OC16
Table of contents
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Important information
WARNING!
Serious risk of injury
When working on the engine, for example when adjusting drive belts and the clutch, or when changing the
oil, it is important not to start the engine. The engine could be damaged, but more importantly there is a
serious risk of injury.
Therefore, block the starting device and switch off the manual fuel cock when working on the engine. This
is especially important if the engine has a remote starter or automatic starting.
This warning symbol and text can be found next to those maintenance items where it is particularly important to bear in mind the risk of injury.
Operator's manual
OC16 Gas Industrial engine
en-GB 2 831 273
Issue 3.0
Start of warranty . . . . . . . . . . . . . . . . . . . . . . . . 3
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Power classes . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Environment and safety . . . . . . . . . . . . . . . . . . 6
Environmental responsibility . . . . . . . . . . . . . 6
Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Warnings and advisories . . . . . . . . . . . . . . . . . 7
Engine data plate . . . . . . . . . . . . . . . . . . . . . . . 14
Component identification . . . . . . . . . . . . . . . . 15
Starting and running . . . . . . . . . . . . . . . . . . . . 17
Checks before first start . . . . . . . . . . . . . . . . 17
Checks before running . . . . . . . . . . . . . . . . . 17
Starting the engine . . . . . . . . . . . . . . . . . . . . 17
Running. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Engine shutdown. . . . . . . . . . . . . . . . . . . . . . 19
Checks after running . . . . . . . . . . . . . . . . . . . 19
Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Maintenance interval. . . . . . . . . . . . . . . . . . . 21
Lubrication system . . . . . . . . . . . . . . . . . . . . . 22
Oil grade . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Oil analysis . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Checking the oil level . . . . . . . . . . . . . . . . . . 25
Maximum angles of inclination during operation
25
Changing the oil . . . . . . . . . . . . . . . . . . . . . . 26
Cleaning the centrifugal oil cleaner . . . . . . . 27
Operational testing of the centrifugal oil cleaner
31
Renewing the oil filter. . . . . . . . . . . . . . . . . . 32
Air cleaner . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Reading the vacuum indicator. . . . . . . . . . . . 33
Renewing the filter element and safety cartridge
33
Cooling system . . . . . . . . . . . . . . . . . . . . . . . . . 34
Coolant . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Checking coolant level . . . . . . . . . . . . . . . . . 38
Checking the coolant's antifreeze and corrosion
protection . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
Changing the coolant and cleaning the cooling
system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
Fuel system . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
Cleaning the flame arrestor and throttle at the
flame lock . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
Cleaning the throttle at the gas mixer . . . . . . 48
Leak testing after maintenance of the fuel circuit
49
Checking deposits in the combustion chamber.
56
Electrical system . . . . . . . . . . . . . . . . . . . . . . . 57
Renewing the spark plugs . . . . . . . . . . . . . . . 57
Other . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59
Checking the drive belt . . . . . . . . . . . . . . . . . 59
Checking for leaks . . . . . . . . . . . . . . . . . . . . 60
Checking and adjusting the valve clearance .61
Quality requirements for fuel . . . . . . . . . . . . .64
Methane amount and calorific value per power
level . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .64
Other quality requirements. . . . . . . . . . . . . . .65
Preparing the engine for storage . . . . . . . . . . .66
Preservative products . . . . . . . . . . . . . . . . . . .66
Preparations for storage . . . . . . . . . . . . . . . . .66
Technical data . . . . . . . . . . . . . . . . . . . . . . . . . .69
General data . . . . . . . . . . . . . . . . . . . . . . . . . .69
Lubrication system . . . . . . . . . . . . . . . . . . . . .69
Fuel system. . . . . . . . . . . . . . . . . . . . . . . . . . .70
Cooling system. . . . . . . . . . . . . . . . . . . . . . . .70
Intake system . . . . . . . . . . . . . . . . . . . . . . . . .70
Electrical system . . . . . . . . . . . . . . . . . . . . . .70
Scania Assistance . . . . . . . . . . . . . . . . . . . . . . .71
General tightening torques for screw joints . .72
Hexagon screws, hexagon socket screws, Torx
screws, hexagon nuts . . . . . . . . . . . . . . . . . . .72
Flange screws with hexagonal head and hexago-
nal flange nuts . . . . . . . . . . . . . . . . . . . . . . . .72
Hose clamps . . . . . . . . . . . . . . . . . . . . . . . . . .73
OPM 320 en-GB 2
© Scania CV AB 2019, Sweden
Start of warranty
Note:
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 warranty 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.
