Rocker Arm Shaft Assembly
- Check rocker arm shaft, rocker arm and bushing for wear or damage. Replace any worn parts. Pay special attention to position and number of all spring washers.
- Measure diameter of rocker shaft and inner diameter of rocker arm to determine oil clearance. Standard outer diameter of rocker shaft is .7080-.7088" (17.982-18.003 mm). Standard inner diameter of rocker arm is .7093-.7100" (18.016-18.034 mm). Standard oil clearance is .0005-.0020" (.013-.052 mm).
- If rocker arm surface is noticeably worn, replace rocker arm. If worn slightly in a stepped shape, use a valve refacer to correct. Replace rocker shaft spring washers if worn excessively.