Scania DI9 55 - DI9 59. Marine engine. Operator’s manual - part 4
24. Daily:
CHECKING FOR LEAKAGE, RECTIFY
AS NECESSARY
- Start the engine.
- Check for oil, coolant, fuel, air and exhaust leakages.
- Tighten or change leaking connections. Check the overflow holes (1)
which show whether the O-rings between the cylinder liner and crank-
case are leaking, see drawing.
a) If coolant is leaking out, the two upper O-rings are leaking.
Ensure that any leakage does
b) If oil is leaking out, the lower O-ring is leaking.
not pollute the environment.
A small amount of leakage from the overflow holes during the engine
running-in period is normal. (Seals and O-rings are lubricated with soap
or oil when fitted).
This leakage normally stops after a time.
In case of major leakage,
contact the nearest Scania
workshop.
1
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25. Every 2400 hours:
CHECKING/ADJUSTING VALVE
Immobilise the starting device
CLEARANCE
when working on the engine.
Note Checking/adjusting valve clearance should also be done after the
If the engine starts out of
first 400 hours of operation.
control, there is a
Valves clearances should be adjusted when the engine is cold, at least 30
SERIOUS RISK
minutes after running.
OF INJURY.
Rocker cover gaskets should be changed as necessary. Tightening torque:
25 Nm.
Intake valve clearance: 0.45 mm
Outlet valve clearance: 0.80 mm.
1
Alternative 1
- Set No. 1 cylinder to TDC by turning the engine in its direction of rota-
2
tion until both valves are closed.
- Adjust the following valves. Correct valve clearance is indicated on the
3
instruction plate on one of the rocker covers:
Cylinder 1
Intake and exhaust
4
2
In
3
Ex
4
In
5
5
Ex
- Set No. 6 cylinder to TDC by turning the engine one revolution in its
6
direction of rotation.
FLYWHEEL
- Adjust the following valves:
Cylinder 2
Ex
3
In
4
Ex
TDC
TDC
5
In
No. 6 cyl
No. 1 cyl
6
In and ex
Note
Readings can either be taken
from underneath or from
above, depending on which
flywheel is used.
The cover not being used is
covered with a seal and an
instruction plate.
FLYWHEEL
Intake valve
Covers for reading
on flywheel casing
Exhaust valve
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49
Alternative 2
- Set the No. 1 cylinder to TDC by turning the engine in its direction of
rotation until both valves are closed.
- Adjust both the valves for the No.1 cylinder. Correct valve clearance is
indicated on the instruction plate on one of the rocker covers.
- Repeat this procedure with the remaining cylinders in the order
5 - 3 - 6 - 2 - 4 (firing sequence) by turning the engine 1/3 revolution in
its direction of rotation between each adjustment.
26. Every 2,400 hours:
CHANGING (or CLEANING) THE
CLOSED CRANKCASE VENTILATION
VALVE
Alternative 1:
Change the valve at the specified interval.
Alternative 2:
- Remove the valve after the specified interval.
- Clean the valve by placing it in a bath of diesel fuel oil overnight. Then
rinse it several times in diesel and allow it to drip dry.
- Refit the valve.
- The valve may be reused (cleaned), maximum twice after the initial
2400 hours of operation. Take care to mark the valve after cleaning it.
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LONG-TERM STORAGE
If the engine is not to be used for a lengthy period of time, special measures
should be taken to protect the cooling system, fuel system and combustion
chamber from corrosion and the exterior from rusting.
The engine can normally stand idle for up to six months. If it remains unused
for longer than this the following measures, which provide protection for
about four years, should be adopted. An alternative to preparing the engine
for long-term storage is to start the engine and warm it up every 6 months.
Preparing the engine for long-term storage means:
- Thoroughly cleaning the engine
- To run the engine for a period of time with preservative fuel,
preservative oil and preservative coolant.
- Otherwise preparing the engine for storage (filter changes, lubrication,
etc.).
Preservative coolant
Ethylene glycol, if swallowed
If the engine is to be stored with a full cooling system, use coolant containing
50% glycol by volume. Glycol without nitrite-based inhibitor must be used.
can be fatal.
E.g. BASF G48 or BASF D542.
Avoid contact with the skin.
Preservative fuel
- Use diesel fuel mixed with Lubrizol 560A or equal.
- Mix 1 cm3 (ml) of Lubrizol 560A with 10 dm3 (l) of fuel.
!
HANDLING LUBRIZOL 560A
Hazardous!
Contains aromatic hydrocarbons
Use spot extractors where there is a danger of vapour build-up.
Wear protective gloves and goggles when handling Lubrizol. Do not use contaminated clothing.
In case of splashes in the eye: Rinse with moderate water spray (for min. 15 minutes). Seek medical attention.
In case of skin contact:
Wash affected areas with soap and water.
If you inhale it:
Fresh air, rest and warmth
Flammable:
Fire class 2A. Flash point + 27°.
In case of fire: Extinguish using carbonic acid, powder or foam
Storage:
In properly sealed container in a dry, cool place. Keep out of reach of children.
