at the designated distances:
Cooljng System Capacity 80,467 km [50,000 mi] Service 241,402 km [150,000 mi] Service
Interval with RP329/330 Coolant or Interval with E S Coolant ( E S Liquid)
Treated Water (Fleetcool or DCA4)
0 to 76 liters [0 to 20 gal] 0.95 liters [1 qt] (10 units) 0.95 liters [1 qt] (15 units)
76 to 151 liters [20 to 40 gal] 1.89 liters [2 qt] (20 units) 1.89 liters [2 qt] (30 units)
151 to 227 liters [40 to 60 gal] 2.84 liters [3 qt] (30 units) 2.84 liters [3 qt] (45 units)
227 to 303 liters [60 to 80 gal] 3.79 liters [4 qt] (40 units) 3.79 liters [4 qt] (60 units)
303 to 379 liters [80 to 100 gal] 0.94 liters [5 qt] (50 units) 0.94 liters [5 qt] (75 units)
NOTE: Filters must meet Cummins Inc. Source Approval Method 10,769. Fleetguard® filters meet Cummins Inc.
Source Approval Method 10,769. The standard filter for the Signature™ engine is Fleetguard® WF2126. For systems
larger than 379 liters [100 gal], use 0.94 liters [1 qt] per 57 liters [15 gal]. Consult vehicle manufacturer for total cooling
system capacity.
Fuel Recommendations and Specifications QSX15
Page V-10 Section V - Maintenance Specifications

Fuel Recommendations and Specifications

Fuel Recommendations

AWARNINGA
Do not bleed the fuel system of a hot engine; this can result in fuel spilling onto a hot exhaust manifold, which
can cause a fire.

ACAUTIONA
Due to the precise tolerances of diesel injection s y s t e m s , it is extremely important that the fuel be kept clean
and free of dirt or water. Dirt or water in the system can cause severe damage to both the fuel pump and the
fuel injectors.

ACAUTIONA
Do not use diesel fuel blended with lubricating oil in engines equipped with an aftertreatment device. Service
intervals for aftertreatment devices will be reduced.

Fuel Recommended Properties:

Cummins Inc. recommends the use of fuels that meet the following specifications:

Property Recommended
Specifications
Viscosity (ASTM 1.3 to 4.1 centistokes
D445) [1.3 to 4.1 mm per
second] at 4 0 ° C
[104°F].
Cetane Number 40 minimum above
(ASTM D613) 0 ° C [32°Fj. 45
minimum below 0 ° C
[32° F].
Sulfur Content Not to exceed 0.05
(ASTM D129 or mass percent for
D1552) engines without
aftertreatment
devices. For engines
with aftertreatment
devices, sulfer
content can not
exceed 0.0015 (15
ppm) mass percent.
Active Sulfur (ASTM Copper strip
D130) corrosion not to
exceed number 3
rating after three
hours at 5 0 ° C [122°
F].
Water and Sediment Not to exceed 0.05
(ASTM D1796) volume percent.
Carbon Residue Not to exceed 0.35
(Rams bottom, mass percent on 10
ASTM D524 or volume percent
Conradson, ASTM residuum.
D189)
Density (ASTM 42 to 30° API gravity
D287) at 0.816 to 0.876 g/cc
at 15°C [60°F].
Cloud Point (ASTM 6°C [10°F] below
D97) lowest ambient
temperature at which
the fuel is expected
to operate.
QSX15 Fuel Recommendations and Specifications
Section V - Maintenance Specifications Page V-11

Ash (ASTM D482) Not to exceed 0.02

mass percent (0.05
mass percent with
lubricating oil
blending). Oil
blending is
prohibited on
engines with
aftertreatment
devices.
Distillation (ASTM The distillation curve
D86) must be smooth and
continuous.
Acid Number (ASTM Not to exceed 0.1 mg
D664) KOA per 100 ml.
1. For additonal information on fuel recommendations and specifications, refer to Fuel for Cummins® Engines, Bulletin
3379001.
t
Refer to Procedure 205-001 in Section L.
Lubricating Oil Recommendations and Specifications QSX15
Page V-12 Section V - Maintenance Specifications

Lubricating Oil Recommendations and Specifications

AfterMarket Oil Additive Usage
Cummins Inc. does not recommend the use of aftermarket oil additives. Present high-quality fully additive engine
lubricating oils are very sophisticated, with precise amounts of additives blended into the lubricating oil to meet
stringent requirements defined in (1) Cummins® Engineering Specification CES 20076 that is similar to API CH-4, in
(2) CES 20078 that is similar to API CI-4, and in (3) CES 20081 that is similar to API CJ-4. These furnished oils meet
performance characteristics that conform to the lubricant industry standards. Aftermarket lubricating oil additives are
not necessary to enhance engine oil performance and in some cases can reduce the finished oil's capability to protect
the engine.

New Engine Break-in Oils

Special "break-in" engine lubricating oils are not recommended for new or rebuilt Cummins® engines. Use the same
lubricating oil that will be used during normal operation.
QSX15 Coolant Recommendations and Specifications
Section V Maintenance Specifications Page V-13

Coolant Recommendations and

Specifications
Fully Formulated Coolant/Antifreeze © Cummins Inc.

AWARNINGA
Coolant is toxic. Keep away from children and pets.
If not reused, dispose of in accordance with local
environmental regulations.
NOTE: Low-silicate antifreeze meeting ASTM D4985 is
inadequate for these extended service intervals of 80,467
to 241,402 km [50,000 to 150,000 miles].
08c00150

Cummins Inc. recommends using either a 50/50 mixture

of good-quality water and fully formulated antifreeze, or
fully formulated coolant when filling the cooling system.
The fully formulated antifreeze or coolant must meet
CES14603 specifications.

Good-quality water is important for cooling system

performance. Excessive'levels of calcium and magnesium
contribute to scaling problems, and excessive levels of
chlorides and sulfates cause cooling system corrosion.
Water Quality
Calcium Magnesium Maximum 170 ppm
(Hardness) as ( C a C 0 + 3

MgC0 )3

Chloride 40 ppm as (CI)

Sulfate 100 ppm as ( S 0 )
4

Fully formulated antifreeze must be mixed with quality 329

50 320
water at a 50/50 ratio (40-percent to 60-percent working 41
l
311
range). A 50/50 mixture of antifreeze and water gives a s

i
32 302
-36°C [-33°F] freezing point and a 110°C [230°F] boiling 23 S
\
point, which is adequate for locations in North America.
The actual lowest freezing point of ethylene glycol
-4
-13
N t
-i J—248
257
>7
antifreeze is 68 percent. Using higher concentrations of -22
-31
antifreeze will raise the freezing point of the solution and -40
239
230

tI—
increase the possibility of a silica gel problem. -58
221
212
-76 203
194
-94 185
103 176
0 1 0 20 30 40 50 60 70 80 90 1 00
Coolant Recommendations and Specifications QSX15
Page V-14 Section V - Maintenance Specifications

A refractometer m u s t be used to measure the freezing

point of the coolant accurately.

z^v ©CumminsInc.

© Cummins inc.

raStoda

Do not use a floating ball hydrometer. Using a floating ball

hydrometer can give an incorrect reading.

Cooling System Sealing Additives

Do not use sealing additives in the cooling systems. The
use of sealing additives can:
1 I I1
• Build up in coolant low-flow areas
• Clog coolant filters
Sealing pi
Additive J) • Plug radiator and oil cooler.

\l 1 ra80 * a

Cooling System Soluble Oils

Do not use soluble oils in the cooling system. The use of
soluble oils can:
• Allow cylinder liner pitting
• Corrode brass, aluminum, and copper
• Damage heat transfer surfaces
• Damage seals and hoses.
QSX15 Coolant Recommendations and Specifications
Section V - Maintenance Specifications Page V-15

Supplemental Coolant Additive (SCA)

ACAUTIONA
The engines use aluminum parts that are in contact
with the coolant. Improper coolant, coolant filter
selection, and maintenance will likely result in
perforation of one of these parts. Insufficient
concentration of the coolant additives will result in
liner pitting and engine failure.
Fully formulated products contain SCAs and are required
to protect the cooling system from scale and fouling,
solder corrosion, and general corrosion. The coolant filter
is required to protect the cooling system from abrasive
materials, debris, and precipitated coolant additives,.

Fleetguard® DCA4 Service Filters and Liquid Precharge

Coolant Filter Options for Standard Service or Extended Service Intervals:
WF2125 - This filter designed for use with a Fleetguard® extended service cooling system, which extends cooling
system service up to 1 year, 241,402 km [150,000 miles], or 4000 hours, whichever comes first. This filter is used for
cooling systems up to 76 liters [20 gal]. Refer to Service Bulletin, Coolant Requirements and Maintenance, Bulletin
3666132. Fleetguard® ES coolant must be used for all fill and top-off, which is critical for extended cooling system
maintenance intervals.
WF2126 - This filter is designed for extended service intervals up to 80,467 km [50,000 miles] when using TMC RP329
or RP330 coolants and is used for cooling system up to 76 liters [20 gal]. Refer to Service Bulletin, Coolant
Requirments and Maintenance, Bulletin 3666132.
WF2127 - This filter has been designed for extended service interval of 80,467 to 241,402 km [50,000 to 150,000
miles]. It has no chemical additives and can be used in the following systems:
• Cooling systems above 76 liters [20 gal] in capacity.
• See maintenance chart in this procedure.
When using WF2127 filter, the following volumes of treatment must be added at the designated mileages:
Cooling System 80,467 km [50,000 241,402 km
Capacity mile] Service [150,000 mile] -
Interval with the Service Interval
RP329/330 Coolant with E S Coolant ( E S
or Treated Water Liquid).
(Fleetcool or DCA4)
0 to 76 liters [0 to 20 1 liter [1 qt] (10 units) 1 liter [1 qt] (15 units)
gai]
76 to 151 liters [20 to 1.9 liter [2 qt] (20 1.9 liter [2 qt] qt (30
40 gal] units) units
151 to 227 liters [40 2.8 liters [3 qt] (30 2.8 liters [3 qt] (45
to 60 gal] units) units)
227 to 303 liters [60 3.8 liters [4 qt] (40 3.8 liters [4 qt] (60
to 80 gal] units) units)
303 to 379 liters [80 4.7 liters [5 qt] (50 4.7 liters [5 qt] (75
to 100 gal] units) units)
NOTE: Filters must meet Cummins Inc. SAM 10769. Fleetguard® filters meet Cummins Inc. SAM 10769. For systems
larger than 416 liters [100 gal], use 1 liter [1 qt] of SCA per 57 liters [15 gal]. Consult the vehicle manufacturer for total
cooling system capacity.