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
Post code
Postal town
State/County
Country
OPM 320 en-GB 3
© Scania CV AB 2019, Sweden
Introduction
Note:
Note:
This Operator's manual describes the operation
and maintenance of Scania industrial engines.
The engines are liquid-cooled Otto gas engines
with turbochargers.
The engines are available with different power
settings. Engine power for the engine ordered is
indicated on a plate located on the engine control
unit.
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:
Introduction
• 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 workshop for maintenance and repairs.
The information in this Operator's manual was
correct at the time of going to press. Scania reserves the right to make alterations without prior
notice.
Always use spare parts that are approved by Scania for maintenance and repairs.
OPM 320 en-GB 4
© Scania CV AB 2019, Sweden
Power classes
Power classes
Scania supplies engines in two different power classes:
PRP, Prime power: Intended for continuous use and an unlimited number of operational hours with varying loads. The average load factor must not exceed 70% of the rated power in a 24-hour period. Accumulated overload 110% for one hour per 12-hour period. This power class applies to single-speed engines.
COP, Continuous power: Intended for continual use with a non-varying load and an unlimited number of
operational hours.
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 no.:
Engine type:
Engine power: kW at rpm
PRP, Prime power
COP, Continuous power
OPM 320 en-GB 5
© Scania CV AB 2019, Sweden
Environment and safety
WARNING!
IMPORTANT!
Note:
Environment and safety
Environmental responsibility
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 and operating economy for Scania engines. To maintain these
throughout the entire service life of the engine, it
is important for the user to follow the instructions on running, maintenance and fuel, lubricating oil and coolant as outlined in the Operator's
manual.
Other green initiatives taken include ensuring
that, following maintenance and repair, waste
that is harmful to the environment (for example
oil, coolant, filters and batteries) is disposed of
accordance with the applicable environmental
requirements.
Different types of advisory
Warning!
All advisories preceded by Warning! are very
important. They warn of serious faults and incorrect operation that could lead to personal injury.
Example:
Block the starting device and switch off the manual fuel cock 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:
An excessive coolant temperature can cause engine damage.
Safety
The following pages contain a summary of the
safety precautions to be complied with when operating and maintaining Scania engines. The
equivalent text can also be found under the relevant maintenance item.
To prevent damage to the engine and personal injury, 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.
Note:
Advisories preceded by Note: refer to information important to ensure the best possible operation and functionality. Example:
Leave the engine off for at least 7 minutes before
you check the oil level.
OPM 320 en-GB 6
© Scania CV AB 2019, Sweden
Environment
Environment
WARNING!
WARNING!
IMPORTANT!
WARNING!
This Operator’s manual contains specially highlighted text with instructions to help protect the
environment during maintenance. Example:
Use a suitable container. Used coolant must be
disposed of as specified in national and international laws and regulations.
Warnings and advisories
Fuel
The engine is designed and optimised to be run
on either natural gas or pure biogas.
Environment and safety
Comply with applicable local laws and regulations when handling natural gas and pure biogas.
Methane is a highly flammable gas which is
flammable when present in a 5-16% mixture in
the air.
Methane can even be ignited by static electricity
from a person.
Methane ignites when in contact with hot surfaces at approx. 580°C.
Methane burns with an almost invisible flame.
Therefore, take extra care.
Methane is lighter than air and therefore rises in
the event of leakage. Bear this in mind if leaks do
occur in enclosed spaces such as indoors or in a
tunnel. In those cases the gas can cause suffocation and an explosive atmosphere.
