ABB HT611036 - Fig. 103: Measuring Clearances N and R; Table 65: Permissible Clearances N and R

Operation Manual / A150-M56/66/57/67 - A155-M..
11 Dismantling and fitting, cartridge concept / 11.10 Radial clearances N
and R
© Copyright 2022 ABB. All rights reserved. HZTL4032_EN Rev.S February 2022
11.10 Radial clearances N and R
Measurement of clearance R optional (only possible if gas outlet casing is dismantled).
Fig.103: Measuring clearances N and R
Product N [mm] R [mm]
A150-M 0.64 ... 1.09 0.71 ... 1.13
A155-M 0.78 ... 1.29 0.86 ... 1.33
Table65: Permissible clearances N and R
1. Push the feeler gauges(01) into the gap without clearance, and measure simultaneously
at the top (N1) and the bottom (N2).
2. Calculate clearance N and compare it with the permissible values in the table.
3. Push the feeler gauges(01) into the gap without clearance, and measure simultaneously
at the top (R2) and the bottom (R1).
4. Calculate clearance R and compare it with the permissible values in the table.
CAUTION
Clearances outside the tolerance
Serious damage to engines or property can be caused by clearances outside
the tolerance and excessively worn parts.
u Have the components assessed and, if necessary, replaced by a Turbo
Systems service station.
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