Testing S C A Concentration Level CC-2602 Test Kit

Precautions and Instructions for Proper Kit Use
Carefully follow the instructions to test the coolant. Take the appropriate action recommended by the kit.
• The coolant sample to be tested must be between 10 and 54°C [50 and 130°F]. If the sample is too cold or too
hot, you will get incorrect results.
Coolant Recommendations and Specifications QSX15
Page V-16 Section V - Maintenance Specifications

• To get the best color match results, compare test strip pads to the color chart in daylight or under cool white
fluorescent lighting. If unsure about a specific color match when a test does fall between two colors on the color
chart, choose the lower numbered (or lettered) block. It is safer to underestimate your results than to overestimate.
• The test strips do have a limited shelf life and are sensitive to humidity and extreme heat. Proper handling and
storage is necessary to protect the life of the strips.
• Keep the cap tightly sealed, on the test strip bottle except when removing a strip. Store away from direct sunlight
and in an area where the temperature will generally stay below 3 2 ° C [90°F].
• Do not use the test strips after the expiration date stamped on the bottle.
• Discard the kit if the top pad on the unused strips have turned light brown.
• Use one strip at a time and take care not to touch any of the pads on the strip. Doing so will contaminate the pads
and skew the test results.
• If the strip container is left uncapped for 24 hours, moisture in the air will render the strips useless, even though
no discoloration will be evident.
• Only use the color chart supplied with the kit.
• Following the correct test times is very important. Use a clock or stopwatch.
• Do not utilize the test kit to maintain minimum SCA concentration levels (i.e., 1.5 units).
• When performing service that requires draining the cooling system, take special precautions to collect coolant in
a clean non-galvanized container, seal coolant to prevent contamination, and save for reuse.

Probablizer:
• 3318169S Plug - Installs on the engine for easy coolant sampling
• 3318168S Cap - Use with Monitor C™ bottle to sample coolant

• CC2700 Monitor C™ - Use lab analysis of coolant samples for more detailed analysis.

CC2602 Coolant Test kit

• Works with any SCA formulation. Call 1-800-22FILTER (800-223-4583) if you have this test kit and the color chart
does not show the number of units of SCA gallon of coolant.

Test Intervals

AWARNINGA
Do not remove the pressure cap from a hot engine.
Wait until the coolant temperature is below 5 0 ° C
[120°F] before removing the pressure cap. Heated
coolant spray or steam c a n cause personal injury.
Testing is recommended if the operator is not sure of his
cooling system condition due to leaks, uncontrolled
topping off of the system, or major coolant loss.
If the concentration is below 1.2 units per 3.8 liters [1 gal],
replace the filter and precharge with liquid.

Check the SCA concentration level at least every 6

months, and anytime the coolant condition is unknown or
corrosion is apparent within the cooling system.
Use Fleetguard® coolant test kit, CC2602, to check the
concentration level. Instructions are included with the test
kit.
Call the following numbers to get answers to any
questions you have about cooling system maintenance:
Cummins Inc. Fleetguard®
1-800-DIESELS 1-800-22FILTER
1-800-343-7357 1-800-223-4583
QSX15 Coolant Recommendations and Specifications
Section V - Maintenance Specifications Page V-17

Coolant Replacement Requirements

AWARNINGA
Do not remove the pressure cap from a hot engine.
Wait until the coolant temperature is below 5 0 ° C
[120°F] before removing the pressure cap. Heated
coolant spray or steam can c a u s e personal injury.

AWARNINGA
Coolant is toxic. Keep away from children and pets. 50/50 (SCA) Precharge
Mixture (1.5 units per
If not reused, dispose of in accordance with local U.S. Gallon)
environmental regulations.
NOTE: Dispose of used coolant/antifreeze in accordance
with federal, state, and local laws and regulations.
Drain and flush the cooling system after 6000 hours or 3
years of service. However, if Fleetguard® ES coolant and
ES filters are used, check chloride, sulfate, and pH levels
according to Service Bulletin, Coolant Requirements and
Maintenance, Bulletin 3666132, to determine whether the
coolant must be replaced. Refill with either new fully
formulated coolant or ES coolant.
Drive Belt Tension QSX15
Page V-18 Section V - Maintenance Specifications

Drive Belt Tension

Tension Chart
S A E Belt Size Belt Tension Gauge Part No. Belt Tension New Belt Tension Range U s e d *
Click-type Burroughs N Ibf N Ibf
0.380 in 3822524 620 140 270 to 490 60 to 110
0.440 in 3822524 620 140 270 to 490 60 to 110
1/2 in 3822524 ST-1138 620 140 270 to 490 60 to 110
11/16 in 3822524 ST-1138 620 140 270 to 490 60 to 110
3/4 in 3822524 ST-1138 620 140 270 to 490 60 to 110
7/8 in 3822524 ST-1138 620 140 270 to 490 60 to 110
4 rib 3822524 ST-1138 620 140 270 to 490 60 to 110
5 rib 3822524 ST-1138 670 150 270 to 530 60 to 120
6 rib 3822525 ST-1293 710 160 290 to 580 65 to 130
8 rib 3822525 ST-1293 890 200 360 to 710 80 to 160
10 rib 3822525 3823138 1110 250 440 to 890 100 to 200
12 rib 3822525 3823138 1330 300 530 to 1070 120 to 240
12 rib K section 3822525 3823138 1330 300 890 to 1070 200 to 240
31 rib - 3164750 1668 375 1330 to 1560 300 to 350
NOTE: This chart does not apply to automatic belt tensioners.
* A belt is considered used if it has been in service for ten minutes or longer.
* If used belt tension is less than the minimum value, tighten the belt to the maximum used belt value.
QSX15 Engine Component Torque Values
Section V - Maintenance Specifications Page V-19

Engine Component Torque Values

General Information

Component Wrench Size Torque Value

N*m ft-lb
Oil Pan Drain Plug 47 35
Rocker Cover Capscrews 10 mm 25 16
Air Intake Piping V-Band Clamps 7/16 8.5 75 in-lb
Injector Adjusting Screw Locknut 24 mm 75 55
Injector Adjusting Screw 8 mm 8 70 in-lb
Valve Adjusting Screw 6 mm .6 5 in-lb
Valve Adjusting Screw Locknut 19 mm 45 33
Engine Brake Adjusting Screw 3 mm N/A N/A
Engine Brake Adjusting Screw Locknut 13 mm 20 15
Turbocharger Oil Drain Capscrews 13 mm 25 16
Turbocharger Male Union Elbow 22 mm 30 22
Turbocharger Oil Supply Line Fitting • 21 mm 30 22
Turbocharger V-Band Clamps 7/16 8.5 75 in-lb
Turbocharger Mounting Nuts 15 mm 60 45
Crankcase Breather Cover Bolts 6 mm .68 6 in-lb
Aftertreatment V-Band Clamps 10 mm 20 180 in-lb
Differential Pressure Sensing Tube Nuts 5/8 55 40
Aftertreatment Mounting Capscrews 10 mm 20 180 in-lb
Capscrew Markings and Torque Values QSX15
Page V-20 Section V Maintenance Specifications

Capscrew Markings and Torque Values

General Information

ACAUTIONA
W h e n replacing c a p s c r e w s , always use a c a p s c r e w of t h e same m e a s u r e m e n t and s t r e n g t h as the c a p s c r e w
b e i n g replaced. Using t h e w r o n g c a p s c r e w s can result in engine d a m a g e .
Metric capscrews and nuts are identified by the grade number stamped on the head of the capscrew or on the surface
of the nuts. U.S. Customary capscrews are identified by radial lines stamped on the head of the capscrew.
The following examples indicate how capscrews are identified:

Metric-M8-1.25X25

Major thread diameter in millimeters

Distance between threads in millimeters-

Length in millimeters-

Always use the torque values listed in the following tables when specific torque values are not available.
Do not use the torque values in place of those specified in other sections of this manual.
The torque values in the table are based on the use of lubricated threads.
When the ft-lb value is less than 10, convert the ft-lb value to in-lb to obtain a better torque with an in-lb torque
wrench. Example: 6 ft-lb equals 72 in-lb.

U.S. Customary [5/16 X 18 X 1-1/2]

•(Pi - f*i i tn fTiln*£hf!

5/16 18 1-1/2
:

Major thread diameter in inches

Number of threads per inch

Length in inches

• Always use the torque values listed in the following tables when specific torque values are not available.
• Do not use the torque values in place of those specified in other sections of this manual.
• The torque values in the table are based on the use of lubricated threads.
• When the ft-lb value is less than 10, convert the ft-lb value to in-lb to obtain a better torque with an in-lb torque
wrench. Example: 6 ft-lb equals 72 in-lb.

Capscrew Markings and Torque Values - Metric

Commercial Steel Class
8.8 10.9 12.9
Capscrew Head Markings

Body Torque Torque Torque

Size
Diamet Cast Iron Aluminium Cast Iron Aluminium Cast Iron Aluminium
er
mm N«m ft-lb N»m ft-lb ft-lb N«m ft-lb N»m ft-lb N«m ft-lb
6 9 5 7 4 13 10 7 4 14 9 7 4
7 14 9 11 7 18 14 11 7 23 18 11 7
QSX15 Capscrew Markings and Torque Values
Section V - Maintenance Specifications Page V-21

Body Torque Torque Torque

Size
Diamet Cast Iron Aluminium Cast Iron Aluminium Cast Iron Aluminium
er
mm N»m ft-lb N»m ft-lb N»m ft-lb N»m ft-lb N»m ft-lb N«m ft-lb
8 23 17 18 14 33 25 18 14 40 29 18 14
10 45 33 30 25 65 50 30 25 70 50 30 25
12 80 60 55 40 115 85 55 40 125 95 55 40
14 125 90 90 65 180 133 90 65 195 145 90 65
16 195 140 140 100 280 200 140 100 290 210 140 100
18 280 200 180 135 390 285 180 135 400 290 180 135
20 400 290 — — 550 400 — — — — — —

Capscrew Markings and Torque Values - U.S. Customary

SAE Grade Number
Capscrew Head Markings
These are aii SAE Grade 5 (3 line}
Inc.
ins Inc
Capscrew Torque - Grade S Capscrew Capscrew Torque - Grade 8 Capscrew
Capscrew Cast Iron Aluminium Cast Iron Aluminium
Body Size
N»m ft-lb N«m ft-lb N«m ft-lb N»m ft-lb
1/4-20 9 7 8 6 15 11 8 6
1/4-28 12 9 9 7 18 13 9 7
5 / 1 6 - 18 20 15 16 12 30 22 16 12
5/16-24 23 17 19 14 33 24 19 14
3 / 8 - 16 40 30 25 20 55 40 25 20
3/8 - 24 40 30 35 25 60 45 35 25
7/16-14 60 45 45 35 90 65 45 35
7/16-20 65 50 55 40 95 70 55 40
1/2- 13 95 70 75 55 130 95 75 55
1/2-20 100 75 80 60 150 110 80 60
9/16-12 135 100 110 80 190 140 110 80
9/16-18 150 110 115 85 210 155 115 85
5/8-11 180 135 150 110 255 190 150 110
5/8-18 210 155 160 120 290 215 160 120
3 / 4 - 10 325 240 255 190 460 340 255 190
3/4-16 365 270 285 210 515 380 285 210
7/8-9 490 360 380 280 745 550 380 280
7/8-14 530 390 420 310 825 610 420 310
1 -8 720 530 570 420 1100 820 570 420
1 - 14 800 590 650 480 1200 890 650 480
Capscrew Markings and Torque Values QSX15
Page V-22 Section V - Maintenance Specifications

