Axial Clearance A And Radial Clearance B; Table 38 Permissible Clearances A And B - ABB A135-M56 Operation Manual

Operation Manual / 4 Product description / A130-M.. - A145-M..
8 Dismantling and fitting
8.11

Axial clearance A and radial clearance B

Clearances outside the tolerance
Serious damage to engines or property can be caused by clearances out-
side the tolerance and excessively worn parts.
CAUTION
Have the components assessed and, if necessary, replaced by an ABB

Turbocharging Service Station.
Measure and record clearances A and B after the removal and before the installation of the

cartridge group.
Attach the dial indicator and align it for the respective clearance as per the illustration.

Figure 41: Measuring clearance A and B
Product
A130
A135
A140
A145
Table 38: Permissible clearances A and B
1. Move the rotor to and fro up to the stop. For an accurate measurement, elevate the turbine
a little.
2. Measure clearance A and compare it with the permissible values in the table.
3. At the same time, elevate the compressor and push the turbine down.
4. At the same time, elevate the turbine and push the compressor down.
5. Measure clearance B and compare it with the permissible values in the table.
© Copyright 2016 ABB. All rights reserved.
A [mm]
0.08 ... 0.16
0.10 ... 0.18
0.12 ... 0.21
0.15 ... 0.25
HZTL4031_EN
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B [mm]
0.47 ... 1.00
0.58 ... 1.16
0.70 ... 1.37
0.88 ... 1.56
Revision D June 2016