Operation Manual / A150-M56/66/57/67 - A155-M..
11 Dismantling and fitting, cartridge concept / 11.10 Radial clearances
N and R
© Copyright 2021 ABB. All rights reserved. HZTL4032_EN Rev.Q January 2021
11.10 Radial clearances N and R
Measurement of clearance R optional (only possible if gas outlet casing is dismantled).
Fig.101: 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63: Permissible clearances N and R
1. Push the feeler gauges(01) into the gap without clearance 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 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 an ABB Tur-
bocharging Service Station.
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