GM Full-Size Trucks 1980-1987 Repair Guide

Rocker Arms

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REMOVAL & INSTALLATION



Gasoline Engines

See Figures 1, 2 and 3

  1. Remove the valve cover.
  2.  
  3. Remove the rocker arm nuts, then remove the rocker pivots.
  4.  



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Fig. Fig. 1: Remove the rocker arm nut and pivot



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Fig. Fig. 2: With the nut and pivot out of the way, the rocker arm may be removed

  1. Remove the rocker arms.
  2.  

Remove each set of rocker arms (one set per cylinder) as a unit.

To install:
  1. To install, position a set of rocker arms (for one cylinder) in the proper location.
  2.  

Install the rocker arms for each cylinder only when the lifters are off the cam lobe and both valves are closed.

  1. Coat the replacement rocker arm and pivot with SAE 90 gear oil and install the pivots.
  2.  
  3. Loosely i