DMN-WESTINGHOUSE AL-BL Rotary Valves
Code: AL-E.B.01.B 11-2012
34
Shim thickness clarification
Rotate rotor freely in the valve bore.
Fig. 3.3.4.3.1 Shim thickness clarification.
The special bearings will locate themselves centrally in their recesses when this has
been achieved check the clearances between inner spacer and the rotor shaft
shoulder at both ends of the rotor.
- Loosen the locking nut (222) remove the safety ring (221) and spacer ring
(202).
- Remove the bearing housing assembly countersunk screws (160) fit two of
these bolts in the tapped jacking holes provided in the bearing housing (108)
and remove.
- Remove inner spacer ring, place required shim onto the rotor shaft followed by
the inner spacer ring. Press bearing housing assembly and secure.
- Fit spacer ring, retainer ring (221) and the locknut (222), tighten locknut and
secure.
- Check that both end clearances are equal.
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