ABB PT003888 - Fig. 24: Measuring Clearances N and R; Measuring Radial Clearances N and R; Table 42: Permissible Clearances N and R

Operation Manual / Power2 340-H / Low-pressure stage
9 Disassembly and assembly / 9.6 Measuring radial clearances N and R
© Copyright 2022 ABB. All rights reserved. HZTL4053_EN Rev.F March 2022
9.6 Measuring radial clearances N and R
Fig.24: Measuring clearances N and R
Product N [mm] R [mm]
Power2 340-H LP 0.45 ... 0.90 0.64 ... 1.00
Table42: 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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