Valve Rocker Arm and Push Rod Cleaning and Inspection

WARNING: This page is about a different variant/trim than selected.

Fig 1: Cleaning & Inspecting Rocker Arm

Courtesy of GENERAL MOTORS CORP.

CAUTION: Refer to Cleaning Solvent Caution .

CAUTION: Refer to Safety Glasses and Compressed Air Caution .

IMPORTANT: Parts that are to be reused must be marked, sorted, and organized for assembly.

Clean the components with cleaning solvent.
Dry the components with compressed air.
Inspect the valve rocker components for the following:
- Valve rocker arm valve pushrod socket contact surface (1)
  The contact surface must be smooth with no scoring or excessive wear.
- Valve rocker arm roller pivot for binding or damage (2)
- Valve rocker arm valve stem contact surface (3)
  The contact surface should be smooth with no scoring or excessive wear.

Fig 2: Pushrod Inspection Areas

Courtesy of GENERAL MOTORS CORP.

Inspect the valve pushrods for the following:
- Restriction of the oil passage (1)
- Wear or scoring of the end contact surfaces (2)
  The end contact surfaces must be smooth with no scoring or excessive wear.
- Shaft for bends (3)
  Roll the valve pushrod on a flat surface to determine if the valve pushrod is bent.