Notes
QSX15
Section W - Warranty
Page W-a

Section W - Warranty
Section Contents

All Engines International Industrial (Off-Highway)

All Engines United States And Canada Industrial (Off-Highway) wt
All Engines Worldwide Generator Drive ^ i
All Engines Worldwide Commercial Marine Propulsion Auxiliary^ P r o d u c t s W 11
California Emission Control System Warranty, Off-Highway W 15
Page W-b QSX15
Section W - Warranty
QSX15 All Engines Worldwide Generator Drive
Section W - Warranty Page W-1

All Engines Worldwide Generator Drive

Engines Warranted
This Warranty applies to new Engines sold by Cummins and delivered to the first user on or after April 1, 1999, that
are used in generator drive application anywhere in the world where Cummins approved service is available. These
Engines will have the following rating designations:
Standby Power Rating
Engines of this rating are applicable for supplying emergency power for the duration of the utility power outage. No
overload capability is available for this rating. Under no condition is an Engine allowed to operate in parallel with the
public utility at the Standby Power rating. This rating should be applied where reliable utility power is available. A
Standby rated Engine is to be sized for a maximum of an 80 percent average load factor and 200 hours of operation
per year. This includes less than 25 hours per year at the Standby Power rating. Standby rating should never be
applied except in true emergency power outages. Negotiated power outages contracted with a utility company are
not considered an emergency.

Unlimited Time Running Prime Power Rating

Engines with this rating are available for an unlimited number of hours per year in a variable load application. Variable
load is not to exceed a 70 percent average of the Prime Power rating during any operating period of 250 hours. Total
operating time at 100 percent Prime Power shall not exceed 500 hours per year.
A 10 percent overload capability is available for a period of one hour within a twelve hour period of operation. Total
operating time at the 10 percent overload power shall not exceed 25 hours per year.
Limited Time Running Prime Power Rating
Engines of this rating are available for a limited number of hours in a non-variable load application. It is intended for
use in situations where power outages are contracted, such as in utility power curtailment. Engines may be operated
in parallel to the public utility up to 750 hours per year at power levels never to exceed the Prime Power rating.
Limited Time Running Prime Power ratings differ from Unlimited Time Running in that even though the maximum
power output of the Engines are the same, the Limited Time Running allows the Engine to be parallel to Public Utility
and run at the full Prime Power rating and must never exceed the Prime Power rating.
Continuous/Base Power Rating
Engines with this rating are available for supplying utility power at a constant 100 percent load for an unlimited number
of hours per year. No overload capability is available for this rating.
Continuous/Base Power ratings differ from Unlimited Time Running Prime Power ratings in that the Continuous/Base
Load ratings are significantly reduced from the Prime Power ratings. Continuous/Base Load ratings have no load
factor or application restrictions.

Coverage
Base Engine Warranty
This Warranty covers any failures of the Engine, under normal use and service, which result from a defect in material
or factory workmanship (Warrantable Failure).
Coverage begins with the sale of the Engine by Cummins and continues for the Duration stated below. The Duration
commences either on the date of delivery of the Engine to the first user, or on the date the Engine is first leased,
rented or loaned, or when the Engine has been operated for 50 hours, whichever occurs first.

Base Engine Warranty

Duration
Whichever Occurs First
Rating Months Hours
Standby Power 24 400
Unlimited Prime Power 12 Unlimited
Limited Prime Power 12 750
Continuous/Base Power 12 Unlimited

Extended Major Components Warranty

The Extended Major Components Warranty applies to Engines other than B and C series and covers Warrantable
Failures of the Engine cylinder block, camshaft, crankshaft and connecting rods (Covered Parts). Bushing and bearing
All Engines Worldwide Generator Drive QSX15
Page W-2 Section W - Warranty

failures are not covered. This Coverage begins with the expiration of the Base Engine Warranty and continues for the
following stated Duration. The Duration commences either on the date of delivery of the Engine to the first user, or
on the date the Engine is first leased, rented or loaned, or when the Engine has been operated for 50 hours, whichever
occurs first.

Extended Major Components Warranty

Duration
Whichever Occurs First
Rating Months Hours
Standby Power 36 600
Unlimited Prime Power 36 10,000
Limited Prime Power 36 2,250
Continuous/Base Power 36 10,000

Consumer Products
This Warranty on Consumer Products in the United States is a LIMITED Warranty. CUMMINS IS NOT R E S P O N S I B L E
FOR INCIDENTAL OR C O N S E Q U E N T I A L D A M A G E S . Any implied Warranties applicable to Consumer Products
terminate concurrently with the expiration of the express Warranties applicable to the product. In the United States,
some states do not allow the exclusion of incidental or consequential damages, or limitations on how long an implied
Warranty lasts, so the limitations or exclusions herein may not apply to you.
T h e s e Warranties are made to all Owners in the chain of distribution, and Coverage continues to all
subsequent Owners until the end of the periods of Coverage.

Cummins Responsibilities
During Base Engine Warranty
Cummins will pay for all parts and labor needed to repair the damage to the Engine resulting from a Warrantable
Failure when performed during normal business hours. All labor costs will be paid in accordance with Cummins
published Standard Repair Time guidelines.
Cummins will pay for the lubricating oil, antifreeze, filter elements and other maintenance items that are not reusable
due to the Warrantable Failure.
Cummins will pay reasonable travel expenses for mechanics to travel to and from the Engine site, including meals,
mileage and lodging when the repair is performed at the site of the failure.
Cummins will pay reasonable labor costs for Engine removal and reinstallation when necessary to repair a Warrantable
Failure.
During the Extended Major Components Warranty
Cummins will pay for the repair or, at its option, replacement of the defective Covered Part and any Covered Part
damaged by a Warrantable Failure of the defective Covered Part.

Owner Responsibilities
During the Base Engine Warranty
Owner is responsible for the cost of lubricating oil, antifreeze, filter elements and other maintenance items replaced
during Warranty repairs unless such items are not reusable due to the Warrantable Failure.
During the Extended Major Components Warranty
Owner is responsible for the cost of all labor needed to repair the Engine, including the labor cost for Engine removal
and reinstallation. When Cummins elects to repair a part instead of replacing it, the Owner is not responsible for the
labor needed to repair the part.
Owner is responsible for the cost of all parts required for the repair except for the defective Covered Part and any
Covered Part damaged by a Warrantable Failure of the defective Covered Part.
Owner is responsible for the cost of lubricating oil, antifreeze, filter elements and other maintenance items replaced
during repair of a Warrantable Failure.
During the Base Engine and Extended Major Components Warranties
Cv.ner is responsible for the operation and maintenance of the Engine as specified in the applicable Cummins
Z: e ation and Maintenance Manual. Owner is also responsible for providing proof that all recommended maintenance
r

-=s _een performed.

QSX15 All Engines Worldwide Generator Drive
Section W - Warranty Page W-3

Before the expiration of the applicable Warranty, Owner must notify a Cummins distributor, authorized dealer or other
repair location approved by Cummins of any Warrantable Failure and make the Engine available for repair by such
facility. Service locations are listed on the Cummins Worldwide Service Locator at cummins.com.
Owner is responsible for communication expenses, meals, lodging and similar costs incurred as a result of a
Warrantable Failure.
Owner is responsible for non-Engine repairs, "downtime" expenses, fines, all applicable taxes, all business costs and
other losses resulting from a Warrantable Failure.
Owner is responsible for providing sufficient access to and reasonable ability to remove the Engine from the installation
in the event of a Warrantable Failure.
Owner is responsible for maintaining an operating Engine hourmeter. If the hourmeter is not operational, Engine usage
will be estimated at 400 hours per month.

Limitations
Engines with an emissions certification listed below must be operated using only diesel fuel having no more than the
corresponding maximum sulfur content. Failure to use the specified fuel (see also Cummins Fuel Bulletin #3379001)
can damage the Engine and aftertreatment system within a short period of time. This damage could cause the Engine
to become inoperable and failures attributable to the use of incorrect fuels will be denied Warranty Coverage.

Maximum sulfur levels by emissions certification level as listed on the Engine's dataplate are:
EPA 2007 max. 15 parts per million
EPA 2010 max. 15 parts per million
EPA Tier 4 Interim / Final max. 15 parts per million
EU Stage NIB 2011 max. 15 parts per million
Euro 4/5 max. 50 parts per million

Cummins is not responsible for failures or damage resulting from what Cummins determines to be abuse or neglect,
including, but not limited to: operation without adequate coolants or lubricants; overfueling; overspeeding; lack of
maintenance of lubricating, cooling or intake systems; improper storage, starting, warm-up, run-in or shutdown
practices; unauthorized modifications to the Engine. Cummins is also not responsible for failures caused by incorrect
oil or fuel or by water or diesel exhaust fluid, catalytic reagent, dirt or other contaminants in the fuel, oil, diesel exhaust
fluid, catalytic reagent or intake air system.
This Warranty does not apply to accessories supplied by Cummins which bear the name of another company. Such
non-warranted accessories include, but are not limited to: alternators, starters, f a n s * * , air conditioning compressors,
clutches, filters, transmissions, air cleaners and safety shutdown switches.
Before a claim for excessive oil consumption will be considered, Owner must submit adequate documentation to show
that consumption exceeds Cummins published standards.
Failure of belts and hoses supplied by Cummins is not covered beyond the first 500 hours or one year of operation,
whichever occurs first after the Warranty start date.
Parts used to repair a Warrantable Failure may be new Cummins parts, Cummins approved rebuilt parts or repaired
parts. Cummins is not responsible for failures resulting from the use of parts not approved by Cummins.
A new Cummins or Cummins approved rebuilt part used to repair a Warrantable Failure assumes the identity of the
part it replaced and is entitled to the remaining Coverage hereunder.
Cummins is not responsible for Engine performance problems or failures resulting from:
1. Use or application of the Engine inconsistent with its rating designation as set forth above.
2. Inadequate or incorrect installations deviating from Cummins Generator Drive Installation Guidelines.
CUMMINS IS NOT R E S P O N S I B L E F O R WEAR OR W E A R O U T O F C O V E R E D P A R T S .
CUMMINS IS NOT R E S P O N S I B L E F O R INCIDENTAL OR C O N S E Q U E N T I A L D A M A G E S .
T H E W A R R A N T I E S S E T F O R T H HEREIN A R E T H E S O L E W A R R A N T I E S MADE B Y CUMMINS IN R E G A R D TO
T H E S E E N G I N E S . CUMMINS M A K E S NO O T H E R W A R R A N T I E S , E X P R E S S OR IMPLIED, OR O F
MERCHANTABILITY OR F I T N E S S F O R A P A R T I C U L A R P U R P O S E .
In the United States* and Canada, this Warranty gives you specific legal rights, and you may also have other rights
which vary from state to state.
Outside the United States* and Canada, in case of consumer sales, in some countries, the Owner has statutory rights
which cannot be affected or limited by the terms of this Warranty.
Nothing in this Warranty excludes or restricts any contractual rights the owner may have against third parties.
All Engines Worldwide Generator Drive QSX15
Page W-4 Section W - Warranty

