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Fig. Engine compartment
1. Fuel prefilter
4
3
5
Fig. Fuel pre-filter
2. Fuel pre-filter
4. Fuel valve
5. Drain valve
6. Air vent screw
2023-05-26
Pre-fuel filter - Draining
Close the fuel valve (4) by turning it to position 3.
Open the drain valve (5) at the bottom of the
water separator.
Drain any water.
If no water comes out, loosen the air vent screw (6)
at the top of the water separator by turning it
counterclockwise 2 - 3 turns.
If still no water comes out, open the fuel valve (4).
After draining the water separator,
hand-tighten the drain valve.
Securely tighten the bleed screw (6) if it is loose.
6
Open the fuel valve (4).
Prime the diesel fuel system
and check for any fuel leakage.
The fuel system must be primed in certain conditions:
- Before starting the engine for the first time
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- After running out of fuel and refilling the fuel tank
- After fuel system maintenance such as changing the
fuel filter and draining the water separator, or replacing
a fuel system component.
Priming the fuel system:
1. Turn the key to the ON position for 10 – 15 seconds.
This allows the electric fuel pump to prime
the fuel system.
2. Never use the starter motor to start the engine while
priming the fuel system. This can overheat the starter
motor and damage the coils, pinion and/or gear.
4812165001.pdf
Maintenance, 9000h
Be sure to perform priming. If air is mixed to the
Be sure to perform priming. If air is mixed to the
fuel, seizure to the supply pump and the injector
fuel, seizure to the supply pump and the injector
may result.
may result.
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