Operation Manual / Power2 340-H / High-pressure stage
6 Operation and service / 6.2 Service work
© Copyright 2022 ABB. All rights reserved. HZTL4054_EN Rev.F March 2022
6.2.4 Service work every 10000 ... 20000 hours
The rotor and bearing parts must be checked and assessed by a Turbo Systems service sta-
tion.
u Remove low-pressure and high-pressure stage from the engine and dismantle according
to chapter Disassembly and assembly. Measure clearances.
u Clean nozzle ring and casing and check for cracks and erosion/corrosion.
Additional measures in conjunction with the high-pressure stage:
u Replace gaskets every time after disassembly.
u Check bellows between air-inlet casing and compressor casing for cracks and clean (see
also chapter Cleaning the high-pressure stage bellows (if present) →60).
6.2.5 Service work according to specifications on the rating
plate
The following work must be carried out by a Turbo Systems service station:
¡ Replacement of the bearing parts
¡ Replacement of the turbine and the compressor.
6.2.6 Entries in the engine logbook
The monitoring of the engine enables conclusions to be drawn on the behaviour of the low-
pressure and high-pressure stage.
The following operating data and measured values must be entered regularly in the engine
logbook of the enginebuilder:
¡ Performance and speed of the engine
¡ Air intake temperature
¡ Pressure of the charge air
¡ Pressure loss in the charge air cooler and intercooler
¡ Lubricating oil pressure and lubricating oil temperature
If present:
¡ Speed of low-pressure and high-pressure stage
¡ Air temperature before and after the compressor and after the charge air cooler
¡ Exhaust gas temperature before and after the turbine
¡ Atmospheric humidity of the suction air (before the low-pressure stage)
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