* Includes American Samoa, the Commonwealth of Northern Mariana Islands, Guam, Puerto Rico and the U.S. Virgin
Islands.
* * Alternators, starters and fans ARE covered for the duration of the Base Engine Warranty on B3.3 Engines.
QSX15 All Engines United States And Canada Industrial (Off-H [...]
Section W - Warranty Page W-5

All Engines United States And Canada Industrial (Off-Highway)

Coverage
Products Warranted
This Warranty applies to new Engines sold by Cummins and delivered to the first user on or after April 1, 1999, that
are used in Industrial (Off-Highway) applications in the United States* and Canada, except for Engines used in marine,
generator drive and certain defense applications, for which different Warranty Coverage is provided.
Base Engine Warranty
This Warranty covers any failures of the Engine, under normal use and service, which result from a defect in material
or factory workmanship (Warrantable Failures).
Coverage begins with the sale of the Engine by Cummins. Coverage continues for two years or 2,000 hours of
operation, whichever occurs first, from the date of delivery of the Engine to the first user, or from the date the unit is
first leased, rented or loaned, or when the Engine has been operated for 50 hours, whichever occurs first. If the 2,000
hour limit is exceeded during the first year, Coverage continues until the end of the first year.
Extended Major Components Warranty
The Extended Major Components Warranty covers Warrantable Failures of the Engine cylinder block, camshaft,
crankshaft and connecting rods (Covered Parts).
Bushing and bearing failures are not covered.
This Coverage begins with the expiration of the Base Engine Warranty and ends three years or 10,000* hours of
operation from the date of delivery of the Engine to the first user, or from the date the unit is first leased, rented or
loaned, or from when the Engine has been operated for 50 hours, whichever occurs first.
* 3,000 hours for A Series Engines.
Consumer Products
The Warranty on Consumer Products in the United States is a LIMITED Warranty. CUMMINS IS NOT R E S P O N S I B L E
FOR INCIDENTAL OR C O N S E Q U E N T I A L DAMAGES. Any implied Warranties applicable to Consumer Products in
the United States terminate concurrently with the expiration of the express Warranties applicable to the product. In
the United States, some states do not allow the exclusion of incidental or consequential damages, or limitations on
how long an implied Warranty lasts, so the limitations or exclusions herein may not apply to you.
T h e s e Warranties are made to all Owners in the chain of distribution, and Coverage continues to all
subsequent Owners until the end of the periods of Coverage.

Cummins Responsibilities
During The Base Engine Warranty
Cummins will pay for all parts and labor needed to repair the damage to the Engine resulting from a Warrantable
Failure.
Cummins will pay for the lubricating oil, antifreeze, filter elements and other maintenance items that are not reusable
due to the Warrantable Failure.
Cummins will pay reasonable costs for mechanics to travel to and from the equipment site, including meals, mileage
and lodging, when the repair is performed at the site of the failure.
Cummins will pay reasonable labor costs for Engine removal and reinstallation when necessary to repair a Warrantable
Failure.
During The Extended Major Components Warranty
Cummins will pay for the repair or, at its option, replacement of the defective Covered Part and any Covered Part
damaged by a Warrantable Failure of the defective Covered Part.

Owner Responsibilities
During The Base Engine Warranty
Owner is responsible for the cost of lubricating oil, antifreeze, filter elements and other maintenance items provided
during Warranty repairs unless such items are not reusable due to the Warrantable Failure.
During The Extended Major Components Warranty
Owner is responsible for the cost of all labor needed to repair the Engine, including the labor to remove and reinstall
the Engine. When Cummins elects to repair a part instead of replacing it, Owner is not responsible for the labor needed
to repair the part.
All Engines United States And Canada Industrial (Off-H [...] QSX15
Page W-6 Section W - Warranty

Owner is responsible for the cost of all parts required for the repair except for the defective Covered Part and any
Covered Part damaged by a Warrantable Failure of the defective Covered Part.
Owner is responsible for the cost of lubricating oil, antifreeze, filter elements and other maintenance items replaced
during repair of a Warrantable Failure.
During The Base Engine and Extended Major Components Warranties
Owner is responsible for the operation and maintenance of the Engine as specified in the applicable Cummins
Operation and Maintenance Manual. Owner is also responsible for providing proof that all recommended maintenance
has been performed.
Before the expiration of the applicable Warranty, Owner must notify a Cummins distributor, authorized dealer or other
repair location approved by Cummins of any Warrantable Failure and make the Engine available for repair by such
facility. Service locations are listed on the Cummins Worldwide Service Locator at cummins.com.
Owner is responsible for communication expenses, meals, lodging and similar costs incurred as a result of a
Warrantable Failure.
Owner is responsible for non-Engine repairs, "downtime" expenses, cargo damage, fines, all applicable taxes, all
business costs and other losses resulting from a Warrantable Failure.

Limitations
Engines with an emissions certification listed below must be operated using only diesel fuel having no more than the
corresponding maximum sulfur content. Failure to use the specified fuel (see also Cummins Fuel Bulletin #3379001)
can damage the Engine and aftertreatment system within a short period of time. This damage could cause the Engine
to become inoperable and failures attributable to the use of incorrect fuels will be denied Warranty Coverage.

Maximum sulfur levels by emissions certification level as listed on the Engine's dataplate are:
EPA 2007 max. 15 parts per million
EPA 2010 max. 15 parts per million
EPA Tier 4 Interim / Final max. 15 parts per million
EU Stage IIIB 2011 max. 15 parts per million
Euro 4/5 max. 50 parts per million

Cummins is not responsible for failures or damage resulting from what Cummins determines to be abuse or neglect,
including, but not limited to: operation without adequate coolants or lubricants; overfueling; overspeeding; lack of
maintenance of lubricating, cooling or intake systems; improper storage, starting, warm-up, run-in or shutdown
practices; unauthorized modifications of the Engine. Cummins is also not responsible for failures caused by incorrect
oil, fuel or diesel exhaust fluid or by water, dirt or other contaminants in the fuel, oil or diesel exhaust fluid.
For power units and fire pumps (package units), this Warranty applies to accessories, except for clutches and filters,
supplied by Cummins which bear the name of another company.
Except for power units and fire pumps, this Warranty does not apply to accessories which bear the name of another
company. Such non-warranted accessories include, but are not limited to: alternators, starters, f a n s * * , air conditioning
compressors, clutches, filters, transmissions, torque converters, steering pumps, and non-Cummins fan drives,
Engine compression brakes and air compressors.
Cummins Compusave units are covered by a separate Warranty.
Before a claim for excessive oil consumption will be considered, Owner must submit adequate documentation to show
that consumption exceeds Cummins published standards.
Failures of belts and hoses supplied by Cummins are not covered beyond the first 500 hours or one year of operation,
whichever occurs first.
Parts used to repair a Warrantable Failure may be new Cummins parts, Cummins approved rebuilt parts or repaired
parts. Cummins is not responsible for failures resulting from the use of parts not approved by Cummins.
A new Cummins or Cummins approved rebuilt part used to repair a Warrantable Failure assumes the identity of the
part it replaced and is entitled to the remaining Coverage hereunder.
For all A Series Applications, including Industrial, travel reimbursement for non-transportable equipment will be limited
to 4.0 hours, $0.25/mile and 250 miles maximum. Any costs beyond this limit are the customer's responsibility.
CUMMINS D O E S NOT C O V E R WEAR OR W E A R O U T O F C O V E R E D P A R T S .
CUMMINS IS NOT R E S P O N S I B L E F O R INCIDENTAL OR C O N S E Q U E N T I A L DAMAGES.
QSX15 All Engines United States And Canada Industrial (Off-H [...]
Section W - Warranty Page W-7

T H E S E W A R R A N T I E S S E T F O R T H HEREIN A R E T H E S O L E W A R R A N T I E S MADE B Y CUMMINS IN R E G A R D

TO T H E S E ENGINES. CUMMINS MAKES NO OTHER W A R R A N T I E S , E X P R E S S OR IMPLIED, OR O F
MERCHANTABILITY OR F I T N E S S FOR A P A R T I C U L A R P U R P O S E .
This Warranty gives you specific legal rights, and you may also have other rights which vary from state to state.

Emission Warranty
Products Warranted
This Emission Warranty applies to new Engines marketed by Cummins that are used in the United States* in vehicles
designed for Industrial Off-Highway use. This Warranty applies to Engines delivered to the ultimate purchaser on or
after April 1, 1999 for Engines up to 750 horsepower, on or after January 1, 2000 for Engines 751 horsepower and
over.

Coverage
Cummins warrants to the ultimate purchaser and each subsequent purchaser that the Engine is designed, built and
equipped so as to conform at the time of sale by Cummins with all U.S. Federal emission regulations applicable at
the time of manufacture and that it is free from defects in workmanship or material which would cause it not to meet
these regulations within the longer of the following periods: (A) * * * F i v e years or 3,000 hours of operation, whichever
occurs first, as measured from the date of delivery of the Engine to the ultimate purchaser, or (B) The Base Engine
Warranty.
If the vehicle in which the Engine is installed is registered in the state of California, a separate California Emission
Warranty also applies.
Limitations
Engines with an emissions certification listed below must be operated using only diesel fuel having no more than the
corresponding maximum sulfur content. Failure to use the specified fuel (see also Cummins Fuel Bulletin #3379001)
can damage the Engine and aftertreatment system within a short period of time. This damage could cause the Engine
to become inoperable and failures attributable to the use of incorrect fuels will be denied Warranty Coverage.

