JE493ZDB DIESEL ENGINE PARTS CATALOGUE

MANUAL
BOOK
Authorized Exclusive Agent Of Jiangxi Isuzu JE493G Series
PT. GLOBALINDO DIESEL INDONESIA

SOLUTION FOR YOUR POWER SYSTEM

 Important note

1. Please read this manual carefully to help you operate our diesel engine properly.
2. In order to protect the legitimate interests of users, please contact jiangxi isuzu engine co., ltd.
or the nearest maintenance service agent in time if you have any questions.
3. Please use special diesel fuel with the fuel surface between the grease marks.
4. Use long-acting (rust-resistant) coolant to prevent frost cracking and cylinder pull.
5. Users should replace the air filter, engine filter and diesel filter in time according to the
environmental conditions.
6. Do not let water enter the air filter so as not to damage the diesel engine.
7. For models not included in this specification, see this manual.

Authorized Exclusive Agent Of Jiangxi Isuzu JE493G Series

PT. Globalindo Diesel Indonesia
 Table Of Contents

Important Note ...............................................................................................................................i

Contant ..........................................................................................................................................ii
Chapter 1 Technical Characteristic ............................................................................................ 3
1. Main Data and Technical Parameter .................................................................................... 3
2. Main Technical Data .......................................................................................................... 4
Chapter 2 Start, Run & Stop Of Diesel Engine.......................................................................... 5
1. lnitial preparation .................................................................................................................... 5
2. lgnition steps .......................................................................................................................... 5
3. Monitor engine operation ..................................................................................................... 5
4. Stall ...................................................................................................................................... 5
Chapter 3 Regular Inspection and Technical Maintenance ..................................................... 6
1. Fuel System .......................................................................................................................... 6
2. Lubricating System .............................................................................................................. 7
3. Cooling system..................................................................................................................... 7
4. Air Intake System ................................................................................................................ 8
5. Battery .................................................................................................................................. 8
6. Usage and Technical Maintenance in Winter ...................................................................... 8
7. Regular Technical Maintenance .......................................................................................... 8
Chapter 4 Common Fault Analysis and Elimination Approaches For Diesel Engine ......... 10
1. Difficult Startup .................................................................................................................. 10
2. Unstable Minimum No– – load Steady Speed (ldle Speed) ............................................ 10
3. Diesel engine speed is not stable ........................................................................................ 11
4. Underpower of Diesel Engine ........................................................................................... 11
5. Abnormal Smoke Exhaust ................................................................................................. 11
6. Overheated Diesel Engine................................................................................................... 12
7. Abnormal Sound during Operation of Diesel Engine........................................................ 12
8. Excessive Lubricating Oil Consumption ............................................................................. 12
9. Malfunctioned Lubricating System ..................................................................................... 13
10. Malfunctioned Lubricating System ................................................................................. 13
11. Malfunctioned Cooling System ....................................................................................... 14
12. Malfunctioned Starter ...................................................................................................... 14
13. Malfunctioned Charging Dynamo ................................................................................... 14

Authorized Exclusive Agent Of Jiangxi Isuzu JE493G Series

PT. Globalindo Diesel Indonesia
 Chapter 1 Technical Characteristic

1. Main Data and Technical Parameter

JE49SDB−O2 JE49SDB−O1 JE49SZDB−O4 JE49SZDB−OS JE49SZLDB−O2 JE49SZLDB−O1

model
JE49SDBE−O2 JE49SDBE−O1 JE49SZDBE−O4 JE49SZDBE−OS JE49SZLDBE−O2 JE49SZLDBE−O1

Typ Water cooling,in line,four−stroke,wet liner and direct injection machinery or electroni

Number of 4
cylinders
Bore×Stroke 93×1O2
( mm)
Aspiration naturally turbo intercooling turbo

Displancem 2.771
ent (L)
Compressio 18.2:1
n ratio
Fring order 1−3−4−2

Rated output (kW) 24 28 28 S4 S8 46

Maximum power (kW) 27 31 31 38 42 51

Rated speed (r/min) 15OO 18OO 15OO 18OO 15OO 18OO

Idling speed 85O
(r/min)

