Scania DI9, DC9 with DEC2. Industrial engine. Instruction — part 4
49
Alternative 2
- Set No. 1 cylinder to TDC by turning the engine in its direction of
rotation until all four valves are closed.
- Adjust all valves for No. 1 cylinder. Correct valve clearances are
indicated on the instruction plate on one of the rocker covers.
- Repeat this procedure with the other cylinders in the order
5 - 3 - 6 - 2 - 4 (firing order) by turning the engine 1/3 revolution in its
direction of rotation between each adjustment.
Note:
Readings can be taken from the
flywheel through covers in the
flywheel housing either from
above or underneath depending
on access when fitting.
It says up or down on the flywheel
Both covers are fitted with a cover
at delivery.
Covers for reading
on the flywheel housing
50
24. Every 2400 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), but not more than twice after the
first 2400 hours of use. Take care to mark the valve after cleaning it.
51
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
- Running the engine for a certain time using special preservative fuel, oil
and coolant.
- Otherwise preparing the engine for storage (filter changes, lubrication,
etc.).
Preservative coolant
If the engine is to be stored with a full cooling system, use coolant containing
50% glycol by volume. Glycol without nitrite-based inhibitor should be used.
For example
BASF G48 or BASF D542.
Preservative fuel
- Use diesel fuel oil mixed with Lubrizol 560A or equivalent.
- Mix 1 cm
3
(ml) Lubrizol 560A in 10 dm
3
(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.
If it gets in your eyes:
Rinse with a gentle stream of water (at least 15 minutes). Seek medical attention.
If it gets on your skin:
Wash the affected area with soap and water
If inhaled:
Fresh air, rest and warmth
Inflammable:
Fire class 2A. Flashpoint + 27.
In case of fire: Extinguish with carbon dioxide, powder or foam.
Storage:
In well-sealed receptacle in a dry, cool place. Keep out of reach of children.
!
Ethylene glycol is
toxic if ingested.
Avoid contact with the skin.
52
Preservative oil
Suitable preservative oil can be supplied by most petroleum companies.
E.g. 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.
- Change the fuel filter and turbo filter.
- Fill the engine with preservative oil up to the minimum level on the
dipstick.
- Mix preservative fuel in a can. Detach the fuel pipe at the feed pump
suction line and connect a hose from the can.
- 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 cm
3
(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
preservative oil such as Dinitrol 25B and then with Dinitrol 112 or the
equivalent.
Use a container to avoid spillage
when draining the oil and
coolant.
Dispose of used oil and coolant
through an authorised waste
disposal contractor.
53
- Attach a label to the engine showing the date of preservation and
clearly stating that it must not be started or cranked.
Batteries
Remove the batteries for trickle charging at the battery charging station.
(Does not apply to batteries which according to the manufacturer do not
require any maintenance). The same is applicable for short-term storage if the
engine has not been prepared for storage as above.
Storage
After the preparations, the engine should be stored in a dry and warm place
(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 19.
- Check the oil level in the engine or fill up with fresh motor oil.
- Turn the engine over a few times with the injectors removed, at the same
time copiously oiling the valve mechanism with pushrods and tappets.
Important!
The engine must be turned over with the injectors removed so
that surplus preservative oil will be pressed out of the
cylinders.
- Fit the injectors.
- Empty the fuel system's main filter of preservative oil.
- Bleed the fuel system, see page 40.
- Wash off any externally applied preservative oil, using white spirit.
STORED ENGINE
Date . . . . . . . . . . .
Do not start or crank!
Wear gloves and protective
goggles when charging and
handling batteries
The batteries contain a highly
corrosive acid.