Natural gas and pure biogas mainly consist of
methane, and may have a methane content of up
to 97%. Methane is flammable and must be handled with great care.
Methane is not toxic, but in a mixture of 50 per
cent or more with air, the oxygen content will be
so low that the risk of suffocation increases.
Smoking
Smoking is prohibited in the vicinity of gas engines.
OPM 320 en-GB 7
© Scania CV AB 2019, Sweden
Environment and safety
WARNING!
REQUIREMENT!
WARNING!
IMPORTANT!
WARNING!
Safety precautions for running the
engine
Daily maintenance
Always carry out a visual inspection of the engine 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 require corrective action.
Fuel
Fuel of the wrong quality can cause malfunctions
or cause the engine to stop. This can cause damage to the engine and, possibly, personal injury.
Starter lock
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.
Running
The engine must not be run in environments
where there is a risk of explosion, as all of the
electrical or mechanical components can generate sparks.
Use only fuel which fulfils the requirements in
the Quality requirements for fuel section.
Hazardous gases
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 effective devices to extract gas and
exhaust gases.
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 rotating parts and hot surfaces must be fitted with
guards.
OPM 320 en-GB 8
© Scania CV AB 2019, Sweden
Environment and safety
WARNING!
WARNING!
WARNING!
Environment
Safety precautions for handling materials
Lubricating oil
All lubricants and many chemicals are flammable. Always follow the instructions on the relevant packaging.
The work must be carried out on a cold engine.
Spillage on hot surfaces can cause fires.
Store used rags and other flammable materials
safely so as to avoid spontaneous combustion.
Batteries
The batteries contain and form oxyhydrogen gas,
particularly during charging. Oxyhydrogen gas
is flammable and highly explosive.
Chemicals
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 follow 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.
Excess and used chemicals must be disposed of
as specified in national and international laws
and regulations.
There must be no smoking, naked flames or
sparks near the batteries or the battery compartment. Incorrect connection of a battery cable or
jump lead can cause a spark, which can cause the
battery to explode.
OPM 320 en-GB 9
© Scania CV AB 2019, Sweden
Environment and safety
WARNING!
WARNING!
WARNING!
Environment
Safety precautions for maintenance
Switch off the engine
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.
Hot surfaces and fluids
Lubrication system
Hot oil can cause burns and skin irritation. Wear
protective gloves and goggles when changing
hot oil.
Make sure that there is no pressure in the lubrication system before starting work on it.
Make sure that the oil filler cover is fitted when
starting and running in order to avoid oil escaping.
Used oil must be disposed of as specified in national and international laws and regulations.
There is always a risk of sustaining burns when
an engine is hot. Particularly hot parts are engine
manifolds, turbochargers, oil sumps, as well as
hot coolant and oil in pipes and hoses.
OPM 320 en-GB 10
© Scania CV AB 2019, Sweden
Environment and safety
WARNING!
Environment
WARNING!
IMPORTANT!
Cooling system
Never open the coolant filler cap when 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 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 protective goggles and gloves when handling coolant.
Ethylene glycol can be fatal if ingested.
Used coolant must be disposed of as specified in
national and international laws and regulations.
Fuel system
Natural gas and pure biogas are extremely flammable and can even be ignited by static electricity from a person.
Natural gas and pure biogas are lighter than air
and therefore rise in the event of leakage. Be
aware of if there is a leak in a confined space. In
those cases the gas can cause suffocation and an
explosive atmosphere.
Always use Scania spare parts for the fuel and
electrical systems. Scania spare parts are designed to minimise the risk of fire and explosion.
Work on the engine may only be carried out by
personnel who are aware of the risks and have
sufficient knowledge of natural gas and pure biogas.
Comply with applicable local laws and regulations when handling natural gas and pure biogas.
The operator is responsible for using the correct
type of gas to ensure that local laws are complied
with.
