Valve Spring: Service and Repair

Removal

1. CAUTION: Valve spring, valve stem seal, valve spring retainer, cylinder head must be removed.

2. Remove the valve cover.





3. Rotate the camshaft until the roller follower for the valve to be repaired is on the base circle of the cam.





4. Install the Valve Spring Compressor, compress and hold down the valve spring.





5. Slide out the roller finger follower over the lash adjuster.
6. Remove the spark plug for cylinder being serviced and install an air line adapter.

7. CAUTION: The crankshaft may rotate when air pressure is applied. Remove all objects from fan area.

Turn on air supply and pressurize cylinder. Air pressure may rotate the crankshaft until the piston, pin and ring reaches the bottom of the stroke.





8. Compress the valve spring with Valve Spring Compressor and remove the valve spring retainer key valve spring retainer.





9. Remove and discard the valve stem seal.

10. CAUTION: If air pressure has forced the piston to the bottom of the cylinder, any removal of air pressure will allow the valve(s) to drop into the cylinder. Wrap a rubber band, tape or string around the end of the valve stem to prevent valve falling into the cylinder head.





11. Inspect the valve stem for damage. Rotate the valve and check the stem tip for damage. If replacement is required, remove the cylinder head.

Installation





1. CAUTION: Install the valve seal protector included with the valve seal kit over the end of the valve before installing the valve stem seal will be cut by valve retainer key grooves in the valve.

Put the valve seal protector (plastic installation cap) over the end of the valve.





2. Install the valve stem seal, and Valve Seal Replacer Tap lightly on tool with a plastic mallet until the valve stem seal is within specification from valve guide.





3. Remove the seal protector (plastic cap).





4. Apply Ford Multipurpose Grease DOAZ-19584-AA or equivalent meeting Ford specification ESB-M1C93-B to the valve stem.





5. Install the valve spring and the valve spring retainer into position.





6. Compress the valve spring with Valve Spring Compressor and install valve spring retainer keys.
7. Release spring tension to seat valve spring retainer keys in the correct cylinder.
8. Release air pressure and remove air adapter. Install spark plugs.
9. Apply Ford Multipurpose Grease DOAZ-19584-AA or equivalent meeting Ford specification ESB-M1C03-13 to roller finger follower.





10. Compress valve and spring with Valve Spring Compressor, and slide the roller finger follower into place over valve and valve lash adjuster.
11. Release the tension from the spring.
12. Install the valve cover.