76. Valve Rocker Arm and Push Rod Installation

Valve Rocker Arm and Push Rod Installation





Important: Be sure to keep parts in order. Parts must be reinstalled into the original location and position.

1. Install the valve pushrods.





Important: Be sure that the arrow on the valve rocker arm support is in the up position.

2. Install the valve rocker arm supports.





3. Apply prelube GM P/N 12345501 (Canadian P/N 992704) or equivalent, to the following valve rocker arm contact surfaces:
^ Valve pushrod socket (1)
^ Roller pivot (2)
^ Valve stem tip (3)





4. Install the valve rocker arm assemblies as follows:
4.1. Finger start the bolt at location (1)
4.2. Finger start the bolt at location (2)
4.3. Finger start the bolt at location (3)
4.4. Finger start the remaining valve rocker arm bolts





5. Rotate the crankshaft balancer to position the crankshaft balancer alignment mark (1) 57-63 degrees clockwise or counterclockwise from the engine front cover alignment tab (2).

Notice: Refer to Fastener Notice in Service Precautions.

Important: Once the valve rocker arm assemblies are installed and properly torqued, no additional valve lash adjustment is required.

6. Tighten the valve rocker arm bolts
^ Tighten valve rocker arm bolts to 30 Nm (22 ft. lbs.).