54
TECHNICAL DATA
GENERAL
DC9
DI9
Number of cylinders
6 in line
Cylinder diameter
mm
115
Stroke
mm
144
Capacity
dm
3
(litres)
9,0
No. of main bearings
7
Firing order
1 - 5 - 3 - 6 - 2 - 4
Compression ratio
17:1
Engine direction of rotation viewed from rear
Anti-clockwise
Fan direction of rotation viewed from front
Clockwise
Cooling
Liquid
Valve clearances, cold engine
intake valve
mm
exhaust valve
mm
0,45
0,80
Weight, without coolant or oil
kg
*With charge air cooler, radiator,
expansion tank and pipes
890*
840
Power
see engine card, "Engine record card"
LUBRICATION SYSTEM
Max. oil pressure
(hot engine at engine speeds
above 800 rpm
bar (kp/cm
2
)
6
Normal oil pressure
(hot engine at operating speeds)
bar (kp/cm
2
)
3 - 6
Min. oil pressure
(hot engine 800 rpm)
bar (kp/cm
2
)
0,7
Oil capacity, see page 29
Crankcase pressure with
closed crankcase ventilation
mm VP
-55 - +20
FUEL SYSTEM
DC9
DI9
Pump setting BTDC
See plate on rocker cover
Injector, opening pressure
bar (kp/cm
2
)
300
Low idle speed
rpm
700
Maximum full load speed
See engine card
Fuel
Diesel fuel oil
1
Tightening torques:
Threaded socket nut for injectors
Nm
Cap nut for delivery pipe
Nm
Oil leakage connection
Nm
70
20
11
1
COOLING SYSTEM
Number of thermostats
1
Thermostat, opening temperature
°
C
79
Coolant temperature:
system at atmospheric pressure
°
C
system at overpressure
°
C
70 - 93
70 - approx. 100
Volume, incl 0.75 m
2
radiator and
expansion tank
dm
3
(litres)
50
53
ELECTRICAL SYSTEM
System voltage
V
24
Alternator, current
A
65 or 90
Starter motor output
kW (hp)
4,0 (5,4)
Monitors, alarm values:
oil pressure monitor
bar (kp/cm
2
)
temperature monitor
°C
0,7
±
0,15
Stamped on hexagonal part of monitor
56
FUEL
Diesel fuel oil
The composition of the diesel fuel oil has a great influence on the functioning
and the service life of the engine and the injection pump. The engine output
and exhaust emissions are also dependent on the fuel quality. The
requirements and testing standards for the most important properties are
described in the service instruction in sections which can be ordered from Scania
dealers or directly from Scania. The address of Scania is printed on the cover.
The diesel fuel must meet European standard EN 590.
The table below shows the requirements for some of the most important
properties:
Environmentally favourable fuels (low sulphur fuels)
There are three classes of so called environmentally favourable fuels
(SS15 54 35).
Class 1 is sulphur-free and class 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.
Property
Requirement
Viscosity at 40
°
C
2.0 - 4.5 mm
2
/s (cSt)
Density at 15
°
C
0.82 - 0.86 kg/dm
3
Sulphur (concentration by mass)
max. 0.3%
Ignitability (CET rating)
min. 49
Flashpoint
56°C
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
lose power or stop.
The diesel fuel is adapted for use in the specific climate of each country. If a
vehicle or an engine is to be operated in a temperature zone with lower
temperature than normal, first identify the temperature properties of the
fuel concerned.
The properties of the fuel when cold can be improved by adopting one of the
following measures before the temperature drops:
- If the fuel concerned cannot cope with the expected temperatures, and
diesel fuel is not available with the correct temperature properties, we
recommend that an electric fuel heater is 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.
Note:
It is prohibited to use kerosene in engine fuel in
some countries.
- To prevent water in the fuel from freezing and forming ice, a maximum
of 0.5-2% alcohol (isopropanol) may be added.
Drain fuel tanks and drain or change fuel filters regularly.
It is not permitted to mix
kerosene with diesel fuel that is
already adapted for the climate
concerned. The injection pump
may be damaged. All use of
paraffin other than kerosene is
forbidden, as it causes engine
damage.
It is not permissible to mix
petrol with diesel fuel. In the
long term, petrol may cause
wear to the injection pump and
at worst it may also cause
damage to the engine.
