Important information

Serious risk of injury

When working on the engine, e.g. when adjusting the drive belts and clutch, or when changing oil, it is im-
portant not to start the engine. The engine could be damaged, but more importantly there is a serious risk of
injury.
Secure the starting device or disconnect a battery cable before working on the engine. This is especially im-
portant if the engine has a remote starter or automatic starting.

WARNING!

This warning symbol and text can be found next to those maintenance items where it is particularly impor-
tant to bear in mind the risk of injury.

Operator's manual
DI13 PDE Marine engine
en-GB 3 034 591
Issue 13.0

404 101
Start of warranty . . . . . . . . . . . . . . . . . . . . . . . . 3 Cleanliness requirements . . . . . . . . . . . . . . . .62
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Checking the fuel level. . . . . . . . . . . . . . . . . .62
Certification . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Draining and renewing the single water separat-
Power classes . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 ing prefilter (option) . . . . . . . . . . . . . . . . . . . .63
Environment and safety . . . . . . . . . . . . . . . . . . 6 Draining the reversible water separating prefilter
Environmental liability . . . . . . . . . . . . . . . . . . 6 (option) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .64
Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Renewing the reversible water separating prefil-
Warnings and advisories . . . . . . . . . . . . . . . . . 7 ter (option) . . . . . . . . . . . . . . . . . . . . . . . . . . .66
Scania Engines engine warranty for marine en- Renewing the fuel filter . . . . . . . . . . . . . . . . .68
gines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 Renewing and venting commutative fuel filters
Emission control systems warranty. . . . . . . . 12 (option) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .69
Emission control system warranty statement 12 Venting the fuel system . . . . . . . . . . . . . . . . .70
Engine data plate . . . . . . . . . . . . . . . . . . . . . . . 16 Miscellaneous . . . . . . . . . . . . . . . . . . . . . . . . . .72
Component identification . . . . . . . . . . . . . . . . 17 Checking the drive belt . . . . . . . . . . . . . . . . .72
Engine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 Checking for leakage . . . . . . . . . . . . . . . . . . .73
SCR system . . . . . . . . . . . . . . . . . . . . . . . . . . 18 Checking and adjusting the valve clearance and
Starting and running . . . . . . . . . . . . . . . . . . . . 19 unit injectors. . . . . . . . . . . . . . . . . . . . . . . . . .74
Checks before first start . . . . . . . . . . . . . . . . 19 Renewing the reductant filters . . . . . . . . . . . .79
Checks before running . . . . . . . . . . . . . . . . . 21 Quality requirements for fuel . . . . . . . . . . . . .82
Starting the engine . . . . . . . . . . . . . . . . . . . . 21 Diesel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .82
Running . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 Biodiesel (FAME) . . . . . . . . . . . . . . . . . . . . .85
Engine shutdown. . . . . . . . . . . . . . . . . . . . . . 25 HVO . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .86
Checks after driving . . . . . . . . . . . . . . . . . . . 26 GTL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .86
Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . 27 Reductant with SCR . . . . . . . . . . . . . . . . . . . . .87
Maintenance interval. . . . . . . . . . . . . . . . . . . 28 32.5% by weight of urea . . . . . . . . . . . . . . . .88
Lubrication system . . . . . . . . . . . . . . . . . . . . . 29 40% by weight of urea . . . . . . . . . . . . . . . . . .88
Oil grade . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 Preparing the engine for storage . . . . . . . . . . .89
Oil analysis . . . . . . . . . . . . . . . . . . . . . . . . . . 31 Preservative products . . . . . . . . . . . . . . . . . . .89
Checking the oil level . . . . . . . . . . . . . . . . . . 32 Preparations for storage . . . . . . . . . . . . . . . . .90
Maximum angles of inclination during operation Technical data . . . . . . . . . . . . . . . . . . . . . . . . . .92
32 General data . . . . . . . . . . . . . . . . . . . . . . . . . .92
Changing the oil . . . . . . . . . . . . . . . . . . . . . . 33 Lubrication system . . . . . . . . . . . . . . . . . . . . .93
Cleaning the centrifugal oil cleaner . . . . . . . 34 Intake system . . . . . . . . . . . . . . . . . . . . . . . . .93
Operational testing of the centrifugal oil cleaner Cooling system. . . . . . . . . . . . . . . . . . . . . . . .93
38 Injection system . . . . . . . . . . . . . . . . . . . . . . .94
Renewing the oil filter. . . . . . . . . . . . . . . . . . 39 Electrical system . . . . . . . . . . . . . . . . . . . . . .94
Renewing the commutative oil filter. . . . . . . 39 Material content . . . . . . . . . . . . . . . . . . . . . . .94
Air cleaner . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40 Scania Assistance . . . . . . . . . . . . . . . . . . . . . . .95
Reading the vacuum indicator. . . . . . . . . . . . 40 Tightening torque for screw joint . . . . . . . . . .96
Renewing the air cleaner filter element and safe- Screws and nuts . . . . . . . . . . . . . . . . . . . . . . .96
ty cartridge . . . . . . . . . . . . . . . . . . . . . . . . . . 41 Hose clamps . . . . . . . . . . . . . . . . . . . . . . . . . .97
Renewing an air filter with a non-renewable ele-
ment. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
Cooling system . . . . . . . . . . . . . . . . . . . . . . . . . 42
Coolant . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
Checking the coolant level . . . . . . . . . . . . . . 47
Checking the coolant's antifreeze and corrosion
protection . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
Checking the sacrificial anodes. . . . . . . . . . . 49
Checking the sea water pump impeller . . . . . 50
Changing the coolant and cleaning the cooling
system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
Fuel system . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62

OPM 250 en-GB 2

© Scania CV AB 2022, Sweden
 Start of warranty

Start of warranty
The more we know about you, your company and your equipment, the more effectively we can adapt our
services to you. If you have started to use a new Scania engine, it is very important that you send in the war-
ranty start report to us immediately. Quite simply, we need to register all the details on engine ownership
etc., so we can monitor it for you.
You can report the start of the warranty on the Scania website: www.scania.com.

Note:
If you do not send in the warranty report, the engine is not covered by the accompanying Scania warranty.

Also fill in below the details you enter in the warranty report. These details can facilitate contact with a
workshop, for example. The engine serial number is on the engine data plate and is also engraved on the
cylinder block.

Engine serial number (e.g. 1111111)

Ship ID (for example MMSI 111111111 or IMO 1111111)

Start date (yyyy-mm-dd)

Company name

Contact person

Telephone number

E-mail address

Address

Postcode

Post town

State/County

Country

OPM 250 en-GB 3

© Scania CV AB 2022, Sweden
 Introduction

Introduction Certification
This Operator's manual describes the operation
and maintenance of Scania marine engines. IMPORTANT!

The engines are direct-injection, liquid-cooled, For Scania to guarantee that the engine corre-
four-stroke diesel engines with turbochargers. sponds to its certified configuration, and take re-
Certain engines are also equipped with an SCR sponsibility for any damage and injuries that
system for emission control. occur, maintenance must be carried out in ac-
The engines are available with different output cordance with the instructions in this Operator's
and engine speed settings. The engine power of manual.
the engine ordered is indicated on the engine data
plate. An emissions certified engine fulfils the emis-
Note: sions requirements for a particular range of ap-
plication.
Only standard components are described in the
operator's manual. Information about special On each emissions certified engine there is a la-
equipment is contained in instructions from the bel which shows which requirements the engine
various manufacturers. fulfils. Scania guarantees that each such engine
fulfils the emissions requirements for the range
of application for which it is certified.
To ensure the maximum performance and the
longest service life for the engine remember the The following are required for the certified en-
following: gine to fulfil the emissions requirements once it
has been taken into service:
• Read through the Operator's manual before
starting to use the engine. Even regular users • Maintenance is to be carried out in accord-
of Scania engines will get new information ance with the instructions in this Operator's
from the Operator's manual. manual.
• Always follow the maintenance instructions. • Maintenance and repairs of injection equip-
ment are to be carried out by an authorised
• Read the section on safety carefully. Scania workshop.
• Get to know your engine so that you know • The engine may only be modified with equip-
what it can do and how it works. ment that has been approved by Scania.
• Always contact an authorised Scania work- • Seals may be broken and setting data edited
shop for maintenance and repairs. only once approval has been granted by Sca-
nia. Modifications may be made by author-
The information in this Operator's manual was
ised personnel only.
correct at the time of going to press. Scania re-
serves the right to make alterations without prior • Modifications affecting the exhaust and in-
notice. take systems must be approved by Scania.

Note: Otherwise, the instructions in the Operator's

manual for the running and maintenance of the
Always use Scania spare parts for maintenance
engine shall apply. Follow the safety precautions
and repair.
on the following pages.

OPM 250 en-GB 4

© Scania CV AB 2022, Sweden
 Power classes

Power classes
Scania supplies engines in five different power classes:
ICFN, Continuous service: Intended for continuous use and an unlimited number of operational hours per
year at a total load factor of 100%.
IFN, Intermittent service: Intended for periodic use, where the rated power is available for 1 hour per 3-
hour period. The total load factor must not exceed 80% of the rated power. Unlimited number of operational
hours per year.
Patrol craft long: Intended for periodic use, where the rated power is available for one hour per six-hour
period. In between periods of operation at full load, the engine speed must be reduced by at least 10% of the
maximum engine speed attained. The total operating time must not exceed 2,000 hours per year.
Patrol craft short: Intended for periodic use, where the rated power is available for one hour per 12-hour
period. In between periods of operation at full load, the engine speed must be reduced by at least 10% of the
maximum engine speed attained. The total operating time must not exceed 1,200 hours per year.
PRP, Prime Power: Intended for continuous use and an unlimited number of operational hours with vary-
ing loads. For continuous operation and unlimited annual operating time with varying loads. Max. average
load factor of 70% of rated power during 24 hours of operation. 1 hour/12 hour period over 100% load. Max.
25 hours accumulated service time over 100% load per year. This power class applies to single-speed en-
gines.
The engine serial numbers and power classes for the engines that are used in this installation should be listed
below: You can find the power class of your engine in the engine type data sheet on the Scania website,
www.scania.com.

Engine serial num-

ber:

Engine type:

Engine power: kW at rpm

ICFN, Continuous service

IFN, Intermittent service

Patrol craft long

Patrol craft short

PRP, Prime power

OPM 250 en-GB 5

© Scania CV AB 2022, Sweden
 Environment and safety

Environment and safety Different types of advisory

Warning!
Environmental liability All advisories preceded by Warning! are very
Scania develops and produces engines that are as important. They warn of serious faults and incor-
environmentally-friendly as possible. Scania has rect operation that could lead to personal injury.
made major investments in the reduction of Example:
harmful exhaust emissions in order to fulfil the
environmental requirements in force in almost
every market. WARNING!

At the same time, we have been able to maintain Secure the starting device or disconnect a battery
a high level of performance and operating econ- cable before working on the engine. If the engine
omy for Scania engines. To maintain these starts unexpectedly, there is a serious risk of in-
throughout the entire service life of the engine, it jury.
is important for the user to follow the instruc-
tions on running, maintenance and fuel, lubricat-
ing oil and coolant as outlined in the Operator's Important!
manual.
Advisories preceded by Important! warn of
Other green initiatives taken include ensuring faults and incorrect operation that could lead to
that, following maintenance and repair, waste equipment being damaged. Example:
that is harmful to the environment (for example
oil, fuel, coolant, filters and batteries) is disposed
IMPORTANT!
of accordance with the applicable environmental
requirements.
An excessive coolant temperature can cause en-
gine damage.

Safety
The following pages contain a summary of the Note:
safety precautions to be complied with when op- Advisories preceded by Note: refer to informa-
erating and maintaining Scania engines. The tion important to ensure the best possible opera-
equivalent text can also be found under the rele- tion and functionality. Example:
vant maintenance item.
Note:
To prevent damage to the engine and to ensure
that it runs optimally, follow the instructions in Leave the engine off for at least 7 minutes before
the warnings and advisories. you check the oil level.

If the instructions are not followed, the warranty

can cease to apply.

OPM 250 en-GB 6

© Scania CV AB 2022, Sweden
 Environment and safety

Environment Fuel
This Operator’s manual contains specially high-
lighted text with instructions to help protect the WARNING!
environment during maintenance. Example:
The wrong fuel grade can cause breakdowns or
stoppages by causing the injection system to
Environment malfunction. This can cause damage to the en-
gine and, possibly, personal injury.
Use a suitable container. The fuel collected must
be disposed of as specified in national and inter-
national laws and regulations.
REQUIREMENT!

Use only fuel which fulfils the requirements in

Warnings and advisories the Quality requirements for fuelsection.

Smoking
Refuelling

WARNING!
WARNING!
Smoking is prohibited
During refuelling there is a risk of fire and explo-
• in the vicinity of flammable or explosive ma- sion. The engine must be switched off and smok-
terial, e.g. fuel, oils, batteries, chemicals ing is prohibited.
• when refuelling and in the vicinity of the fill- Never overfill the tank as the fuel needs space to
ing station expand. Make sure that the filler cap is fully
• when working on the fuel system closed.

Safety precautions for running the Hazardous gases

engine
Daily maintenance WARNING!
Always carry out a visual inspection of the en- Only start the engine in a well-ventilated area.
gine and engine compartment before starting the The exhaust gases contain carbon monoxide and
engine or when the engine has been switched off nitrogen oxides, which are toxic.
after operation.
When the engine is run in an enclosed space,
This inspection should be done to detect fuel, oil there must be an effective device to extract ex-
or coolant leaks, or anything else that may re- haust gases and crankcase gases.
quire corrective action.

OPM 250 en-GB 7

© Scania CV AB 2022, Sweden
 Environment and safety

Starter lock Safety precautions for handling ma-

terials
IMPORTANT!
Fuel and lubricating oil
If the instrument panel is not fitted with a starter
lock, the engine compartment should be locked WARNING!
to prevent unauthorised personnel from starting
the engine. Alternatively, a lockable master All fuels and lubricants as well as many chemi-
switch or battery master switch can be used. cals are flammable. Always follow the instruc-
tions on the relevant packaging.
The work must be carried out on a cold engine.
Starter gas Fuel leaks and spillages on hot surfaces can
cause fire.
WARNING!
Store used rags and other flammable materials
safely so as to avoid spontaneous combustion.
Never use starter gas or similar agents to help
start the engine. This can cause an explosion in
the intake manifold and possible injury.
Batteries

Running WARNING!

The batteries contain and form oxyhydrogen gas,

WARNING!
particularly during charging. Oxyhydrogen gas
is flammable and highly explosive.
The engine must not be run in environments
where there is a risk of explosion, as all of the There must be no smoking, naked flames or
electrical or mechanical components can gener- sparks near the batteries or the battery compart-
ate sparks. ment. Incorrect connection of a battery cable or
jump lead can cause a spark, which can cause the
Approaching a running engine always poses a
battery to explode.
safety risk. Parts of the body, clothes or dropped
tools can get caught in rotating parts such as the
fan and cause injury. For personal safety all ro-
tating parts and hot surfaces must be fitted with
guards.

