Cylinder Head Assembly: Service and Repair

Fig. 9 Cylinder Head Bolt Hole Identification:

Some 5.2L/V8-318 engines have cylinder head bolt holes drilled through the block into the water jacket in certain locations, Fig. 9. Refer to Fig. 9 and insert a screwdriver into the head bolt holes. If the screwdriver can be inserted at least two inches into a hole, that hole is open to the water jacket. Cylinder head bolts in these locations must have sealer 4057989 or equivalent applied to the threads to prevent engine coolant leakage. Be sure old sealer is cleaned from the threads before applying new sealer.
1. Disconnect battery ground cable and drain cooling system.
2. Remove alternator, then the carburetor air cleaner and fuel line.
3. Disconnect accelerator linkage.
4. Remove vacuum control hoses between carburetor and distributor.
5. Remove distributor cap with spark plug wires attached, then disconnect coil wires and heat indicator sending unit electrical connector.
6. Remove heater hoses and bypass hose.
7. Remove closed ventilation system, evaporation control system and cylinder head covers.
8. Remove intake manifold.
9. Remove exhaust manifolds.
10. On all models except 1992 5.2L/V8-318, remove rocker shaft assembly and pushrods. During disassembly note location of pushrods so they can be installed in the same position.
11. On 1992 5.2L/V8-318, remove rocker arm assemblies and pushrods. During disassembly note location of pushrods so they can be installed in the same position.
12. On all models, remove cylinder head attaching bolts, then the cylinder heads.
13. Reverse procedure to install noting the following:

Fig. 10 Cylinder Head Tightening Sequence:

a. Tighten head bolts in sequence shown in Fig. 10. Tighten head bolts to specifications.

Fig. 3 Intake Manifold Tightening Sequence:

Fig. 6 Intake Manifold Bolt Tightening Sequence:

b. Tighten intake manifold bolts in sequence shown in Figs. 3 and 6.