Removal (633CSi & 733i)
- Remove camshaft. Push rocker arms and thrust rings against springs and remove circlips from front rocker arm shafts.
- Remove countersunk slotted bolts from front of cylinder head. Thread special slide hammer tool (113 060) into end of rocker shaft, and pull shaft from cylinder head. Keep rocker arms, thrust rings, springs and washers in correct order for reassembly.
- To remove rear rocker arm shafts, remove cover from rear of cylinder head. Use same tool and procedures used for removing front rocker arm shafts.
- Check cam follower pads on rocker arms for wear. If pads are worn or loose on rocker arms, replace rocker arms.