(g/kW.h) ≤23O ≤22O ≤21O

Oil consumption
rate
Overall dimension 856×6O1×81O 86O×61O×81O 86O×6
(mm) 1O×8S
O
Net mass (kg) 23O 24O 245

Steady speed adjusting rario at machinery≤5% electronic≤1%

ratedcondition
Lubricating method Pressure lubrication and splash

3tarting method Electric motor start

Clockwise
Crankshaft rotating
(from the front view of diesel engine)
direction
Oil sump capacity 5.6
(L)
Oil ≥API CF−4

Oil pressure O.1−O.5O

(MPa)
Noise ≤9SdB(A)

Rated output F3N <S.O

Echaust <5OO
temperature (ª)
Oil temperature <11O
( ª)
Coolingwater 85±1O
temperature(ª)
Generator 14V/5OA

Starting motor 12V/2.8kW

Note: The parameters listed in this book are values in standard environment (atmospheric pressure: 1OOKpa, inlet temperature:
298K, dry airpressure: 99Kpa, partial pressure of water vapor: 1Kpa, relative humidity: 3O%).

Authorized Exclusive Agent Of Jiangxi Isuzu JE493G Series

PT. Globalindo Diesel Indonesia
2. Main Technical Data

a. Valve Clearance

Intahe Valve 0.4mm

Exkaust Valve 0.4mm

b. Tightening Torque of Main Bolts

Location and Thread specification Screw Torque
name (Nm)
Cylinder Head M11×1.5 1OO±5
Bolt
Main Bearing M14×1. 5 17O±1O
Lid Bolt
Connecting Rod M11×1.25 85±5
Nut
Flywheel Bolt M13×1.25 118±1O

Curve 3haft M16×1.5 21O±15

3trap Wheel
Bolt
Camshaft gear M12×1.5 11O±1O
fastening bolt
Location and Thread specification Screw Torque (Nm)
name
B shaft fastening M12×1.5 11O±1O
bolt for idling
gear
Gear fastening nut M12×1.5 65±5
for fuel pump
Fuel Injector M1O×1.5 4O±5
Panel Bolt
Union bolt M14×1. 5 25±5

Union bolt M12×1.25 2O±5

Union bolt M1O×1.25 15±S

c. Tightening Torque of General Bolts and Nuts (ForReference)

Bolts and Nuts Tightening Torque (Nm)

M6 1O±1
M8 2O±5
M1O×1.25 4O±1O
M12×1.25 8O±15
M14×1.5 12O±25

d. Recommended Value of Tightening Torque of Screw Plug

Thread Size NPT1/8 NPT1/4 NPT1/2 NPTS/8 NPTS/4 NPT1

TighteningTorque N.m 12±2 28±5 55±1O 8O±1O 9O±1O

Authorized Exclusive Agent Of Jiangxi Isuzu JE493G Series

PT. Globalindo Diesel Indonesia
 Chapter 2 Start, Run & Stop Of Diesel Engine

Using the diesel engine accurately, not only can it keep working rightly, but also prolong the
longevity of engine.

1. lnitial preparation
Please check the following items before starting the diesel engine:

a. When starting the diesel engine for the first time, please check the fasteners, accessories
and control devices. Only when everything is in good condition can the diesel engine be
started.
b. Check the water level and whether the drain switch is off. Check fan belt tightness.
c. Check whether the fuel is properly filled and ensure that all fuel pipes and fuel systems are
connected properly.
d. Check lubricating oil. Whether filling and filling volume is appropriate.Unused engines
need to be lubricated.
e. Check the battery. Whether the battery electrolyte is appropriate and sufficient power.

2. lgnition steps
a. Put the gear into neutral.
b. he new diesel engine needs to remove air from the fuel system by loosening the eThaust
valve of the high−pressure fuel pipe.
c. Release the clutch and start without load.
d. When starting the engine, the continuous running time of the starter should not exceed 5
seconds.
e. If the engine fails to start on three attempts (the interval between the two attempts must be
more than 20 seconds), try again after finding and resolving the problem.

