Valve Spring: Service and Repair

Valve Spring-Springs, Retainers, and Stem Seals





Special Tool(s)

Removal
1. Remove the appropriate camshafts.
2. Position the piston to the top of its stroke on the appropriate cylinder.
3. Remove the appropriate spark plug.
4. Pressurize the cylinder with compressed air to hold both valves closed.

5. CAUTION: Do not use any means of marking the shims other than a permanent type marker. Any scratches or paint on the shims may result in incorrect lash adjustments and severe engine damage.

CAUTION: The tappets and shims must be installed in their original positions to make sure of correct valve lash settings.

Remove the tappet and shim from the valve
- If more than one tappet and shim are removed, mark them using a permanent type marker





6. Using the special tool, compress the valve spring and remove the retainer locks.





7. Remove the special tool.





8. Remove the valve spring.
1. Remove the retainer.
2. Remove the valve spring.





9. Remove the valve stem seal.
10. Repeat the procedure until all the valve stem seals have been removed.

Installation
1. Install the valve stem seal.





2. Install the valve spring.
1. Install the spring.
2. Install the retainer.





3. Using the special tool, compress the valve spring and install the retainer locks.
4. Release the compressed air used to hold the valves closed.
5. Install the spark plug.
6. Repeat the procedure until all of the valve stem seals have been installed.

7. CAUTION: The tappets and shims must be installed in their original positions to make sure of correct valve lash settings.

Install the tappet and shim from the valve.
8. Install the camshafts.