OPM 250 en-GB 8

© Scania CV AB 2022, Sweden
 Environment and safety

Chemicals
REQUIREMENT!
WARNING!
Use only reductant which fulfils the require-
Most chemicals such as glycol, anti-corrosive ments in the Reductant with SCRsection.
agents, preservative oils and degreasing agents,
are hazardous to health. Some chemicals, such as
preservative oil, are also flammable. Always fol- Safety precautions for maintenance
low the safety precautions on the packaging.
Switch off the engine
Store chemicals and other materials which are
hazardous to health in approved and clearly
WARNING!
marked containers, where they are inaccessible
to unauthorised persons.
Working on a running engine always poses a
safety risk. Parts of the body, clothes or dropped
tools can get caught in rotating parts and cause
Environment injury.

Excess and used chemicals must be disposed of Always switch off the engine before carrying out
as specified in national and international laws maintenance, unless otherwise indicated.
and regulations.
Make it impossible to start the engine: Remove
any starter key, or cut the power using the main
Reductant power switch or battery master switch and lock
them.
Engines fitted with SCR systems use reductants
(AdBlue®, DEF, ARLA 32 or AUS 32/AUS 40) Fix a warning plate somewhere appropriate,
in the reductant tank. showing that work is being carried out on the en-
gine.
The reductant is not toxic, but it is still important
to observe the following when working on the re-
Hot surfaces and fluids
ductant circuit:
• If reductant comes in contact with the skin: WARNING!
Wash with soap and plenty of water.
• If reductant splashes in the eyes: Rinse imme- There is always a risk of sustaining burns when
diately using an eye bath and then seek med- an engine is hot. Particularly hot parts are branch
ical attention. pipes, turbochargers, oil sumps, and hot coolant
• Change out of clothes which have spills on. and oil in pipes and hoses.

OPM 250 en-GB 9

© Scania CV AB 2022, Sweden
 Environment and safety

Lubrication system Fuel system

WARNING! WARNING!

Hot oil can cause burns and skin irritation. Wear Maintenance and repairs of injection equipment
protective gloves and eye protection when are to be carried out by an authorised Scania
changing hot oil. workshop.
Make sure that there is no pressure in the lubri- Always use Scania spare parts for the fuel and
cation system before starting work on it. electrical systems. Scania spare parts are de-
signed to minimise the risk of fire and explosion.
Make sure that the oil filler cover is fitted when
starting and running in order to avoid oil escap-
ing.
Environment

Use a suitable container. The fuel collected must

Environment be disposed of as specified in national and inter-
national laws and regulations.
Used oil must be disposed of as specified in na-
tional and international laws and regulations.
SCR system
Cooling system
IMPORTANT!
WARNING! Cleanliness is very important when working on
the reductant circuit. Clean thoroughly around
Never open the coolant filler cap when the en- all parts to be dismantled to prevent dirt from en-
gine is hot. Hot coolant and steam may spray out tering the system.
and cause burns. If the cap has to be opened do it
slowly to release the pressure before removing When working on the SCR system, the reductant
the cap. Wear protective gloves as the coolant is connections may only be lubricated with aque-
still very hot. ous soft soap solution or with distilled water with
a 3% urea mixture. Any other types of lubricant
Avoid skin contact with coolant as this may may block and damage components in the SCR
cause irritation to the skin. Wear eye protection system.
and gloves when handling coolant.
Reductant causes certain metals to corrode. Al-
Ethylene glycol can be fatal if ingested. ways rinse away reductant spillage on connec-
tions and other parts with lukewarm water to
prevent corrosion. If reductant seeps into electri-
cal connections or electrical cables, these must
Environment
be renewed.
Used coolant must be disposed of as specified in
national and international laws and regulations.

OPM 250 en-GB 10

© Scania CV AB 2022, Sweden
 Environment and safety

Electrical system Batteries

WARNING! WARNING!

Switch off the engine and switch off the power The batteries contain highly corrosive sulphuric
by disconnecting the electrical cables to the bat- acid. Take care to protect your eyes, skin and
tery. External power supplies to extra equipment clothes when charging or handling batteries.
in the engine must also be disconnected. Wear protective gloves and eye protection.
Always use Scania spare parts for the fuel and If sulphuric acid comes in contact with the skin:
electrical systems. Scania spare parts are de- Wash with soap and plenty of water. If it gets in
signed to minimise the risk of fire and explosion. your eyes: Rinse immediately with plenty of wa-
ter and seek medical attention.

Electric welding
Environment
WARNING!
Used batteries must be disposed of as specified
When carrying out welding work on and near the in national and international laws and regula-
engine, disconnect the battery and alternator tions.
leads. Pull out the multi-pin connector for the en-
gine control unit as well.
Before starting
Connect the welding clamp close to the compo-
nent to be welded. The welding clamp must not WARNING!
be connected to the engine, or so that the current
can cross a bearing. Ensure that all guards are in place before starting
the engine. Ensure that no tools or other objects
When welding is finished: have been left on the engine.
1. Connect the alternator and engine control The air filter must be fitted before starting the en-
unit cables. gine. Otherwise there is a risk of objects being
2. Connect the batteries. sucked into the compressor impeller or of injury
if you come into contact with the air filter.

OPM 250 en-GB 11

© Scania CV AB 2022, Sweden
 Scania Engines engine warranty for marine engines

Scania Engines engine war- Emission control system war-

ranty for marine engines ranty statement
General warranty provisions
Emission control systems
warranty The emission control systems of your new Scan-
ia Engines (“Scania”) marine diesel engine were
designed, built and tested using genuine parts,
IMPORTANT! and were certified to be compliant with federal
emission control regulations. Scania guarantees
This section is only applicable to engines used in to the original owner, and to each subsequent
the USA, and to engines without an exhaust gas owner, of a new Scania marine diesel engine
aftertreatment system (SCR system). (“you”) that the emission control system of your
engine:
This section is not applicable to incorrectly in-
stalled or non-Scania low pressure fuel system 1. Was designed, built and equipped to be com-
components. pliant with all applicable regulations under
Section 213 of the Clean Air Act, 42 U.S.C.
§ 7547 at the time of sale, and
2. Is free from defects in material and work-
Table of Contents manship which would cause such an engine
General warranty provisions 12 to fail to comply with applicable regulations
Warranty period 12 for its warranty period.
Parts covered by the Warranty 13 Warranty period
General warranty limitations 13 This warranty shall apply for one of the follow-
Specific warranty exclusions 14 ing periods, whichever occurs first:
Customer support 14 • A period of operating hours equal to at least
50 percent of the engine's useful life in oper-
ating hours, or
• A period of years equal to at least 50 percent
of the engine's useful life in years;
• Although the warranty period shall apply for
a period that is not less than any mechanical
warranties provided by Scania to the owner.

The warranty period shall begin:

• On the date the marine vessel is delivered to
the first retail purchaser, or
• If the marine vessel is taken into service for
demonstration purposes prior to retail sale, on
the date the engine is first taken into service.

The emission-related warranty is valid for:

• 500 hours or 5 years for recreational engines,
whichever comes first.
• 5000 hours or 5 years for commercial en-
gines, whichever comes first.

OPM 250 en-GB 12

© Scania CV AB 2022, Sweden
 Scania Engines engine warranty for marine engines

Parts covered by the Warranty General warranty limitations

The following is a list of parts considered a part To retain the dependability of the exhaust emis-
of the Emission Control Systems and is covered sion control originally built into your Scania ma-
by the Emission Warranty for engines which rine diesel engine, it is essential that the engine is
were built to comply with applicable U.S. Envi- installed according to Scania installation instruc-
ronmental Protection Agency regulations: tions and emission certificates.
1. Fuel system In addition, You are responsible for the perfor-
2. Air induction system mance of all scheduled maintenance or repairs
on your new Scania marine diesel engine. Scania
a) Intake manifold may deny a warranty claim if your failure to per-
b) Turbocharger system form maintenance resulted in the failure of the
c) Charge air cooler system warranted part.
3. Exhaust manifold
Receipts covering the performance of regular
4. Combustion chamber maintenance should be retained in the event
a) Piston questions arise concerning maintenance. The re-
b) Cylinder head ceipts should be transferred to each subsequent
5. Crankcase ventilation owner of the marine vessel with the emission
warranted engine.
6. Sensors
a) Engine speed sensors The Warranty covers the cost of repair and re-
b) Oil pressure sensor placement parts and services of warranted com-
c) Coolant temperature sensor ponents and systems performed by an authorized
d) Coolant level sensor Scania distributor or dealer using genuine Scania
e) Charge air pressure sensor parts. You may elect to have maintenance, re-
f) Charge air temperature sensor placement or repair of these components and
systems performed by any repair establishment
7. Electronic control unit or individual without invalidating the Warranty.
8. Components used in the above mentioned
systems The use of other than Scania replacement parts
also does not invalidate the warranty on other
components unless such parts cause damage to
IMPORTANT! warranted parts. However, the cost of such ser-
vices or parts will not be covered by the Warran-
This list does not include all expendable mainte- ty.
nance parts. Expendable emission related parts If you install the engine in a way that makes the
requiring scheduled maintenance are warranted engine's emission control information label hard
until their first scheduled replacement point. See to read during normal engine maintenance, you
Specific warranty exclusions below. must place a duplicate label on the vessel, as de-
scribed in 40 CFR 1068.105.

IMPORTANT!

Use of replacement parts which are not of equiv-

alent quality may impair the effectiveness of
emission control systems. Accordingly, it is rec-
ommended that only Scania repair or replace-
ment parts be used for maintenance, repair or
replacement of emission control systems.
If other than Scania parts are used for mainte-
nance, repair or replacement, the owner should
obtain assurance that such parts are warranted by
their manufacturer to be equivalent to genuine
Scania parts.

OPM 250 en-GB 13

© Scania CV AB 2022, Sweden
 Scania Engines engine warranty for marine engines

Specific warranty exclusions

This warrantydoes not cover:
1. Malfunctions in any part caused by any of
the following: misuse, abuse, improper ad-
justments, modifications, alteration, tamper-
ing, disconnection, improper or inadequate
maintenance, or use of fuels not recommend-
ed for the engine as described in the Opera-
tor's Manual.
2. Engine installation, including cooling sys-
tem, intake system and exhaust system in-
stallation, that is not completed in
accordance with the Scania installation in-
structions and emissions certificate for this
engine type, unless engine installation is the
engine manufacturer's fault or responsibility.
3. Damage resulting from accidents, acts of na-
ture or other events beyond the control of
Scania.
4. The replacement of expendable maintenance
items such as filters, hoses, belts, oil, ther-
mostat, exhaust system and coolant made in
connection with scheduled maintenance ser-
vices once these parts have been replaced.
5. Replacement items which are not genuine
Scania parts or not authorized by Scania as of
equal quality to the original parts.
6. Inconvenience, loss of use of the marine ves-
sel or commercial loss.
7. Any marine vessel on which the actual use
cannot be accurately determined.
8. Any marine vessel operating outside the
United States.

OPM 250 en-GB 14

© Scania CV AB 2022, Sweden
 Scania Engines engine warranty for marine engines

Customer support
In the event that You do not receive the warranty
service to which You believe You are entitled
under the Warranty, or if You need additional
support or information concerning the Warranty,
please contact:
Scania USA, Inc.
Address: 121 Interpark Blvd, suite 1002, 78216,
San Antonio, Texas
Mailing address: 121 Interpark Blvd, suite 1002,
78216, San Antonio, Texas
Telephone: +1 210 403 0007
Fax:+1 210 403 0211
E-mail: na.contact@scania.com

OPM 250 en-GB 15

© Scania CV AB 2022, Sweden
 Engine data plate

Engine data plate

The engine data plate indicates, in the form of a
code, the engine type, its size and applications. It
also indicates the engine power and the nominal
engine speed. Where applicable, the engine’s EU
type approval for exhaust emissions is indicated
under Output.
The engine serial number is stamped onto the top
of the cylinder block at the front right.

Example: DI13 070M

Made b y
DI Supercharged diesel engine with water-
cooled charge air cooler.
Type DI13 070M
13 Displacement in whole dm3. Engine No 6950106
070 Performance and certification code. The Output. 405 kW 1800 r pm.
code indicates, together with the applica-
tion code, the normal gross engine output.

348 329
M Code for application. M means for marine
use.
Example of an engine data plate.

OPM 250 en-GB 16

© Scania CV AB 2022, Sweden
 Component identification

Component identification
Engine

1 1 2 3 4 10 11 12 13 8 14 15 16 17
8 9 18

19

5 22

6 21

366 022
20
7
The illustration shows a normal version of a DI13 engine with heat exchanger. The engine ordered may have
different equipment.
1. Oil filler.
2. Oil dipstick.
3. Fuel manifold bleed nipple.
4. Engine data plate.
5. Fuel filter.
6. Hand pump for fuel.
7. Oil plug.
8. Sacrificial anodes (2 pcs).
9. Sea water outlet.
10. Heat exchanger.
11. Holes for draining condensation in charge air cooler.
12. Nipple for draining and filling coolant.
13. Charge air cooler.
14. Thermostat.
15. Expansion tank.
16. Oil filter.
17. Filling coolant.
18. Sight glass for checking coolant level.
19. Engine serial number, stamped on the cylinder block
20. Centrifugal oil cleaner.
21. Sea water intake.
22. Sea water pump.

OPM 250 en-GB 17

© Scania CV AB 2022, Sweden
 Component identification

SCR system
For engines equipped with SCR systems, the il-
lustration shows an overview of the component
parts of the SCR system.

1
2
4
3

6 2
3 5
13

12
14 6

11
8
9 7
10

422 815
15

1. Reductant pump (optional).

2. Reductant pressure pipe.
3. Reductant return pipe.
4. Reductant tank (buffer tank).
5. Engine management unit.
6. NOx sensor with control unit.
7. Coolant pipe.
8. Exhaust routing valve.
9. Handle to bypass the SCR system.
10. Bypass pipe.
11. Evaporator.
12. Reductant doser.
13. Exhaust gas temperature sensor.
14. SCR catalytic converter.
15. Coolant pump for the exhaust routing valve (option).

OPM 250 en-GB 18

© Scania CV AB 2022, Sweden
 Starting and running

Starting and running

Checks before first start
Before the engine is started for the first time, car-
ry out the maintenance items listed under First
start in the maintenance schedule. Check the fol-
lowing (also see Maintenance interval):
• Oil level. 2
• Coolant.
1
• Fuel level. 3
• Fluid level in batteries.
• State of battery charge.
• Condition of the drive belt.
4

Reductant tank
The illustration shows the component parts of
the reductant tank (buffer tank). You can access
the reductant pump in the tank by opening the in-
spection hatch (4) on the right-hand side of the
tank.
Reductant volume:
• Total volume: 30 litres (7.9 US gallons).
• Filling volume: 16 litres (4.2 US gallons).

388 133
5
Reductant tank.
1. Reductant pick-up unit.
2. Reductant pump.
3. EEC3 control unit.
4. Inspection hatch.
5. Drain plug.
6. Reductant tank.

OPM 250 en-GB 19

© Scania CV AB 2022, Sweden
 Starting and running

Reductant pump

When the reductant pump is new, the check

valves may need to be slackened.

Note:
There may be 2 reductant pumps: 1 located in the
reductant tank and 1 located between the main
tank for reductant and the buffer tank.

IMPORTANT!

Blow the reductant pump suction nipple with

compressed air (approx. 6 bar) for at least 3 sec-
onds before starting the engine for the first time.

336 838
Reductant pump suction nipple.

