Scania DI09 PDE User manual

en-GB 3 169 156
Issue 13.0
Operator's manual
DI09 PDE Marine engine
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.
For this reason, always secure the starting device or disconnect a battery cable before working on the engine.
This is especially important 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.

OPM 150 en-GB 2
© Scania CV AB 2023, Sweden
Start of warranty . . . . . . . . . . . . . . . . . . . . . . . . 3
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Certification . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Power classes . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Environment and safety . . . . . . . . . . . . . . . . . . 6
Environmental liability . . . . . . . . . . . . . . . . . . 6
Information on parts with particularly hazardous
substances . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Warnings and advisories . . . . . . . . . . . . . . . . . 8
Engine data plate . . . . . . . . . . . . . . . . . . . . . . . 13
Component identification . . . . . . . . . . . . . . . . 14
Starting and driving . . . . . . . . . . . . . . . . . . . . 15
Checks before first start . . . . . . . . . . . . . . . . 15
checks before driving . . . . . . . . . . . . . . . . . . 15
Starting the engine . . . . . . . . . . . . . . . . . . . . 15
Driving . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Engine shutdown. . . . . . . . . . . . . . . . . . . . . . 18
Checks after driving . . . . . . . . . . . . . . . . . . . 18
Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Maintenance interval. . . . . . . . . . . . . . . . . . . 20
Lubrication system . . . . . . . . . . . . . . . . . . . . . 21
Oil grade . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Oil analysis . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Checking the oil level . . . . . . . . . . . . . . . . . . 24
Maximum angles of inclination during operation
24
Changing the oil . . . . . . . . . . . . . . . . . . . . . . 25
Cleaning the centrifugal oil cleaner . . . . . . . 26
Operational testing of the centrifugal oil cleaner
30
Renewing the oil filter. . . . . . . . . . . . . . . . . . 31
Renewing the reversible oil filter . . . . . . . . . 31
Air cleaner . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Reading the vacuum indicator. . . . . . . . . . . . 32
Renewing the air cleaner filter element and safe-
ty cartridge . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Cooling system . . . . . . . . . . . . . . . . . . . . . . . . . 34
Coolant . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Checking the coolant level . . . . . . . . . . . . . . 39
Checking the coolant's antifreeze and corrosion
protection . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
Checking the sacrificial anodes. . . . . . . . . . . 41
Checking the sea water pump impeller . . . . . 42
Changing the coolant and cleaning the cooling
system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
Fuel system . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
Cleanliness requirements . . . . . . . . . . . . . . . 53
Checking the fuel level . . . . . . . . . . . . . . . . . 53
Draining and renewing the single water separat-
ing prefilter (option) . . . . . . . . . . . . . . . . . . . 54
Draining the reversible water separating prefilter
(option) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
Renewing the reversible water separating prefil-
ter (option) . . . . . . . . . . . . . . . . . . . . . . . . . . .57
Renewing the fuel filter . . . . . . . . . . . . . . . . .59
Renewing and venting reversible fuel filters (op-
tion) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .60
Bleeding the fuel system . . . . . . . . . . . . . . . .61
Other . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .63
Checking the drive belt . . . . . . . . . . . . . . . . .63
Checking for leakage . . . . . . . . . . . . . . . . . . .64
Checking and adjusting the valve clearance and
unit injectors. . . . . . . . . . . . . . . . . . . . . . . . . .65
Quality requirements for fuel . . . . . . . . . . . . .70
Diesel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .70
Biodiesel (FAME) . . . . . . . . . . . . . . . . . . . . .72
Renewable diesel (HVO) . . . . . . . . . . . . . . . .73
Gas-to-liquids (GTL) . . . . . . . . . . . . . . . . . . .73
Preparing the engine for storage . . . . . . . . . . .74
Preservative products . . . . . . . . . . . . . . . . . . .74
Preparations for storage . . . . . . . . . . . . . . . . .75
Technical data . . . . . . . . . . . . . . . . . . . . . . . . . .77
General data . . . . . . . . . . . . . . . . . . . . . . . . . .77
Lubrication system . . . . . . . . . . . . . . . . . . . . .77
Intake system . . . . . . . . . . . . . . . . . . . . . . . . .78
Cooling system. . . . . . . . . . . . . . . . . . . . . . . .78
Fuel system. . . . . . . . . . . . . . . . . . . . . . . . . . .78
Electrical system . . . . . . . . . . . . . . . . . . . . . .78
Material content . . . . . . . . . . . . . . . . . . . . . . .79
Tightening torque for screw joint . . . . . . . . . .80
Screws and nuts . . . . . . . . . . . . . . . . . . . . . . .80
Hose clamps . . . . . . . . . . . . . . . . . . . . . . . . . .81
Scania Assistance . . . . . . . . . . . . . . . . . . . . . . .82