Maximum sulfur levels by emissions certification level as listed on the Engine's dataplate are:
EPA 2007 max. 15 parts per million
EPA 2010 max. 15 parts per million
EPA Tier 4 Interim / Final max. 15 parts per million
EU Stage 1MB 2011 max. 15 parts per million
Euro 4/5 max. 50 parts per million

Failures, other than those resulting from defects in materials or workmanship, are not covered by this Warranty.
Cummins is not responsible for failures or damage resulting from what Cummins determines to be abuse or neglect,
including, but not limited to: operation without adequate coolant or lubricants; overfueling; overspeeding; lack of
maintenance of lubricating, cooling or intake systems; improper storage, starting, warm-up, run-in or shutdown
practices; unauthorized modifications of the Engine. Cummins is also not responsible for failures caused by incorrect
oil, fuel or diesel exhaust fluid or by water, dirt or other contaminants in the fuel, oil or diesel exhaust fluid.
Cummins is not responsible for non-Engine repairs, "downtime" expenses, cargo damage, fines, all business costs
or other losses resulting from a Warrantable Failure.
CUMMINS IS NOT R E S P O N S I B L E FOR INCIDENTAL OR C O N S E Q U E N T I A L DAMAGES.
* Includes American Samoa, the Commonwealth of Northern Mariana Islands, Guam, Puerto Rico and the U.S. Virgin
Islands.
* * Alternators, starters, and fans ARE covered for the duration of the Base Engine Warranty on A Series and B3.3
Engines.
* * Alternators and starters are covered for the duration of the Base Engine Warranty on QSK23 Engines.
* * * Emissions Warranty for BLPG Industrial Off-Highway Engines is 5 years / 3,500 hours.
All Engines International Industrial (Off-Highway) QSX15
Page W-8 Section W - Warranty

All Engines International Industrial (Off-Highway)

Coverage
PRODUCTS WARRANTED
This Warranty applies to new Engines sold by Cummins and delivered to the first user on or after April 1, 1999, that
are used in Industrial (Off-Highway) applications anywhere in the world where Cummins approved service is available,
except the United States* and Canada. Different Warranty Coverage is provided for Engines used in marine, generator
drive and certain defense applications.
B A S E ENGINE WARRANTY
This Warranty covers any failures of the Engine, under normal use and service, which result from a defect in material
or factory workmanship (Warrantable Failure).
Coverage begins with the sale of the Engine by Cummins. Coverage continues for two years or 2,000 hours of
operation, whichever occurs first, from the date of delivery of the Engine to the first user, or from the date the unit is
first leased, rented or loaned, or when the Engine has been operated for 50 hours, whichever occurs first. If the 2,000
hour limit is exceeded during the first year, Coverage continues until the end of the first year.
EXTENDED MAJOR COMPONENTS WARRANTY
The Extended Major Components Warranty covers Warrantable Failures of the Engine cylinder block, camshaft,
crankshaft and connecting rods (Covered Parts).
Bushing and bearing failures are not covered.
This Coverage begins with the expiration of the Base Engine Warranty and ends three years or 10,000* hours of
operation, from the date of delivery of the Engine to the first user, or from the date the unit is first leased, rented or
loaned, or when the Engine has been operated for 50 hours, whichever occurs first.
* 3,000 hours for A Series Engines.
T h e s e Warranties are made to all Owners in the chain of distribution, and Coverage continues to all
subsequent Owners until the end of the periods of Coverage.

Cummins Responsibilities
DURING THE B A S E ENGINE WARRANTY
Cummins will pay for all parts and labor needed to repair the damage to the Engine resulting from a Warrantable
Failure.
Cummins will pay for the lubricating oil, antifreeze, filter elements and other maintenance items that are not reusable
due to a Warrantable Failure.
Cummins will pay reasonable costs for mechanics to travel to and from the equipment site, including meals, mileage
and lodging, when the repair is performed at the site of the failure.
Cummins will pay reasonable labor costs for Engine removal and reinstallation when necessary to repair a Warrantable
Failure.
DURING T H E EXTENDED MAJOR COMPONENTS WARRANTY
Cummins will pay for the repair or, at its option, replacement of the defective Covered Part and any Covered Part
damaged by a Warrantable Failure of the defective Covered Part.

Owner Responsibilities
DURING T H E B A S E ENGINE WARRANTY
Owner is responsible for the cost of lubricating oil, antifreeze, filter elements and other maintenance items replaced
during Warranty repairs unless such items are not reusable due to the Warrantable Failure.
DURING THE EXTENDED MAJOR COMPONENTS WARRANTY
Owner is responsible for the cost of all labor needed to repair the Engine, including the labor to remove and reinstall
the Engine. When Cummins elects to repair a part instead of replacing it, Owner is not responsible for the labor needed
to repair the part.
Owner is responsible for the cost of all parts required for the repair except for the defective Covered Part and any
Covered Part damaged by a Warrantable Failure of the defective Covered Part.
O.'. ~e- is responsible for the cost of lubricating oil, antifreeze, filter elements and other maintenance items replaced
dL' - g repair of a Warrantable Failure.
QSX15 All Engines International Industrial (Off-Highway)
Section W - Warranty Page W-9

DURING T H E B A S E ENGINE AND EXTENDED MAJOR COMPONENTS WARRANTIES

Owner is responsible for the operation and maintenance of the Engine as specified in the applicable Cummins
Operation and Maintenance Manual. Owner is also responsible for providing proof that all recommended maintenance
has been performed.
Before the expiration of the applicable Warranty, Owner must notify a Cummins distributor, authorized dealer or other
repair location approved by Cummins of any Warrantable Failure and make the product available for repair by such
facility. Service locations are listed in the Cummins Worldwide Service Locator at cummins.com.
Owner is responsible for communication expenses, meals, lodging and similar costs incurred as a result of a
Warrantable Failure.
Owner is responsible for non-Engine repairs, "downtime" expenses, cargo damage, fines, all applicable taxes, all
business costs and other losses resulting from a Warrantable Failure.

Limitations
Engines with an emissions certification listed below must be operated using only diesel fuel having no more than the
corresponding maximum sulfur content. Failure to use the specified fuel (see also Cummins Fuel Bulletin #3379001)
can damage the Engine and aftertreatment system within a short period of time. This damage could cause the Engine
to become inoperable and failures attributable to the use of incorrect fuels will be denied Warranty Coverage.

Maximum sulfur levels by emissions certification level as listed on the Engine's dataplate are:
EPA 2007 max. 15 parts per million
EPA 2010 max. 15 parts per million
EPA Tier 4 Interim / Final max. 15 parts per million
EU Stage NIB 2011 max. 15 parts per million
Euro 4/5 max. 50 parts per million

Cummins is not responsible for failures or damage resulting from what Cummins determines to be abuse or neglect,
including, but not limited to: operation without adequate coolants or lubricants; overfueling; overspeeding; lack of
maintenance of lubricating, cooling or intake systems; improper storage, starting, warm-up, run-in or shutdown
practices; unauthorized modifications of the Engine. Cummins is also not responsible for failures caused by incorrect
oil, fuel or diesel exhaust fluid or by water, dirt or other contaminants in the fuel, oil or diesel exhaust fluid.
For power units and fire pumps (package units) the Warranty applies to accessories, except for clutches and filters
supplied by Cummins which bear the name of another company.
Except for the accessories noted previously, Cummins does not warrant accessories which bear the name of another
company. Such non-warranted accessories include, but are not limited to: alternators, starters, fans*, air conditioning
compressors, clutches, filters, transmissions, torque converters, steering pumps, non-Cummins fan drives and air
cleaners.
Cummins Compusave units are covered by a separate Warranty.
Before a claim for excessive oil consumption will be considered, Owner must submit adequate documentation to show
that consumption exceeds Cummins published standards.
Failures of belts and hoses supplied by Cummins are not covered beyond the first 500 hours or one year of operation,
whichever occurs first.
Parts used to repair a Warrantable Failure may be new Cummins parts, Cummins approved rebuilt parts or repaired
parts. Cummins is not responsible for failures resulting from the use of parts not approved by Cummins.
A new Cummins or Cummins approved rebuilt part used to repair a Warrantable Failure assumes the identity of the
part it replaced and is entitled to the remaining Coverage hereunder.
For all A Series Applications, including industrial, travel reimbursement for non-transportable equipment will be limited
to 4.0 hours, $0.25/mile and 250 miles maximum. Any costs beyond this limit are the customer's responsibility.
CUMMINS D O E S NOT C O V E R WEAR OR W E A R O U T O F C O V E R E D P A R T S .
CUMMINS IS NOT R E S P O N S I B L E F O R INCIDENTAL OR C O N S E Q U E N T I A L D A M A G E S .
T H E S E W A R R A N T I E S S E T F O R T H HEREIN A R E T H E S O L E W A R R A N T I E S MADE B Y CUMMINS IN R E G A R D
TO T H E S E E N G I N E S . CUMMINS MAKES NO O T H E R W A R R A N T I E S , E X P R E S S OR IMPLIED, OR O F
MERCHANTABILITY OR F I T N E S S FOR A P A R T I C U L A R P U R P O S E .
In case of consumer sales, in some countries, the Owner has statutory rights which cannot be affected or limited by
the terms of this Warranty.
Nothing in this Warranty excludes or restricts any contractual rights the Owner may have against third parties.
 All Engines International Industrial (Off-Highway)
PageW-10 Section W •

* Alternators, starters, and fans ARE covered for the duration of the Base Engine Warranty on A Series
Engines.

* Alternators and starters are covered for the duration of the Base Engine Warranty on QSK23 Engines.

