Operation Manual / TPS50
6 Troubleshooting / 6.3 Malfunctions during operation
© Copyright 2021 . All rights reserved.
HZTL2401_EN
Rev.A
September 2021
Possible causes
Elimination
Charge air
cooler
Cooler contaminated
Clean it
Charge air duct blocked
CAUTION
Prolonged or periodic surging
Possible damage to components, such as the compressor wheel, tur-
bine blades, bearings and filter silencer
u
Have the cause clarified immediately by an ABB Turbocharging ser-
vice station and rectified.
u
Have components inspected for damage and, if necessary, replaced
by an ABB Turbocharging service station.
Sporadic surge blows
Surging of the turbocharger can occur during certain operating condi-
tions such as when reducing the engine performance quickly when man-
oeuvring. At the same time, the flow direction in the compressor is mo-
mentarily reversed. Such sporadic surge blows do not impair the safe
operation of the turbocharger.
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A surge blow is accompanied by a loud bang and escape of hot air
from the filter silencer.
6.3 Malfunctions during operation
Lubricating oil pressure too low
Possible causes
Elimination
Engine
Oil filter heavily contaminated Clean it
Defective oil pump in lubricat-
ing system
Check / replace it
Manometer display wrong
Replace the manometer
Turbochar-
ger
Rotor axial clearance too large Contact an ABB Turbocharging
Service Station
Reduction in speed
Possible causes
Elimination
Engine
Defects of connected cylinders
when pulse charging
Contact the enginebuilder
Turbochar-
ger
Heavy contamination of the
turbine
Clean it
Damaged rotor components or
bearing
Contact an ABB Turbocharging
Service Station
Pipes
Defects such as leaks in the ex-
haust gas pipes or charge air
ducts
Make repairs
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