Valve Rocker Arm and Push Rod Cleaning and Inspection

WARNING: This page is about a different car, the 2008 GMC Sierra and 2008 Chevrolet Silverado. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: Pushrod Socket, Roller Pivot & Valve Stem Tip

Courtesy of GENERAL MOTORS CORP.

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

Mark, sort, and organize the components for assembly.

CAUTION: Refer to SAFETY GLASSES CAUTION .

Clean the components with cleaning solvent.
Dry the components with compressed air.
Inspect the valve rocker arm 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.
- Valve rocker arm bolt threads for damage (4)

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.

Fig 3: Valve Rocker Support

Courtesy of GENERAL MOTORS CORP.

Inspect the valve rocker support for excessive wear or damage.