Rocker Arm Assembly: Service and Repair

Valve Rocker Arm and Push Rod Replacement

^ Tools Required
- J 36660-A Torque Angle Meter

Removal Procedure





1. Remove the left valve rocker arm cover.
2. Remove the right valve rocker arm cover.
3. Remove the valve rocker arm pedestal retaining bolts.
4. Remove the pedestal.

Important:
^ Place the assemblies on a clean surface.
^ Store the components in order. Reassemble the components in the same location and with the same mating surfaces as when removed.

5. Remove the rocker arm assembly.
6. Remove the pushrods.
7. Clean the bolts of all thread adhesive.
8. Clean and inspect the valve rocker arms and pushrods.

Installation Procedure





1. Install the pushrods.
2. Install the valve rocker arm assembly.
3. Install the pedestal.

Notice: The two bolts which fasten the lower intake manifold to the cylinder head are accessible only after the upper intake is removed. The bolts are located in the right front and left rear corners of the lower intake manifold. Remove the upper intake manifold to service the lower intake.

4. Apply GM P/N 12345493 (Canadian P/N 10953488) threadlocker compound or equivalent to the valve rocker arm bolt threads.

Notice: Refer to Fastener Notice in Service Precautions.

5. Install the valve rocker arm pedestal retaining bolts.
^ Tighten the valve rocker arm bolts to 15 Nm (11 ft. lbs.) + 90 degrees using J 36660-A.
6. Install the left valve rocker arm cover.
7. Install the right valve rocker arm cover.
8. Listen for valve train noise.