Valve Rocker Arm and Push Rods Cleaning and Inspection

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

1. Mark, sort, and organize the components for assembly.
   CAUTION: Refer to SAFETY GLASSES CAUTION in Cautions and Notices.
2. Clean the components with cleaning solvent.
3. Dry the components with compressed air.
   Fig 1: Valve Rocker Arm Components

   Courtesy of GENERAL MOTORS CORP.
4. 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)
5. 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 2: Pushrod Inspection Areas

   Courtesy of GENERAL MOTORS CORP.
6. Inspect the valve rocker support for excessive wear or damage.
   Fig 3: Valve Rocker Support

   Courtesy of GENERAL MOTORS CORP.