IB

e *a:" \

a*
•er

interm

- ' —
All Engines International Industrial (Off-Highway) QSX15
Page W-10 Section W - Warranty

* Alternators, starters, and fans ARE covered for the duration of the Base Engine Warranty on A Series and B3.3
Engines.
* Alternators and starters are covered for the duration of the Base Engine Warranty on QSK23 Engines.
QSX15 All Engines Worldwide Commercial Marine Propulsion Aux [...]
Section W - Warranty Page W-11

All Engines Worldwide Commercial Marine Propulsion Auxiliary Products

Coverage
Products Warranted Marine
This Warranty applies to new Engines sold by Cummins Inc., hereinafter "Cummins", and used in Marine propulsion
and marine auxiliary applications anywhere in the world where Cummins approved service is available and delivered
to the first user on or after July 1, 2002. This Warranty excludes all Engines branded and sold as Cummins MerCruiser
Diesel Products. The 'Product' consists of a new Cummins Engine, as well as accessories, which are approved and
supplied by Cummins and which are either installed by Cummins or a Cummins authorized distributor. These Products
have the following designation:
MARINE P R O P U L S I O N AND MARINE AUXILIARY (EXCLUDING G E N E R A T O R DRIVE ENGINES)
Intermittent Rating
This power rating is intended for intermittent use in variable load applications where full power is limited to two hours
out of every eight hours of operation. Also, reduced power operations must be at or below 200 RPM of the maximum
rated RPM. This rating is an ISO3046 Fuel Stop Power Rating and is for applications that operate less than 1,500
hours per year.
Medium Continuous Rating
This power rating is intended for continuous use in variable load applications where full power is limited to six hours
out of every twelve hours of operation. Also, reduced power operations must be at or below 200 RPM of the maximum
rated RPM. This rating is an ISO3046 Fuel Stop Power Rating and is for applications that operate less than 3,000
hours per year.
Heavy Duty Rating
This power rating is intended for continuous use in variable load applications where full power is limited to eight hours
out of every ten hours of operation. Also, reduced power must be at least 200 RPM below the maximum rated RPM.
This rating is an ISO3046 Fuel Stop Power Rating and is for applications that operate less than 5,000 hours per year.
Continuous Rating
This power rating is intended for continuous use in applications requiring uninterrupted service at full power. This
rating is an ISO3046 Standard Power Rating.
MARINE G E N E R A T O R DRIVE
Prime Power
Engines with this rating are available for an unlimited number of hours per year in variable load applications. Variable
load is not to exceed a 70 percent average of the Prime Power rating during any operating period of 250 hours. Total
operating time at 100 percent Prime Power shall not exceed 500 hours per year.
A 10 percent overload capability is available for a period of one hour within a twelve hour period of operation. Total
operating time at the 10 percent overload power shall not exceed 25 hours per year. This power rating conforms to
ISO 8528 guidelines.
Continuous Power
Engines with this rating are available for supplying utility power at a constant 100 percent load for an unlimited number
of hours per year. No overload capability is available for this rating. 1

Continuous Power ratings differ from Prime Power ratings in that the Continuous Load ratings are significantly reduced
from the Prime Power ratings. Continuous Load ratings have no load factor or application restrictions. This power
rating conforms to ISO 8528 guidelines.
Base Engine Warranty
This Warranty covers any failures of the Product, under normal use and service, which result from a defect in Cummins
material or factory workmanship (Warrantable Failure). Coverage begins with the sale of the Engine by Cummins and
ends at the time and hours stated in the following table. The Duration commences on either the date of delivery of
the Product to the first end-user, or the date the unit is first leased, rented or loaned, or when the Product has been
operated for 50 hours, whichever occurs first.

Duration
Whichever Occurs First
Rating Years Hours
Intermittent 1 1,500
Medium Continuous 1 3,000
All Engines Worldwide Commercial Marine Propulsion Aux [...] QSX15
Page W-12 Section W - Warranty

Heavy Duty 1 5,000

Continuous 1 Unlimited

Prime Power 1 Unlimited

Continuous Power 1 Unlimited

Extended Major Components Warranty

The Extended Major Components Warranty applies to Engines other than B and C Series. It covers Warrantable
Failures of the Engine cylinder block, camshaft, crankshaft and connecting rods (Covered Parts). Bushing and bearing
failures are not covered. This Coverage begins with the expiration of the Base Engine Warranty and ends at three
years or 10,800 hours of operation, whichever occurs first, after the date of delivery to the first end-user, or the date
the unit is first leased, rented or loaned, or when the Product has been operated for 50 hours, whichever occurs first.
T h e s e Warranties are made to all Owners in the chain of distribution and Coverage continues to all subsequent
Owners until the end of the periods of Coverage.

Cummins Responsibilities
During Base Engine Warranty
Cummins will pay for all parts and labor needed to repair the damage to the Product resulting from a Warrantable
Failure when performed during normal business hours. All labor costs will be paid in accordance with Cummins
published Standard Repair Time guidelines.
When it is necessary for mechanics to make on-site Warranty repairs, Cummins will pay reasonable travel expenses,
including meals, mileage and lodging, for mechanics to travel to and from the repair dock.
Cummins will pay for the lubricating oil, antifreeze, filter elements and other maintenance items that are not reusable
due to the Warrantable Failure.
Cummins will pay for reasonable labor costs for Engine removal and reinstallation when necessary to repair a
Warrantable Failure.
During the Extended Major Components Warranty
Cummins will pay for the repair or, at its option, replacement of the defective Covered Part and any Covered Part
damaged by a Warrantable Failure of the defective Covered Part.

Owner Responsibilities
During the Base Engine Warranty
Owner is responsible for the cost of lubricating oil, antifreeze, filter elements and other maintenance items replaced
during Warranty repairs unless such items are not reusable due to the Warrantable Failure.
During the Extended Major Components Warranty
Owner is responsible for the cost of all labor needed to repair the Engine, including the labor cost for Engine removal
and reinstallation. When Cummins elects to repair a part instead of replacing it, the Owner is not responsible for the
labor needed to repair the part.
Owner is responsible for the cost of all parts required for the repair except for the defective Covered Part and any
Covered Part damaged by a Warrantable Failure of the defective Covered Part.
Owner is responsible for the cost of lubricating oil, antifreeze, filter elements and other maintenance items replaced
during repair of a Warrantable Failure.
During the Base Engine and Extended Major Components Warranties
Owner is responsible for the operation and maintenance of the Product as specified in the applicable Cummins
Operation and Maintenance Manual. Owner is also responsible for providing proof that all recommended maintenance
has been performed.
Before the expiration of the applicable Warranty, Owner must notify a Cummins distributor, authorized dealer, or other
repair location approved by Cummins of any Warrantable Failure and make the Engine available for repair by such
facility. Locations in the United States and Canada are listed in the Cummins U.S. and Canada Sales and Service
Directory; other locations are listed in the Cummins International Sales and Service Directory.
In the event of any Product failure, Owner is responsible for the cost of towing the boat to the repair dock and for all
associated docking and harbor charges.
Owner is responsible for communication expenses, meals, lodging and similar costs incurred as a result of a
Warrantable Failure.
QSX15 All Engines Worldwide Commercial Marine Propulsion Aux [...]
Section W - Warranty Page W-13

Owner is responsible for maintaining the Engine hourmeter in good working order at all times and to ensure that the
hourmeter accurately reflects the total hours of operation of the Product.
Owner is responsible for the costs to investigate complaints, unless the problem is caused by a defect in Cummins
material or factory workmanship.
Owner is responsible for non-Engine repairs, "downtime" expenses, cargo damage, fines, all applicable taxes, all
business costs and other losses resulting from a Warrantable Failure.

Limitations
Cummins is not responsible for failures or damage resulting from what Cummins determines to be abuse or neglect,
including, but not limited to: operation without adequate coolants or lubricants; overfueling; overspeeding; lack of
maintenance of cooling, lubricating or intake systems; improper storage, starting, warm-up, run-in or shutdown
practices; unauthorized modifications to the Engine. Cummins is also not responsible for failures caused by incorrect
oil or fuel, or by water, dirt or other contaminants in the fuel or oil.
Cummins is not responsible for failures resulting from:
1. Use or application of the Product inconsistent with its rating designation set forth above.
2. Incorrect installation.
Before a claim for excessive oil consumption will be considered, Owner must submit adequate documentation to show
that oil consumption exceeds Cummins published standards.
Cummins is not responsible for failures of marine maintenance components supplied by Cummins beyond ninety days
after the Coverage start date. Marine maintenance components include, but are not limited to: sea water pump
impellers, zinc plugs, oil filters, fuel filters, air filters, water filters, fuel/water separator filters, expansion tank pressure
caps.
Failure of belts and hoses supplied by Cummins are not covered beyond 90 days after the date of delivery of the
Product to the first user, or the date the unit is first leased, rented or loaned, or when the Product has been operated
for 50 hours, whichever occurs first.
Non-Cummins accessories are covered for the duration of the base Engine Warranty when supplied by Cummins as
part of a Marine Propulsion package unit. Otherwise, non-Cummins accessories are not covered.
Parts used in Warranty repairs may be new Cummins parts, Cummins approved rebuilt parts, or repaired parts.
Cummins is not responsible for failures resulting from the use of parts not supplied by Cummins.
Parts used to repair a Warrantable Failure may be new Cummins parts, Cummins approved rebuilt parts, or repaired
parts. Cummins is not responsible for failures resulting from the use of parts not approved by Cummins.
A new Cummins or Cummins approved rebuilt part used to replace a Warranted Part assumes the identity of the
Warranted Part it replaced and is entitled to the remaining Coverage hereunder.
Cummins Inc. reserves the right to interrogate Electronic Control Module (ECM) data for purposes of failure analysis.
CUMMINS D O E S NOT C O V E R WEAR OR W E A R O U T O F C O V E R E D P A R T S .
CUMMINS IS NOT R E S P O N S I B L E FOR INCIDENTAL OR C O N S E Q U E N T I A L DAMAGES.
THIS W A R R A N T Y AND T H E EMISSION WARRANTY S E T FORTH HEREIN A R E T H E S O L E W A R R A N T I E S MADE
B Y CUMMINS IN R E G A R D TO T H E S E ENGINES. CUMMINS MAKES NO OTHER W A R R A N T I E S , E X P R E S S OR
IMPLIED, OR O F MERCHANTABILITY OR F I T N E S S F O R A P A R T I C U L A R P U R P O S E .
In the United States** and Canada, this Warranty gives you specific legal rights, and you may also have other rights
which vary from state to state.
Outside the United States* * and Canada, in case of consumer sales, in some countries the Owner has statutory rights
which cannot be affected or limited by the terms of this Warranty.
Nothing in this Warranty excludes or restricts any contractual rights the Owner may have against third parties.