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Preservative oil
Suitable preservative oil can be supplied by most petroleum companies.
For example: Dinitrol 40 or the equivalent.
Preparations for storage
-
Drain and flush the cooling system. Top up with preservative coolant.
-
Warm up the engine on regular fuel. Stop the engine and drain the oil.
Always use suitable containers
-
Change the fuel filter and turbo filter.
to avoid spillage when
-
Fill the engine with preservative oil up to the minimum level on the
draining oil and coolant.
dipstick.
Dispose of used oil and coolant
-
Mix preservative fuel in a can. Detach the fuel pipe at the feed pump
through an authorized waste
suction line and connect a hose from the can.
disposal contractor.
-
Detach the fuel pipe at the overflow valve and connect a return hose to
the can.
-
Start the engine and run it at about 1000 rpm (not single-speed engines)
for 20-25 minutes.
-
Stop the engine, remove the hoses and connect the regular fuel lines.
-
Oil the valve mechanism generously with preservative oil.
-
Remove the injectors and spray preservative oil into each cylinder,
max 30 cm3 (ml).
Turn the engine over a few times using the starter motor. Spray a small
amount of oil additionally into each cylinder.
After this the engine must not be cranked. Refit the injectors.
-
Drain the preservative oil from the engine. Fresh engine oil can be filled
directly or when the engine is taken out of storage.
-
Drain the coolant if the engine is not to be stored with a full cooling
system. Plug and tape over all coolant connections (if the cooling system
is not completely assembled).
-
Air cleaner: Clean or change the filter element.
-
Cover air intakes and exhaust pipes.
-
Alternator and starter motor:
-
Spray with water-repellent anti-corrosive oil, CRC 226, LPS1 or the
equivalent.
-
Spray the outside of bright engine parts, first with penetrating preserva-
tive oil such as Dinitrol 25B and then with Dinitrol 112 or the equiva-
lent.
Winter storage
- In order to minmize the risk of condensation water in the fuel tank
during a winter stop, it should be filled with fuel.
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2001-05:1
- Attach a label to the engine showing the date of preservation and
clearly stating that it must not be started or cranked.
STORED ENGINE
Date
Do not start or crank!
Batteries
Remove the batteries for trickle charging at a charging station. (This does not
apply to batteries which, according to the manufacturer, are maintenance
free.) The same is applicable for short-term storage if the engine has not been
Wear gloves and eye protection
prepared for storage as above.
when charging and handling
batteries.
Storage
Batteries contain a highly
After the preparations, the engine should be stored in a dry and warm place
corrosive acid.
(room temperature).
Taking out of storage
(Procedure when the engine is to be put into operation)
- Remove plugs and tape from coolant connections, air intakes and
exhaust pipes.
- Fill the system with coolant, see page 18.
- Check the oil level in the engine or top up with new motor oil.
Always use suitable containers
to avoid spillage when
- Turn the engine over a few times with the injectors removed, at the same
time copiously oiling the valve mechanism with pushrods and tappets.
draining oil and coolant.
Dispose of used oil and coolant
Important The engine must be cranked with the injectors removed so that
through an authorized waste
surplus preservative oil will be pressed out of the cylinders.
disposal contractor.
- Fit the injectors.
- Empty the fuel system main filter of preservative oil.
- Bleed the fuel system.
- Wash off any externally applied preservative oil, using white spirit.
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TECHNICAL DATA
GENERAL
DI9
Number of cylinders
6 in line
Cylinder bore
mm
115
Stroke
mm
144
Displacement
dm3 (litres)
9.0
Number of main bearings
7
Firing sequence
1 - 5 - 3 - 6 - 2 - 4
Compression ratio
15:1
Engine direction of rotation viewed from rear
Anti-clockwise
Fan direction of rotation viewed from the front
Clockwise
Cooling
Fluid
Valve clearance, cold engine
intake valve
mm
0.45
exhaust valve
mm
0.80
Weight (without coolant and oil)
engine with heat exchanger
kg
905
Output
see “Engine record card”
LUBRICATION SYSTEM
Max. oil pressure
(warm engine at speeds above 800 rpm) bar (kp/cm2)
6
Normal oil pressure
(warm engine at operating speed)
bar (kp/cm2)
3 - 6
Min. oil pressure
(warm engine 800 rpm)
bar (kp/cm2)
0.7
Oil capacity, see page 27
Crankcase pressure with closed crankcase
ventilation
mm VP
-55 - +20
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2001-05:1
FUEL SYSTEM
DI9
Pump setting BTDC
See plate on rocker cover
Injectors, opening pressure
bar (kp/cm2)
300
Low idle
with RSV governor
rpm
700
Maximum full load speed
See engine card
Fuel
Diesel fuel oil1
Tightening torques:
Socket nut for injectors
Nm
70
Cap nut for delivery pipe
Nm
20
Oil leakage connection
Nm
11
1 see page 56
COOLING SYSTEM
Number of thermostats
2
Thermostat, opening temperature
°C
79
Coolant temperature:
system with atmospheric pressure
°C
70 - 93
system with positive pressure
°C
70 - about 100
Capacity with heat exchanger
dm3 (litre)
40
ELECTRICAL SYSTEM
System voltage
V
24
Alternator, current
A
65 or 90
Starter motor power
kW (hp)
4.0
(5.4)
Monitors, settings:
Oil pressure monitor
bar (kp/cm2)
2-pole: 0.7 ± 0.15
Temperature monitor
°C
Stamped on monitor hexagon
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FUEL
Diesel fuel
The composition of the diesel fuel is vitally important to the operation and
life of the engine and the fuel injection pump. The engine power output and
the exhaust emissions are also dependent on the fuel quality.
