Valve Spring Lock: Service and Repair

REMOVAL
1. Remove the valve cover.





2. Rotate the crankshaft until the piston for the valve being worked on is at the top of its stroke with both the (A) intake valve and the (B) exhaust valve closed.
3. Hold the valve in the cylinder head.
- Remove the spark plug, if necessary.
- Apply a minimum of 965 kPa of compressed air to the cylinder.

CAUTION:
- If the components are to be reinstalled, they must be installed in the same position. Mark the components for location.
- If a valve drops into the cylinder, remove the cylinder head.






4. Remove the rocker arms.
1 Remove the bolts.
2 Remove the rocker arms.






5. Use the Valve Spring Compressor to compress the valve springs.





6. Remove the following:
1 Remove the valve spring retainer key.
2 Remove the valve spring retainer.
3 Remove the valve spring.
4 Remove and discard the valve stem seal. Remove the valve spring seat.

7. Inspect the components, if necessary.

INSTALLATION





1. Follow the removal procedure in reverse order.

CAUTION: The components removed should be marked for location; make sure the components are installed in the correct location.

NOTE: Lubricate parts with engine oil prior to assembly.