Operation
8016−1/A1
Winterthur Gas & Diesel Ltd.
9/ 10
5. Servo Oil Rail
5.1 Pressurization
The servo oil pumps (17) (see Fig. 3) supply high pressure oil to the HP servo oil
pipes (11). The oil pressure opens the non-return valves and oil flows into the servo
oil rail. The oil then flows into the VCU and hydraulic pipes (10) (see also
2751−1 Exhaust Valve).
1) Make sure that the stop valve downstream of automatic filter is open.
2) Start the bearing oil pump.
3) Set to on the servo oil service pump (28).
4) Do a function check of the exhaust valve movement.
5) Do a leak test of the servo oil system.
5.2 Pressure Release
To release the pressure in the servo oil rail, do the procedure that follows:
WARNING
Injury Hazard: Always put on gloves and safety goggles when you
do work on hot components. When you loosen the screw plugs,
high pressure oil can come out as a spray and cause injury.
1) Carefully loosen the screw plug (1) a maximum of two turns (see Fig. 6).
WARNING
Injury Hazard: If the screw plug (1) stays open after the servo oil
pumps start, pressure in the oil rail cannot increase and high
pressure oil can come out.
2) When the pressure in the servo oil rail is released, tighten the screw plug (1).
2015-03
Lubricating Oil System
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