3. Monitor engine operation

When the engine is working, please check the following items frequently:

a. Whether abnormal sound is found.

b. Unusual smell.
c. Whether the fuel system, cooling system and lubricating oil system leak.
d. Check whether the instrument reading is normal.

4. Stall
When the user is ready to turn off the engine, first slow down the high speed to low speed and
run at low speed for 2−3 minutes. Then stop the engine. This will allow the engine to cool down
and prevent parts from deforming. Users should release water after parking during freezing
season. Operation mode: open the drain screw.

Authorized Exclusive Agent Of Jiangxi Isuzu JE493G Series

PT. Globalindo Diesel Indonesia
 Chapter 3 Regular Inspection and Technical Maintenance

If you want to keep the diesel engine in good technical condition and work for you reliably for
a long time, please carry out regular inspection and technical maintenance according to the
technical specifications.

1. Fuel System

Fuel pump and injectors are precision components. Water or impurities in the fuel can strain
the plunger or injector, dirty or clogged the filter, and dirty fuel can reduce the service life of
the pump and injector. Please conduct regular inspection according to the following conditions.

a. Drainage of Fuel Tank

Regularly drain the fuel tank.
- Place a vessel under drain plug of uel tank.
- Screw of the drain plug 4 or 5 turns to drain the water inside. In order to avoid the
plug from dropping, do not screw it off extremely.
- After drainage, screw up the plug and check it for leakage.
- Carry out exhaust for fuel system.
b. Replacement of Diesel Filter
- Replacement Cycle

Fuel filter replacement cycle: every 6 months or 2OO hours of accumulative work under the
condition of ensuring fuel cleanness. If fuel impurities and water content is high, shorten the
cycle.

Replacement Procedure

- Screw off the diesel filter with proper tool.

- Clean the joint surface of the filter drum seat, apply a small amount of diesel oil to
the rubber seal ring of the filter drum, and fill the new filter drum with diesel oil from
the outer ring.
- Screw in the filter until there is slight resistance, then turn it in more than 2/3 of the
way.
- Exhaust the gas in fuel pipes
- Start up engine and check for the leakage.

Carry out exhaust for fuel system

Air entering the fuel system can cause engine starting difficulties and other engine failures.
During use or maintenance, if the fuel tank is emptied, the fuel system must be exhausted
after the fuel is refilled.
6

Authorized Exclusive Agent Of Jiangxi Isuzu JE493G Series

PT. Globalindo Diesel Indonesia
 Procedure of Exhaust in Fuel System:

- Loosen the bleed screw

- Press the fuel transfer pump up and down with force till no bubbles could be seen in
the fuel exhausted from the bleed screw .
- Tighten the bleed screw
- Press the transfer pump up and down with force till the resistance is felt to increase
suddenly.
- If the engine is not operated stably after startup, the accelerator handle could bepulled
two or three times.

Notice:

- The piston type oil pump is installed on the front side of the fuel injection pump and
driven by eccentric wheel on the camshaft of the fuel injection pump.
- Fuel pump and governor are the heart of diesel engine, the performance of diesel engine
depends on the performance of fuel pump and governor to a large extent, fuel pump and
governor have been adjusted before the factory, and has been sealed, do not remove, if
maintenance and adjustment, must be carried out by professionals in the fuel pump test
bench.

2. Lubricating System

Failure to maintain the engine lubrication system will greatly affect the service life of the
engine. Please replace the oil and oil filter according to the specified maintenance cycle.

It should be replaced according to the following steps to synchronous change lubricating oil
and oil filter.

The warning light for oil pressure is on during operation of the engine indicating filter clogged.
Replace it immediately regardless of the specified maintenance cycle.

