Rocker Arm Assembly: Service and Repair

Fig. 5 Removing nylon retainer:

Fig. 6 Service rocker arm identification:

Fig. 7 Service rocker arm installation:

MODELS W/NYLON RETAINERS
A nylon retainer is used to retain the rocker arm. Break them below their heads with a chisel, or pry out with channel locks Fig. 5. Production rocker arms can be installed in any sequence since the arms are identical. Replacement rocker arms for all engines are identified with a stamping, right (R) and left (L), Fig. 6 and must be installed as shown in Fig. 7. To install rocker arms, position arm on rocker shaft, centering it over the 1/4 inch hole in the rocker shaft. Then, install new rocker arm retainers in the holes using a 1/2 inch drift to seat them.



MODELS LESS NYLON RETAINERS
Rocker arms are mounted to the cylinder head via individual iron pedestals and are retained by hardened steel bolts. To install rocker arms, position pedestal retainer, rocker arm and pedestal onto cylinder head. Install retaining bolts and torque to specification.