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Home › Chevrolet › 1976 › Luv Automatic Trans › Repair and Diagnosis › Engine Mechanical › Mechanical › 4 Cylinder Engine › Rocker Arm Assembly

Rocker Arm Assembly

  1. Loosen rocker shaft bracket nuts in sequence, starting with outer brackets. Remove the spring from the shaft, and then remove rocker arm brackets and arms keeping parts in order for reassembly.
  2. Inspect rocker arm shaft for wear damage or excessive runout. If runout is greater than 0.0156" (0.396 mm), replace shaft. Diameter of shaft is 0.8071" (20.5 mm). Replace shaft if diameter is less than 0.8012" (20.35 mm).
  3. To install, apply engine oil to rocker arm shaft, rocker arms, and valve stems. Install longer shaft on exhaust side and shorter shaft on intake side. Aligning marks on shafts are turned to front side.
  4. Assemble brackets and arms to shafts, so cylinder number (on upper face of bracket) is pointed to front of engine. Align No. 1 shaft bracket with mark on the intake and exhaust valve side rocker arm shafts. Place springs between shaft bracket and rocker arm. Punch mark on rocker arm shafts must be turned upward. Tighten shaft bracket nuts.
NOTE: Hold rocker arm springs with a wrench while torquing nuts, to prevent damage to spring. Torque nuts in sequence, starting with center bracket and working outward.
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