Operation0850−1/A1
Winterthur Gas & Diesel Ltd.
20/ 39
Failure text
ME servo oil pressure high (ID 19)
FCM−20 No. LED Failure ID Display
Indication #01 and #02 AI2 19 19
Cause Servo oil pressure is 15 bar more than the setpoint, engine speed is more than 8% of nominal
speed (failure signal is released after 5 seconds).
Remark: No failure is shown during the conditions that follow:
Slow turning, air run and control oil meas. fail.
Pressure controllers were not adjusted in the servo oil pumps after an overhaul.
Dirt particles prevent the function of a pressure controller.
Procedure ⇒ Clean / adjust the pressure controllers in servo oil pumps.
Failure Text ME servo oil pressure low (ID 20)
FCM−20 No. LED Failure ID Display
Indication #01 and #02 AI2 20 20
Cause Servo oil pressure is 15 bar less than the setpoint. The engine speed is more than 8% of
nominal speed (failure signal is released after 10 seconds).
Remark: No failure is shown during the conditions that follow:
Slow turning, air run, shut-down and servo oil pressure very low, control oil meas. fail.
Procedure ⇒ Do a check of the oil pressure downstream of the automatic filter.
⇒ Do a check of the control signals and cables to the servo oil pumps for correct connections and
/ or damage.
⇒ Repair or replace damaged cables.
⇒ Make sure that the safety valve 4.23 open.
⇒ The pump drive shaft 4.50 is broken (pump temperature low, no vibrations) or the pump is
defective.
⇒ The HP pipes have leaks between the collector block and the servo oil rail. Do a check for a
leakage alarm.
⇒ Repair the leaks.
⇒ If necessary, replace the related pressure controller (CV7221C, CV7223C).
Remark: In dangerous conditions, temporarily set to off the injection and exhaust valve
operation on cylinders 1 or 2 to increase the servo oil pressure
Attention: Do not set the cylinders to off in their firing order sequence. Do not operate the
engine at or near the barred speed range
Failure Text ME servo oil pump #1 fail. (ID 26)
FCM−20 No. LED Failure ID Display
Indication #03 PWM 26 26
Cause The setpoint pressure controller of the servo oil pump actuator CV7221C is more than 100
mA (failure signal is released after 30 seconds)
Procedure ⇒ In E85, set the FCM−20 #03 to off.
⇒ Do a check of the connection on the servo oil pump actuator CV7221C.
⇒ If necessary, replace the cables and connections.
⇒ Make sure that the cables and connections between pump #1 and E95.03 are correct.
⇒ If necessary, replace the servo oil pump actuator CV7221C.
⇒ In E85, set the FCM−20 #03 to on.
2014
Failures and Defects of WECS Components
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