Emission Warranty
Products Warranted
This Emission Warranty applies to new Engines certified to United States EPA 40 CFR 94 sold by Cummins that are
installed on vessels flagged or registered in the United States**.
Coverage
Cummins warrants to the first user and each subsequent purchaser that the Engine is designed, built and equipped
so as to conform at the time of sale by Cummins with all United States Federal emission regulations applicable at the
time of manufacture and that it is free from defects in material or factory workmanship which would cause it not to
meet these regulations within the longer of the following periods: (A) Five years or 5,000 hours of operation, whichever
occurs first, as measured from the date of delivery of the Engine to the first user, or the date the unit is first leased,
All Engines Worldwide Commercial Marine Propulsion Aux [...] QSX15
Page W-14 Section W - Warranty

rented or loaned, or when the Engine has been operated for 50 hours, whichever occurs first, or (B) The Base Engine
Warranty.
Limitations
An Owner may elect to have maintenance, replacement or repair of the emission control parts performed by
a facility other than a Cummins distributor, an authorized dealer or a repair location approved by Cummins,
and may elect to use parts other than new genuine Cummins or Cummins approved rebuilt parts and
assemblies for such maintenance, replacement or repair; however, the cost of s u c h service or parts and
subsequent failures resulting from such service or parts will not be covered under this emission control
system Warranty.
Failures, other than those resulting from defects in materials or factory workmanship, are not covered by this Warranty.
Cummins is not responsible for failures or damage resulting from what Cummins determines to be abuse or neglect,
including, but not limited to: operation without adequate coolants or lubricants; overfueling; overspeeding; lack of
maintenance of lubricating, cooling or intake systems; improper storage, starting, warm-up, run-in or shutdown
practices; unauthorized modifications of the Engine. Cummins is also not responsible for failures caused by incorrect
oil or fuel or by water, dirt or other contaminants in the fuel or oil.
Cummins is not responsible for non-Engine repairs, "downtime" expenses, cargo damage, fines, all applicable taxes,
all business costs or other losses resulting from a Warrantable Failure.
CUMMINS IS NOT R E S P O N S I B L E FOR INCIDENTAL OR C O N S E Q U E N T I A L D A M A G E S .
** United States includes American Samoa, the Commonwealth of Northern Mariana Islands, Guam, Puerto Rico,
and the U.S. Virgin Islands.
QSX15 California Emission Control System Warranty, Off-Highwa [...]
Section W - Warranty Page W-15

California Emission Control System Warranty, Off-Highway

Products Warranted
This Emission Control System Warranty applies to off-road diesel engines certified with the California Air Resources
Board beginning with the year 1996 for engines up to 750 horsepower, beginning with the year 2000 for 751
horsepower and over, marketed by Cummins, and registered in California for use in industrial off-highway applications.

Your Warranty Rights and Obligations

The California Air Resources Board and Cummins Engine Company, Inc., are pleased to explain the emission control
system warranty on your engine. In California, new off-road diesel engines must be designed, built and equipped to
meet the State's stringent anti-smog standards. Cummins must warrant the emission control system on your engine
for the periods of time listed below provided there has been no abuse, neglect or improper maintenance of your engine.
Your emission control system may include parts such as the fuel injection system and the air induction system. Also
included may be hoses, belts, connectors and other emission-related assemblies.
Where a warrantable condition exists, Cummins will repair your off-road diesel engine at no cost to you including
diagnosis, parts and labor.

Manufacturer's Warranty Coverage

This warranty coverage is provided for 5 years or 3,000 hours of engine operation, whichever first occurs from the
date of delivery of the engine to the first user. If any emission-related part on your engine is defective, the part will be
repaired or replaced by Cummins.

i
 QSX15
Section W - Warranty
Page W-16

Coverage
This emission control system warranty applies to the following emission control parts:

Turbocharger Electronic Control System

Compressor Wheel Control Module

Intake Manifold Pressure Sensor
Turbine Wheel
Coolant Temperature Sensor
Turbine Oil Seal
Wastegate Valve
Wastegate Actuator/Controller

Intake Manifold
Charge Air Cooler

Exhaust Manifold

Fuel System
Actuators (Fueling & Timing)
Fuel Pressure Sensor
Injectors (TP)
QSX15
Section W - Warranty Page W-17

Owner's Warranty Responsibilities

As the off-road diesel engine owner, you are responsible for the performance of the required maintenance listed in
your Cummins Operation and Maintenance Manual. Cummins recommends that you retain all receipts covering
maintenance on your off-road diesel engine, but Cummins cannot deny warranty solely for the lack of receipts or for
your failure to ensure the performance of all scheduled maintenance.
You are responsible for presenting your off-road diesel engine to a Cummins dealer as soon as a problem exists. The
warranty repairs should be completed in a reasonable amount of time, not to exceed 30 days.
As the off-road diesel engine owner, you should also be aware that Cummins may deny you warranty coverage if your
off-road diesel engine or a part has failed due to abuse, neglect, improper maintenance or unapproved modifications.
Your engine is designed to operate on diesel fuel only. Use of any other fuel may result in your engine no longer
operating in compliance with California's emissions requirements.
If you have any questions regarding your warranty rights and responsibilities, you should contact Cummins Customer
Assistance Department at 1-800-343-7357 (1-800-DIESELS) or the California Air Resources Board at 9528 Telstar
Avenue, El Monte, CA 91731.
Prior to the expiration of the applicable warranty, Owner must give notice of any warranted emission control failure
to a Cummins distributor, authorized dealer or other repair location approved by Cummins and deliver the engine to
such facility for repair. Repair locations are listed in Cummins United States and Canada Service Directory.
Owner is responsible for incidental costs such as: communication expenses, meals, lodging incurred by Owner or
employees of Owner as a result of a warrantable failure.
Owner is responsible for business costs and losses, "downtime" expenses, and cargo damage resulting from a
warrantable failure. CUMMINS IS NOT RESPONSIBLE FOR OTHER INCIDENTAL OR CONSEQUENTIAL
DAMAGES, INCIDENTAL OR CONSEQUENTIAL DAMAGES INCLUDE BUT ARE NOT LIMITED TO FINES, THEFT,
VANDALISM OR COLLISIONS.

Replacement Parts
Cummins recommends that any service parts used for maintenance, repair or replacement of emission control
systems be new, genuine Cummins or Cummins approved rebuilt parts and assemblies, and that the engine be
serviced by a Cummins distributor, authorized dealer or the repair location approved by Cummins. The owner may
elect to have maintenance, replacement or repair of the emission control parts performed by a facility other than a
Cummins distributor, an authorized dealer or a repair location approved by Cummins, and may elect to use parts other
than new genuine Cummins or Cummins approved rebuilt parts and assemblies for such maintenance, replacement
or repair; however, the cost of such service or parts will not be covered under this emission control system warranty.

Cummins Responsibilities
Repairs and service will be performed by any Cummins distributor, authorized dealer or other repair location approved
by Cummins using new, genuine Cummins or Cummins approved rebuilt parts and assemblies. Cummins will repair
any of the emission control parts found by Cummins to be defective without charge for parts or labor (including
diagnosis which results in determination that there has been a failure of a warranted emission control part).

Emergency Repairs
In the case of an emergency where a Cummins distributor, authorized dealer, or other repair location approved by
Cummins is not available, repairs may be performed by any available repair location using any replacement parts.
Cummins will reimburse the Owner for expenses (including diagnosis), not to exceed the manufacturer's suggested
retail price for all warranted parts replaced and labor charges based on the manufacturer's recommended time
allowance for the warranty repair and the geographically appropriate hourly labor rate. A part not being available within
30 days or a repair not being complete within 30 days constitutes an emergency. Replaced parts and paid invoices
must be presented at a Cummins authorized repair facility as a condition of reimbursement for emergency repairs not
performed by a Cummins distributor, authorized dealer, or other repair location approved by Cummins.

Warranty Limitations
Cummins is not responsible for failures resulting from Owner or operator abuse or neglect, such as: operation without
adequate coolant, fuel or lubricants; overfueling; overspeeding; lack of maintenance of lubricating, cooling or air intake
systems; improper storage, starting, warm-up, run-in or shutdown practices.
The manufacturer warrants to the ultimate purchaser and each subsequent purchaser that the engine is designed,
built, and equipped so as to conform with all applicable regulations adopted by the Air Resources Board, and that it
is free from defects in materials and workmanship which cause the failure of a warranted part.
Any warranted part which is not scheduled for replacement as required maintenance, or which is scheduled only for
regular inspection to the effect of "repair or replace as necessary" is warranted for the warranty period.
 QSX15
PageW-18 Section W - Warranty

Any warranted part which is scheduled for replacement as required maintenance is warranted for the period of time
prior to the first scheduled replacement point for that part.
The owner will not be charged for diagnostic labor which leads to the determination that a warranted part is defective,
if the diagnostic work is performed at a warranty station.
The manufacturer is liable for damages to other engine components caused by the failure under warranty of any
warranted part.
Cummins is not responsible for failures resulting from improper repair or the use of parts which are not genuine
Cummins or Cummins approved parts.
These warranties, together with the express commercial warranties and emission warranty are the sole warranties of
Cummins. There are no other warranties, express or implied, or of merchantability or fitness for a particular purpose.
 Index
Page X-1

