Rocker Arm Assembly: Testing and Inspection

Valve Rocker Assembly

INSPECTION
INTAKE VALVE ROCKER ASSEMBLY
1. If the roller or valve contact surface of valve rocker arm is worn or dented excessively, replace the valve rocker assembly.
2. Check that the valve rocker arm roller rotates smoothly. If not, replace the valve rocker assembly.

EXHAUST VALVE ROCKER ASSEMBLY
1. Measure the inner diameter of valve rocker arm and outer diameter of valve rocker shaft, and confirm the difference (oil clearance) between the two values.








2. If the oil clearance exceeds the limit, replace the valve rocker arm or shaft, whichever shows the greater amount of wear.

Rocker arm inside diameter: 22.020 - 22.041 mm (0.8669 - 0.8678 inch)

Rocker shaft diameter: 21.987 - 22. 000 mm (0.8656 - 0.8661 inch)

3. If the roller or valve contact surface of valve rocker arm is worn or dented excessively, replace the valve rocker arm.
4. Check that the valve rocker arm roller rotates smoothly. If not, replace the valve rocker arm.