Maintenance2790−1/A1
Winterthur Gas & Diesel Ltd.
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2. Preparation
1) Stop the engine, refer to the procedure
in the Operation Manual 4002−2.
2) Let the engine temperature decrease
before you start the removal procedure.
3) Set to off the pilot fuel pump.
4) Close the valves from the fuel supply
and pilot fuel supply.
5) Make sure that there is no pressure in
the cylinder.
6) Make sure that there is no pressure in
fuel rail and servo oil rail.
7) Make sure that the pipes that follow
have no pressure:
D HP pilot fuel pipe (1 or 8, Fig. 1) .
D Lubricating / cooling oil outlet
pipe (6)
D Lubricating / cooling oil inlet
pipe (5)
D Lubricating oil and fuel leakage
pipe (4)
D Control fuel pipe (3).
8) Make sure that the fuel supply and the
lubricating oil supply are closed.
9) Make sure that the drain from the pilot
injection valve (2) to the sludge tank is
open.
10) Set to off the power supply to the
solenoid valve.
3. Removal
1) Remove the applicable HP pilot fuel
pipe (1 or 8), refer to 8790−1.
2) If the valve holder must be removed,
remove the pipes (3, 4, 5 and 6).
3) Disconnect the electrical cable (7) from
the solenoid valve.
4) Remove the two Allen screws (8)
together with the distance pieces (9).
5) Remove the flange (10).
Pilot Injection Valve: Removal, Disassembly, Check, Assemble, Installation
2018−02
Fig. 1
3
4
5
6
7
1 or 8
2
WCH02881
I
I
1
8
8
9
10
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