47. Valve Rocker Arm and Push Rod Cleaning and Inspection

Valve Rocker Arm and Push Rod Cleaning and Inspection

Warning

Bodily injury may occur if the cleaning solvent is inhaled or exposed to the skin.

1. Clean the valve rocker arms and push rods in cleaning solvent.
Warning: Refer to Safety Glasses Warning (Safety Glasses Warning).

2. Dry the valve rocker arms and push rods with compressed air.




3. Inspect the valve rocker arms for the following conditions:

* Excessive wear at the valve contact or push rod socket area (1)
* A loose or damaged pin (2)
* A worn or damaged roller bearing (2)
The roller should rotate freely with no binding or roughness.
* The bolt threads for damage





Note: Keep the push rods in order. The intake and exhaust are different lengths.

4. Inspect the push rods for the following conditions:

* Straightness using a straight edge (1)
* Excessive wear on the push rod ends (3)
* Clogging of the oil passage (2)