Maintenance8752−1/A1
Winterthur Gas & Diesel Ltd.
2/ 10
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.
WARNING
Injury Hazard: 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.
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.
Note: The procedures to remove, grind and install the HP fuel pipes (2, 4, 5 and
7 Fig. 1) are almost the same. The procedures that follow in this
paragraph and paragraph 2 to paragraph 4, apply to the HP fuel pipes (9.
5 and 7).
1) Stop the engine (see the Operation Manual 4002-2).
2) Set to off the fuel supply pump.
3) Set to off the trace heating.
4) If an HP fuel pipe must be replaced, remove the insulation from the applicable
HP fuel pipe (2, 4, 5, 7).
5) If necessary, disconnect the trace
heating pipes.
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 and Installation
2
1
4
3
5
SF
3.0 mm
WCH02957
III - III
Fig. 2
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