4 Repair
4.1.4 Fitting new Bearings and Seals
70 3HAC026320-001 Revision: A
O-rings
Action
1.
Check the O-ring grooves. The grooves must be geometrically correct, without pores
and free of dust and grime.
2.
Check the O-ring for surface defects and burrs, and check that it has the correct
shape, etc.
3.
Make sure the correct O-ring size is used.
4.
Tighten the screws evenly.
5.
Defective O-rings and O-ring grooves must not be used.
6.
If any of the parts fitted are defective, they will cause leakage. Grease the O-ring with
Shell Alvania WR2 (ABB’s art. No. 3537-1) before fitting it.
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