ABB TPS 48D01 - Radial Clearances N and R

Operation Manual / TPS48-D/E.. - TPS61-D/E..
Disassembly and assembly
8
Radial clearances N and R
8.5
Page 110
April 2015 HZTL2410_EN Revision D
Radial clearances N and R
8.5
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.
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.
8.5
Feeler gauge
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