Reset button on the reductant tank

The reductant tank has a reset button that can be

used, for example, when the tank is topped up for
the first time.
When the Scania EEC3 control unit checks fill-
ing, the following applies:
• If you keep the button depressed for 5 sec-
onds, the reductant pump operates for 30 min-
utes. This function can be used, for example,
when the tank is topped up for the first time
or after cleaning.

• If the reductant pump is operating and you

briefly press the button, the pump stops and a
fault code is generated.
388 132

The reductant pump can be restarted by

pressing the button, thus also making the
fault code passive. Reset button.
• If the level does not increase even though the
reductant pump is running, the pump is
switched off and a fault code is generated. If
you briefly press the button, the pump re-
starts.

OPM 250 en-GB 20

© Scania CV AB 2022, Sweden
 Starting and running

Checks before running Starting at low temperatures

Carry out daily maintenance as described in the Take the local environmental requirements into
maintenance schedule prior to operation. See account. Use a fuel heater and engine heater to
Maintenance interval. avoid starting problems and white smoke.
Scania recommends that an engine heater should
be used if the engine will be used at temperatures
below -10°C (14°F).
Starting the engine A low engine speed and a moderate load on a
cold engine limits white smoke, gives better
combustion and warms up the engine more
WARNING! quickly than warming it up with no load.
Never use starter gas or similar agents to help Avoid running it longer than necessary at idling
start the engine. This can cause an explosion in speed.
the intake manifold and possible injury.
Only start the engine in a well ventilated area.
When the engine is run in an enclosed space, Running
there must be effective devices to extract exhaust
gases and crankcase gases. Check instruments and warning lamps at regular
intervals.

Engine speed range

IMPORTANT! The engine operating speed range is between low
idling and the nominal engine speed. The nomi-
The starter motor must only be cranked twice for nal engine speed is indicated on the engine data
30 seconds at a time. After that, it must rest for at plate. Low idling can be set between 500 and
least 5 minutes before the next attempt to start it. 1,050 rpm.

For environmental reasons the Scania engine has

been developed to be started with a low fuel feed.
Using unnecessarily large amounts of fuel when
starting the engine always results in emissions of
unburnt fuel.
1. Open any fuel cock.
2. Disengage the engine.
3. If the engine has a battery master switch:
Switch on the power by means of the battery
master switch.
4. Start the engine.

If the fuel tank has been run dry or if the engine

has not been used for a long time, bleed the fuel
system. See the section Venting the fuel system.

OPM 250 en-GB 21

© Scania CV AB 2022, Sweden
 Starting and running

Limp home operation Coolant temperature

If there is a fault in the normal throttle opening or
if CAN communication is interrupted, the fol- IMPORTANT!
lowing emergency operation option is provided:
An excessive coolant temperature can cause en-
A CAN fault or throttle opening fault in an all- gine damage.
speed engine (both signal and idling switch):
• The throttle opening value is 0% and the en-
gine is running at normal idling speed. Normal coolant temperature during operation is
90 to 95°C/194 to 203°F for engines with a heat
• The throttle opening value is 0% and the en- exchanger and 83 to 88°C/181 to 190°F for en-
gine is running at fixed raised idling speed gines with keel cooling.
(750 rpm) if this function is activated.
Alarm levels are set in the engine control unit.
CAN fault: The default setting for the lowest and highest
limit values for high coolant temperature are
• The engine is switched off if the shutdown 95°C/203°F and 105°C/221°F respectively.
function is activated.
The high coolant temperature alarm has the fol-
Driving at high altitude lowing functions:
When driving at high altitudes engine power is • Alarm only.
reduced automatically due to the lower oxygen
content in the air. It is then not possible to run the • Alarm and torque reduction at the lowest lim-
engine at maximum power. it value.
• Alarm at the lowest limit value and engine
• ICFN and PRP engines may be used at an al- shutdown at the highest limit value.
titude of up to 2,000 metres.
• Alarm, torque reduction at the lowest limit
• IFN, Patrol Craft Longand Patrol Craft Short value and engine shutdown at the highest lim-
engines must not be used at an altitude of it value.
more than 1,000 metres.
• Alarm at the lowest limit value and engine
• Contact Scania if the operating conditions de- shutdown at the highest limit value with the
viate from these. possibility of engine shutdown override con-
trol.
• Alarm, torque reduction at the lowest limit
value and engine shutdown at the highest lim-
it value, with the possibility of engine shut-
down override control.

If run for extended periods under an extremely

light load, the engine may have difficulty in
maintaining the coolant temperature. At an in-
creased load the coolant temperature rises to the
normal value.

OPM 250 en-GB 22

© Scania CV AB 2022, Sweden
 Starting and running

Oil pressure Alarm levels, engines with SCR system

Normal oil pressure during operation is 3-6 bar If the engine is fitted with the SCR system, the
(43.5-87 psi). The lowest permitted oil pressure engine management system activates an alarm at
when idling is 0.7 bar (10.2 psi). the levels below. The values refer to overpres-
sure, not absolute pressure. The alarm is activat-
The incorrect oil pressure alarm has the follow- ed after 10 seconds.
ing functions:
• At an engine speed below 600 rpm and an oil
• Alarm only. pressure below 0.7 bar (10.2 psi).
• Alarm and torque reduction by 30%. • At 1,200 rpm and with oil pressure below 2.2
• Alarm and engine shutdown. bar (32 psi).
• Alarm and engine shutdown override control. • At 2,100 rpm and with oil pressure below 2.8
bar (40.6 psi).
Note:
High oil pressure (above 6 bar/87 psi) is normal
if the engine is cold when started. Charging indicator lamp
If the lamp comes on during operation: Check
and adjust the alternator drive belt according to
the instructions in the section Checking the drive
Alarm levels, engines without SCR sys- belt.
tem
If the engine does not have the SCR system, the If the charging indicator lamp is still on, this
engine management system activates an alarm at could be due to an alternator fault or a fault in the
the levels below. The values refer to overpres- electrical system.
sure, not absolute pressure. The alarm is activat-
ed after 3 seconds.
• At an engine speed below 1,000 rpm and an
Belt transmission
oil pressure below 0.7 bar (10.2 psi). When the belt transmission is new, it may make
• At an engine speed above 1,000 rpm and an a squeaking noise when running. This noise is
oil pressure below 2.5 bar (36.3 psi). normal and disappears after 50-100 hours of op-
eration. The noise does not affect the service life
of the belt transmission.

OPM 250 en-GB 23

© Scania CV AB 2022, Sweden
 Starting and running

Bypass of the SCR system

If the SCR system has been activated and needs 1
to be bypassed in an emergency, this can be done
manually using the handle on the exhaust routing
valve.
Proceed as follows:

1. Remove the pin.

2. Remove the bolt. 2

374 888
3. Pull the handle to the Open position. See il-
lustration.

374 881
4. Lock the handle in the open position using
the pin and the bolt.

OPM 250 en-GB 24

© Scania CV AB 2022, Sweden
 Starting and running

Engine shutdown

IMPORTANT!

There is risk of the oil boiling and of damage to

the turbocharger if the engine is switched off
without cooling. The power must not be
switched off before the engine has stopped.
If the engine is fitted with a battery master switch
and an SCR system, the SCR system must run for
a while after the engine has been switched off to
allow it to cool down. During this period the
power must not be cut using the battery master
switch.

Note:
The battery voltage must remain on for a few
seconds after the 15 voltage is switched off so
that the control units can store the values and
switch to standby mode.
10 prohibited engine shutdowns in a row will
cause a torque reduction (70% of fuel quantity).
Reset the engine by switching it off correctly
once.

1. Run the engine without a load for a few min-

utes if it has been run continuously with a
heavy load.
2. Switch off the engine.

OPM 250 en-GB 25

© Scania CV AB 2022, Sweden
 Starting and running

Checks after driving

WARNING!

Secure the starting device or disconnect a battery

cable before working on the engine. If the engine
starts unexpectedly, there is a serious risk of in-
jury.
There is always a risk of sustaining burns when
an engine is hot. Particularly hot parts are branch
pipes, turbochargers, oil sumps, and hot coolant
and oil in pipes and hoses.

IMPORTANT!

Check the coolant level following the first start.

Top up with coolant as necessary.

1. Check that the power supply has been cut.

2. Top up the fuel tank. Make sure that the filler
cap and the area round the filler opening are
clean to avoid contamination of the fuel.
3. If the engine is equipped with an SCR sys-
tem: Top up the reductant tank. Make sure
that the filler cap and the area round the filler
opening are clean to avoid contamination of
the reductant.
4. If there is a risk of freezing, the cooling sys-
tem must contain enough glycol. See the sec-
tion Risk of freezing.
5. If the temperature is below 0°C (32°F): Pre-
pare for the next start by connecting the en-
gine heater (if fitted).

OPM 250 en-GB 26

© Scania CV AB 2022, Sweden
 Maintenance

Maintenance
IMPORTANT!
The maintenance programme covers a number of
points that are divided into the following sec- On delivery a Scania engine is optimised for its
tions: application. However, regular maintenance is
necessary to
• Lubrication system.
• Air cleaner. • prevent unplanned stops
• Cooling system. • extend the service life of the engine
• Fuel system. • maximise the long-term emission perfor-
mance of the engine
• Miscellaneous.
• give the best possible operating economy.

WARNING!

Secure the starting device or disconnect a battery

cable before working on the engine. If the engine
starts unexpectedly, there is a serious risk of in-
jury.
There is always a risk of sustaining burns when
an engine is hot. Particularly hot parts are branch
pipes, turbochargers, oil sumps, and hot coolant
and oil in pipes and hoses.

The maintenance programme includes the fol-

lowing:
• R maintenance: One event when taken into
service.
• S maintenance: Minimum basic maintenance.
• M maintenance: More extensive mainte-
nance.
• L maintenance: Includes nearly all mainte-
nance items in the form.
• XL maintenance: Includes all maintenance
items in the form.

During a period, the sequence is S-M-S-L-S-M-

S-L-S-M-S-XL.

XL
L L
M M M
S S S S S S

500 1000 1500 2000 2500 3000 3500 4000 4500 5000 5500 6000

OPM 250 en-GB 27

© Scania CV AB 2022, Sweden
 Maintenance

Maintenance interval

Daily First time at Interval (hours) Minimum

first start 500 500 1,000 2,000 6,000 annu- every
R S M L XL ally 5
years
Lubrication system
Checking the oil level X X
Changing the oil X X X X X X
Cleaning the centrifugal oil
X X X X X X
cleaner
Renewing the oil filter X X X X X X
Air cleaner
Reading the vacuum indicator X X X X X X
Renewing the filter element X X X
Renewing the safety cartridge X X X
Renewing an air filter with a
X X X
non-renewable element
Cooling system
Checking the coolant level X X X X X X X
Checking the coolant's antifreeze
X X X X
and corrosion protection
Checking the sacrificial anodes X X X X X X
Checking the sea water pump
X X X X X X
impeller
Changing the coolant and clean-
X X
ing the cooling system
Fuel system
Checking the fuel level X X
Draining the water separating
X X X X X X
prefilter
Renewing the fuel filters X X X X
Miscellaneous
Checking the drive belt X X X X X
Checking for leakage X X X X X X
Checking and adjusting the valve
X X X
clearance and unit injectors
Renewing the reductant filters X X X X X X

OPM 250 en-GB 28

© Scania CV AB 2022, Sweden
 Lubrication system

Lubrication system For operation at extremely low outdoor tempera-

tures: Consult your nearest Scania workshop on
how to avoid starting difficulties.
Oil grade
Scania LDF stands for the Scania Long Drain Viscosity Outdoor temperature in °C
Field test standard. Scania LDF oils have been class
carefully selected after extensive testing. The ap-
proval is only granted to the highest grade engine SAE 20W-30 -15°C - +30°C
oils available on the market. SAE 30 -10°C - +30°C
SAE 40 -5°C - +45°C
Recommended engine oil SAE 50 0°C - +45°C
Scania Oil LDF-3 SAE 5W-30 < -40°C - +30°C
Scania Oil LDF-2 SAE 10W-30 -25°C - +30°C
Scania Oil LDF SAE 15W-40 -20°C - +45°C
Scania Oil E7

The engine oil must satisfy the following quality Viscosity Outdoor temperature in °F
requirements: class
SAE 20W-30 5°F - 86°F
• ACEA E5/API CI-4.
SAE 30 14°F - 86°F
• ACEA E7/API CI-4 +.
SAE 40 23°F - 113°F
• For engines not run on low-sulphur fuel, the
TBN (Total Base Number) should be at least SAE 50 32°F - 113°F
12 (ASTM D2896). SAE 5W-30 < -40°F - 86°F
• Oils with a low ash content (ACEA E9/API SAE 10W-30 -13°F - 86°F
CJ4) are not recommended. SAE 15W-40 -4°F - 113°F
Check with your oil supplier that the oil satisfies
these requirements.
If the engine is used in areas of the world where
engine oil with ACEA or API classification is
not available, the oil grade must be measured in
actual operation. In this case contact the nearest
Scania workshop.

OPM 250 en-GB 29

© Scania CV AB 2022, Sweden
 Lubrication system

Labels for filled engine oil grade

When changing oil it is important to use the cor-

rect engine oil grade. The oil filler should there-
fore be clearly marked with a label for the filled
oil grade. However, there are only labels for oils
with Scania LDF approval and oil grade
ACEA E7.
Stick on a new label if the oil type or oil grade is
changed in favour of any of the oil types above.
Replace the label if it is missing.

391 050
Filling label in the cylinder block.

364 191
Filling label in the rocker cover.

If the oil grades below are used, you can order oil
filler labels from Scania.

Oil grade Colour Part no. Part no.

Filling in the cylinder block Filling in the rocker cover
Scania LDF-3 Red 2 132 426 2 427 133
Scania LDF-2 Blue 2 132 424 -
Scania LDF Grey 2 269 345 -
ACEA E7 White 2 132 425 2 427 132

OPM 250 en-GB 30

© Scania CV AB 2022, Sweden
 Lubrication system

Oil analysis
To be able to extend the oil change intervals us-
ing an oil analysis, Scania LDF-3 and LDF-2 oils
must be used. Certain laboratories offer engine
oil analysis.
The following requirements must remain satis-
fied when the oil is changed:
• Viscosity at 100°C (212°F): max. ±20% of
original value of the fresh oil.
• TBN (in accordance with ASTM D4739): >
3.5.
• TBN (in accordance with ASTM D4739): >
TAN (in accordance with ASTM D664).
• Soot (DIN 51452): < 3%.
• Fuel in the oil: <5%

Such analysis measures the oil’s TBN (Total

Base Number), TAN (Total Acid Number), fuel
dilution, water content, viscosity and the quanti-
ty of particles and soot in the oil.
The result of a series of analyses is used as the
basis for establishing a suitable oil change inter-
val.
If the conditions are changed, a new oil analysis
programme must be carried out to establish new
oil change intervals. Work out the new oil
change interval for the engine in conjunction
with the workshop.

REQUIREMENT!

Only Scania LDF oils may be used in conjunc-

tion with oil analysis and a possible extended oil
change interval.
Depending on the market, the warranty condi-
tions may also change if the oil change intervals
differ from the recommended Scania timetable.