OPM 320 en-GB 11
© Scania CV AB 2019, Sweden
Before working on the engine, ensure that the
WARNING!
365 213
Display signs such as this when working on a gas
engine.
gas content of the air is below 10% of the lower
explosive limit (LEL). Also check the permitted
gas content with reference to local laws and regulations.
When working on the engine, use warning plates
indicating that work with flammable fuel is in
progress. Warning signs should be written in the
local language. Comply with local regulations on
the design of warning signs. An example of the
design of a warning sign is shown in the illustration.
Inform all personnel of the basic risks of natural
gas and pure biogas.
Check the grounding of the engine where open
handling of gas takes place, i.e. handling which
may give rise to an explosive atmosphere.
Environment and safety
Never attempt to put out a burning gas flame. Try
to stop the flow of gas instead. Move material
that could be ignited by the flame.
Electrical system
Before working on the electrical system, ensure
that the gas content of the air is below 10% of the
lower explosive limit (LEL). Also check the permitted gas content with reference to local laws
and regulations.
Switch off the engine and switch off the power
by disconnecting the electrical cables to the battery. 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 designed to minimise the risk of fire and explosion.
OPM 320 en-GB 12
© Scania CV AB 2019, Sweden
Electric welding
WARNING!
WARNING!
WARNING!
Environment
WARNING!
Before welding, ensure that the gas content of
the air is below 10% of the lower explosive limit
(LEL). Also check the permitted gas content
with reference to local laws and regulations.
When carrying out welding work on and near the
engine, disconnect the battery and alternator
electrical cables. Pull out the multi-pin connector
for the engine control unit as well.
Connect the welding clamp close to the component 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:
Environment and safety
Cut the power by disconnecting the electrical cables to the battery and not to the engine, as there
is a risk of sparks building up.
Used batteries must be disposed of as specified
in national and international laws and regulations.
1. Connect the alternator and control unit ca-
bles.
2. Connect the batteries.
Batteries
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 goggles.
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 water and seek medical attention.
Before starting
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 engine. 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.
OPM 320 en-GB 13
© Scania CV AB 2019, Sweden
Engine data plate
Made
by
T
ype
Engine No
Output
.
kW
rpm.
OC16 071A
1234567
333-407
1500
Output
.
kW
rpm.
372-426
1800
369 476
Example of an 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 type power range and
the nominal engine speed.
The engine power is stated on a plate which is located on the engine control unit. The engine serial number is stamped onto the top of the cylinder
block at the front right.
Example: OC16 071A
OC Supercharged gas engine with air-cooled
charge air cooler.
3
16 Displacement in whole dm
071 Performance and certification code. The
code indicates, together with the application code, the normal gross engine output.
A Code for application. A means for general
industrial use.
.
Engine data plate
© Scania CV AB 2019, Sweden
OPM 320 en-GB 14
Component identification
2
3
4
5
6
7
8
1
368 360
1. Filling coolant
2. Centrifugal oil cleaner
3. Throttle at gas mixer
4. Oil dipstick
5. Oil plug
6. Oil filler
7. Nipple to drain and fill coolant (behind the coolant manifold, one on each side).
8. Oil filter
Component identification
OPM 320 en-GB 15
© Scania CV AB 2019, Sweden
Component identification
368 361
9
10
11
12
13
14
9. Engine data plate and engine serial number
10. Air cleaner
11. Spark plug
12. Lambda sensor
13. Flame arrestor
14. Throttle at flame arrestor
OPM 320 en-GB 16
© Scania CV AB 2019, Sweden
Starting and running
WARNING!
WARNING!
IMPORTANT!
Starting and running
Checks before first start
Before the engine is started for the first time, carry out the maintenance items listed under First
start in the maintenance schedule. Check the following:
• Oil level.
• Coolant.
• Fluid level in batteries.
• State of battery charge.
• Condition of the drive belt.
See also Maintenance interval
Checks before running
Block the starting device and switch off the manual fuel cock when working on the engine. If the
engine starts unexpectedly, there is a serious risk
of injury.