Start of warranty
OPM 150 en-GB 3
© Scania CV AB 2023, Sweden
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.
Country
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
Postal town
State/County

OPM 150 en-GB 4
© Scania CV AB 2023, Sweden
Introduction
Introduction
This Operator's manual describes the operation
and maintenance of Scania marine engines.
The engines are direct-injection, liquid-cooled,
four-stroke diesel engines with turbochargers.
The engines are available with different output
and engine speed settings. The engine power of
the engine ordered is indicated on the engine data
plate.
Note:
Only standard components are described in the
operator's manual. Information about special
equipment is contained in instructions from the
various manufacturers.
To ensure the maximum performance and the
longest service life for the engine remember the
following:
• Read through the Operator's manual before
starting to use the engine. Even regular users
of Scania engines will get new information
from the Operator's manual.
• Always follow the maintenance instructions.
• Read the section on safety carefully.
• Get to know your engine so that you know
what it can do and how it works.
• Always contact an authorised Scania work-
shop for maintenance and repairs.
The information in this Operator's manual was
correct at the time of going to press. Scania re-
serves the right to make alterations without prior
notice.
Note:
Always use Scania spare parts for maintenance
and repair.
Certification
IMPORTANT!
For Scania to guarantee that the engine corre-
sponds to its certified configuration, and take re-
sponsibility for any damage and injuries that
occur, maintenance must be carried out in ac-
cordance with the instructions in this Operator's
manual.
An emissions certified engine fulfils the emis-
sions requirements for a particular range of ap-
plication.
On each emissions certified engine there is a la-
bel which shows which requirements the engine
fulfils. Scania guarantees that each such engine
fulfils the emissions requirements for the range
of application for which it is certified.
The following are required for the certified en-
gine to fulfil the emissions requirements once it
has been taken into service:
• Maintenance is to be carried out in accord-
ance with the instructions in this Operator's
manual.
• Maintenance and repairs of injection equip-
ment are to be carried out by an authorised
Scania workshop.
• The engine may only be modified with equip-
ment that has been approved by Scania.
• Seals may be broken and setting data edited
only once approval has been granted by Sca-
nia. Modifications may be made by author-
ised personnel only.
• Modifications affecting the exhaust and in-
take systems must be approved by Scania.
Otherwise, the instructions in the Operator's
manual for the running and maintenance of the
engine shall apply. Follow the safety precautions
on the following pages.

Power classes
OPM 150 en-GB 5
© Scania CV AB 2023, Sweden
Power classes
Scania supplies engines in 3 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 accumulated load factor must not exceed 80% of the rated power. Unlimited number of
operational 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:
Motor type:
Engine power: kW at rpm
ICFN, Continuous service
IFN, Intermittent service
PRP, Prime power