OPM 250 en-GB 31

© Scania CV AB 2022, Sweden
 Lubrication system

Checking the oil level

Note:
2 2 1
Leave the engine off for at least 7 minutes before
you check the oil level.
If the oil level exceeds the maximum level, the
oil must be changed. Check the cause if the oil
level exceeds the maximum level and contact
your nearest Scania workshop if you suspect a
fault.

1. Pull out the oil dipstick (1) and check the oil
level. The correct level is between the mini-

377 317
mum and maximum marks on the oil dip-
stick.
2. Fill with more oil at point 2 in the illustration 1. Oil dipstick.
when the oil level is at or below the lower 2. Oil filler.
mark.
Information on the correct oil type is found
under the heading Oil grade.

Maximum angles of inclina-

tion during operation
Maximum permissible angles of inclination dur- 30°
ing operation vary, depending on the type of oil
sump. See illustration.
30°
30° 30°

25°

25°
30° 30°

25°

25°
343 842

30° 30°

OPM 250 en-GB 32

© Scania CV AB 2022, Sweden
 Lubrication system

Changing the oil

WARNING!

Hot oil can cause burns and skin irritation. Wear

protective gloves and eye protection when
changing hot oil. Make sure that there is no pres-

362 865
sure in the lubrication system before changing
the oil. The oil filler cap must always be in place
when starting and running the engine to prevent Max. 45 litres (11.9 US gallons).
oil being ejected.
Min. 39 litres (10.3 US gallons).

Note:
Change oil more often if the engine is subjected
to particularly demanding operation, such as a
dusty environment, or if deposits on the paper in

362 866
the centrifugal oil cleaner are thicker than 28 mm
(1.1 in).
Renew the oil filter and clean the centrifugal oil Max. 36 litres (9.5 US gallons).
cleaner when changing oil. Min. 30 litres (7.9 US gallons).

Environment

Use a suitable container. Used oil must be dis-

posed of as specified in national and internation-
al laws and regulations.

362 867
Max. 34 litres (9.0 US gallons).
Min. 28 litres (7.4 US gallons).
1. Unscrew the oil plug and drain the oil when
the engine is hot. In certain engine types the
oil is pumped out by means of a bilge pump.
If the engine is drained via the valve, the oil
should be hot. Alternatively, use a pump.
362 868

This is so that draining occurs more quickly.

2. Wipe off the magnet on the oil plug.
Max. 30 litres (7.9 US gallons).
3. Renew the gasket on the oil plug.
Min. 25 litres (6.6 US gallons).
4. Refit the oil plug.
5. Fill with the amount of oil specified for the
oil sump.
6. Wait at least 7 minutes.
7. Check the level on the oil dipstick.

OPM 250 en-GB 33

© Scania CV AB 2022, Sweden
 Lubrication system

Cleaning the centrifugal oil

cleaner

WARNING!

The oil may be hot. Carefully remove the cover

from the centrifugal oil cleaner.
Wear eye protection and protective gloves when
working on the centrifugal oil cleaner.

When the centrifugal oil cleaner is cleaned, there

should be some dirt deposits on the paper in the
rotor cover. If the paper is clean, the equipment
is not working as it should. If this is the case, in-
vestigate the cause of this.
Renew the paper more frequently if the dirt de-
posits are thicker than 28 mm (1.1 inches) during
a scheduled oil change.

1. Clean the cover.

2. Unscrew the nut securing the outer cover.
3. Let the oil run out from the rotor.
4. Lift out the rotor. Wipe off the outside.
x 1.5
5. Loosen the rotor nut and unscrew it about
1.5 turns.

Note:
Take care not to damage the rotor shaft.

133 315

OPM 250 en-GB 34

© Scania CV AB 2022, Sweden
 Lubrication system

6. If the rotor nut is jammed: Turn the rotor up-

side down and fasten the rotor nut in a vice.
See illustration.
7. Use protective jaws so as not to damage the
grooves of the rotor nut. M20
8. Turn the rotor 1.5 turns anti-clockwise by
hand.
9. If this does not work: Screw 2 nuts together
with an M20 screw.
10. Position the screw head at the bottom of the
rotor. x 1.5
11. Position a ring spanner on the lower nut and
turn the rotor 1.5 turns anti-clockwise.

IMPORTANT!

Do not attach the rotor directly to the vice. Never

strike the rotor cover.

12. Remove the rotor cover by holding the rotor

in both hands and tapping the rotor nut
against the table. Never strike the rotor di-
rectly as this may damage its bearings.

13. Remove the strainer from the rotor cover. If

the strainer is stuck, insert a screwdriver be-
tween the rotor cover and strainer and care-
fully prise them apart.
133 317

OPM 250 en-GB 35

© Scania CV AB 2022, Sweden
 Lubrication system

14. Remove the paper insert.

15. Scrape off any remaining dirt deposits from
the inside of the rotor cover. If the deposits
on the paper are thicker than 28 mm (1.1 in),
the centrifugal oil cleaner must be cleaned
more often.

333 044
16. Wash the parts according to the applicable
industrial method.
17. Check the 2 nozzles on the rotor. Ensure that
they are not blocked or damaged.
Renew any damaged nozzles.
18. Check that the bearings are undamaged.
Renew damaged bearings.

333 037

1
19. Fold and fit a new paper insert on the inside
of the rotor cover as illustrated.

2 3 4
387 437

OPM 250 en-GB 36

© Scania CV AB 2022, Sweden
 Lubrication system

20. Fit the strainer onto the rotor.

21. Fit a new O-ring to the foot of the centrifugal
oil cleaner.
22. Refit the rotor cover. Ensure that the O-ring
is not outside the edges, but is in the groove.
23. Screw the rotor nut back on by hand.
24. Check that the shaft is not damaged or loose.
Contact a Scania workshop if the rotor shaft
needs renewing.

Note:
Take care not to damage the rotor shaft.

25. Refit the rotor and rotate it by hand to make

sure it rotates easily.

OPM 250 en-GB 37

© Scania CV AB 2022, Sweden
 Lubrication system

26. Fit a new O-ring in the cover.

27. Refit the cover and tighten the lock nut.
Tightening torque 20 Nm (15 lb-ft).

IMPORTANT!

To reduce the risk of oil leakage it is important to

tighten the cover to the correct tightening torque.

333 043
Operational testing of the
centrifugal oil cleaner
Operational testing need only be carried out if it
is suspected that the centrifugal oil cleaner is
malfunctioning. For example, if there are unusu-
ally few deposits given the distance driven.
1. Run the engine until it reaches normal oper-
ating temperature.
2. Turn off the engine and listen for the sound
from the rotor. It should continue rotating for
a time, even when the engine has stopped.
3. Use your hand to feel if the filter housing is
vibrating.
4. If the filter housing is not vibrating, disman-
333 039

tle and check the centrifugal oil cleaner.

OPM 250 en-GB 38

© Scania CV AB 2022, Sweden
 Lubrication system

Renewing the oil filter

IMPORTANT!

Clean the centrifugal oil cleaner at the same time

as you change the oil filter. Otherwise, the oil fil-
ter will become blocked and the resistance in the
filter will increase. If this happens, an overflow
valve in the filter retainer opens and lets the oil
pass without being filtered.

1. Remove the old filter.

2. Oil the rubber gasket on the new filter.
3. Tighten the filter by hand. Never use tools
because the filter could sustain damage, ob-
structing circulation.
4. Start the engine and check for leaks.

325 164
Renewing the commutative
oil filter
While driving, the rotary control (1) should point
upwards to minimise pressure losses in the filter
unit; see right-hand illustration. 1
1. Turn the rotary control 90° to the right so that
it points towards filter B. The oil then flows B
through the filter. A
2. Clean filter A with a cleaning cloth.
3. Unscrew filter A.
4. Apply oil to the gasket on the new filter.
5. Fill the filter with engine oil.
6. Screw filter A into place by hand until it
346 953

makes contact.
7. Turn screw a further half turn by hand.
8. Turn the rotary control 90° to the left so that
the rotary control points towards filter A.
Then renew filter B in the same way as filter
A.

OPM 250 en-GB 39

© Scania CV AB 2022, Sweden
 Air cleaner

Air cleaner

WARNING!
3
Never start the engine without the air filter in po-
sition. Without the air filter, there is a risk of dirt
being sucked into the engine. 2
The engine turbocharger will continue to rotate
and take in air for a time, even after the engine 1
has stopped. Therefore, wait for a few minutes
before opening the air cleaner.

IMPORTANT! 4
Renew the filter element earlier than the mainte-
nance interval if the vacuum indicator shows red.
5

385 833
The filter element must not be cleaned in water
or be blown clean with compressed air. There is Air cleaner with safety cartridge.
always a risk that the filter element will be dam-
1. Filter element.
aged when it is cleaned.
2. O-ring.
3. Vacuum indicator.
4. Safety cartridge.
5. Cover.

Reading the vacuum indicator

If the vacuum indicator's red plunger is fully vis-
ible, renew the air cleaner filter element in ac-
4 3
385 832

cordance with the following section.

Air cleaner without safety cartridge.

1. Filter element.
2. Vacuum indicator.
3. O-ring.
4. Cover.

OPM 250 en-GB 40

© Scania CV AB 2022, Sweden
 Air cleaner

Renewing the air cleaner filter

element and safety cartridge
1. Remove the cover from the air cleaner.
2. Renew the filter element.
3. If the air cleaner has a safety cartridge: Re-
move the safety cartridge and fit a new one.
4. Insert a torch into the filter element and
check that the filter paper is free of holes and
cracks.
5. Renew the O-ring if it is damaged or hard.
6. Assemble the air cleaner.
7. Ensure that the O-ring is not outside the edg-
es.
8. Reset the vacuum indicator by pressing in
the button marked in the illustration.

326 671
Renewing an air filter with a
non-renewable element

IMPORTANT!

If the engine has an air filter with a non-renewa-

ble Scania element, it should be renewed instead
of cleaned.
325 166

Air filter with a non-renewable element.

OPM 250 en-GB 41

© Scania CV AB 2022, Sweden
 Cooling system

Cooling system Antifreeze and corrosion protection

The antifreeze and corrosion protection used in
Coolant Scania engines should be antifreeze (ethylene
glycol) and corrosion protection.
Note:
Only Scania coolant or another product with
The coolant should be changed when the cooling functioning antifreeze and corrosion protection
system is cleaned: every 6,000 hours or at least may be used in Scania engines. Products not ful-
every 5 years. See Changing the coolant and filling the demands in this section may lead to
cleaning the cooling system. faults and damage occurring in the cooling sys-
tem. This can lead to the invalidation of Scania's
warranty for faults and damage caused by the use
The coolant recommended by Scania is a mix- of inappropriate coolant.
ture of water with antifreeze (ethylene glycol)
and corrosion protection. The coolant has several Addition of antifreeze and corrosion
characteristics which are important for the oper- protection to water
ation of the cooling system:
The coolant should contain 35-55% by volume
• Corrosion protection. antifreeze (ethylene glycol) and corrosion pro-
• Antifreeze. tection. The percentage varies depending on the
need for antifreeze.
• Increases the boiling point.
A minimum of 35% by volume of Scania anti-
Water freeze and corrosion protection is needed to pro-
vide sufficient corrosion protection.
Use only pure fresh water that is free from parti-
cles, sludge and other impurities. If there is un- Note:
certainty about the quality of the water, Scania
recommends use of Scania ready-mixed cool- Too high a dose of antifreeze and corrosion pro-
ants. See the section Recommended Scania prod- tection will increase the amount of sludge and
ucts. blockages accumulating in the radiator. Too low
a concentration can lead to corrosion of the cool-
ing system and ice formation at low tempera-
tures.

Measure the ethylene glycol content (antifreeze

and corrosion protection) with a refractometer
following the instructions in the Checking the
coolant's antifreeze and corrosion protectionsec-
tion.

OPM 250 en-GB 42

© Scania CV AB 2022, Sweden
 Cooling system

Risk of freezing

IMPORTANT!

The engine should not be subjected to heavy

loads when ice starts to build up in the cooling
system.

As the coolant starts to freeze, the water in the

coolant starts to crystallise and the percentage of
ethylene glycol in the coolant therefore rises. If
freezing produces a great increase in the amount
of ice, circulation problems could arise. There is
no risk of damage by freezing if the content of
Scania antifreeze and corrosion protection, or an
equivalent mixture of a similar product, is at
least 35% by volume.
Minimal ice formation in the coolant sometimes
causes disruptions without any risk of damage.
For example, the auxiliary heater may not work
for up to 1 hour after the engine has been started.
10 20 30 40 50 60%
The chart depicts coolant properties at different
percentages of antifreeze and corrosion protec- -10 C
o

tion concentration by volume. o

-16 C o 1
-20 C
Curve A: Ice formation starts (ice slush) o
-30 C
Curve B: Damage by freezing 3 2
o
Zone 1: Safe zone -40 C
Zone 2: Disruptions may occur (ice slush) o
-50 C
Zone 3: Risk of damage by freezing

121 134
o
-60 C
The following example shows coolant properties B A
with 30% by volume of antifreeze and corrosion
protection:
• Ice slush starts to form at -16°C (3°F).
• At -30°C (-22°F), there is a risk of disruptions
in the cooling system.
• There is no risk of damage by freezing with a
minimum antifreeze and corrosion protection
content of 35% by volume.

Example: If the temperature is -16°C (3°F), there

is a risk of damage by freezing if the percentage
of antifreeze and corrosion protection is 20% by
volume. At 30% antifreeze and corrosion protec-
tion by volume the coolant will not contain any
ice.

OPM 250 en-GB 43

© Scania CV AB 2022, Sweden
 Cooling system

Hot climates Recommended Scania products

In order to retain the corrosion protection and the
Scania Ready Mix 50/50
higher boiling point, it is essential to use coolant
consisting of water mixed with antifreeze and Scania Ready Mix 50/50 is a ready-mixed cool-
corrosion protection (ethylene glycol). This also ant containing 50% antifreeze (ethylene glycol)
applies in countries where the temperature never and corrosion protection and 50% water. It
drops below 0°C (32°C). should be used in cold countries where there is a
risk of freezing in the cooling system.
The coolant should always contain 35-55% anti-
freeze and corrosion protection by volume so
that the coolant properties ensure that the coolant Part no. Volume Volume
works correctly. litre US gallons
1 921 955 5 1.3
Topping up
1 921 956 20 5.3
Coolant must only be topped up with pre-mixed
coolant. The pre-mixed coolant can either be 1 921 957 210 55
concentrate mixed with clean freshwater or pre- 1 896 695 1,000 264
mixed coolant from the factory. Use only pure
fresh water that is free from particles, sludge and Scania concentrate
other impurities. Scania also produces coolant with antifreeze and
corrosion protection in the form of a concentrate.
IMPORTANT!
Part no. Volume Volume
Containers used for mixing coolant must be in-
tended for the purpose and free from any dirt or litre US gallons
contaminants. When the containers not in use 1 894 323 5 1.3
they must be kept closed to avoid collecting dirt 1 894 324 20 5.3
and dust.
1 894 325 210 55
1 894 326 1,000 264
Note:
Within the coolant change interval, coolant may
only be reused if it has been cleaned of dirt,
sludge and particles. If the coolant is contaminat-
ed with oil or fuel, it must not be reused.