Replacement Cycle

- Oil filter: 3 months or the accumulative work 100 hours Oil filling capacity:
- Oil staff gauge’s upper reticule (when change oil filter core)
- Oil staff gauge’s middle reticule (when not change oil filter core)

3. Cooling system

a) Check for drive belt

- Check for cracks, fluff, abrasion or oil and water adhesion. Replace the belt if necessary.
The belt shall not touch the bottom of the belt groove.

Authorized Exclusive Agent Of Jiangxi Isuzu JE493G Series

PT. Globalindo Diesel Indonesia
 - Press the belt to check the belt offset. Adjust the tension of the fan belt when the offset
of the fan belt exceeds the specified value or when the fan belt is replaced. Refer to the
table below.

Pressure applied Deviation of

belt
Fan belt 100N 8-10 mm

b) Engine cooling fluid Check coolant level height

After the engine cools, check the level of coolant in the radiator. If the coolant position has
been lowered, add coolant to the radiator cover opening.

Notice: If the cooling system requires frequent supplement of coolant fluid, please make a
check in maintenance service center.

4. Air Intake System

The working condition of the intake system greatly affects the service life and performance
of the engine.
Dirty air filter elements can cause insufficient intake of air into the engine, resulting in
engine power loss and ultimately engine failure, shortening the service life of the engine.
Get rid of the dust on the element of air filter!

5. Battery
- The surface of battery shall be kept clean and dry. Any corrosive liquid shall be
washed away with alkaline water.
- The joint of battery shall be ensured clean and firm.

6. Usage and Technical Maintenance in Winter

When the temperature is lower than 5ºC in winter, the diesel engine may freeze due to the
low temperature of the engine body and the high oil viscosity, which leads to the difficulty
of engine starting. Therefore, it is better to carry out a comprehensive technical
maintenance
before entering winter, and the following points should be paid attention to in use: 1¸Please
use 0#, −10−40 # diesel in winter.
2¸ Users should release water after parking in freezing season. Operation mode: open the
drain screw.

7. Regular Technical Maintenance

Regular Maintenance Periodic Table
A: Regulation; R:Replacement or EXchange; T: Tight screw according to stipulated
moment; L:Lubrication; I: Checking and repair or replacement if necessary.

Authorized Exclusive Agent Of Jiangxi Isuzu JE493G Series

PT. Globalindo Diesel Indonesia
 (!1OO ½" )/Period: Number of cycles: (!1OO hours) — 1 2 S 4 5 6 7 8 9 1O 11 1
2
Diesel Engine Oil A R — R — R — R — R — R —
Oil filter element I — — — R — — — R — — — R
Air filter element I I I R I I R I I R I I R
Fuel filter I — R — R — R — R — R — R
Idling speed I I I I I I I I I I I I I
Fuel oil ’s leak I I I I I I I I I I I I I
Fule leak I I I I I I I I I I I I I
Valve gap A — — — — — — — — — — — A
Fuel injection pump function — — — — — — — — — — — — I
Fuel tank — — — — — — I — — — — — I
Oil−Water 3eparator — I I I I I I I I I I I I
Spout pressure and spray state — — — — — — I — — — — — I
Spout ahead angle — — — — — — I — — — — — I
Compressing pressure — — — — — — — — — — — — I

Period: Number of cycles: (!1OO hours) — 1 2 S 4 5 6 7 8 9 1O 11 12

Cooling system ’s water leak I I I I I I I I I I I I I

Fan strap ’s tightness or loose and damage I I I I I I I I I I I I I

Diesel engine controlling construct — L L L L L L L L L L L L

Damage on exhaust pipe and other accessories and loose. — — — I — — I — — I — — I

Authorized Exclusive Agent Of Jiangxi Isuzu JE493G Series

PT. Globalindo Diesel Indonesia
Chapter 4 Common Fault Analysis and Elimination Approaches For Diesel
Engine
1. Difficult Startup