OPM 150 en-GB 6
© Scania CV AB 2023, Sweden
Environment and safety
Environment and safety
Environmental liability
Scania develops and produces engines that are as
environmentally-friendly as possible. Scania has
made major investments in the reduction of
harmful exhaust emissions in order to fulfil the
environmental requirements in force in almost
every market.
At the same time, we have been able to maintain
a high level of performance quality and operat-
ing economy for Scania engines. To maintain
these throughout the entire service life of the en-
gine, it is important for the user to follow the in-
structions on running, maintenance and fuel,
lubricating oil and coolant as outlined in the Op-
erator's manual.
Other green initiatives taken include ensuring
that, following maintenance and repair, waste
that is harmful to the environment (for example
oil, fuel, coolant, filters and batteries) is disposed
of accordance with the applicable environmental
requirements.
Information on parts with par-
ticularly hazardous substanc-
es
Note:
A number of component parts on the engine con-
tain materials with particularly hazardous sub-
stances.
The substances have properties that can have a
serious and lasting effect on human health and
the environment.
If a part or component parts contain more than
0.1% by weight of a substance listed on the
REACH candidate list, the supplier must provide
information about the substance.
The requirement is defined in Article 33 of the
REACH Regulation (EC 1907/2006) and applies
within the EU, Liechtenstein, Norway and Ice-
land.
https://echa.europa.eu/candidate-list-table.
A list of engine parts containing substances in
the candidate list is provided by Scania.
https://sure.scania.com/reach.
According to Article 9 of the EU Waste Frame-
work Directive ((EU) 2018/851), manufacturers
of parts containing more than 0.1% by weight of
a particular hazardous substance must communi-
cate this to the EU Chemicals Agency (ECHA).
Scania supplies individual notification numbers
in SCIP for affected vehicles.
https://sure.scania.com/
The notification number can be used to search
the ECHA SCIP database.
https://echa.europa.eu/scip-database
Safety
The following pages contain a summary of the
safety precautions to be complied with when op-
erating and maintaining Scania engines. The
equivalent text can also be found under the rele-
vant maintenance item.
To prevent damage to the engine and to ensure
that it runs optimally, follow the instructions in
the warnings and advisories.
If the instructions are not followed, the warranty
can cease to apply.

Environment and safety
OPM 150 en-GB 7
© Scania CV AB 2023, Sweden
Different types of advisory
Warning!
All advisories preceded by Warning! are very
important. They warn of serious faults and incor-
rect operation that could lead to personal injury.
Example:
WARNING!
Block the starting device when working on the
engine. If the engine starts unexpectedly, there is
a serious risk of injury.
Important!
Advisories preceded by Important! warn of
faults and incorrect operation that could lead to
equipment being damaged. Example:
IMPORTANT!
An excessive coolant temperature can cause en-
gine damage.
Please note:
Advisories preceded by Note: refer to informa-
tion important to ensure the best possible opera-
tion and functionality. Example:
Note:
Leave the engine off for at least 7 minutes before
you check the oil level.

OPM 150 en-GB 8
© Scania CV AB 2023, Sweden
Environment and safety
Environment
This Operator’s manual contains specially high-
lighted text with instructions to help protect the
environment during maintenance. Example:
Environment
Use a suitable container. The fuel collected must
be disposed of as specified in national and inter-
national laws and regulations.
Warnings and advisories
Smoking
WARNING!
Smoking is prohibited
• in the vicinity of flammable or explosive ma-
terial, e.g. fuel, oils, batteries, chemicals
• when refuelling and in the vicinity of the fill-
ing station
• when working on the fuel system
Safety precautions for running the
engine
Daily maintenance
Always carry out a visual inspection of the en-
gine and engine compartment before starting the
engine or when the engine has been switched off
after operation.
This inspection should be done to detect fuel, oil
or coolant leaks, or anything else that may re-
quire corrective action.
Fuel
WARNING!
The wrong fuel grade can cause breakdowns or
stoppages by causing the injection system to
malfunction. This can cause damage to the en-
gine and, possibly, personal injury.
REQUIREMENT!
Use only fuel which fulfils the requirements in
the Quality requirements for fuel section.
Refuelling
WARNING!
During refuelling there is a risk of fire and explo-
sion. The engine must be switched off and smok-
ing is prohibited.
Never overfill the tank as the fuel needs space to
expand. Make sure that the filler cap is fully
closed.
Hazardous gases
WARNING!
Only start the engine in a well-ventilated area.
The exhaust gases contain carbon monoxide and
nitrogen oxides, which are toxic.
When the engine is run in an enclosed space,
there must be an effective device to extract ex-
haust gases and crankcase gases.