OPM 250 en-GB 44

© Scania CV AB 2022, Sweden
 Cooling system

Antifreeze and corrosion protection

concentration table, litres
35% by volume of Scania antifreeze provides
sufficient corrosion protection.
Example:
• The total volume of the cooling system is 40
litres.
• The measured concentration of ethylene gly-
col is 35% by volume (freezing point -21°C).
According to the table there are 14 litres of
ethylene glycol in the cooling system.
• The required concentration of ethylene glycol
is 45 per cent by volume (freezing point -
30°C). According to the table, 18 litres of eth-
ylene glycol are required in the cooling sys-
tem.
• Since there are already 14 litres in the cooling
system, 4 litres of ethylene glycol must be
added to the cooling system (18 - 14 =
4 litres).

Adequate corrosion protection

Volume of ethylene glycol (%) 35 40 45 50 60 Cooling system volume
Ice slush forms (°C) -21 -24 -30 -38 -50 (litres)
11 12 14 15 18 30
14 16 18 20 24 40
18 20 23 25 30 50
21 24 27 30 36 60
25 28 32 35 42 70
28 32 36 40 48 80
32 36 41 45 54 90
35 40 45 50 60 100
39 44 50 55 66 110
Volume of ethylene glycol (litres)
42 48 54 60 72 120
46 52 59 65 78 130
49 56 63 70 84 140
53 60 68 75 90 150
56 64 72 80 96 160
60 68 77 85 102 170
63 72 81 90 108 180
67 76 86 95 114 190
70 80 90 100 120 200

OPM 250 en-GB 45

© Scania CV AB 2022, Sweden
 Cooling system

Antifreeze and corrosion protection

concentration table, US gallons
35% by volume of antifreeze provides sufficient
corrosion protection.
Example:
• The total volume of the cooling system is
10.6 US gallons.
• The measured concentration of ethylene gly-
col is 35% by volume (freezing point -6°F).
According to the table there are 3.7 US gal-
lons of ethylene glycol in the cooling system.
• The required concentration of ethylene glycol
is 45 per cent by volume (freezing point -
22°F). According to the table, 4.8 US gallons
of ethylene glycol are required in the cooling
system.
• Since the cooling system already contains
3.7 US gallons, fill another 1.1 US gallons of
ethylene glycol in the cooling system (4.8 -
3.7 = 1.1 US gallons).

Adequate corrosion protection

Volume of ethylene glycol (%) 35 40 45 50 60 Cooling system volume
Ice slush forms (°F) -6 -11 -22 -36 -58 (US gallons)
2.9 3.2 3.7 4 4.8 7.9
3.7 4.2 4.8 5.3 6.3 10.6
4.8 5.3 6.1 6.6 7.9 13.2
5.5 6.3 7.1 7.9 9.5 15.9
6.6 7.4 8.5 9.2 11.1 18.5
7.4 8.5 9.5 10.6 12.7 21.1
8.5 9.5 10.8 11.9 14.3 23.8
9.2 10.6 11.9 13.2 15.9 26.4
Volume of ethylene glycol (US gal- 10.3 11.6 13.2 14.5 17.4 29.1
lons) 11.1 12.7 14.3 15.9 19 31.7
12.2 13.7 15.6 17.2 20.6 34.3
12.9 14.8 16.6 18.5 22.2 37
14 15.9 18 19.8 23.8 39.6
14.8 16.9 19 21.1 25.4 42.3
15.9 18 20.3 22.5 26.9 44.9
16.6 19 21.4 23.8 28.5 47.6
17.7 20.1 22.7 25.1 30.1 50.2
18.5 21.1 23.8 26.4 31.7 52.8

OPM 250 en-GB 46

© Scania CV AB 2022, Sweden
 Cooling system

Checking the coolant level

WARNING!

Do not open the coolant filler cap in the expan-

sion tank if the engine is hot. Hot coolant and
steam may spray out and cause burns. If the cap
has to be opened do it slowly to release the pres-
sure before removing the cap.
Use protective gloves as coolant can cause irrita-
tion if it comes in contact with the skin.

IMPORTANT!

It is not permissible to top up large amounts of

coolant via the expansion tank. Filling via the ex-
pansion tank leads to air locks in the cooling sys-
tem which can lead to e.g. cavitation damage to
the coolant pump shaft seal. If a large amount of
coolant needs to be added, follow the instruc-
tions in the section Filling coolant.
Only pour pre-mixed coolant into the cooling
system.

The following instructions apply to Scania ex-

pansion tanks. For other types of expansion
tanks, follow the manufacturer’s instructions.
1. Check the coolant level through the sight
glass on the expansion tank.
2. Top up with coolant as necessary.

OPM 250 en-GB 47

© Scania CV AB 2022, Sweden
 Cooling system

Checking the coolant's anti-

freeze and corrosion protec-
tion
Tools

Designation Illustration
Refractometer

305 523

138008

WARNING!

Avoid skin contact with coolant as this may

cause irritation to the skin. Wear eye protection
and gloves when handling coolant.

IMPORTANT!

Use only pure fresh water that is free from parti-

cles, sludge and other impurities.

1. Pour a small amount of coolant into a con-

tainer and check that the coolant is pure and
clear.
2. Change the coolant if it is contaminated or
cloudy.
3. Measure the antifreeze and corrosion protec-
tion content with the refractometer.

The following rules apply to ethylene glycol-

based coolant:
• The antifreeze and corrosion protection con-
tent must be a minimum of 35 per cent by vol-
ume for corrosion protection to be sufficient.
• An antifreeze and corrosion protection con-
tent greater than 55 percent by volume im-
pairs the ability to protect against frost.
• If ice forms in the coolant, there are disrup-
tions initially, but there is no immediate risk
of damage. The engine should not be subject-
ed to heavy loads when ice starts to form.

OPM 250 en-GB 48

© Scania CV AB 2022, Sweden
 Cooling system

Checking the sacrificial an-

odes

IMPORTANT!

Corrosion of sacrificial anodes depends on the

operating environment. Therefore, check the
sacrificial anodes every third month during the
first year of commissioning or when changing
the operating environment.

325 163
Position of sacrificial anodes.
1. Drain the sea water circuit as described in the
Draining the sea water circuitsection.
2. Remove all sacrificial anodes.

3. Check all sacrificial anodes:

17 mm
– Scrape off all loose material and check the
corrosion.
– Renew all sacrificial anodes if there is less
than ¾ (2) remaining of any of the sacrifi-
cial anodes.
– If the sacrificial anodes are very corroded
60 mm

(3), the length of the intervals for checking

the sacrificial anodes should be halved. If
the sacrificial anodes are very corroded,
they often come loose entirely.
4. Renew the gasket when fitting.

387 845

1 2 3
1. New sacrificial anode.
2. Approx. 3/4 remains.
3. Approx. 1/4 remains.

OPM 250 en-GB 49

© Scania CV AB 2022, Sweden
 Cooling system

Checking the sea water pump

impeller
1. Drain the sea water circuit as described in the
Draining the sea water circuitsection.
2. Remove the sea water pump cover. See illus-
tration.
3. Check that the vanes of the impeller are not
heavily splintered or damaged.

Renewing the sea water pump impel-

ler
Special tool

330 593
Number Designation Illustration
98 482 Puller
326 942

Note:
If the impeller must be renewed frequently, the
cleaning of the sea water needs to be improved.
There should be a spare impeller and puller on
board.
The impeller can be deformed during extended
periods of inactivity. Renew the impeller before
starting or remove the impeller before longer pe-
riods of stoppage.

1. Pull out the impeller using the puller. Note

the direction of rotation of the impeller
vanes.

2. Fit a new impeller and cap. Check that the

cap seal is not hard or damaged.

IMPORTANT!

When fitting the new impeller, bend the vanes in

the same direction as on the old one.
325 165

OPM 250 en-GB 50

© Scania CV AB 2022, Sweden
 Cooling system

Changing the coolant and

cleaning the cooling system
Draining coolant
Special tool

Number, designation Illustration

2 443 679, coolant
pump

360 625

WARNING!

Do not open the coolant filler cap in the expan-

sion tank if the engine is hot. Hot coolant and
steam may spray out and cause burns. If the cap
has to be opened do it slowly to release the pres-
sure before removing the cap.
Use protective gloves as coolant can cause irrita-
tion if it comes in contact with the skin.

Environment

Use a suitable container. Used coolant must be

disposed of as specified in national and interna-
tional laws and regulations.

1. Open the expansion tank cap.

2. Place the hose from the coolant pump in an
empty container.
3. Connect the pump to the draining nipple in
the cylinder block. See illustration.
4. Connect the pump’s 2 cable terminals to the
battery’s negative and positive terminal.
Make sure that the drainage starts. If the
drainage does not start: Change the position
326 710

of the cable terminals.

5. Repeat the procedure at the cooling system's
Drain nipple in the cylinder block.
lowest drainage point. The location of the
lowest drainage point on the engine may dif-
fer depending on engine application.

OPM 250 en-GB 51

© Scania CV AB 2022, Sweden
 Cooling system

Draining the sea water circuit 3 2 1

1. Close the bottom valve on the sea water inlet
and remove the connection pipe (1) on the
outlet from the heat exchanger.
2. Remove the cover (2) from the sea water
pump to empty the pump completely.

The lowest point in the sea water circuit may be

at different points, but it is usually in the sea wa-
ter pump intake (3).

IMPORTANT!

330 586
Plug the connections to prevent dirt ingress into
the engine.

Removing the charge air cooler 3 1

When the cooler core of the charge air cooler
needs cleaning, the charge air cooler must be re-
moved if there is no space behind it to take out
the cooler core.
Before starting work: Make sure that the cooling
system is empty as described earlier.
1. Remove the protective plate (1) on the 2
charge air cooler.
2. Remove the charge air pipe (2) between the
charge air cooler and the turbocharger. Twist
the pipe to facilitate removal.
If the turbocharger has a wastegate valve and

362 794
the charge air pipe must be removed, the pipe
bracket must be removed and the pipe must
be turned 90° upwards before the hose and
the pipe are removed.
3. Remove the charge air pipe (3) between the
charge air cooler and the inlet pipe.
4. Remove the water pipe (4) of the charge air
cooler. 4 6 5
5. Release the hose clamp and remove the sea
water hose (5) between the charge air cooler
and the heat exchanger.
6. Remove the charge air cooler (6).
362 795

OPM 250 en-GB 52

© Scania CV AB 2022, Sweden
 Cooling system

Cleaning the charge air cooler

The charge air cooler must be removed if there is
no space behind it to take out the cooler core. See
previous section.
1. Remove the screws on the charge air cooler
covers (1) and remove the covers. Mark the
covers so that you can put them back on the
correct side.
2. Press in the cooler core (3) slightly on one
side and pull it out from the other side.
3. Clean the cooler core on the outside with a
slightly acidic detergent, e.g. 2 479 017. Re-
move any internal deposits using a round
rod. Renew the cooler core if it is damaged.

IMPORTANT!

Do not use caustic soda as this could damage the

aluminium.

4. Renew the O-rings (2) and assemble the

charge air cooler.
5. Tighten the M8 screws on the covers to 15
Nm (11 lb-ft).

1
2

4
1
2
362 798

5 2
1. Cover.
2. O-rings.
3. Cooler core.
4. Charge air cooler housing.
5. Spacer.

OPM 250 en-GB 53

© Scania CV AB 2022, Sweden
 Cooling system

Removing the heat exchanger

When the cooler core of the heat exchanger
needs cleaning, the heat exchanger must be re-
moved.
Before starting work: Make sure that the cooling
system is empty as described earlier.

1. Undo the V-clamp for the hose (1) between

the heat exchanger and the water-cooled ex- 2 4 3 2
1
haust pipe bend, if the engine has one. Bend
the hose to one side.
2. Remove the inlet and outlet coolant pipes
and the sea water pipe (2) from the heat ex-
changer.
3. Release the hose clamp and remove the sea
water hose (3) between the charge air cooler 5
and the heat exchanger.
4. Remove the screws holding the heat ex-

362 796
changer (4) in the 2 brackets.
5. Slacken the screws holding the heat ex-
changer bracket (5) in the cylinder block suf-
ficiently to allow the heat exchanger to be
removed.
6. Remove the heat exchanger.

OPM 250 en-GB 54

© Scania CV AB 2022, Sweden
 Cooling system

Cleaning the heat exchanger

1. Remove the screws on the heat exchanger
covers (1) and remove the covers. Mark the
covers so that you can put them back on the
correct side.
2. Press in the cooler core (5) slightly on one
side and pull it out from the other side.
3. Clean the cooler core on the outside with a
slightly acidic detergent, e.g. 2 479 017. Re-
move any internal deposits using a round
rod. Renew the cooler core if it is damaged.

IMPORTANT!

Do not use caustic soda as this could damage the

aluminium.

4. Renew the O-rings (2) and assemble the heat

exchanger.
5. Tighten the M8 screws on the covers to
15 Nm (11 lb-ft).

1
2
2
3
2 5
1
2

4
364 555

1. Cover.
2. O-rings.
3. Spacer.
4. Heat exchanger housing.
5. Cooler core.

OPM 250 en-GB 55

© Scania CV AB 2022, Sweden
 Cooling system

Fitting the heat exchanger

IMPORTANT!

There is a risk that the joint will crack if these

mounting instructions are not followed.

Tightening torque
M6 10 Nm (7 lb-ft)
M8 26 Nm (19 lb-ft)
M10 50 Nm (37 lb-ft)

1. Fit the heat exchanger (4) in place against the

brackets. 2 4 3 2
1
2. Fit the sea water hose (3) between the heat
exchanger and charge air cooler (use vase-
line if necessary) and tighten the hose clamp.

IMPORTANT!
5
To prevent leakage, a hose clamp with a safety
ring should be used.

362 796
3. Fit the screws (5 off) securing the heat ex-
changer without tightening them.
4. Tighten the screws securing the heat ex-
changer bracket (5) in the cylinder block.
5. First tighten the screw on the charge air cool-
er bracket and then the 4 screws on the heat
exchanger bracket.
6. Fit the inlet and outlet coolant pipes and the
sea water pipe from the heat exchanger (2).
7. Fit the hose (1) between the heat exchanger
and the water-cooled exhaust pipe bend and
tighten the V-clamp.

OPM 250 en-GB 56

© Scania CV AB 2022, Sweden
 Cooling system

Fitting the charge air cooler

4 6 5
Tightening torque
M6 10 Nm (7 lb-ft)
M8 26 Nm (19 lb-ft)
M10 50 Nm (37 lb-ft)

1. Fit the charge air cooler (6) in place against

the brackets.
2. Fit the sea water hose (5) between the charge

362 795
air cooler and heat exchanger (use vaseline if
necessary) and tighten the hose clamp.
3. Fit the screws for the charge air cooler brack-
ets and tighten them.
4. Fit the water pipe (4) between the water
pump and the charge air cooler.

