
OPERATION
EN
SI-21-06-R1 (11/2021)
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Step 14
Step 13
Rotor Shaft Polishing Process (Light
Contact Marks Only)
Wrap the 2/0 sandpaper/cloth
around shaft.
Polish Shaft:
Use a fine abrasive paper/cloth 2/0 paper to clean
the outside diameter of the shaft as shown in
Figure 1-14A. Using the 2/0 abrasive paper/cloth,
polish the shaft removing the deposition marks.
Polish by rotating the shaft by hand - Do not polish
the shaft in a linear motion creating flat spots on
the shaft.
Figure 1-13
Figure 1-14A
Figure 1-14
Clean Air Bearing Jets After
Polishing Operation:
Using an approved compressed solvent with exten-
sion tube and face shield. Spray solvent through
each air bearing jet to make sure they are clean
and free of debris. Plugged holes will result in pre-
mature turbine motor failure.