ABB VTC254-14 HT842908 Bedienungsanleitung Seite 97

Trouble Location
Engine
Turbine power
too high, engine
performance and
speed unaltered
Turbo-
charger
Turbo-
charger
Vibrations
Turbo-
charger
Noises on
running down,
time too short,
reluctant starting
Turbo-
charger
Leaks in the
casing
Turbo-
charger
Loss of
lubrication oil
Constant Turbo-
surging of the charger
turbocharger
Engine
Cause
- faults in the injection system
- engine performance higher than
assumed
- injection system incorrectly adjusted
- manometer indication incorrect
- nozzle ring dirty or partly obstructed
- turbine unbalance due to heavy
contamination of power turbine
- turbine blades or damping wire
damaged
- bearing defect
- bearing damaged
- rotor rubbing
- dirt in turbocharger
- foreign bodies in the tubocharger
- cracks due to thermal tension:
insufficient ventilation
insufficient cooling water
dirt in cooling water space
- piston rings (21004/25003) worn out
or damaged
- compensation ducts X obstructed
- gasket rings (32003/34003) damaged
- increased flow resistance due to:
- dirt in the chargeair cooler
or silencer
- heavy deposits of dirt in the
compressor / turbine
- exhaust gas pressure increased after
the turbine, because the boiler or
the exhaust gas silencer are dirty
- grid dirty
Call the service station or representative if the cause of the surging cannot be detected.
Remedy
- adjust correctly
- check engine performance
- adjust correctly
- replace manometer
- clean
- remove and clean,
call service station
- replace rotor
- replace bearing, seek possible
cause
- replace bearing
- call service station
- clean
- call service station, replace
damaged parts
- replace casing
- provide better ventilation
- check and top up
- clean
- replace piston ring
- clean
- replace gasket rings
- clean
- clean
- clean
- clean
see
chap. 3
chap. 5
chap. 5
chap. 5
chap. 5
chap. 8
chap. 3
chap. 8
chap. 3
chap. 5
chap. 3
chap. 5
chap. 3
chap. 3