5. Fit the charge air pipe (3) between the intake

manifold and charge air cooler. To facilitate
fitting, lubricate the O-ring and the inside of
the connection in the charge air cooler with
vaseline. Press the charge air pipe straight to-
wards the charge air cooler while carefully
twisting the pipe to the right and left. Check
that the charge air pipe is properly fitted. 3 1
6. Fit the charge air pipe (2) between the charge
air cooler and turbocharger. To facilitate fit-
ting, lubricate the O-ring and the inside of the
connection in the charge air cooler with
vaseline. Press the charge air pipe straight to-
wards the charge air cooler while carefully
twisting the pipe to the right and left. Check
that the charge air pipe is properly fitted.
7. Fit the protective plate (1) to the charge air 2
cooler.
362 794

OPM 250 en-GB 57

© Scania CV AB 2022, Sweden
 Cooling system

Internal cleaning: Removing oil and 3. Fill the cooling system with clean hot water
grease in the cooling system mixed with detergent 2 479 017. Detergent
2 479 017 must make up 5-10% (depending
Environment on the degree of dirt) of the total coolant vol-
ume.
Use a suitable container. Used coolant must be If detergent 2 479 017 is not available, use a
disposed of as specified in national and interna- dishwashing detergent for domestic appli-
tional laws and regulations. ances that does not foam. Concentration 1%.
4. Warm up the engine for approximately 20-30
minutes. Remember to switch on the cab
Always fit a new thermostat and a new cover to heating system, if one is installed.
the expansion tank after cleaning, as the oil in the
cooling system destroys the seals. If the engine is 5. Drain the cooling system.
fitted with a coolant filter, also renew this filter. 6. Fill the cooling system with clean, hot water
and run the engine for about 20-30 minutes.
It may be necessary to wash it multiple times if
the cooling system is very dirty. One cause of 7. Repeat steps 3-6 if the cooling system is not
contamination can be that oil is lying on top of clean.
the coolant and collecting high up in the cooling 8. Drain the water from the cooling system.
system. If several rinses are needed, this is not 9. If necessary, clean the expansion tank by de-
necessarily because work has been carried out taching all hoses and rinsing and cleaning
incorrectly. Oil residues often need to be rinsed with a degreasing agent and a dish brush.
repeatedly from the expansion tank and the ex-
ternal heating system to be completely clean. Alternatively, dismantle the expansion tank
and clean it with water with 10% of detergent
Repeated washing is more effective and prefera- 2 479 017. Fill the expansion tank with the
ble to using higher concentrations of detergent mixture, shake it and drain it. Renew the cov-
(max. 10%) or cleaning for a longer period (max er of the expansion tank.
30 minutes). 10. Fit a new thermostat.
If only a small amount of dirt has collected in the 11. Fill the cooling system with new coolant as
expansion tank after cleaning, one extra rinse described in the next section.
and clean of the expansion tank only is usually 12. Check again whether further dirt or oil has
sufficient. There is no need to clean the whole collected in the expansion tank. Decide
cooling system again. whether it is necessary to carry out another
1. Run the engine until it has reached operating full cleaning or whether only rinsing or
temperature if possible and then drain the cleaning of the expansion tank will suffice.
cooling system following the previous de-
scription.
2. Remove the thermostat.

OPM 250 en-GB 58

© Scania CV AB 2022, Sweden
 Cooling system

Internal cleaning: Removing deposits

in the cooling system

Environment

Use a suitable container. Used coolant must be

disposed of as specified in national and interna-
tional laws and regulations.

1. Run the engine until it has reached operating

temperature if possible and then drain the
cooling system following the previous de-
scription.
2. Remove the thermostat.
3. Fill the cooling system with clean, hot water
mixed with radiator detergent which is based
on sulphamic acid and contains dispersing
agents. Follow the manufacturer's instruc-
tions for the concentration and cleaning peri-
od.
4. Run the engine for the specified time. Re-
member to switch on the cab heating system,
if one is installed.
5. Drain the cooling system.
6. Fill the cooling system with clean, hot water
and run the engine for about 20-30 minutes.
7. Drain the water from the cooling system.
8. Reinstall the thermostat.
9. Fill the cooling system with new coolant as
described in the next section.

OPM 250 en-GB 59

© Scania CV AB 2022, Sweden
 Cooling system

Filling coolant
This procedure applies when the cooling system
has been drained and needs to be filled with a
large amount of coolant.
Special tool

Number, designation Illustration

2 443 679, coolant
pump

360 625

WARNING!

Use protective gloves as coolant can cause irrita-

tion if it comes in contact with the skin. Hot cool-
ant can also cause scalding.

IMPORTANT!

Mix the coolant as specified in the section head-

ed Coolant.
It is not permissible to top up large amounts of
coolant via the expansion tank. Filling via the ex-
pansion tank leads to air pockets in the cooling
system which can lead to e.g. damage to the cool-
ant pump shaft seal.
Never fill a hot engine with a large amount of
cold coolant. There is a high risk of cracks form-
ing in the cylinder block and cylinder heads
Do not start the engine until the correct coolant
level has been obtained. If the engine is started
with engine coolant level low, it can damage the
coolant pump shaft seal, which leads to coolant
leakage.

OPM 250 en-GB 60

© Scania CV AB 2022, Sweden
 Cooling system

1. Open the expansion tank cap.

2. Connect the coolant pump to the filler nipple

in the cylinder block.
3. Connect the pump’s 2 cable terminals to the
battery’s negative and positive terminal.
Make sure that the filling starts. If the filling
does not start: Change the position of the ca-
ble terminals.
4. Start the engine and run it at idling for 15
minutes.

326 710
IMPORTANT!
Filler nipple in the cylinder block.
It is very important that the engine is idling. En-
gine overspeed could damage the coolant pump
shaft seal, which leads to coolant leakage.

5. Switch off the engine and fill with coolant to

the maximum level through the expansion
tank.
Air pockets may still be left in the cooling
system. These will disappear after the engine
has been operated for a period of time.
Therefore, the coolant may need topping up
at a later stage.

Finishing operations
1. Open the sea cock on the sea water inlet.
2. Start the engine and check that there are no
leaks.
3. Check the coolant level and top up if neces-
sary via the expansion tank.

OPM 250 en-GB 61

© Scania CV AB 2022, Sweden
 Fuel system

Fuel system Checking the fuel level

Check the fuel level and fill with fuel as neces-
Cleanliness requirements sary.
Note:
IMPORTANT!
If the fuel tank has been run dry or if the engine
The whole fuel system is very sensitive to dirt has not been used for a long time, bleed the fuel
and also very small particles. Foreign particles in system. See the section Venting the fuel system.
the system can cause serious malfunctions. It is
therefore very important that everything is as
clean as possible when work is carried out on the
fuel system. Clean the engine before carrying out
repair work. If possible, a hot clean should be
used.
It is strictly forbidden to carry out any machining
work or work with compressed air near an open
fuel system.
Be extra careful and always use clean, lint-free
and dust-free clothes and disposable gloves
when working on the fuel system. Scania recom-
mends using Tegera 848 gloves.
Clean tools before they are used and do not use
any worn or chrome-plated tools. Material and
flakes of chrome may come off.
Clean connections and the surrounding area be-
fore removal. When cleaning, cloths or paper
which shed fibres must not be used. Use clean
and lint free cloths, part number 588 879.
Plug or cover the connections during removal.
Also clean the connections before the compo-
nents are fitted. Place removed components on a
thoroughly cleaned, dust-free surface. Scania
recommends using a stainless steel bench top,
part number 2 403 296. Cover the components
with a lint-free cloth.

OPM 250 en-GB 62

© Scania CV AB 2022, Sweden
 Fuel system

Draining and renewing the

single water separating prefil-
ter (option)

IMPORTANT!

The sensor cable is sensitive. Handle it carefully.

Environment

Use a suitable container. The fuel collected must 4

be disposed of as specified in national and inter-
national laws and regulations.

Before starting work: Close the shut-off cock in

the fuel pipe and position a container under the 3
filter.
1
1. Detach the sensor cable from the contact
housing on the filter bracket. 2
2. Open the drain tap in the filter cover and let

336 101
the fluid run down into the container.
3. Unscrew the filter cover.
1. Sensor cable.
4. Unscrew the filter from the filter head.
2. Drain tap.
5. Discard the old filter and use a new filter.
3. Filter cover.
6. Lubricate the O-ring in the filter cover with
engine oil. 4. Filter.
7. Screw the filter cover onto the new filter by
hand. Make sure that the drain tap is fully
closed.
8. Lubricate the O-ring on the filter with engine
oil.
9. Fill the width of the filter with clean fuel.
10. Screw the filter into position until the O-ring
rests against the filter head. Tighten the filter
another 1/2 to 3/4 turn by hand.
11. Open the shut-off cock on the fuel pipe and
check that the fuel system is sealed.
12. Screw the sensor cable in the contact housing
onto the filter bracket.
13. Bleed the fuel system according to the in-
structions in the Venting the fuel systemsec-
tion.

OPM 250 en-GB 63

© Scania CV AB 2022, Sweden
 Fuel system

Draining the reversible water

separating prefilter (option)
During operation, the arrow on the rotary control
should point towards the filter being used.

Environment

Use a suitable container. The fuel collected must

be disposed of as specified in national and inter-
national laws and regulations.

1 2 3 4

376 032
1. Closed; neither filter is active.
2. Both filters are active.
3. Left-hand filter is active.
4. Right-hand filter is active.

1. Switch off the filter that needs renewing. The

arrow on the rotary control points towards
the filter in operation.

WARNING!

Be careful that the valve does not pass the closed

position when the engine is in operation. A
closed position can result in the engine stopping.

2. Remove the cover from the filter housing.

377 154

OPM 250 en-GB 64

© Scania CV AB 2022, Sweden
 Fuel system

3. Undo the drain plug.

4. Tighten the drain plug when all the water has

emptied.

377 156
5. Fill the filter housing with clean fuel.
6. Fit the cover. Tighten the cover screw by
hand.

377 154

OPM 250 en-GB 65

© Scania CV AB 2022, Sweden
 Fuel system

Renewing the reversible wa-

ter separating prefilter (op-
tion)
During operation, the arrow on the rotary control
should point towards the filter being used.

Environment

Use a suitable container. The fuel collected must

be disposed of as specified in national and inter-
national laws and regulations.

1. Switch off the filter that needs renewing.

During renewal, the arrow on the rotary con-
trol points towards the filter in operation.

WARNING!

Be careful that the valve does not pass the closed

position when the engine is in operation. A
closed position can result in the engine stopping.

2. Clean the filter housing externally with a

cleaning cloth.

3. Remove the cover from the filter housing.

377 154

OPM 250 en-GB 66

© Scania CV AB 2022, Sweden
 Fuel system

4. Remove the filter and fit the new filter.

377 155
5. Renew the O-rings in the cover.
6. Lubricate the O-rings with engine oil.

376 035

7. Fill the filter housing with clean fuel.

8. Fit the cover. Tighten the cover screw by
hand.
377 154

OPM 250 en-GB 67

© Scania CV AB 2022, Sweden
 Fuel system

Renewing the fuel filter

Environment

Use a suitable container. The fuel collected must

be disposed of as specified in national and inter-
national laws and regulations.

1. Clean the exterior of the filter with a damp

cloth.
2. Unscrew the filter.
3. Apply oil to the gasket on the new filter.
4. Screw the filter into place by hand until it
makes contact.
5. Screw a further half turn by hand.
6. Bleed the fuel system according to the in-

325 167
structions in the Venting the fuel systemsec-
tion.

OPM 250 en-GB 68

© Scania CV AB 2022, Sweden
 Fuel system

Renewing and venting com-

mutative fuel filters (option)
During operation, the rotary control should point
90° towards the filter being used.

Environment

Since the engine may be running during filter re-

newal, fuel spillages may occur. Use a suitable
container. Any fuel collected must be disposed
of as specified in national and international law.

1. Turn the rotary control 90° to the right so that

it points towards filter B. The fuel then flows
through the filter.
A B
2. Connect a clear plastic hose to the bleed nip-
ple positioned above filter A. Start by wiping
off the bleed nipple. Place the other end in a
container with a capacity of at least 3 litres
A B
(1 US gallon).
3. Open the bleed nipple on side A. The re-
maining pressure is released.

325 340
4. Clean the exterior of the filter with a cleaning
cloth. Rotary control for reversal of filter.
5. Unscrew the filter.
6. Apply oil to the gasket on the new filter.
7. Screw the fuel filter into place by hand until
it makes contact. Turn screw a further half
turn by hand.
8. Turn the rotary control 90° to the left so that
the rotary control points straight up. Both fil-
ters now run simultaneously.
9. When fuel without air bubbles comes out:
Close the bleed nipple. Because the engine is
running, a lot of fuel will come through the
hose.
10. Turn the rotary control 90° to the left so that
the rotary control points towards filter A. Fil-
ter B can now be renewed in the same way as
filter A.

OPM 250 en-GB 69

© Scania CV AB 2022, Sweden
 Fuel system

Venting the fuel system

Venting the fuel system using a suc-
tion tool
Tools

Designation Illustration
Suction tool for fuel sys-
tem

337 297

Note:
Scania recommends venting the fuel system us-
ing suction tools rather than with a hand pump.
This is a quicker and simpler method, which en-
sures a complete venting.

Environment

Use a suitable container. The fuel collected must

be disposed of as specified in national and inter-
national laws and regulations.

1. Attach a clear plastic hose to the bleed nipple

on the fuel manifold. Start by wiping off the
bleed nipple. Place the end of the plastic hose
in a container that holds at least 3 litres
(1 US gallon).
2. Connect the suction tool.
3. Connect compressed air to the suction tool.
Turn the rotary control to create a vacuum.
4. Open the bleed nipple.
5. Hold the suction tool straight and suction out
365 197

the fuel. Once the fuel coming out of the

plastic hose is free of air bubbles, then vent-
ing is complete. Fuel manifold bleed nipple.
6. Close the bleed nipple. Remove the plastic
hose and suction tool.
7. Start the engine and check that there are no
leaks.

OPM 250 en-GB 70

© Scania CV AB 2022, Sweden
 Fuel system

Venting the fuel system using a hand

pump

Environment

Use a suitable container. The fuel collected must

be disposed of as specified in national and inter-
national laws and regulations.

1. Attach a clear plastic hose to the bleed nipple 1

on the fuel manifold (1). Start by wiping off
the bleed nipple. Place the end of the plastic
hose in a container that holds at least 3 litres
(1 US gallon).
2. Open the bleed nipple and pump with the
hand pump (2) until fuel comes out of the
hose. If the fuel system is empty, it is neces-
sary to pump approximately 200 strokes in 2
order to draw up the fuel. Depending on the
installation, a significantly greater number of

362 800
pump strokes may be required before the fuel
comes out.
3. Pump until fuel without air bubbles comes Fuel manifold bleed nipple.
out, approximately 20 strokes.
4. Close the bleed nipple and remove the plastic
hose.
5. Pump approximately 20 strokes with the
hand pump until the overflow valve opens. A
hissing sound should be heard.
6. Start the engine. The engine should be easy
to start.
7. If the fuel filter has been renewed, check that
no fuel is leaking from the filter. Further
tighten the filter if it is leaking.

OPM 250 en-GB 71

© Scania CV AB 2022, Sweden
 Miscellaneous

Miscellaneous 2
5
4
Checking the drive belt

IMPORTANT!

Before starting, make a note of how the drive belt

is fitted. Refit the drive belt with the same direc- 3
tion of rotation as it had before removal.
2
1. Check the drive belt for cracks. Renew the
drive belt if deep cracks have formed.

339 160
1
Note:
Example of drive belt.
Small and shallow cracks are normal and form
after only a few hours of operation. They do not 1. Crankshaft.
mean that the drive belt needs to be renewed. If 2. Idler roller.
there are many deep cracks, or if parts of the
3. Alternator.
drive belt have started to come off, the drive belt
must then be renewed. 4. Belt tensioner.
5. Coolant pump.
106 229

381 640

Example of a minor crack in the drive belt. The drive The drive belt has deep cracks and must be renewed.
belt can be refitted.