About the Manual i-2 Inspect for Reuse 5-3

General Information i-2 Cooling System V-4
Acronyms and Abbreviations i-15 General Information V-4
General Information i-15 Specifications V-4
Additional Service Literature L-1 Crankcase Breather (Internal) 6-3
General Information L-1 Replace '. 6-3
Air Cleaner Restriction 5-8 Crankcase Breather Tube 3-7
Maintenance Check > 5-8 Maintenance Check 3-7
Air Compressor Air Pressure Rises Slowly TS-3 Crankcase Breather Tube 6-1
Air Compressor Discharge Lines 7-1 Maintenance Check 6-1
General Information 7-1 Crankcase Gases (Blowby) Excessive TS-18
Maintenance Check 7-2 Cummins Customized Parts Catalog L-3
Air Compressor Noise is Excessive TS-4 General Information L-3
Air Compressor Pumping Excess Lubricating Oil into the Air System TS-5 Ordering the Customized Parts Catalog L-3
Air Compressor Will Not Maintain Adequate Air Pressure (Not Pumping Ordering by Telephone L-3
Continuously) TS-6 Ordering On-Line L-3
Air Compressor Will Not Stop Pumping TS-7 Cummins®/Fleetguard® Filter Specifications V-9
Air Intake Piping 3-7 Specifications V-9
Maintenance Check 3-7 Daily Maintenance Procedures - Overview 3-1
Air Intake System V-6 Engine Operation Report 3-1
Specifications V-6 General Information 3-1
Air Leaks, Air Intake and Exhaust Systems 5-4 Unusual Engine Noise 3-1
Maintenance Check 5-4 Distributors - International S-34
Variable Geometry 5-6 Locations S-34
Air Starting Motor A-1 Distributors and Branches S-5
General Information.. A-1 Australia S-25
Air Tanks and Reservoirs 3-7 Canada S-20
Drain 3-7 China, People's Republic S-23
All Engines International Industrial (Off-Highway) W-8 New Zealand S-29
All Engines United States And Canada Industrial (Off-Highway) W-5 United States S-5
All Engines Worldwide Generator Drive W-1 Division and Regional Offices S-3
All Engines Worldwide Commercial Marine Propulsion Auxiliary Products .... Locations -S-3
W-11 Drive Belt Tension V-18
Alternator Not Charging or Insufficient Charging TS-8 Tension Chart : V-18
Battery Cables and Connections A-1 Drive Belt, Cooling Fan A-9
Initial Check A-1 Clean and Inspect for Reuse A-9
Belt Tensioner, Automatic (Water Pump) A-15 Drives Alternator A-9
Finishing Steps A-22 Install A-10
Drives Alternator A-22 Drives Alternator A-10
Initial Check A-15 Remove A-9
Without EGR A-15 Drives Alternator > A-9
Inspect for Reuse A-18 Drive Belts 3-5
Drives Alternator A-18 Maintenance Check 3-5
Without EGR A-19 Electrical System V-8
Install A-20 Specifications V-8
Drives Alternator A-20 Electromagnetic Interference (EMI) 1-21
Automotive Applications Without EGR A-20 General Information 1-21
Industrial and Power Generation Application Without EGR A-21 System EMI Radiation Levels 1-21
Preparatory Steps A-15 System EMI Susceptibility 1-21
.Drives Alternator A-15 Electronic Controlled Fuel System 1-8
Remove A-16 Diagnostic Fault Codes 1-9
Drives Alternator A-16 Industrial Applications 1-9
Automotive Applications Without EGR A-16 Engine Protection System 1-15
Industrial and Power Generation Application Without EGR A-17 Fuel System Description 1-15
California Emission Control System Warranty, Off-Highway W-15 General Information 1-8
Capscrew Markings and Torque Values V-20 Emergency and Technical Service S-1
Capscrew Markings and Torque Values - Metric V-20 General Information S-1
Capscrew Markings and Torque Values - U.S. Customary V-21 Engine Brake - Low Retarding Power or Slow to Activate TS-20
General Information V-20 Engine Brake — One or More Cylinders Braking with Power Switch Off TS-
Charge-Air Piping 3-7 21
Maintenance Check 3-7 Engine Brake Does Not Operate TS-19
Cold Weather Starting 1-2 Engine Component Torque Values V-19
General Information 1-2 General Information V-19
Using Starting Aids 1-2 Engine Decelerates Slowly TS-22
Cold Weather Starting Aids 6-2 Engine Diagrams E-2
Maintenance Check 6-2 Engine Views E-2
Coolant Filter 5-1 Industrial CM570 and Power Generation without CM570 E-3
General Information 5-1 Engine Difficult to Start or Will Not Start (Exhaust Smoke) TS-23
Install 5-2 Engine Difficult to Start or Will Not Start (No Exhaust Smoke) TS-25
Remove 5-1 Engine Identification E-1
Coolant Level 3-3 ECM Dataplate E-1
Maintenance Check 3-3 Industrial Applications E-1
Coolant Loss - External TS-10 Power Generation E-1
Coolant Loss - Internal TS-11 Engine Dataplate E-1
Coolant Recommendations and Specifications V-13 Engine Mounts 6-3
Coolant Replacement Requirements V-17 Inspect 6-3
Cooling System Sealing Additives V-14 Engine Noise Excessive TS-26
Cooling System Soluble Oils V-14 Engine Noise Excessive — Combustion Knocks TS-28
Fleetguard® DCA4 Service Filters and Liquid Precharge V-15 Engine Operating Range 1-8
Fully Formulated Coolant/Antifreeze V-13 General Information 1-8
Supplemental Coolant Additive (SCA) V-15 Engine Power Output Low TS-29
Test Intervals V-16 Engine Runs Rough at Idle TS-31
Testing SCA Concentration Level CC-2602 Test Kit V-15 Engine Runs Rough or Misfires TS-32
Coolant Temperature Above Normal - Gradual Overheat TS-12 Engine Shutdown 1-8
Coolant Temperature Above Normal - Sudden Overheat TS-14 General Information 1-8
Coolant Temperature Below Normal TS-16 Engine Shuts Off Unexpectedly or Dies During Deceleration TS-33
Cooling Fan Belt Tensioner 5-3 Engine Speed Surges at Low or High Idle TS-34
Index
Page X-2
Engine Speed Surges Under Load or in Operating Range TS-35 General Cleaning Instructions i-10
Engine Starts But Will Not Keep Running TS-36 Abrasive Pads and Abrasive Paper i-10
Engine Steam Cleaning 6-2 Definition of Clean j-10
Clean . 6-2 Fuel System •' j-13
Engine Storage - Long Term 308-1 Gasket Surfaces Ml
General Information 308-1 Plastic Bead Cleaning. i-12
Engine Vibration Excessive TS-37 Solvent and Acid Cleaning
Engine Will Not Crank or Cranks Slowly TS-38 Steam Cleaning v i-12
Engine Will Not Shut Off TS-39 General Engine V-1
Engine Wiring Harness 5-9 Specifications V-1
Maintenance Check 5-9 General Repair Instructions j-8
Exhaust System V-7 General Information i-8
Specifications V-7 Welding on a Vehicle with an Electronic Controlled Fuel System i-9
Industrial and Generator Drive V-7 General Safety Instructions i-6
Fan Hub, Belt Driven 7-1 Important Safety Notice i-6
Maintenance Check 7-1 How to Use the Manual i-3
Fan Hub, Belt Driven .' A-10 General Information i-3
Clean and Inspect for Reuse A-12 Illustrations i-5
With EGR A-12 General Information i-5
Without EGR A-12 Intake Manifold Air Temperature Above Specification TS-44
Finishing Steps A-15 Lubricating Oil and Filters 4-1
With EGR A-15 Drain 4-1
Install A-13 Fill 4-2
With EGR A-13 Install 4-2
Automotive Applications Without EGR A-13 Remove 4-1
Industrial and Power Generation Application Without EGR A-14 Lubricating Oil Consumption Excessive TS-45
Preparatory Steps A-10 Lubricating Oil Contaminated TS-47
With EGR ...A-10 Lubricating Oil Level 3-3
Remove A-10 Maintenance Check 3-3
With EGR A-10 Lubricating Oil Pressure High TS-48
Automotive Applications Without EGR A-11 Lubricating Oil Pressure Low TS-49
Industrial and Power Generation Application Without EGR A-11 Lubricating Oil Recommendations and Specifications V-12
Fan, Cooling 3-4 AfterMarket Oil Additive Usage V-12
Inspect for Reuse 3-4 New Engine Break-in Oils V-12
Flow Diagram, Air Intake System D-13 Lubricating Oil Sludge in the Crankcase Excessive TS-50
Flow Diagram D-13 Lubricating Oil System V-3
Automotive, Industrial with CM570 and Power Generation without CM570.... Specifications V-3
D-13 Lubricating Oil Temperature Above Specification TS-51
With CM870 D-14 Lubricating or Transmission Oil in the Coolant TS-52
Flow Diagram, Compressed Air System D-22 Maintenance Guidelines - Overview 2-1
Flow Diagram D-22 General Information 2-1
Flow Diagram, Cooling System D-10 Maintenance Procedures - Overview 4-1
Flow Diagram D-10 General Information 4-1
Flow Diagram, Exhaust System D-15 Maintenance Procedures - Overview 5-1
Flow Diagram D-15 General Information 5-1
Automotive, Industrial with CM570 and Power Generation without CM570.... Maintenance Procedures - Overview 6-1
D-15 General Information 6-1
With CM870 D-17 Maintenance Procedures - Overview 7-1
Automotive With CM871 D-19 General Information 7-1
Automotive With CM871 D-20 Maintenance Record Form 2-8
Automotive With CM871 D-21 Maintenance Data 2-8
Flow Diagram, Fuel System D-2 Maintenance Schedule 2-3
Flow Diagram D-2 General Information 2-3
Industrial CM570 and Power Generation without CM570 D-2 Oil Drain Intervals '• 2-4
Flow Diagram, Lubricating Oil System D-4 Normal Starting Procedure 1-3
Flow Diagram D-4 General Information • 1-3
With CM870 D-6 Jump Starting 1-5
Automotive With CM871 D-9 Operating Fuel Pressure is Low TS-53
Fuel Consumption Excessive TS-40 Operating Instructions - Overview 1-1
Fuel Filter (Spin-On Type) 4-3 General Information 1-1
Clean and Inspect for Reuse 4-6 Operating the Engine 1-5
With Pressurized Fuel Filtering '. 4-6 Ambient Temperature 1-6
With Vacuum Fuel Filtering 4-6 Cold Weather 1-6
Initial Check 4-3 Normal 1-5
With Pressurized Fuel Filtering 4-3 Winterfronts and Shutters 1-7
With Vacuum Fuel Filtering ..4-4 Overhead Set 6-4
Install 4-6 Adjust 6-8
With Pressurized Fuel Filtering 4-6 Measure 6-4
With Priming Pump , 4-7 General Information 6-4
Without Priming Pump 4-8 Problem Solving S-1
Remove 4-5 General Information S-1
With Pressurized Fuel Filtering 4-5 Radiator Hoses 6-2
With Vacuum Fuel Filtering 4-6 Maintenance Check 6-2
Fuel in Coolant TS-42 Regional Offices - International S-30
Fuel in the Lubricating Oil TS-43 Locations S-30
Fuel Recommendations and Specifications V-10 Routine Service and Parts S-1
Fuel Recommendations V-10 General Information S-1
Fuel Shutoff Valve A-7 Service Literature Ordering Location L-2
Inspect for Reuse A-7 Contact Information L-2
Install : A-8 Smoke, Black — Excessive TS-54
Remove A-7 Smoke, White — Excessive TS-55
Fuel System V-2 Starting Procedure After Extended Shutdown or Oil Change 1-3
Specifications V-2 General Information 1-3
Fuel-Water Separator 3-2 Supplemental Coolant Additive (SCA) and Antifreeze Concentration 4-3
Drain 3-2 Maintenance Check 4-3
Canister Type 3-2 Symbols |-4
Spin-on Type 3-2 General Information i-4
 Index
Page X-3

System Diagrams - Overview D-1

General Information D-1
To the Owner and Operator j-1
General Information i-1
Tool Requirements 2-2
General Information 2-2
Automotive Applications 2-2
Troubleshooting Procedures and Techniques TS-1
General Information TS-1
Troubleshooting Symptoms Charts TS-2
General Information TS-2
Turbocharger A-2
Finishing Steps A-6
Install A-3
Preparatory Steps A-2
Remove A-2
Turbocharger Boost Pressure Low TS-56
Turbocharger Leaks Engine Oil or Fuel TS-57
Vibration Damper, Viscous 6-3
Inspect 6-3
 CALIFORNIA
Proposition 65 Warning
Diesel engine exhaust and some of its constituents are known
to the State of California to cause cancer, birth defects, and
other reproductive harm.
Cummins Inc.
Box 3005
Cummins Customer Assistance Center
Columbus. Indiana, U.S.A.. 47202 1-800-DIESELS (1-800-343-7357)
Registered Office
APPLICABLE ONLY IN U.S.A. AND CANADA
Cummins Lta.
49 - 51 Gresham Road.
Staines.
Middlesex TW18 2BD.
England
Registration 573951 England

Copyright 2010
Cummins Inc.

Bulletin 3666423
Printed in U.S.A. 13-DECEMBER-2010