OPM 150 en-GB 9
© Scania CV AB 2023, Sweden
Environment and safety
Starter lock
IMPORTANT!
If the instrument panel is not fitted with a starter
lock, the engine compartment should be locked
to prevent unauthorised personnel from starting
the engine. Alternatively, a lockable master
switch or battery master switch can be used.
Starter gas
WARNING!
Never use starter gas or similar agents to help
start the engine. This can cause an explosion in
the intake manifold and possible injury.
Driving
WARNING!
The engine must not be run in environments
where there is a risk of explosion, as all of the
electrical or mechanical components can gener-
ate sparks.
Approaching a running engine always poses a
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.
Safety precautions for handling ma-
terials
Fuel and lubricating oil
WARNING!
All fuels and lubricants as well as many chemi-
cals are flammable. Always follow the instruc-
tions on the relevant packaging.
The work must be carried out on a cold engine.
Fuel leaks and spillages on hot surfaces can
cause fire.
Store used rags and other flammable materials
safely so as to avoid spontaneous combustion.
Batteries
WARNING!
The batteries contain and form oxyhydrogen gas,
particularly during charging. Oxyhydrogen gas
is flammable and highly explosive.
There must be no smoking, naked flames or
sparks near the batteries or the battery compart-
ment. Incorrect connection of a battery cable or
jump lead can cause a spark, which can cause the
battery to explode.

OPM 150 en-GB 10
© Scania CV AB 2023, Sweden
Environment and safety
Chemicals
WARNING!
Most chemicals such as glycol, anti-corrosive
agents, preservative oils and degreasing agents,
are hazardous to health. Some chemicals, such as
preservative oil, are also flammable. Always fol-
low the safety precautions on the packaging.
Store chemicals and other materials which are
hazardous to health in approved and clearly
marked containers, where they are inaccessible
to unauthorised persons.
Environment
Excess and used chemicals must be disposed of
as specified in national and international laws
and regulations.
Safety precautions for maintenance
Switch off the engine
WARNING!
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
injury.
Always switch off the engine before carrying out
maintenance, unless otherwise indicated.
Make it impossible to start the engine: Remove
any starter key, or cut the power using the main
power switch or battery master switch and lock
them.
Fix a warning plate somewhere appropriate,
showing that work is being carried out on the en-
gine.
Hot surfaces and fluids
WARNING!
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.

OPM 150 en-GB 11
© Scania CV AB 2023, Sweden
Environment and safety
Lubrication system
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 pressure in the lubri-
cation system before starting work on it.
Make sure that the oil filler cover is fitted when
starting and driving in order to avoid oil escap-
ing.
Environment
Used oil must be disposed of as specified in na-
tional and international laws and regulations.
Cooling system
WARNING!
Never open the coolant filler cap when the en-
gine 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 pressure before removing
the cap. Wear protective gloves as the coolant is
still very hot.
Avoid skin contact with coolant as this may
cause irritation to the skin. Wear eye protection
and gloves when handling coolant.
Ethylene glycol can be fatal if ingested.
Environment
Used coolant must be disposed of as specified in
national and international laws and regulations.
Fuel system
WARNING!
Maintenance and repairs of injection equipment
are to be carried out by an authorised Scania
workshop.
Always use Scania spare parts for the fuel and
electrical systems. Scania spare parts are de-
signed to minimise the risk of fire and explosion.
Environment
Use a suitable container. The fuel collected must
be disposed of as specified in national and inter-
national laws and regulations.
Electrical system
WARNING!
Switch off the engine and switch off the power
by disconnecting the electrical cables to the bat-
tery. External power supplies to extra equipment
in the engine must also be disconnected.
Always use Scania spare parts for the fuel and
electrical systems. Scania spare parts are de-
signed to minimise the risk of fire and explosion.

OPM 150 en-GB 12
© Scania CV AB 2023, Sweden
Environment and safety
Electric welding
WARNING!
When carrying out welding work on and near the
engine, disconnect the battery and alternator
leads. Pull out the multi-pin connector for the en-
gine control unit as well.
Connect the welding clamp close to the compo-
nent to be welded. The welding clamp must not
be connected to the engine, or so that the current
can cross a bearing.
When welding is finished:
1. Connect the alternator and engine control
unit cables.
2. Connect the batteries.
Batteries
WARNING!
The batteries contain highly corrosive sulphuric
acid. Take care to protect your eyes, skin and
clothes when charging or handling batteries.
Wear protective gloves and eye protection.
If sulphuric acid comes in contact with the skin:
Wash with soap and plenty of water. If it gets in
your eyes: Rinse immediately with plenty of wa-
ter and seek medical attention.
Environment
Used batteries must be disposed of as specified
in national and international laws and regula-
tions.
Before starting
WARNING!
Ensure that all guards are in place before starting
the engine. Ensure that no tools or other objects
have been left on the engine.
The air filter must be fitted before starting the en-
gine. Otherwise there is a risk of objects being
sucked into the compressor impeller or of injury
if you come into contact with the air filter.
Cybersecurity
IMPORTANT!
The machine manufacturer is responsible for en-
suring that all engine management communica-
tion is protected against all forms of cyber attack.
The machine manufacturer is also responsible
for ensuring the engine can be operated safely in
all conditions, including the option of shutting
off the engine in the event of disruption to com-
munications with or without engine control.