58
ALPHABETICAL INDEX
Air cleaner . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
Air cleaner, prefilter . . . . . . . . . . . . . . . . . . . . 38
Air cleaner, safety cartridge . . . . . . . . . . . . . . 39
Air cleaner, vacuum indicator . . . . . . . . . . . . 38
Air filter, element . . . . . . . . . . . . . . . . . . . . . . 38
Batteries . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
Bleeding, fuel system . . . . . . . . . . . . . . . . . . . 40
Certified engines . . . . . . . . . . . . . . . . . . . . . . . . 5
Changing the battery . . . . . . . . . . . . . . . . . . . 46
Changing the fuel filter . . . . . . . . . . . . . . . . . . 40
Checks after running . . . . . . . . . . . . . . . . . . . 25
Checks before running . . . . . . . . . . . . . . . . . . 21
Clutch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Coolant . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Coolant level . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Coolant level monitor . . . . . . . . . . . . . . . . . . . 43
Coolant temperature . . . . . . . . . . . . . . . . . . . . 23
Coolant temperature monitor . . . . . . . . . . . . . 44
Coolant temperature sensor . . . . . . . . . . . . . . 44
Coolant, changing . . . . . . . . . . . . . . . . . . . . . . 35
Cooling system . . . . . . . . . . . . . . . . . . . . . . . . 32
Cooling system, cleaning . . . . . . . . . . . . . . . . 36
Corrosion inhibitor . . . . . . . . . . . . . . . . . . . . . 35
DEC2 Control system . . . . . . . . . . . . . . . . . . . 12
DEC2 fault codes . . . . . . . . . . . . . . . . . . . . . . 17
DEC2 sensor . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Drive belt . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
Driving . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Electrical system . . . . . . . . . . . . . . . . . . . . . . . 42
Engine speed . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Environmental responsibility . . . . . . . . . . . . . . 4
Filter, air cleaner . . . . . . . . . . . . . . . . . . . . . . . 38
Filter, fuel . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
First start . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Fuel level . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
Fuel specifications . . . . . . . . . . . . . . . . . . . . . 56
Fuel system . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
Fuel system, bleeding . . . . . . . . . . . . . . . . . . . 40
Glycol . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Injectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
Leakage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
LED functions . . . . . . . . . . . . . . . . . . . . . . . . . 15
Lubricating oil system . . . . . . . . . . . . . . . . . . 28
Lubrication oil pressure sensor/monitor . . . . . 45
Lubrication pressure . . . . . . . . . . . . . . . . . . . . 24
Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Maintenance Schedule . . . . . . . . . . . . . . . . . . 27
Oil analysis . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Oil capacity . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Oil change . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Oil cleaner . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Oil filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Oil grade . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Oil level . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Oil pressure . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Oil pressure monitor, DEC2 . . . . . . . . . . . . . . 45
Preface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Prefilter, air cleaner . . . . . . . . . . . . . . . . . . . . 38
Preparations for storage . . . . . . . . . . . . . . . . . 51
Safety cartridge, air cleaner . . . . . . . . . . . . . . 39
Safety information . . . . . . . . . . . . . . . . . . . . . . 6
Safety precautions for care and maintenance . . 8
Safety precautions for handling materials . . . . 8
Safety precautions for running the engine . . . . 7
Starting the engine . . . . . . . . . . . . . . . . . . . . . 21
Stopping the engine . . . . . . . . . . . . . . . . . . . . 24
Storage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
Taking out of storage . . . . . . . . . . . . . . . . . . . 53
Technical data . . . . . . . . . . . . . . . . . . . . . . . . . 54
Temperature monitor . . . . . . . . . . . . . . . . . . . 44
Troubleshooting DEC2 . . . . . . . . . . . . . . . . . . 16
Type designations . . . . . . . . . . . . . . . . . . . . . . 10
Vacuum indicator . . . . . . . . . . . . . . . . . . . . . . 38
Valve clearances . . . . . . . . . . . . . . . . . . . . . . . 48
Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
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