Cylinder Head Assembly: Service and Repair

Fig. 12 Cylinder head bolt tightening sequence:

1. Remove intake manifold.
2. Raise and support vehicle.
3. Drain engine block.
4. Disconnect exhaust pipe.
5. Lower vehicle.
6. If removing left cylinder head, remove dipstick tube attachment, ground strap at rear of head and sensor connector at front of head.
7. If removing right cylinder head, remove drive belt, alternator bracket and air pump, if equipped.
8. Loosen rocker arm retaining nuts until pushrods can be removed.
9. Remove pushrods. Keep pushrods in order so they can be installed in their original positions.
10. Remove head bolts and cylinder head. The gasket surfaces on both head and cylinder case deck must be clean of any foreign matter and free of nicks or heavy scratches. Cylinder bolt threads in the case and threads on the cylinder head bolts must be clean. Dirt will affect bolt torque.
11. Reverse procedure to install. Coat cylinder head bolt threads with sealer, part No. 1052080 or equivalent, and install bolts. Torque bolts in proper sequence, Fig. 12., as follows:
Stage I: Torque all bolts to 40 ft lbs.
Stage II: Tighten all bolts an additional 90°, (1/4 turn).