Engine data plate
OPM 150 en-GB 13
© Scania CV AB 2023, Sweden
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. The engine 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: DI09 070M
DI Turbocharged diesel engine with water-
cooled charge air cooler.
09 Displacement in whole dm3.
070 Performance and certification code. The
code indicates, together with the applica-
tion code, the normal gross engine output.
M Code for application. M means for
marine use.
Example of an engine data plate

Component identification
OPM 150 en-GB 14
© Scania CV AB 2023, Sweden
Component identification
The illustration shows a normal version of a DI09 engine with heat exchanger. The engine ordered may have
different equipment.
1. Engine serial number, stamped into the cylinder block.
2. Oil filler.
3. Fuel manifold bleed nipple.
4. Engine data plate.
5. Air filter.
6. Fuel filter.
7. Hand pump for fuel.
8. Oil plug.
9. Oil dipstick.
10. Sea water outlet.
11. Nipple for draining condensation in charge air cooler.
12. Charge air cooler.
13. Heat exchanger.
14. Expansion tank.
15. Filling coolant.
16. Level glass for checking coolant level.
17. Oil filter.
18. Sacrificial anodes (2 pcs).
19. Nipple for draining and filling coolant.
20. Centrifugal oil cleaner.
21. Sea water intake.
22. Sea water pump.

OPM 150 en-GB 15
© Scania CV AB 2023, Sweden
Starting and driving
Starting and driving
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.
• Coolant.
• Fuel level.
• Fluid level in batteries.
• Battery state of charge.
• Condition of the drive belt.
checks before driving
Carry out daily maintenance as described in the
maintenance schedule prior to operation. See
Maintenance interval.
Starting the engine
WARNING!
Never use starter gas or similar agents to help
start the engine. This can cause an explosion in
the intake manifold and possible injury.
Only start the engine in a well ventilated area.
When the engine is run in an enclosed space,
there must be effective devices to extract exhaust
gases and crankcase gases.
IMPORTANT!
The starter motor must only be cranked twice for
30 seconds at a time. After that, it must rest for at
least 5 minutes before the next attempt to start it.
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 motor.
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 Bleeding the fuel system.

OPM 150 en-GB 16
© Scania CV AB 2023, Sweden
Starting and driving
Starting at low temperatures
Take the local environmental requirements into
account. Use a fuel heater and engine heater to
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).
A low engine speed and a moderate load on a
cold engine limits white smoke, gives better
combustion and warms up the engine more
quickly than warming it up with no load.
Avoid running it longer than necessary at idling
speed.
Driving
Check instruments and warning lamps at regular
intervals.
Engine speed range
The engine operating speed range is between low
idling and the nominal engine speed. The nomi-
nal engine speed is indicated on the engine data
plate. Low idling can be set between 500 and
1,050 rpm.
Limp home operation
If there is a fault in the normal throttle opening or
if CAN communication is interrupted, the fol-
lowing emergency operation option is provided:
A CAN fault or throttle opening fault in an all-
speed engine (both signal and idling switch):
• The throttle opening value is 0% and the en-
gine is running at normal idling speed.
• The throttle opening value is 0% and the en-
gine runs at fixed raised idling speed (800
rpm) if this function is activated.
CAN fault:
• The engine is switched off if the shutdown
function is activated.
Driving at high altitude
When driving at high altitudes engine power is
reduced automatically due to the lower oxygen
content in the air. It is then not possible to run the
engine at maximum power.
• ICFN and PRP engines may be used at an al-
titude of up to 2,000 metres.
• IFNengines must not be used at an altitude of
more than 1,000 metres.
• Contact Scania if the operating conditions de-
viate from these.

