Operation0525−1/A1
Winterthur Gas & Diesel Ltd.
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3.3.2 Defective Exhaust Valve Control Unit
The exhaust valve control unit must be shut off as an immediate procedure if the
piston or slide rod in the exhaust valve control unit is seized.
See 0520−1 Emergency operation with exhaust valve closed, paragraph 2.
Note: With one or more exhaust valve control unit(s) cut out, you can operate
the engine only at decreased load.
1) Replace the defective exhaust valve control unit as soon as possible (see
0520−1 Start the exhaust valve control unit, paragraph 3.2 and the Maintenance
Manual 5612−1).
3.3.3 Hydraulic Pipe to Exhaust Valve
1) If a hydraulic pipe to the exhaust valve is defective, cut out the injection of the
related cylinder. See 0510−1 Cut out the injection, paragraph 1.
2) Replace the defective exhaust valve control unit as soon as possible (see
0520−1 Replace the Defective VCU or Hydraulic Pipe and the Maintenance
Manual 8460−1).
2014
Faults in Servo Oil System
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