Operation0515−1/A1
Winterthur Gas & Diesel Ltd.
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3. Defective Injection Control Unit
3.1 Fault Identification
D Alarm indication in WECS−9520 (remote control).
D The fuel injection is cut off automatically (Inj. CUT OFF) on the related cylinder,
and a SLOW DOWN signal will be released.
D The injection control unit has a leak.
D The level switch LS3446A activates an alarm indication because of a leak at the
injection pipes (see 8019−1 Fuel leakage system).
3.2 Causes
D The fuel quantity sensor is defective.
D The fuel quantity piston 3.42 is against the stop (rail valve failure).
D The rail valve 3.76 is defective.
D There is a crack in the injection control unit.
D The injection control valve has seized.
D The fuel quantity piston is seized.
D An injection pipe is broken.
2014
Faults in High Pressure Fuel System
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