Fault Reason Correction means

a) Fuel brand is selected improperly. a) Select proper fuel brand.
b) Fuel tank is free of oil or it is switched off. b) Add fuel to the tank or switch it on.
c) There is air in fuel line and fuel pump. c) Remove air from fuel system and tighten tubing
connections "Change the fuel.
d) Water is mixed in fuel, or fuel d) Remove the fuel pipe and filter for cleaning or
passage orfilter is clogged. replace thefilter element.
1. Fuel system e) The oil delivery pump and fuel injection pump do e) Check and repair the pump
notsupply oil or the oil supply advance Angle is or injectionpump, adjust the
wrong. f)The injector does not spray oil, little oil advance angle.
injection, lowinjection pressure, poor atomization, f) Clean and grind fuel injector coupling
damage to the pressure regulating spring of the parts, adjust fuelinjection pressure or replace
injector, blocked or locked the injection hole. fuel injector assembly.

a) Valve clearance is too small. a) Adjust the valve clearance.

b) Air leaks from valve. b) In case of reduced elasticity of the valve spring, replace
the spring;in case of bad sealing performance of the taper
2. Cylinder surface,polish the valve.
pressure is c) Air leaks from junction of cylinder head and gasket. c) Replace the head gasket.
d) Piston ring wear, cementing, opening position overlap. d) Remove the coking; replace the piston ring. adjust
insufficient.
the openingposition of the piston ring.
e) Abrasions of cylinder liner and piston exceed the e) Replace the cylinder liner and the piston.
specifiedlimits.
3. Too low large viscosity and is difficult to be atomized due even clogs Heat the cooling water and use proper diesel.
temperature fuel pipe.

a) Battery level is low or the configuration is too small. a) Charge or provide with battery conforming to the
4.Check electric b)Connections of electric appliance system have poor requirement;
appliance system contact. b) Tighten the connections of the electric appliance system;
c) Gear of starter can not be engaged to ring gear of flywheel.
c) Find out the reasons and solve;

2. Unstable Minimum No– – load Steady Speed (ldle Speed)

Fault & Reason Correction means

1.The handle is bent or has loose connection. Tighten or replace the handle.

2.Air is entrained in oil passage. Exhaust the air.

S.High−speed and idlespeed accelerator handle have wrong positions. Adjust the positions of the accelerator handles.

4.Valve clearance is too large. Adjust the valve clearance.

5. Oil pump does not work properly. Replace the pump.

10

Authorized Exclusive Agent Of Jiangxi Isuzu JE493G Series

PT. Globalindo Diesel Indonesia
3. Diesel engine speed is not stable

Fault Reason Correction means

a) Air e5ists in supply system. a) E5haust the air in the fuel system and tighten the
connections ofthe fuel pipe;
1. Fuel pipe
b) E5cessive water b) Replace the fuel;
content is included in c) Tighten the connections of the fuel pipe or replace the pipe.
fuel.c)Fuel pipe leaks.

Fault
Reason Correction means

2. Speed governor
worksimprop– erly.
Adjust and calibrate the speed governor.

3.
Check the bolts and the gasket of the cylinder head. Tighten
the bolts or replace the gasket.

a) Injection pump has different oil a) Adjust the oil supply from the cylinders to injection pump;
4.Cylinders supply oil supplies from the cylinders;
differently.
b) Injector performs badly or the matching b) Check the situation of injection, clean or replace the
parts are seized. matching parts;
c) Replace the spring.
c) Piston spring for injection pump is
broken.

4. Underpower of Diesel Engine

Fault & Reason Correction means

1. Element of air filter is clogged. Clean the element or replace it if necessary.
2.Intercooler is too dirty. Clean away the oil stain inside the cooler as well as impurities and dust outside.

S.Exhaust manifold or main pipe is clogged. Remove the foreign matters in the pipe.

4.Air exists in fuel pipeline. Exhaust the air and tighten the connections of the pipe.

5.Oilreserve in the tank is insufficient and the oilused is of poor Fill up fuel to the tank; select the fuel in accordance with the requirement.
quality.
6.Injection pump piston or delivery valve seat thereof
malfunctioned; or Tighten or adjust.
the connecting nut of high−pressure oil pipe is loose.
7. Advance angle of fuel supply is improper. Adjust the angle.
Fault & Reason Correction means
8.Injector has bad atomization. Adjust the injection pressure.
9.Valve clearance is improper. Adjust the clearance.

