Maintenance8752−1/A1
Winterthur Gas & Diesel Ltd.
2/ 11
1. Preparation
WARNING
Injury Hazard: The fuel system has high pressure. Replace a
defective HP fuel pipe only when the engine has stopped. You
must obey the data given in the Operation Manual 0520-1.
1) Stop the engine (see the Operation Manual 4002-2).
2) Set to off the fuel supply pump.
WARNING
Injury Hazard: Hot Component. Always put on gloves and safety
goggles when you do work on hot components. When screws and
plugs are opened, steam or fuel can come out and cause injury.
3) Set to off the trace heating.
4) If the HP fuel pipes must be replaced, remove the insulation from the HP fuel
pipes (1, Fig. 2).
5) If necessary, disconnect the trace heating pipes.
CAUTION
Damage Hazard: Make sure
that you do not damage
the sealing faces or the HP
fuel pipes. Do not apply
lateral force to the HP fuel
pipes and the flanges.
6) Put an oil tray under the applicable fuel
pump.
7) Loosen the four screws (2, Fig. 2) on
the flange (5) a maximum of three
turns.
Note: The fuel will drain through the
drain bore (3) into the fuel leakage
pipe.
8) Move the HP fuel pipe (1) up. Make
sure that there is a distance of
approximately 3.0 mm between the fuel
pump cover (4) and the HP fuel
pipe (1).
2015
HP Fuel Pipe: Removal, Grind the Sealing Faces and Installation
2
1
4
3
5
SF
Fig. 2
IV - IV
3.0 mm
WCH02293
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