Rocker Arm Assembly: Service and Repair

REMOVAL PROCEDURE
1. Remove the rocker arm covers.

IMPORTANT: Place the valve rocker arms and pushrods in a rack so they can be reinstalled in the same locations from which they were removed.





2. Remove the valve rocker arm bolts (2).
3. Remove the valve rocker arms (1).





4. Remove the valve rocker arm retainer (1).





5. Remove the pushrods (1).

INSTALLATION PROCEDURE

^ Tools Required
- J36660 Torque Angle Meter

IMPORTANT: When installing valve rocker arms and pushrods, coat the bearing surfaces with prelube GM P/N 12345501 or equivalent. Install these components in the locations from which they were removed.





1. Install the pushrods (1).





2. Install the valve rocker arm retainer (1).





3. Install the valve rocker arms (1).
4. Apply GM P/N 12345493 or equivalent thread lock adhesive to the valve rocker arm bolt threads.

NOTICE: Refer to Fastener Notice in Service Precautions.

NOTICE: Refer to Permanently Stretching Bolt Notice in Service Precautions.

5. Install the valve rocker arm bolts (2).
^ Tighten the valve rocker arm bolts (2) to 15 Nm (11 ft. lbs.) + 90 degrees using J36660.

6. Install the rocker arm covers.