WinGD X72 - Servo Oil Leakage; Leakage and Oil Drains

Operation8016−1/A1
Winterthur Gas & Diesel Ltd.
6/ 10
Key to Fig. 3
1 Oil pipe − bearing drive, supply 16 Supply unit
unit, servo oil 17 Servo oil pump
2 Supply pipe − cooling oil, injectors 18 Leakage inspection points −
3 Supply pipe servo oil pipes
4 Cylinder lubrication drive 19 Level switch LS2055A
5 Supply pipe − VCU 20 Flow sensors FS2061−62A
6 Leakage pipe − VCU 21 Pressure safety valve
7 Cooling oil supply − fuel injection valve 22 Main oil collector
8 Drain from exhaust valve 23 Leakage oil outlet DE
9 Cooling oil return − fuel injection valve 24 Leakage oil outlet FE
10 Hydraulic pipe − exhaust valve 25 Control valve CV2003C
11 HP servo oil pipes (injection valve cooling)
12 Leakage oil pipe 26 Ball valve
13 Supply pipe − supply unit 27 Intermediate piece
14 Supply pipe − servo oil pump 28 Servo oil service pump
15 Pressure reducing valve OI Inlet from main oil supply
4. Servo Oil Leakage
4.1 Leakage and Oil Drains
Some of the oil flows from the oil drains OD through the servo oil return in the plant
and back to the main oil supply (see Fig. 2).
Leakage oil from the HP servo oil pipes (11) drains through the leakage oil pipe (12).
Leakage oil from the exhaust valves flows through the leakage oil pipe (8) to the main
collector (22) then through the leakage oil outlets (23) and (24). This leakage oil then
flows back to the plant.
The level switch LS2055A monitors leakages from the HP servo oil pipes.
Leakage oil from inside the rail unit, flows through a drain to the sludge tank.
If there is a large quantity of leakage oil, the related alarm is activated. See the table
below:
Level switch Monitored components
LS3444A Monitors fuel and oil leakage from the rail unit (see 8019-1 Fuel
System, Fig. 1). The leakage flows to the sludge tank.
LS2055A Leakages from HP servo oil pipes.
2015-03
Lubricating Oil System