89. Valve Rocker Arm and Push Rod Installation

Valve Rocker Arm and Push Rod Installation





Note: All gasket mating surfaces must be free of oil and foreign material. Use GM P/N 12346139 (Canadian P/N 10953463) or equivalent to clean surfaces.

Note: Room temperature vulcanizing (RTV) sealer is not to be placed under the lower intake manifold gaskets.

1. Install the lower intake manifold gaskets.




2. Coat the ends of the push rods using prelube GM P/N 12345501 (Canadian P/N 992704) or the equivalent.

Note: The intake valve push rods measure 147.51 mm (5.81 in) and the exhaust valve push rods measure 154.87 mm (6.1 in) in length.

3. Install the push rods in their original location.
4. Coat the rocker arm friction surfaces using prelube GM P/N 12345501 (Canadian P/N 992704) or the equivalent.

Note: Shims (P/N 88894006) may be required under the valve rocker arm pedestals if reconditioning has been performed on the cylinder head or its components.

5. Install the valve rocker arms in their original positions.

Caution: Refer to Fastener Caution (Fastener Caution).

Note: Thoroughly clean the fastener and tapped hole prior to installation.

6. Install the valve rocker arm bolts. Tighten the valve rocker arm bolts to 34 Nm (25 lb ft).