Operation Manual / 4 Product description / A100-L
7 Troubleshooting / 7.3 Surging of the turbocharger
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HZTL4034_EN
Rev.R
October 2020
Charge air pressure too high
Engine performance and engine speed unchanged, suction condition normal
Possible causes
Remedy
Turbochar-
ger
Manometer display not correct
Replace manometer
Engine
Malfunction in the injection system
Repair or contact manufacturer
Injection mistimed
Set correctly
Engine performance higher than indic-
ated
Check engine performance
Table 22: Malfunctions during operation – Charge air pressure too high
7.3
Surging of the turbocharger
Surging of the turbocharger
Possible causes
Remedy
Turbocharger
Filter silencer or diffuser contamin-
ated
)
Heavy dirt deposits in the turbine or
in the nozzle ring
Engine
Protective grating in front of the tur-
bocharger contaminated or damaged
Clean/replace
Charge air
cooler
Cooler contaminated
Clean
Charge air duct blocked
Table 23: Surging of the turbocharger
CAUTION
Continuous or periodic surging
If the turbocharger surges continuously or periodically, parts of the tur-
bocharger may be damaged.
u
Gradually reduce the engine load.
u
Have the cause clarified and remedied immediately by an ABB Turbochar-
ging Service Station.
u
Have parts assessed for damage and, if necessary, replaced by an ABB
Turbocharging Service Station.
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