OPM 150 en-GB 17
© Scania CV AB 2023, Sweden
Starting and driving
Coolant temperature
IMPORTANT!
An excessive coolant temperature can cause en-
gine damage.
Normal coolant temperature during operation is
90 to 95°C (194 to 203°F) for engines with a heat
exchanger and 83 to 88°C (181 to 190°F) for en-
gines with keel cooling.
Alarm levels are set in the engine control unit.
The default setting for the lowest and highest
limit values for high coolant temperature are
95°C/203°F and 105°C/221°F respectively.
The high coolant temperature alarm has the fol-
lowing functions:
•Alarm only.
• Alarm and torque reduction at the lowest lim-
it value.
• Alarm at the lowest limit value and engine
shutdown at the highest limit value.
• Alarm, torque reduction at the lowest limit
value and engine shutdown at the highest lim-
it value.
• Alarm at the lowest limit value and engine
shutdown at the highest limit value with the
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.
Oil pressure
Normal oil pressure during operation is 3-6 bar
(43.5-87 psi). The lowest permitted oil pressure
when idling is 0.7 bar (10.2 psi).
The engine management system issues an alarm
at the following levels:
• At an engine speed below 1,000 rpm and an
oil pressure below 0.7 bar (10.2 psi).
• At an engine speed above 1,000 rpm and an
oil pressure below 2.5 bar (36.3 psi) for
longer than 3 seconds.
The incorrect oil pressure alarm has the follow-
ing functions:
•Alarm only.
• Alarm and torque reduction by 30%.
• Alarm and engine shutdown.
• Alarm and engine shutdown override control.
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
belt.
If the charging indicator lamp is still on, this
could be due to an alternator fault or a fault in the
electrical system.
Belt transmission
When the belt transmission is new, it may make
a squeaking noise when running. This noise is
normal and disappears after 50-100 hours of op-
eration. The noise does not affect the service life
of the belt transmission.

OPM 150 en-GB 18
© Scania CV AB 2023, Sweden
Starting and driving
Engine shutdown
IMPORTANT!
There is risk of post boiling and of damage to the
turbocharger if the engine is switched off with-
out cooling. The power must not be switched off
before the engine has stopped.
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 will cause a
torque reduction (70% of fuel volume). 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.
Checks after driving
WARNING!
Block the starting device when working on the
engine. If the engine starts unexpectedly, there is
a serious risk of injury.
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 there is a risk of freezing, the cooling sys-
tem must contain enough glycol. See the sec-
tion Risk of freezing.
4. If the temperature is below 0°C (32°F): Pre-
pare for the next start by connecting the en-
gine heater (if fitted).

OPM 150 en-GB 19
© Scania CV AB 2023, Sweden
Maintenance
Maintenance
The maintenance programme covers a number of
points that are divided into the following sec-
tions:
• Lubrication system.
• Air cleaner.
• Cooling system.
• Fuel system.
• Miscellaneous.
WARNING!
Block the starting device when working on the
engine. If the engine starts unexpectedly, there is
a serious risk of injury.
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.
IMPORTANT!
On delivery a Scania engine is optimised for its
application. However, regular maintenance is
necessary to:
• prevent unplanned stops
• extend the service life of the engine
• maximise the long-term emission perfor-
mance of the engine
• give the best possible operating economy.

Maintenance
OPM 150 en-GB 20
© Scania CV AB 2023, Sweden
Maintenance interval
Daily First time at Interval (hours) Minimum
first start 500 500 1,000 2,000 6,000 annu-
ally
every 5
years
RSMLXL
Lubrication system
Checking the oil level XX
Changing the oil XXXXX X
Cleaning the centrifugal oil
cleaner XXXXX X
Renewing the oil filter XXXXX X
Air cleaner
Reading the vacuum indicator X XXXXX
Renewing the filter element XX X
Renewing the safety cartridge XX X
Renewing an air filter with a
non-renewable element
XX X
Cooling system
Checking the coolant level X X XXXXX
Checking the coolant's anti-
freeze and corrosion protection XXXX
Checking the sacrificial anodes XXXXX X
Checking the sea water pump
impeller XXXXX X
Changing the coolant and clean-
ing the cooling system XX
Fuel system
Checking the fuel level XX
Draining the water separating
prefilter XXXXX
Renewing the fuel filters XXX X
Other
Checking the drive belt XXXXX
Checking for leakage X XXXXX
Checking and adjusting the
valve clearance and unit injec-
tors
XXX