Operation
0525−1/A1
Winterthur Gas & Diesel Ltd.
3/ 4
3.3 Procedures
3.3.1 Rail Valve − Replace
Replace the defective rail valve as soon as possible.
1) Stop the engine.
2) Make sure that the servo oil service pump is set to off.
3) Set to off the main bearing oil supply.
4) Carefully loosen the drain screw (7, Fig. 1) to release the pressure in the servo oil
rail (2). Make sure that the servo oil rail (2) has no pressure.
5) Disconnect the two electrical connections (6) from the rail valve (4).
6) Remove the four screws (5), then remove the rail valve (4).
7) Make sure that the three O-rings are installed in the new rail valve and their
surfaces are clean.
8) Apply Never-Seez NSBT-8 to the threads of the four screws (5).
9) Put the rail valve (4) and screws (6) in position on the exhaust valve control
unit (3).
10) Make sure that the bore positions are aligned.
11) Torque the four screws (6) to 2.5 Nm (see 5612−1 Exhaust Valve Control Unit in
the Maintenance Manual).
12) Torque the drain screw (7) to 200 Nm.
13) Connect the electrical connections (6) to the rail valve (4). Make sure that the
electrical connections are tight.
I
4
010.153/02
6
6
1
4
8
7
2
018.063/09
DRIVING END
5 5
I
3
Fig. 1: Servo oil and fuel rail
1 Fuel rail 3.05 5 Screw
2 Servo oil rail 4.11 6 Electrical connection
3 Exhaust valve control unit 4.10 7 Drain screw 4.82
4 Rail valve 3.76 8 Rail unit
2014
Faults in Servo Oil System
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