Measuring Clearance A And B; Fig. 66: Measuring Clearance A And B; Table 47: Permissible Clearances A And B - ABB HT611072 Operation Manual

Operation Manual / A150-M56/66/57/67 - A155-M..
10 Dismantling and fitting with removed air inlet and gas outlet / 10.9

Measuring clearance A and B

10.9

Measuring clearance A and B

Measure and record clearances A and B after the removal and before the installation of
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the cartridge group.
Attach the dial indicator and align it for the respective clearance as per the illustration.
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Fig. 66: Measuring clearance A and B
Product
A150-M
A155-M
Table 47: Permissible clearances A and B
1. Move the rotor to and fro up to the stop. In order to obtain a correct measurement, elev-
ate the turbine a little.
2. Measure clearance A and compare it with the permissible values in the table.
3. Raise the compressor and push the turbine down at the same time.
4. Raise the turbine and push the compressor down at the same time.
5. Measure clearance B 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.
Have the components assessed and, if necessary, replaced by a Turbo
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Systems service station.
© Copyright 2022 ABB. All rights reserved.
A [mm]
0.12 ... 0.22
0.12 ... 0.22
HZTL4032_EN
B [mm]
0.72 ... 1.28
0.79 ... 1.40
Rev.S February 2022