Cylinder Head & Rocker Shaft Assembly

Fig. 16 Cylinder Head Bolt Tightening Sequence:

1. Install cylinder head assembly with new gasket. Making two or three passes, torque attaching bolts 59-64 ft. lbs. in the sequence shown in Fig. 16.
2. Install camshaft and check oil clearance. Clearance should be .0014-.0033 inch (.035-.085mm) at front and rear journals and .0026-.0045 inch (.065-.115mm) at the three center journals. Maximum clearance is .0059 inch (.15mm).
3. Apply clean engine oil to camshaft and bearings, then install camshaft. Ensure camshaft knock pin is at 12 o'clock position.
4. Install hydraulic lash adjuster as follows:
a. Pour engine oil into oil reservoir in rocker arm.
b. Apply engine oil to new hydraulic lash adjuster.
c. Install hydraulic lash adjuster into rocker arm, being careful not to damage O-ring.

Fig. 17 Rocker Arm & Shaft Assemblies:

5. Assemble rocker arms, hydraulic lash adjusters, rocker shafts and camshaft bearing caps as shown, Fig. 17. Ensure rocker arm shaft oil holes in center camshaft cap face each other. Use installation bolts for alignment.

Fig. 18 Rocker Shaft Bolt Tightening Sequence:

6. Apply suitable sealant to front and rear rocker shaft-to-cylinder head mating surface, then install rocker shaft assembly. Tighten attaching bolts to specifications in sequence, Fig. 18.