Radial Clearances N And R - ABB HT563800 Operation Manual

8.5
8.5
Feeler gauge
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Disassembly and assembly

Radial clearances N and R

Radial clearances N and R
N and R
These are the theoretical values of the radial clearance between the
compressor wheel and the wall insert and / or turbine wheel and the gas
outlet flange.
The minimum and maximum values result from the manufacturing
tolerances of the compressor wheel and turbine wheel or the wall insert
and gas outlet flange.
Operation Manual / TPS44-F.. - TPS61-F..
8
8.5
N1 and N2 as well as R1 and R2 are
each measured at the same time using
two feeler gauges.
To measure N1 and N2, the feeler
gauges must be pushed between the wall
insert and the compressor wheel free of
play, in each case above and below.
To measure R1 and R2, the feeler
gauges must be pushed between the gas
outlet flange and the turbine free of play,
in each case above and below.
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