OPM 250 en-GB 72

© Scania CV AB 2022, Sweden
 Miscellaneous

2. Check drive belt wear. Renew the drive belt

if it is too worn.

112 931

112 932
The drive belt is starting to become worn, but can be The belt is worn down to the cord. The drive belt
refitted. must be renewed.

Checking for leakage

IMPORTANT!

If serious leakage occurs, contact your nearest

workshop.

1. Start the engine.

2. Check for oil, coolant, fuel, air or exhaust
leakage.
3. Tighten or renew leaking connections.
Check the overflow holes which show
whether the O-rings between the cylinder
liners and crankcase are leaking.
4. Check whether the drain hole on the coolant
pump is blocked. If there is leakage, renew
the seal in the pump or the complete coolant
pump assembly.

OPM 250 en-GB 73

© Scania CV AB 2022, Sweden
 Miscellaneous

Checking and adjusting the

valve clearance and unit in-
jectors
Special tool

Number Designation Illustration

99 309 Turning tool for rotating the flywheel from below

142 238
2 402 509 Turning tool for rotating the flywheel from above

312 733
99 442 Setting tool

142 436
Other tools
Torque wrench, 0-50 Nm
Waterproof felt-tip pen
0.45 and 0.70 mm feeler gauges
Flash light
Mirror

WARNING!

Secure the starting device or remove a battery ca-

ble. If the engine starts unexpectedly, there is a
serious risk of injury.

IMPORTANT!

The engine must be cold when the work is car-

ried out.
Remember to remove the turning tool from the
flywheel following adjustment.

Note:
Carry out the working without pausing, so that
no step is overlooked.

OPM 250 en-GB 74

© Scania CV AB 2022, Sweden
 Miscellaneous

Carry out a check and adjustment of the valve

clearances and the unit injectors one more time
after the first 500 hours of operation. After this,
adjustment according to the regular interval
takes place, which is every 2,000 operational
hours.

The flywheel is engraved with the reference in-

formation UP TDC, DOWN TDC and the angle
indications listed in the table below. Depending

310 343
on the engine installation, this information is vis-
ible in one of the windows, either furthest up or
furthest down on the flywheel. See illustration. Upper and lower window to read the engraving on
the flywheel.

1
Workflow table 2
3
Adjust valves and unit injectors according to the 4
table below. Follow the respective column de-
pending on whether you are reading the engrav- 5
ing on the flywheel in the lower or the upper 6
window. Start adjustment at the top of the table.

362 827
Order of cylinders.

Reading in the low- Valve transition on Adjust valves on Adjust injector on Reading in the up-
er window cylinder cylinder cylinder per window
DOWN TDC 1 6 2 UP TDC
120/480 5 2 4 300/660
240/600 3 4 1 60/420
DOWN TDC 6 1 5 UP TDC
120/480 2 5 3 300/660
240/600 4 3 6 60/420

OPM 250 en-GB 75

© Scania CV AB 2022, Sweden
 Miscellaneous

Checking and adjusting the valve

clearance

Valve clearance, specifications

Intake valve 0.45 mm (0.018 in)
Exhaust valve 0.70 mm (0.028 in)

Tightening torque
Lock nut for valves 35 Nm (26 lb/ft)

1. Clean the rocker covers and the area around

them.
2. Remove the rocker covers.
3. Use the turning tool appropriate to the instal-
lation of the engine. Tool 99 309 is used to
rotate the flywheel from the underside of the
engine and tool 2 402 509 is used from the
top side.
4. Start adjusting one cylinder according to the
table. Rotate the flywheel until the correct
engraving can be read on the flywheel. It
may be necessary to rotate it more than 1 rev-
olution.
Rotate the flywheel in the rotational direc-
tion of the engine, which is clockwise
viewed from the front of the engine and anti-
clockwise viewed from the back of the en-
gine.
During a valve transition, the exhaust valve
(the long arm) is closing at the same time as 1
the intake valve is opening.
The UP TDC engraving on the flywheel is 2
now visible in the window furthest up on the
flywheel. The DOWN TDC engraving is vis-
ible in the lower window.
5. Read Workflow tableon the previous page to 3
see which valve to adjust.
6. Stick the feeler gauge under the pressure pad
of the rocker arm and check the valve clear-
ance. 4
7. If necessary, adjust the valve clearance by
a) loosening the lock nut on the end of the
382 364

rocker arm 5
b) adjusting the valve clearance with the ad-
justing screw 1. Adjusting screw.
c) tightening the lock nut.
2. Lock nut.
8. Mark the rocker arm with the felt-tip pen and
adjust the unit injector according to the next 3. Rocker arm.
section. Then continue on to the next cylin- 4. Valve bridge.
der according to the table.
5. Feeler gauge.

OPM 250 en-GB 76

© Scania CV AB 2022, Sweden
 Miscellaneous

Checking and adjusting the unit in-

jectors

Tightening torque
Lock nut for unit injec- 39 Nm (29 lb/ft)
tors

1. Read Workflow tableto see which injector to

adjust.
2. Fit the setting tool with the metal plate
around the unit injector.

382 761
The unit injector is correctly set when the 3 2
small piston (1) is level with the flat upper
surface of the tool. Use a finger to check.
You can feel very small differences. See also
the illustrations on the next page.
3. If necessary, adjust the unit injector by
a) loosening the lock nut (2)
b) adjusting the unit injector using the adjust-
ing screw (3)
c) tightening the lock nut.

IMPORTANT!

Remove the setting tool when the adjustment is

done.

4. Mark the injector with the felt-tip pen and

continue adjustment according to the table. 1
382 762

OPM 250 en-GB 77

© Scania CV AB 2022, Sweden
 Miscellaneous

144 015

143428
The setting tool piston is above or below the flat The setting tool piston is level with the flat upper
upper surface of the tool. Adjust the unit injector. surface of the tool. The unit injector is correctly
adjusted.

OPM 250 en-GB 78

© Scania CV AB 2022, Sweden
 Miscellaneous

Renewing the reductant fil-

ters
Note: 3
There is always 1 reductant pump with a filter in
the reductant tank (buffer tank). However, there
may be 1 additional reductant pump with a filter 4
between the main reductant tank and the buffer
tank.

5
1. Wipe clean around the filter housing to pre-
vent impurities from penetrating it. 1
2. Remove the filter housing. Use a 46 mm 6
socket.

WARNING!

There may be a lot of reductant in the filter hous-

ing and it may spill out. Wear protective gloves.
2

372 124
IMPORTANT!
1. Reductant pump.
Always rinse away reductant spillage on connec- 2. Filter.
tions and other parts with lukewarm water to pre-
vent corrosion. If reductant seeps into electrical 3. Sealing diaphragm.
connections or electrical cables, these must be 4. O-ring.
renewed.
5. Antifreeze
6. Filter housing.
3. Remove the sealing diaphragm.

4. Remove the old reductant filter and fit a new

one.
372 126

OPM 250 en-GB 79

© Scania CV AB 2022, Sweden
 Miscellaneous

5. If the frost protection device in the filter

housing comes loose, wipe both the frost
protection device and filter housing thor-
oughly so that they are completely dry before
they are assembled again.

372 130
6. Wipe the sealing diaphragm and fit it over
the filter.
Ensure that the edge of the diaphragm is sit-
ting in the groove.

372 127

7. Lubricate the sealing diaphragm and threads

with the accompanying spray.
372 128

OPM 250 en-GB 80

© Scania CV AB 2022, Sweden
 Miscellaneous

8. Renew the O-ring. Place the new O-ring in

the filter housing.

372 129
9. Refit the filter housing. Use a 46 mm socket.
Tighten to 80 Nm (59 lb-ft).

372 125

OPM 250 en-GB 81

© Scania CV AB 2022, Sweden
 Quality requirements for fuel

Quality requirements for Sulphur content

fuel IMPORTANT!
Quality requirements and testing standards for
the most important properties of different types The operator is responsible for using the correct
of fuel are described in the Workshop Manual. type of diesel to ensure that local laws are com-
This can be ordered from Scania dealers or di- plied with.
rectly from Scania.

Diesel Important to use low sulphur diesel

For engines with SCR systems certified in ac-
Properties cordance with IMO Tier III, it is important to use
The quality of the diesel is very important for the low-sulphur diesel, to ensure that the engine
operation and service life of the engine and the works correctly. If diesel with an excessive sul-
fuel system, and also for the engine performance. phur content is used, it can cause damage to the
engine and the SCR system.

REQUIREMENT!

The diesel should comply with the requirements

of European standard EN590.
However, Scania accepts larger tolerances of
certain properties. Please see the table below.

Properties Requirements
Viscosity at 40°C 1.4-4.5 cSt
(104°F)
Density at 15°C (59°F) 0.79-0.87 kg/dm3
Ignitability (CET rating) minimum 49
Lowest flashpoint 56°C (132°F)
Particulate contamina- Classification 22/20/17
tion level according to ISO 4406

OPM 250 en-GB 82

© Scania CV AB 2022, Sweden
 Quality requirements for fuel

Permitted sulphur content in diesel

Engine type Max. sulphur content Note

Engines without SCR sys- 4,000 ppm (0.4%) If the sulphur content is higher than 2,000 ppm, the
tem connected oil change intervals must be halved. A higher sul-
phur content than 4,000 ppm is not permitted, since
this will result in engine damage.
Engines with SCR system 500 ppm (0.05%) Scania strongly recommends that fuel with a max-
connected imum sulphur content of 50 ppm is used if the en-
gine is run with an SCR system connected for
longer periods of time.

Diesel with a higher sulphur content than

500 ppm for engines with SCR systems
If diesel with a higher sulphur content than per-
mitted is used on a short-term basis, this will not
cause permanent damage to the SCR catalytic
converter. The SCR catalytic converter may,
however, require diesel with a low sulphur con-
tent for some time after this to regain its normal
efficiency.
If diesel with an excessive sulphur content is
used for a longer period, there is a risk that the
SCR catalytic converter will not work properly.

Temperature dependence of diesel

IMPORTANT!

Mixing kerosene or other paraffins with the die-

sel is prohibited. The injectors may be damaged.
It is not permissible to mix petrol with diesel. In
the long term petrol can cause wear in the injec-
tors and engine.

OPM 250 en-GB 83

© Scania CV AB 2022, Sweden
 Quality requirements for fuel

At temperatures lower than those specified for

the diesel, paraffin wax may precipitate from the
diesel and block filters and pipes. The engine can
then lose power or stop.
The diesel is adapted for use in the specific cli-
mate of each country. If an engine is to be oper-
ated in a temperature zone with a temperature
lower than normal, first identify the temperature
properties of that particular diesel.

DMX and DMA diesel

IMPORTANT!

Use of DMX and DMA diesel is not permitted

for engines with SCR systems.

DMX and DMA diesels normally cause in-

creased wear on the injection system. As a result
of the high sulphur content in these types of die-
sel, the engine oil is also affected. The engine oil
must have as high a Total Base Number (TBN)
as possible.

REQUIREMENT!

For engines running on DMX and DMA diesels,

the engine oil must have a TBN of at least 12.

When the engine is taken into operation the en-

gine oil must be analysed every 50 hours to de-
termine the correct oil change interval. The oil
analysis must be carried out according to the in-
structions in the Oil analysissection in this Oper-
ator's manual.
Bear in mind that the emission limit for the cur-
rent engine type may limit the maximum permit-
ted sulphur content of the diesel.

OPM 250 en-GB 84

© Scania CV AB 2022, Sweden
 Quality requirements for fuel

Biodiesel (FAME) Maintenance interval

Use of biodiesel IMPORTANT!

IMPORTANT! Make sure that maintenance intervals are differ-

ent when operating on diesel or biodiesel.
For engines with SCR systems, a maximum of
10% mixture of biodiesel should be used.
With a greater mixture of biodiesel than 10%, the
renewal intervals for the following are halved:
Scania uses the term biodiesel to refer to a re- • Fuel filter.
newable diesel made from greases or oils and
methanol. The biodiesel should conform to the • Oil filter.
requirements of European standard EN 14214 or • Engine oil.
Brazilian standard ANP-45. For biodiesel in ac-
cordance with EN 14214 or ANP-45, the generic Storage of biodiesel
term FAME is frequently used.
Normal diesel in accordance with EN 590 can IMPORTANT!
contain up to 7% biodiesel from the diesel sup-
plier. There are grades of diesel that comply with Biodiesel must not be stored for more than 6
EN 590 but contain a higher mixture of biodies- months.
el.
Scania approves up to a 10% mixture of biodies- Biodiesel has a maximum storage life of
el for all engines. 6 months from the date of production to the ex-
piry date. The fuel is affected by light, tempera-
For PDE engines, Scania approves the use of up ture, water, etc. during storage, which affects the
to 100% biodiesel in accordance with EN 14214 fuel characteristics and durability.
or ANP-45. However, this does not apply to en-
gines with an SCR system, for which only a 10% Biodiesel also has lower stability against oxida-
mixture is permitted. tion than diesel. This may result in a thickening
of the fuel and clogging of parts of the fuel sys-
The viscosity grade of the engine oil should be tem, e.g. the fuel filter. Bacterial growth can oc-
xW-40. xW-30 grade oils are unsuitable due to cur when biodiesel is stored in a tank in
the fuel dilution effect. unfavourable conditions. Avoid storage in bar-
Check the engine oil level regularly. If the oil rels or auxiliary tanks, except when fuel turnover
level exceeds the maximum level, the oil must be rates are high. Check tank cleanliness whenever
changed. Check the cause if the oil level exceeds refuelling takes place.
the maximum level and contact your nearest Sca- If the engine has been refuelled with biodiesel,
nia workshop if you suspect a fault. and is stationary for a long period, condensation
water can form in the fuel tank resulting in bac-
terial growth.
See also the section Preservative fuel.

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 Quality requirements for fuel

HVO
HVO is a synthetic diesel which is manufactured
through the hydrogenation of plants and animal
fats. To the user, HVO is reminiscent of diesel in
accordance with EN590, apart from HVO having
a somewhat lower density.
Scania approves the use of up to 100% HVO for
all engines in accordance with the European
standard EN 15940.

GTL
GTL is a synthetic fuel that is often refined from
natural gas. To the user, GTL is reminiscent of
diesel in accordance with EN590, apart from
GTL having a somewhat lower density and less
odour.
Scania approves the use of up to 100% GTL in
accordance with the European standard EN
15940.

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© Scania CV AB 2022, Sweden
 Reductant with SCR

Reductant with SCR

IMPORTANT!

