Cylinder Head Assembly: Service and Repair

Fig. 1 Cylinder head bolt tightening sequence:

1. Drain cooling system.
2. On 16 valve engine, remove intake manifold attaching bolts, then intake manifold.
3. Exc. 16 valve engine, remove valve cover to cylinder head attaching bolts, then the valve cover and camshaft cover.
3. Loosen alternator adjusting bolt, then remove alternator drive belt.
4. Disconnect all hoses and wires that will interfere with cylinder head removal.
5. Exc. 16 valve engine, disconnect intake and exhaust manifolds from cylinder head.
6. Remove timing belt as outlined under ``Timing Belt, Replace'' procedure.
7. On 16 valve engine, remove valve cover to cylinder head attaching bolts, then valve cover and gasket.
7. Loosen cylinder head bolts in reverse order shown in Fig. 1.
8. Remove bolts and the cylinder head.
9. Reverse procedure to install. Torque head bolts using sequence shown in Fig. 1, as follows:
a. Insert bolts 8 and 10 first to align cylinder head and gasket, then tighten all bolts hand tight.
b. Tighten bolt (12 pt. M11 bolts), in 2 steps: 29 ft. lbs., then 43 ft. lbs., and turn each bolt an additional 1/2 turn. No retorquing is necessary.