Cylinder Head Assembly: Service and Repair
Removal1. Remove intake manifold and carburetor as an assembly.
2. Disconnect muffler inlet pipe at exhaust manifold.
3. Loosen air conditioning compressor drive belt, if so equipped.
4. Remove Thermactor air pumps (Right Hand head).
5. Remove the Thermactor air pump bracket bolts and position the mounting bracket to the side (Right Hand head).
6. Loosen alternator attaching bolts and remove bolt attaching alternator bracket to Right Hand cylinder head.
7. If equipped with air conditioning, shut off compressor at service valves and remove valves and hoses from compressor. Remove nuts attaching compressor support bracket to water pump. Remove bolts attaching compressor to upper mounting bracket and position compressor out of the way. Remove compressor upper mounting bracket from cylinder head.
If not equipped with air conditioning, remove bolts attaching power steering reservoir bracket to Left Hand cylinder head. Position reservoir and bracket out of the way.
8. Remove the Thermactor supply manifold from the exhaust manifold.
9. Remove valve rocker arm covers. Remove rocker arm bolts, rocker arms, oil deflectors, fulcrums and push rods in sequence so they can be installed in their original positions.
10. Remove cylinder head attaching bolts. Lift cylinder heads and exhaust manifolds as assemblies from cylinder block with a hoist.
NOTE: If necessary to loosen cylinder head gasket seal, pry at forward corners of cylinder heads against casting bosses provided on cylinder block. Do not damage machined surfaces of head or block. Discard cylinder head gasket.
11. If disassembly or machining of cylinder head is required, remove exhaust manifold.
Installation
1. Clean cylinder head, intake manifold, valve rocker arm cover, and cylinder block gasket surfaces. If cylinder head was removed for cylinder head gasket replacement, check flatness of cylinder head and block gasket surfaces. If exhaust manifold was removed, coat cylinder head and manifold port areas with film of graphite grease and install manifold and gasket to cylinder head.
2. Place two long cylinder head attaching bolts in two rear lower bolt holes of Left Hand cylinder head. Place a long cylinder head attaching bolt in rear lower bolt hole of Right Hand cylinder head. Use rubber bands to retain bolts in position until cylinder heads are installed.
3. Position new cylinder head gaskets on block over dowels. Do not apply sealer to head gasket surfaces. Place cylinder heads on block, guiding exhaust manifold studs into muffler inlet pipe connections. Install remaining attaching bolts (longer bolts in lower row of bolt holes). Tighten all cylinder head attaching bolts in sequence in 3 steps:
^ 1st step-tighten all bolts to 108 N-m (80 ft-lbs).
^ 2nd step-tighten all bolts to 149 N-m (110 ft-lbs).
^ 3rd step-tighten all bolts to 177-189 N-m (130-140 ft-lbs).
When this procedure is used, it is not necessary to tighten bolts after extended operation.
4. Clean and inspect push rods, one at a time. Clean the oil passage in the push rods with a suitable solvent, and blow out with compressed air.
5. Install push rods in original positions. Apply Ford Polyethylene Grease or equivalent to valve stem tips and push rod ends.
6. Lubricate and install the rocker arms.
NOTE: Ensure lower ends of push rods remain seated in valve tappets.
7. Tighten muffler inlet pipe stud nuts to 34-52 N-m (25-38 ft-lbs).
Fig. 16 Intake manifold bolt tightening sequence:
8. Install intake manifold and carburetor assembly.
9. Perform Valve Clearance Check. Adjust only if necessary.
10. If equipped with air conditioning, install compressor upper mounting bracket to Left Hand cylinder head. Attach compressor to upper mounting bracket. Attach power steering reservoir and compressor mounting bracket to Left Hand cylinder head and water pump. Connect service valves and hoses to compressor.
If not equipped with air conditioning, attach power steering reservoir bracket to Left Hand cylinder head.
11. Apply Gasket and Seal Contact Adhesive or equivalent oil-resistant sealer to one side of new valve rocker arm cover gaskets. Lay cemented side of gaskets in place in covers. Install covers.
12. Install Thermactor supply manifold to exhaust manifold.
13. Install bolt attaching alternator bracket to Right Hand cylinder head. Tighten to 44-61 N-m (45-57 ft-lbs). Adjust alternator drive belt tension. Tighten alternator attaching bolts to 62-77 N-m (45-57 ft-lbs) for pivot bolt, 48-67 N-m (35-50 ft-lbs) for adjusting arm-to-cylinder block bolt.
14. If equipped with air conditioning, adjust compressor drive belt tension. Tighten attaching bolts.
15. Install Thermactor air pumps (Right Hand head).
16. Install Thermactor air pump bracket bolt and position mounting bracket to the side (Right Hand head).
17. Fill and bleed cooling system. Fill and bleed power steering reservoir, as necessary.
18. Connect battery(s).
19. Start engine and check for leaks.
20. Check and adjust carburetor idle speed to specifications on Vehicle Emissions Control Information (VECI) decal.
21. If equipped with air conditioning, evacuate compressor and partially charge system with refrigerant.