Operation
8016−1/A1
Winterthur Gas & Diesel Ltd.
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4.2 Leakage Inspection Points
4.2.1 HP Servo Oil Pipes
If there is a leak in the HP servo oil pipes, the leakage inspection points (18, Fig. 3)
are used to find the pipe that has the leakage.
4.2.2 Exhaust Valve Control Unit
If oil flows from the leakage inspection point (3, Fig. 4) in the VCU, the related
hydraulic pipe (1) has a leak (see also 0520−1 Operation with Exhaust Valve Control
Unit Cut Out).
2
4
WCH02534
1
3
I
II
I
II II
3
4
5
WCH02534
WCH02533
Fig. 4: Leakage Inspection Point − VCU
1 Hydraulic pipe 4 Valve control unit (VCU)
2 Servo oil rail 5 Holder
3 Leakage inspection point
Note: If one of the two HP servo oil pipes has a leak (and thus is unserviceable),
the engine can operate fully until the defective pipe is replaced.
4.2.3 Procedure
If the level switch (LS2055A) activates an alarm, do the procedure that follows:
Note: Each of the two HP servo oil pipes (2, Fig. 5) has a screw plug (5) at the
leakage inspection points.
2015-03
Lubricating Oil System
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