The requirements and the test standards for the most important properties are
described in the workshop manual in sections that can be ordered from your
Scania dealer or directly from Scania. The address of Scania is printed on the
cover.
The diesel fuel shall comply with the following standard:
EN 590 (European standard).
The table below shows the requirements for some of the most important
properties:
Property
Requirement
Viscosity at 40°C
2.0 - 4.5 mm2/s (cSt)
Density at 15°C
0.82 - 0.86 kg/dm3
Sulphur (concentration by mass)
max. 0.3%
Ignitability (CET rating)
min. 49
Flashpoint
56°C
Environmentally favourable fuels (low sulphur fuels)
There are three different grades of so called environmentally favorable fuels
(SS15 54 35). Grade 1 is sulphur-free and grade 2 is low in sulphur.
Compared with class 3 (normal fuel), these fuels are less dense and this
reduces engine power output. Only class 1 fuel should be used with a
catalytic converter.
Short term use of fuel with a higher sulphur content than 0.05% by weight
will not cause permanent damage to the catalytic converter.
The catalytic converter may, however, require fuel with low sulphur content
for some time after this to regain its normal efficiency.
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2001-05:1
Temperature dependence of diesel fuel
At temperatures lower than those specified for the diesel fuel, paraffin wax
may precipitate from the fuel and block filters and pipes. The engine can then
loose power or stop.
The diesel fuel is adapted for use in the specific climate of each country.
It is not permitted to mix
If a vehicle or an engine is to be operated in a temperature zone with lower
kerosene with diesel fuel that is
temperature than normal, first identify the temperature properties of the
already adapted for the climate
fuel concerned.
concerned. The injection pump
The properties of the fuel when cold can be improved by adopting one of the
may be damaged. All use of
following measures before the temperature drops:
paraffin other than kerosene is
- If the fuel concerned is not intended for the expected temperature and no
forbidden, as it causes
diesel fuel with the correct temperature properties is available, we
engine damage.
recommend that an electric fuel heater be installed as a preventative
measure.
- The low temperature properties of diesel fuel may be improved by
adding kerosene as a preventative measure. A maximum of 20% may
be added. When refuelling, the kerosene should be added first, so that it
mixes thoroughly with the diesel fuel.
It is not permissible to mix
Note: It is prohibited to use kerosene in engine fuel in some countries.
petrol with diesel fuel. Petrol
- To prevent water in the fuel from freezing and forming ice, maximum
may cause wear to the fuel
0.5-2% alcohol (isopropanol) may be added.
injection pump and it may also
Drain fuel tanks and drain or renew fuel filters at regular intervals.
cause damage to the engine.
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ALPHABETIC INDEX
Air cleaner
38
Leakage
48
Air cleaner, filter element
38
LED functions
14
Air cleaner, low pressure indicator
38
Long-term storage
51
Air cleaner, pre-filter
38
Low pressure indicator
38
Air cleaner, safety cartridge
40
Lubricating oil pressure
22
Lubricating oil pressure monitor
46
Batteries
43
Lubricating oil system
26
Battery, changing
47
Maintenance
24
Certified engines
5
Maintenance Schedule
25
Checks after running
23
Checks before running
19
Oil analysis
26
Clutch
23
Oil capacity
27
Coolant
32
Oil change
27
Coolant level
30
Oil cleaner
28
Coolant level monitor
44
Oil grade
26
Coolant temperature
21
Oil level
27
Coolant temperature monitor
45
Oil pressure
22
Coolant, changing
34
Oil pressure monitor
46
Cooling system
30
Oil pressure monitor, DEC2
46
Cooling system, cleaning
35
Corrosion inhibitor
34
Pre-filter, air cleaner
38
DEC2 Control system
12
Running
21
DEC2 sensors
13
Drive belt
47
Safety cartridge, air cleaner
40
Safety details
6
Electrical system
43
Safety precautions for care and maintenance . . 8
Engine speed
21
Safety precautions for handling materials
8
Environmental responsibility
4
Safety precautions for operation
7
Starting the engine
19
Fault codes DEC2
16
Start-up report
1
Filter, air cleaner
38
Stopping the engine
22
Filter, fuel
41
Storage
53
Foreword
2
Fuel filter, changing
41
Taking out of storage
53
Fuel level
41
Technical data
54
Fuel specifications
56
Temperature monitor
45
Fuel system
41
Turbo filter
30
Fuel system, bleeding
41
Type designations
10
Glycol
32
Valve clearance
49
Venting, fuel system
41
Injectors
42
Warranty
1
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