Valve Spring: Service and Repair

Fig. 9 Valves, Valve Seals & Valve Springs:

REMOVAL
1. Disconnect battery ground cable, then remove rocker cover.
2. With engine cold, remove spark plug and clean debris from plug recess.
3. Remove rocker arm and pushrod on cylinders to be serviced.
4. Install air line adapter tool No. J 23590 or equivalent in spark plug thread and apply compressed air to hold valves in place.
5. With valve spring compressor tool No. J 5892-B on 1990 models, tool No. J 5892-C on 1991--92 models or equivalents, compress valve spring and remove valve lock and cap, Fig. 9.
6. Remove spring, valve stem oil seal and shim.

INSTALLATION
1. Install shim if required, then new valve stem oil seal.
2. Set valve spring and cap in place.
3. Using valve spring compressor tool No. J 5892-B on 1990 models, tool No. J 5892-C on 1991-92 models or equivalents, compress valve spring.
4. Install valve locks and release compressor. Make sure locks seat properly in the upper groove of the valve stem. Grease may be used to hold the locks in place while releasing the compressor tool.
5. Install spark plug, pushrods, rocker arms and rocker cover.