Carry out daily maintenance as described in the
maintenance schedule prior to operation. See
Maintenance interval
.
.
Starting the engine
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 gas and
exhaust gases.
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.
1. Open the manual fuel cock.
2. Disconnect the engine from any load.
3. If the engine has a battery master switch:
Connect the power using the battery master
switch.
4. Start the engine.
5. The engine will rev up. Let the engine run
without load for 2 minutes.
Starting at low temperatures
Take the local environmental requirements into
account. Use the engine heater to avoid starting
difficulties. Scania recommends that an engine
heater should be used if the engine will be used
at temperatures below -10°C.
OPM 320 en-GB 17
© Scania CV AB 2019, Sweden
A low engine speed and moderate load on a cold
engine gives better combustion and faster heating than warming up with no load.
Avoid running it longer than necessary at idling
speed.
Starting and running
Note:
IMPORTANT!
Note:
Running
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 nominal engine speed is 1,500 or 1,800 rpm. Low
idling is normally 1,000 rpm.
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.
Driving at a height higher than 2,000 metres
above sea level is only permitted if it has first
been approved by Scania.
Coolant temperature
An excessive coolant temperature can cause engine damage.
Normal coolant temperature during operation is
90-95°C (194-203°F).
The engine is designed and optimised for continuous operation at 100% load. To ensure operational reliability and to extend the maintenance
intervals, the following limitations for load and
operating time apply:
Output at 100% PRP Max. operating time
0-25% load 30 minutes
25-40% load 120 minutes
More than 40% load No restrictions.
The accumulated total engine operating time at
less than 25% load should be < 5%.
The accumulated total engine operating time of
the engine at less than 40% load should be
<15%.
Oil pressure
For information on the normal oil pressure and
lowest permitted oil pressure, see the Technical
data section.
The engine management system activates an
alarm for high or low oil pressure at engine
speeds above 650 rpm. The values below are for
overpressure, not absolute pressure.
• An alarm for high oil pressure is activated
when the pressure exceeds 7.9 bar (115 psi).
• An alarm for low oil pressure is activated
when the oil pressure drops below 0.65 bar
(9 psi).
Alarm levels are set in the engine control unit.
The default setting for the lowest and highest
limit values for high coolant temperature are
98°C (208°F) and 105°C (221°F) respectively.
The high coolant temperature alarm has the following functions:
• Alarm at the lowest limit value.
• Alarm at the lowest limit value and engine
shutdown at the highest limit value.
The incorrect oil pressure alarm has the following functions:
• Alarm only.
• Alarm and engine shutdown.
High oil pressure (above 6 bar/87 psi) is normal
if the engine is cold when started.
OPM 320 en-GB 18
© Scania CV AB 2019, Sweden
Starting and running
IMPORTANT!
WARNING!
IMPORTANT!
Charge air temperature
The engine management system has the following alarm levels for high charge air temperature.
• Alarm at 70 C (158°F).
• Alarm or engine shutdown at 80°C (176°F).
Charging indicator lamp
If the lamp comes on during operation: Check
and adjust the alternator drive belt according to
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 operation. The noise does not affect the service life
of the belt transmission.
Engine shutdown
There is risk of post 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.
Checks after running
Block the starting device and switch off the manual fuel cock 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 turbochargers, oil sumps, hot coolant and oil in pipes
and hoses.
Check the coolant level following the first start.
Top up with coolant as necessary.
1. Check that the manual fuel cock is turned off.
2. Check that the power supply has been cut.
3. Check that the cooling system contains
enough glycol according to the Scania instructions. See the section Coolant
4. If the temperature is below 0°C (32°F): Pre-
pare for the next start by connecting the engine heater (if fitted).
.
1. Run the engine without load for 3 minutes at
the nominal engine speed.
2. Switch off the engine via the coordinator and
allow the engine to run until the gas has run
out and the engine stops.
