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Rocker Arm Assembly: Service and Repair





Valve Rocker Arm and Push Rod Replacement

Special Tools
- J 36660-A

Removal Procedure

1. Remove the valve rocker arm cover(s). Refer to Valve Rocker Arm Cover Replacement - Left Side 13. Valve Rocker Arm Cover Removal - Left and/or Valve Rocker Arm Cover Replacement - Right Side 14. Valve Rocker Arm Cover Removal - Right.






Important: Keep the components separated in order to install the components in the same location.

2. Remove the rocker arm bolt(s).

Important: Retain the pushrods in the order that they are removed. Keeping the components in order will ensure installation into the original position.

3. Remove the valve rocker arm(s) and the pushrod(s).

Installation Procedure






1. Coat the ends of the push rods and rocker arm friction surfaces using prelube GM P/N 12345501 or GM P/N 88862586 (Canadian P/N 992704 or Canadian P/N 88862586) or the equivalent.

Important: The intake valve push rods measure 144 mm (5.75 in) in length, (yellow). The exhaust valve push rods measure 152.5 mm (6.0 in) in length, (green).

2. Install the push rods in their original location.






3. Install the valve rocker arm(s) and the bolt(s). Refer to Valve Rocker Arm and Push Rod Installation 78. Valve Rocker Arm and Push Rod Installation.
4. Install the valve rocker arm cover(s). Refer to Valve Rocker Arm Cover Replacement - Left Side 82. Valve Rocker Arm Cover Installation - Left and/or Valve Rocker Arm Cover Replacement - Right Side 81. Valve Rocker Arm Cover Installation - Right.
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