1O.Injection pump works improperly. Adjust or replace the pump.

11. Air exists in fuel pipeline. Exhaust the air and tighten the connections of the pipe.

5. Abnormal Smoke Exhaust

Fault Reason Correction means

1. White a) Water penetration exists in cylinder. a) Check and eliminate the fault.
smoke rises. b) Water is included in fuel. b) Replace the fuel.

a) Oil flees; piston ring is on backward, seized a) Adjust or replace piston ring.
2. Blue smokerises. or worn toomuch.
b) Clearance between valve stem and valve b) Replace the valve.
guide is toolarge.
c) Oil seal for valve stem is damaged. c) Replace the oil seal.

11

Authorized Exclusive Agent Of Jiangxi Isuzu JE493G Series

PT. Globalindo Diesel Indonesia
 a) Diesel engine is under overload. a) Reduce the load.
b) Fuel supply is delayed too much. b) Adjust the advance angle of fuel supply.
c) Fuel supply is excessive. c) Adjust injection pump and speed governor.
S. Black smokerises. d) Air filter and exhaust pipe is clogged. d) Get rid of the dust in the air filter and
exhaustpipe; or replace element of the
e) Valve clearance is improper; valve is sealed filter.
incompletely. e) Adjust the valve clearance; in case of bad sealing
performance ofthe taper surface,polish the valve
f) Timing for fuel injection is improper. f) Adjust the gear of the injection pump to align the mark.

6. Overheated Diesel Engine

Fault & Reason Correction means

1. Cooling water in the tank is insufficient or Fill up or replace the cooling water in the tank.
contaminated. Water pump works improperly.

2. Cooling system is impeded. Get rid of the scale, foreign matters in the pipes for free flowing.

S. Water pump belt is loose. Adjust the tensity of the belt.

4. The pump is not working properly. Repair or replace the water pump.

5. The thermostat failed. Repair or replace thermostat.

6. Lubricating oil is of poor quality. Replace the lubricating oil.

7. The diesel engine is overloaded. Reduce the load.

7. Abnormal Sound during Operation of Diesel Engine

Fault & Reason Correction means

1. Fuel injection is too early; there is rhythmed and clear metallic Adjust the advance angle of fuel supply.
rappingin cylinder.

2. Fuel injection is delayed too much; there is dull and indistinct Adjust the advance angle of fuel supply.
soundin cylinder.

S. Clearance between piston and cylinder is too large so that there is Replace piston or liner.
clash in the cylinder after startup of diesel engine. The sound will be
diminished with warming up of the engine.

Fault & Reason Correction means

5. The main bearing and connecting rod bearing clearance is too large, Replacement parts, ensure the specified clearance.
when the speed of the diesel engine suddenly decreases, you can hear
the crash sound, low speed sound heavy and powerful.
6. AAial clearance of crankshaft is too large so that clash of the
crankshaft’s moving forwardand backward can be heard in case of Replace the crankshaft thrust plate to guarantee the specified
idle speed. clearance.

7. Valve spring is broken; push rod is bent; valveclearance is too large;

splutter or soft and rhythmed knock can be heard at cylinder head Replace the parts, adjust the valve clearance.
cover.

8. Gear clearance is too large due to wearing so that clash can be heard
at gear boA when speed is decreased suddenly. Replace the gear as appropriate.

8. Excessive Lubricating Oil Consumption

Fault & Reason Correction means

1. Lubricating oil is too much or splashed eAcessively. Drain some oil.

2.The oil is of poor quality Replace the oil.

S. Piston ring is worn or clamped. Replace the piston ring.

12

Authorized Exclusive Agent Of Jiangxi Isuzu JE493G Series

PT. Globalindo Diesel Indonesia
 4.Clearance between cylinder liner Clearance between cylinder liner
and pistonis too large. and pistonis too large.

5.Oil seal for valve stem is worn. Replace the oil seal.

