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Operation Manual / A170-M.. - A175-M..
8 Troubleshooting / 8.2 Malfunctions during operation
© Copyright 2021 ABB. All rights reserved.
HZTL4033_EN
Rev.H
July 2021
8.2
Malfunctions during operation
Lubricating oil pressure too low
WARNING
Danger of fire and explosion due to lubricating oil leaks
Leaking oil may ignite on hot surfaces. This can result in serious injuries to
personnel or fatal accidents.
u
Cordon off danger area.
u
Raise the alarm and, depending on the situation, stop the engine.
u
Seal the oil leak.
u
Soak up oil and dispose of in an environmentally compatible manner.
Wear safety gloves to protect against thermal hazards.
Possible causes
Remedy
Turbochar-
ger
Axial clearance of the rotor excessive
Contact an ABB Turbocharging
Service Station
Engine
Oil filter heavily contaminated
Clean
Oil pump in lubricating system defect-
ive
Check/replace
Manometer displays incorrectly
Replace manometer
Table 23: Malfunctions during operation – Lubricating oil pressure too low
Drop in speed
Possible causes
Remedy
Turbochar-
ger
Heavy contamination of the turbine
and/or nozzle ring
)
Damaged rotor components or bearing Contact ABB Turbocharging Service
Station
Engine
Defect on the connected cylinders in
pulse charging
Contact enginebuilder
Pipes
Defects, such as leaks, in the exhaust
gas pipes or charge air ducts
Repair
Table 24: Malfunctions during operation – Drop in speed
Increase in speed
Possible causes
Remedy
Turbochar-
ger
Light to medium contamination of the
turbine and/or nozzle ring (with 4-
stroke application)
) or contact an ABB Tur-
bocharging Service Station
Table 25: Malfunctions during operation – Speed increases
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