3. Close the manual fuel cock.
OPM 320 en-GB 19
© Scania CV AB 2019, Sweden
Maintenance
WARNING!
XL
6000
S
5500
M
5000
S
4500
L
4000
S
3500
M
3000
S
2500
L
2000
S
1500
M
1000
S
500
313 153
IMPORTANT!
The maintenance programme covers a number of
points that are divided into the following sections:
• Lubrication system.
• Air cleaner.
• Cooling system.
• Fuel system.
• Electrical system.
• Miscellaneous.
Block the starting device and switch off the manual fuel cock when working on the engine. If the
engine starts unexpectedly, there is a serious risk
of injury.
Maintenance
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 performance of the engine
• give the best possible operating economy.
There is always a risk of sustaining burns when
an engine is hot. Particularly hot parts are turbochargers, oil sumps, hot coolant and oil in pipes
and hoses.
The maintenance programme includes the following:
• R maintenance: One event when taken into
service.
• S maintenance: Minimum basic maintenance.
• M maintenance: More extensive maintenance.
• L maintenance: Includes nearly all maintenance items in the form.
• XL maintenance: Includes all maintenance
items in the form.
During a period, the sequence is S-M-S-L-S-MS-L-S-M-S-XL.
OPM 320 en-GB 20
© Scania CV AB 2019, Sweden
Maintenance
Maintenance interval
Daily First time at Interval (hours) Minimum
first start 500 500 1,000 1,500 2,000 6,000 an-
RSM
SP
LXL
nual-
Lubrication system
Checking the oil level XX
Changing the oil XXXXXXX
Cleaning the centrifugal oil
cleaner
XXXXX
Renewing the oil filter XXXXXXX
Air cleaner
Reading the vacuum indicator
X XXXXXX
Renewing the filter element XX X
Renewing the safety cartridge
XX X
Cooling system
Checking coolant level X X XXXXXX
Checking the coolant's antifreeze and corrosion protec-
XXXX
tion
Changing the coolant and
cleaning the cooling system
XX
Fuel system, only when using pure biogas
Cleaning the flame arrestor
and throttle at the flame
X
lock
Cleaning the throttle at the
gas mixer
Leak testing after maintenance of the fuel circuit
Checking deposits in the
combustion chamber
XX
X
X
Electrical system
Renewing the spark plugs XX
Other
Checking the drive belt XXXXX
Checking for leaks X XXXXX
Checking and adjusting the
valve clearance
XXX
ly
every
5
years
OPM 320 en-GB 21
© Scania CV AB 2019, Sweden
Lubrication system
Lubrication system
Oil grade
Scania LDF stands for the Scania Long Drain
Field test standard. Scania LDF oils have been
carefully selected after extensive testing. The approval is only granted to the highest quality engine oils available on the market.
Recommended oil: Scania Oil LDF-4.
The engine oil must fulfil the following quality
requirements:
•ACEA E6.
•ACEA E9
•API CJ4.
Check with your oil supplier that the oil meets
these requirements.
If Scania Oil LDF-4 is not used, the oil must be
of a viscosity class suitable for the outdoor temperature in the area where the engine is used.
Viscosity
class
SAE 20W-30 -15°C - +30°C
SAE 30 -10°C - +30°C
SAE 40 -5°C - +45°C
SAE 50 0°C - +45°C
SAE 5W-30 < -40°C - +30°C
SAE 10W-30 -25°C - +30°C
SAE 15W-40 -20°C - +45°C
Viscosity
class
SAE 20W-30 5°F - 86°F
SAE 30 14°F - 86°F
SAE 40 23°F - 113°F
SAE 50 32°F - 113°F
SAE 5W-30 < -40°F - 86°F
SAE 10W-30 -13°F - 86°F
SAE 15W-40 -4°F - 113°F
Outdoor temperature in °C
Outdoor temperature in °F
For operation at extremely low outdoor temperatures: Consult your nearest Scania representative
on how to avoid starting difficulties.
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 320 en-GB 22
© Scania CV AB 2019, Sweden
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