Valve Rocker Arm and Shaft Clean and Inspect

- Tools Required
- J7872 Magnetic Base Dial Indicator Set

Rocker Arm Shaft Inspection





1. Place the rocker arm shaft in two V-Blocks and use a dial indicator to measure the runout of the rocker arm shaft.
Rocker Arm Shaft Runout Maximum Runout = 0.20 mm (0.008 inch)
2. If the measured runout exceeds the specifications, replace the rocker arm shaft.

Rocker Arm Inspection





1. Inspect the tips and cam-riding face (3) of the rocker arms for excessive wear.
2. Replace any rocker arm that shows excessive wear.