Removal and Installation

Fig. 34 Rocker arm bracket bolt loosening sequence.:

Fig. 35 Rocker arm shaft bolts removal sequence.:

1. Remove cam cover.
2. Using sequence shown in Fig. 34 and 35, remove rocker arm shaft bracket bolts and nuts, then remove rocker arm shaft and rocker arm assembly.
3. Prior to installation, apply a generous amount of engine oil to the rocker arm shaft, rocker arms and valve stem end caps.

Fig. 36 Rocker arm bracket bolt tightening sequence.:

Fig. 37 Rocker arm shaft bolts installation sequence.:

4. Install rocker arm shaft assembly and tighten bolts in sequence as shown in Fig. 36 and 37.

Fig. 7 TDC timing mark:

5. Bring No. 1 piston to top dead center compression stroke by turning crankshaft until timing mark on pulley aligns with pointer, Fig. 7
6. Adjust the intake valve of Nos. 1 and 2 cylinders and exhaust valve of Nos. 1 and 3 cylinders to specifications.
7. Rotate engine one complete revolution to bring No. 4 piston to top dead center compression stroke.
8. Adjust the intake valve of Nos. 3 and 4 cylinders and exhaust valve of Nos. 2 and 4 cylinders to specifications.