Rocker Arm-to-Rocker Arm Shaft Clearance Inspection

Rocker Arm-to-Rocker Arm Shaft Clearance Inspection

- Tools Required
- J 26900-5 Vernier Caliper
- J. 26900-2 Outside Micrometer





1. Using an outside micrometer, measure the diameter of the rocker arm shaft.
Standard Rocker Arm Shaft Diameter 15.969 - 15.984 mm (0.6287 - 0.6293 inch)
2. Using a Vernier caliper, measure the inside diameter of the rocker arm.
Standard Rocker Arm Inside Diameter 15.985 - 16.005 mm (0.629 - 0.630 inch)
3. Subtract the rocker arm inside diameter from the rocker arm shaft outside diameter and this will determine the rocker arm-to-rocker arm shaft clearance.
Standard Rocker Arm-to-Rocker Arm Shaft Clearance
0.001 - 0.036 mm (0.0001 - 0.0014 inch)
4. If the measured clearance exceeds the specifications, replace the rocker arm components as necessary.