Note: A new or reconditioned cylinder head can be purchased from manufacturers or repair specialists. Please note that special tools are required for disassembly and inspection, and new parts are not always easy to obtain. Therefore, a more convenient and cost-effective option for you is to purchase a reconditioned head rather than disassemble, inspect, and restore the used head.
1. Remove the camshafts and hydraulic lifters (chapter 2A or 2B). Carefully fold the compensators as indicated above (see Fig. 7.1).
Fig. 7.1 Cylinder head components (4-cylinder engine, early models)
1. Hydraulic compensators
2. Valve crackers
3. Upper valve spring seat
4. Valve spring
5. Lower spring seat/valve stem seal
6. Lubrication system valve
7. Engine cargo eye
8. Cylinder head gasket
9. Inlet valve
10. Mounting pins
11. Exhaust valve
12. Cylinder head bolt
2. Remove the cylinder head(s) (chapter 2A or 2B).
3. Using a valve spring compressor, compress each valve spring one at a time until the crackers can be removed. You will need a special spring compressor that can be inserted deep into the cylinder head without damaging the hydraulic compensator holes. These compressors are available at auto parts stores. Release the compressor and remove the upper spring seat and the spring itself (see Fig. 7.3, a-c).
4. If after the compressor has compressed the spring the upper spring seat does not move away and does not allow the crackers to be removed, lightly tap the upper part of the compressor with a light hammer so that the blow hits the upper spring seat. After this the seat will move from its place.
5. Pull the valve out through the combustion chamber. If it gets stuck in the guide, tap it back in and remove any burrs in the cracker groove with a file or polishing stone. Be careful not to damage the hydraulic compensator bore.
6. To remove the lower valve spring seat/valve stem seal, we recommend the Ford 21-160 tool. If you do not have it, you can use a homemade one (see Fig. 7.6,a,b). Take a stiff spring of the appropriate size. Screw this spring (or tool) so that it enters the cuff, and then pull the cuff out of the valve guide. It is almost impossible to remove the cuff without using a tool without risking damage to the cylinder head.
7. The valves should be stored together with the corresponding crackers, spring seats and springs so that they can be put back in place during installation. For this purpose, use small polyethylene bags with tags (see Fig. 7.7).
8. If it is necessary to remove the lubrication system valve (for thorough flushing of the cylinder head oil passages), consult with the dealers about this. It is possible that the valve will have to be broken and then replaced with a new one. To do this, screw a self-tapping screw into the valve vent hole and pull out the valve. When assembling, the new valve must be pressed into place (see Fig. 7.8).
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