9. Malfunctioned Lubricating System

Fault & Reason Correction means

1. Air filter is clogged. Clean or replace the filter element.
2.Intercooler is too dirty. (mainly for models with intercooler) Get rid of impurities and dust on outside surface of the intercooler.
S.High−speed stop screw is not sealed up. Seal up the high−speed stop screw.
4.Fuel pipeline leaks. Tighten fuel pipe joints, replace the pipe.
5.Exhaust pipe is clogged. Get rid of the dirt in the exhaust pipe.
6.Fuel is of poor quality. Use specified fuel.
7.Advance angle of fuel supply is improper. Adjust the advance angle.
Adjust the opening pressure of fuel
8.Injector spray is of poor quality.
injector,check and clean the nozzle or
replace it.
9.Valve clearance is improper. Adjust the valve clearance.
1O.Injection pump works improperly. Adjust or replace the injection pump.

10. Malfunctioned Lubricating System

Fault Reason Correction means

a) Oil pan is short of oil. a) Oil to the marking line on the dipstick.
1.Oil pressure b) Oil passage is clogged. b) Clean the oil passage and blow off by compressed air.
c) Oil filter is clogged. c) Clean the oil filter or replace the filter element.
is too low. d) Diesel engine is overheated so that the oil d) Reduce the load, replace the oil and lower the oil temperature.
temperature istoo high and the oil is thinned.
Fault Reason Correction means

2.The oil is of
poor quality.
Replace with the oil in conformity with the requirement.

S.Oil pump
screen is
clogged.
Clean the screen.

4. Oil pump gear

is worn or the
end clearance is
too large. Adjust or replace the gear.

5. Oil pipe is
broken or the
joint gets loose. Tighten the joint.

6. Oil pump
malfunctioned.
Repair or replace the oil pump.

13

Authorized Exclusive Agent Of Jiangxi Isuzu JE493G Series

PT. Globalindo Diesel Indonesia
 7. Connecting
rod bearing and
main bearing are
worn. Replace the connecting rod bearing and the main bearing.

8. Oil pressure
gauge is
damaged. Replace the pressure gauge.

11. Malfunctioned Cooling System

Fault Reason Correction means

a) Cooling water is insufficient. a) Fill up cooling water into the tank.

b) Spring of radiator cap is soft. b) Replace the spring.
c) Belt of water pump is loose or damaged. c) Tighten or replace the belt.
1. Water d) Temperature saver malfunctioned. d) Replace the temperature saver.
e) Water pump works improperly. e) Repair or replace the water pump.
temperature
f) Scale deposit in cooling water passage is too f) Clean the cooling water passage to get rid of the scale.
is toohigh. much. g) Clean the pipeline of radiator for clearing.
g) Radiator is clogged. h) Repair or replace the radiator.
h) Water leaks from radiator. i) Replace the gasket or packing plate.
i) Water leaks from water pump. j) Tighten or replace the connecting tube.
j) Connecting tube of radiator is loose or broken.

2. Water a) Temperature saver malfunctioned. a) Replace the temperature saver.

temperature b) Temperature saver is improper. b) Use as specified.
is toolow. c) Ambient temperature is too low. c) Set shelter from wind for protection.

12. Malfunctioned Starter

Fault Reason Correction means

1. Starter does not a) Connection has poor contact. a) Clean and tighten the contact.
work. b) Battery is undercharged. b) Charge up the battery.

2. Starter has weak

no−load run for Replace
startup.

13. Malfunctioned Charging Dynamo

Fault & Reason Correction means

Not charged completely; undercharged; unstable charging current Replace

Appendi::Quick−wear parts detailed list

1 Cylinder head gasket 2 Cylinder liner 3 Sealing hydrosphere 4 Principal a:is tile
5 Connecting rod bearingbush 6 Crankshaft thrust piece 7 Piston 8 Piston ring 9 Piston pin
1O Connecting rod assembly 11 Before the oil seal 12 After the oil seal

14

Authorized Exclusive Agent Of Jiangxi Isuzu JE493G Series

PT. Globalindo Diesel Indonesia