IMPORTANT! The use of reductant that has aged can damage

important components in the SCR system. The
The operator is responsible for using the correct ageing process is accelerated by a high ambient
type of reductant to ensure that local laws are temperature.
complied with.
The reductant should be handled in accordance
with the following shelf life recommendation.
Reductant is a solution consisting of urea and
water and is usually called AdBlue®, DEF,
ARLA 32 or AUS 32/AUS 40 depending on the
market. If the engine is fitted with an SCR sys- Constant ambient Minimum shelf life in
tem, the reductant is added to the exhaust gases storage temperature in months according to
upstream of the catalytic converter. This reduces °C. ISO 22241-3
nitrogen oxide emissions. The SCR system can ≤10 36
be used with either 32.5% or 40% by weight of ≤25 18
urea.
≤30 12
Reductant with 32.5% by weight of urea freezes ≤35 6
at approx. -11°C (12°F). With 40% by weight of
urea freezes at 0°C (32°F). When the solution >35 Significant loss of ser-
freezes, ice and urea always maintain the same vice life: check each kit
concentration. Always store the reductant at a before use
temperature of between 0°C and 30°C (32 to
86°F). The risk of crystal formation increases with low
outdoor temperatures. When the outdoor temper-
Reductant is normally colourless if no dye has ature is below -20°C (-4°F), reductant dosing is
been added. It is not harmful to the skin. Nor is it switched off to avoid the risk of crystals forming
toxic in small quantities, but it tastes very un- in the SCR system.
pleasant.
Reductant is highly corrosive. Therefore, rinse
any reductant spillage from connections and oth-
er details using lukewarm water. Water works
very well for cleaning purposes. Please use hot
water. If reductant seeps into electrical connec-
tions or electrical cables, these must be renewed.
Reductant has a low surface tension and rapidly
spreads over large areas, which then become
very slippery.
Reductant can dry out and form white or greyish
brown crystals or deposits that can be washed
away with warm water.

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© Scania CV AB 2022, Sweden
 Reductant with SCR

32.5% by weight of urea

REQUIREMENT!

If the SCR system should be operated with

32.5% by weight of urea, the reductant should be
specified in accordance with ISO 22241 in order
to comply with the emission requirements set by
the public authorities.

Rec. % by weight of Limit values according

urea to ISO 22241
32.5% 31.8-33.2%

40% by weight of urea

REQUIREMENT!

If the SCR system should be operated with 40%

by weight of urea, the reductant should be speci-
fied in accordance with ISO 18611 in order to
comply with the emission requirements set by
the public authorities.

Rec. % by weight of Limit values according

urea to ISO 18611
40% 39-41%

OPM 250 en-GB 88

© Scania CV AB 2022, Sweden
 Preparing the engine for storage

Preparing the engine for In order to minimise the growth of micro-organ-

storage
isms, preservative fuel should contain the fol-
lowing additives. The additives should be
selected and added by the fuel supplier.
If the engine is not being used for an extended
period its cooling system, fuel system and com- Preservative fuel should comply with the follow-
bustion chamber and outside must be protected ing requirements:
against rust.
• 0% biodiesel.
The engine can normally stand idle for up to
• Max. sulphur content 50 ppm.
6 months without needing preparation. For
longer periods of than 6 months, however, the • Max. water content 200 ppm.
measures in the following sections must be tak- • The fuel must contain additives to stop the
en. These measures provide protection for ap- growth of micro-organisms.
proximately 3 years, then the preparing
procedure must be repeated. An alternative to Reductant
preparing the engine for long-term storage is to
start the engine and warm it up every 6 months. Over time, the water in the reductant evaporates
and there is only urea left. The reductant then be-
Preparation means that the following measures gins to crystallise. The reductant tank is not sen-
are taken: sitive to crystals, but the ball valves in the
reductant pump may become clogged. However,
• The engine is cleaned thoroughly. note that corrosion or other particles can also
• Run the engine for a specific period using clog the ball valves.
special preservative fuel, oil and coolant.
All connections in the SCR system must be
• Otherwise prepare the engine for storage (fil- sealed before storage, so that the water in the re-
ter renewal, lubrication, etc.). ductant does not evaporate. The SCR system
should then be stored in a cool location and not
Preservative products in direct sunlight. If the reductant tank has never
been filled with reductant, it can be stored when
Preservative oil empty for an unlimited time.
Use a normal engine oil that meets the require- When the engine is taken into operation again,
ments in the Oil gradesection. all reductant must be drained and changed. If old
reductant is used, the SCR system will not work.
Preservative coolant
Use coolant containing 50% by volume of gly-
col. Example: BASF MPG Glysacorr P113 and
Valvoline Zerex P113 FP.

WARNING!

Ethylene glycol can be fatal if ingested and can

cause skin irritation and eye damage.

Preservative fuel
Preservative fuel must not contain biodiesel.
Even small amounts of 5-10% biodiesel can have
adverse effects on the engine when in longterm
storage.
Long-term storage of diesel, where the diesel
comes into contact with water, may lead to the
growth of micro organisms (bacteria and fun-
gus).

OPM 250 en-GB 89

© Scania CV AB 2022, Sweden
 Preparing the engine for storage

Preparations for storage 16. Renew the filter element in the air cleaner.
17. Cover the air intake and exhaust pipe.
Environment 18. Spray the outside of the alternator and starter
motor with water-repellent anti-corrosive
Use a suitable container. Used oil, coolant and oil: CRC 226, LPS1 or equivalent.
reductant must be disposed of as specified in na- 19. Spray the outside of smooth engine parts,
tional and international laws and regulations. first with penetrating preservative oil such as
Dinitrol 25B and then with Dinitrol 112 or
equivalent.
Note: 20. Clearly mark the engine with the storage
Do not remove the injectors. preparation date, and state that the engine
must not be started or cranked.
1. Remove plugs and tape from the coolant
connections, air intake and exhaust pipe.
2. Drain the oil.
3. Renew the oil filter and fuel filter.
4. Clean the centrifugal oil cleaner.
5. Fill with engine oil to the minimum level on
the oil dipstick.
6. Drain and flush the cooling system of any old
coolant.
7. Top up with preservative coolant.
8. Mix preservative fuel in a can. Detach the
fuel pipe at the feed pump suction line and
connect a hose from the can.
9. Detach the fuel pipe at the overflow valve
and connect a return hose to a separate can.
10. Connect and bleed the fuel system.
11. Start the engine and run it at about 1,100 rpm
for 20 minutes.
If the engine has an SCR system and the re-
ductant tank is empty, it is possible to run the
engine for this limited time without damag-
ing the components of the SCR system. This
applies if the engine is run without load.
12. If the engine has an SCR system the reduct-
ant tank is full of reductant: Seal all connec-
tions in the SCR system.
13. Remove the rocker covers and lubricate the
valve mechanisms with pushrods and the
valve tappets, as well as the injector mecha-
nism, using a liberal amount of preservative
oil. Refit the rocker covers.
14. Drain the coolant if the engine is not to be
stored with coolant in the system. Plug and
tape all coolant connections if the engine is
to be stored without coolant in the cooling
system.
15. Remove the sea water pump impeller if the
engine has a sea water pump.

OPM 250 en-GB 90

© Scania CV AB 2022, Sweden
 Preparing the engine for storage

Batteries

WARNING!

Wear protective gloves and protective goggles

when charging and handling batteries. The bat-
teries contain a highly corrosive acid.

Remove the batteries and trickle charge them at

the battery charging station. This does not apply
to batteries specified as maintenance-free by the
manufacturer.
The same applies to short-term storage, even if
the engine has not been prepared for storage as
above.

Storage
After the preparation, the engine should be
stored indoors in a dry location at room temper-
ature. The engine must be packed in packaging
made of VCI plastic to protect against dust, dirt
and moisture.

When the engine is to be taken into

operation again
1. If the engine is equipped with an SCR sys-
tem: Drain and clean the reductant tank and
fill with new reductant.
2. Remove plugs and tape from the coolant
connections, air intake and exhaust pipe.
3. Fill the cooling system with coolant.
4. Fit the sea water pump impeller if the engine
has a sea water pump.
5. Drain the preservative oil.
6. Renew the oil filter and fuel filter.
7. Fill with new engine oil.
8. Remove the rocker covers and lubricate the
valve mechanisms with pushrods and the
valve tappets, as well as the injector mecha-
nism, using a liberal amount of oil. Refit the
rocker covers.
9. Drain the preservative fuel from the fuel
manifold.
10. Connect and bleed the fuel system.
11. Wash off any preservative oil on the outside
using white spirit.

OPM 250 en-GB 91

© Scania CV AB 2022, Sweden
 Technical data

Technical data
General data

Number of cylinders and configuration 6, straight

Working principle 4-stroke engine
Cylinder diameter (mm/in) 130/5.12
Piston stroke (mm/in) 160/6.3
Displacement (dm3/in3) 12.7/775.0
Firing order 1-5-3-6-2-4
Compression ratio
DI13 070/071/072/073/074/075/077/078M 16.3:1
DI13 080/081/082/083/084/085/086/091/092M 17.3:1
Engine direction of rotation viewed from rear Anti-clockwise
Fan direction of rotation viewed from front Clockwise
Cooling Coolant
Valve clearances, cold engine
Intake valve (mm/in) 0.45/0.018
Exhaust valve (mm/in) 0.70/0.028
Number of teeth on the flywheel 158
Low idling speed (rpm) 500-1,050
Maximum full-load speed (rpm) 1,800/2,100/2,300
Fuel Diesel
Approximate weight, without coolant and oil (kg/lb)
With heat exchanger 1,285/2,833
With keel cooling 1,180/2,601
Without heat exchanger and liquid-cooled charge air cooler 1,123/2,476

OPM 250 en-GB 92

© Scania CV AB 2022, Sweden
 Technical data

Lubrication system

Oil volume See Maintenance

Oil cleaning Centrifugal oil cleaning
Oil cooler Coolant cooled, full flow
Oil filter Paper filter, full flow
Interval between oil changes (h) 500
Oil grade
Engines run on low-sulphur fuel ACEA E5 or E7
Engines not run on low-sulphur fuel Total Base Number (TBN) >
12 (ASTM D2896)
Oil pressure (bar/psi)
Normal with the engine at operating temperature, operating speed 3-6/43.5-87
Minimum permitted at idling speed 0.7/10.2
Crankcase pressure with closed crankcase ventilation (mbar/psi) -5.4 to 2.0/-0.08 to 0.03

Intake system

Permissible pressure drop in the intake system with cleaned or new filter 30/0.44
(mbar/psi)
Permissible pressure drop in the intake system with blocked (dirty) filter 65/0.94
(mbar/psi)

Cooling system

Coolant volume (dm3/US gallons)

With heat exchanger 40/10.6
With keel cooling, 1 coolant circuit (only engine) 24/6.3
With keel cooling, 2 coolant circuits (only engine) 20/5.3
Without heat exchanger and liquid-cooled charge air cooler (only en- 20/5.3
gine)
Coolant temperature (°C/°F)
With heat exchanger 90-95/194-203
With keel cooling 83-88/181-190
Without heat exchanger and liquid-cooled charge air cooler 83-88/181-190
Number of thermostats 1
Thermostat opening temperature (°C/°F)
With heat exchanger 80/176 and 87/187
With keel cooling 75/167
Without heat exchanger and liquid-cooled charge air cooler 75/167

OPM 250 en-GB 93

© Scania CV AB 2022, Sweden
 Technical data

Injection system

Type PDE (unit injector)

Steering system EMS
Fuel filter Paper filter from Scania
Fuel filter with water separator Paper filter from Scania

Electrical system

Type 2-pin, 24 V, DC
Starter motor, standard equipment 2-pin, 24 V, 7.0 kW
Alternator, standard equipment 2-pin, 28 V, 100 A

Material content
The values indicate an approximate percentage
for the different materials that make up the en-
gine.

Materials % by weight
Steel 40
Cast iron (30% recycled) 46
Aluminium 8
Copper, bronze, brass, zinc 1.5
Lead <0.1
Plastic <1
Rubber <1
Glass 0
Paints <1
Oils and greases 3

Recycling

Type of material Recommended recycling method

Metal Recycling.
Plastic Recycling, incineration.
Chemicals and oils Re-use if possible; otherwise hand in to an authorised waste disposal contrac-
tor.
Fuel filter and oil filter Hand in to an authorised waste disposal contractor.
Colour No known recycling methods.
Electronics Hand in to an authorised waste disposal contractor.

OPM 250 en-GB 94

© Scania CV AB 2022, Sweden
 Scania Assistance

Scania Assistance
Wherever you are, you can always get assistance
from Scania's service organisation, Scania Assis-
tance, 24 hours a day, every day of the year.
Always call the contact for your country.

Country Tel Country Tel

Austria +43 1 256 44 11 Latvia +371 29 44 24 24
America +1 (0) 800 272 2642 Lithuania +46 8 52 24 24 24
America 1 800 272 2642 Luxembourg +32 2 264 00 00
Argentina 800,999,722,642 Malaysia 1800 08 8500
Australia +611300722642 Malaysia +6035590907
Belgium +32 2 264 00 00 Mexico +543327451092
Botswana +267 72 102 591 Morocco +3222640000
Brazil +8000194224 Namibia +264634461352
Bulgaria +359 88 666 0001 Netherlands +31 76 52 54 111
Chile 188,800,722,642 Norway +47 223 217 00
Colombia +1800184548 Peru 0800-51-727
Czech Republic +420,225,020,225 Peru (01)512-1877
Denmark +45 333 270 44 Poland +48 22 331 22 33
Estonia Tallinn: +372 5153 388 Portugal +34 91 678 9247
Estonia Tartu: +372 5126 333 Romania +40 723 27 27 26
Estonia Pämu: +372 5071 477 Russia +7(495) 925 77 75
Estonia Rakvere: +372 5074 655 Singapore +6565917180
Finland +358 10 555 24 Slovakia +421,903,722,048
France +33 2 414 132 32 South Africa 0 800 005 798
Germany +49 261 887 8888 South Africa +27 11 226 5005
Great Britain 0 800 800 660 Spain +34 91 678 80 58
Great Britain +441274301260 Sweden +46 42 100 100
Hungary +36,209,727,197 Switzerland +41 800 55 24 00
Ireland +353 71 963 4000 Thailand +66819397525
Italy +39046 1996222 Thailand +1800 019 88
Latvia +46 8 52 24 24 24 Uruguay 0 800 835 1

Other countries: +46 8 52 24 24 24

Note:
Calls will be recorded for training purposes.

OPM 250 en-GB 95

© Scania CV AB 2022, Sweden
 Tightening torque for screw joint

Tightening torque for screw

joint
Screws and nuts
Hexagon screws, hexagon socket
screws, Torx screws, hexagon nuts
Metric thread. Strength class 8.8/8.

Tightening torque
Thread
Nm Lb-ft
M4 2.9 21
M5 6 4
M6 9.5 7
M8 24 18
M10 47 35
M12 84 62
M14 135 100
M16 210 155
M18 290 214
M20 420 310
M22 580 428
M24 730 538

Flange screws with hexagonal head

and hexagonal flange nuts
Metric thread. Strength class 8.8/8.

Tightening torque
Thread
Nm Lb-ft
M5 6.7 5
M6 10.2 8
M8 26 19
M10 50 37
M12 92 38
M14 149 110
M16 184 136

OPM 250 en-GB 96

© Scania CV AB 2022, Sweden
 Tightening torque for screw joint

Hose clamps
Specifications in the tables show tightening
torque when tightening by hand.

A = width Tightening torque

(mm) Nm Lb-ft
7.5-9 1.5 1
D
12 5 4

327 162
The maximum tightening torque for a new unfitted
hose clamp is 1 Nm (0.7 lb-ft).

A = width Tightening torque

(mm) Nm Lb-ft
20 10 7
25 20 15

326 615

A
326 616

OPM 250 en-GB 97

© Scania CV AB 2022, Sweden