Rocker arms and rocker arm axle

Checking the gap

Measure both axes of the intake and exhaust valve rocker arms.

1. Measure the diameter of the rocker arm axis at the location of the rocker arm of the valve of the first cylinder.



2. Set the device to zero.



3. Measure the inner diameter of the rocker arm, and check the inner surface of the rocker arm for out-of-roundness.

Rocker arm and rocker arm axle clearance:

Nominal value:

• Intake valve rocker arms: 0.017 - 0.050 mm
• Exhaust valve rocker arms: 0.018 - 0.054 mm
• Limit value: 0.08 mm

4. Repeat measurements for all valves.

If the gap is greater than the maximum permissible value, replace the rocker arm axle.