VALVE RECONDITIONING CONTINUED
1. Rotator can be identified by a snap ring on bottom. Rotator can be disassembled for cleaning and inspection
by removing snap ring. Individual parts are not furnished separately and a new rotator assembly must be
installed if any part is worn or damaged.
When reassembling rotator, Belleville washer must be installed with concave side toward
snap ring (pitch of washer down against spring).
2. Check valve rotators for operation. A valve rotator in free state (not assembled in engine) may rotate in either
direction, or may not rotate at all and still be satisfactory for use.
3. To properly test a valve rotator for rotation, a valve spring load must be applied to rotator. This can be done in
a spring tester or assembled in an engine.
4. When using a spring tester, place valve spring (Figure 23, Item 1), with rotator, in a tester. Place a bearing ball
between rotor cap and ram of spring tester. By compressing valve spring, valve rotator can be observed as it
Figure 23. Testing Valve Rotator.