WinGD X72 - Servo Oil System; Exhaust Valve Drive

Operation4003−1/A1
Winterthur Gas & Diesel Ltd.
8/ 11
4.5.2 Test of Auxiliary Blower from LDU20 Local
1) On the MCM-11, disconnect terminal X33.
2) Start the auxiliary blowers.
Note: Command and feedback of auxiliary blowers must continue to operate.
3) If the auxiliary blowers do not operate, do a check of the wiring to the starter box.
4) On the MCM-11, connect terminal X33.
5) On the IOM-10, disconnect terminal X11.
6) Start the auxiliary blowers.
Note: Command and feedback of auxiliary blowers must continue to operate.
7) If the auxiliary blowers do not operate, do a check of the wiring to the starter box.
8) On the IOM-10, connect terminal X11.
4.6 Servo Oil System
1) Start the main bearing oil pump and make sure that the operating pressure is
correctly adjusted.
2) Start the servo oil service pump 20−8445_E0_1.
3) Adjust the pressure in the servo oil rail 20-5610_E0_6 to between 90 bar and
100 bar. The LDU−20 shows the related value.
4.7 Exhaust Valve Drive
1) In the LDU−20, get the EXHAUST VALVES page, (see 4002−2, paragraph 3.8
Exhaust valve).
2) In the Exh. valve pos. Column, use the rotary button to set the Cylinder 1 value to
1. This will manually open the exhaust valve 50-2751_CX_1 of cylinder No. 1
3) When the exhaust valve opens, record the value shown in the Open/close
deadtimes column.
Note: You must record this value immediately after the exhaust valve opens,
because the valve automatically closes slowly.
4) Close the exhaust valve 50-2751_CX_1 of cylinder No. 1.
5) When the exhaust valve closes, record the value shown in the Open/close
deadtimes column.
6) Do steps 1) to 5) above for each exhaust valve.
Note: The values shown must be approximately the same for all cylinders. If the
values are not the same, the exhaust valve is not fully open, or the
sensors are defective.
7) In the LDU−20, Exh. valve pos. column, use the rotary button to set the value to 0
for each exhaust valve.
2015-03
Engine Control