Cylinder Head Assembly: Service and Repair

Fig. 8 Cylinder Head Bolt Tightening Sequence:

Cylinder Head Assembly & Components:

Cylinder Head Assembly & Emissions Components:

1. Disconnect battery ground cable.
2. Remove lower radiator hose and drain coolant from engine.
3. Disconnect heater hose from fitting located under intake manifold.
4. Disconnect upper radiator hose from cylinder head.
5. Disconnect electric cooling fan switch from electrical connector.
6. Remove air cleaner assembly from engine.
7. Mark and disconnect all vacuum hoses from cylinder head.
8. Remove rocker arm cover.
9. Remove all accessory drive belts from engine.
10. Remove distributor cap and spark plug wires as an assembly.
11. Disconnect EGR tube from EGR valve. Disconnect choke cap wire.
12. Disconnect fuel supply and return lines from rubber connector.
13. Disconnect accelerator cable and speed control cable, if equipped.
14. Raise and support vehicle.
15. Disconnect exhaust system from exhaust pipe. Lower vehicle.
16. Remove cylinder head bolts, cylinder head and gasket with thermactor pump, exhaust and intake manifolds attached. Do not lay cylinder head flat. Damage to spark plugs or gasket surfaces may result.
17. Reverse procedure to install. Torque cylinder head bolts in sequence shown in Fig. 8, to specifications.