Diesel Data: Automotive Repair

Valve: Service and Repair

NOTE: Identify valves and valve springs as they are removed so that each item can be reinstalled in its original position.





REMOVAL
1. Using an appropriate-sized socket and plastic mallet, lightly tap the valve retainer to loosen the valve keepers before installing the valve spring compressor.





2. Install the spring compressor. Compress the spring and remove the valve keepers.





3. Install the tool as shown.





4. Remove the valve seal.

INSTALLATION





NOTE: Exhaust and intake valve seals are NOT interchangeable.





^ When installing valves in cylinder head, coat valve stems with oil before inserting into valve guides, and make sure valves move up and down smoothly.
^ When valves and springs are in place, lightly tap the end of each valve stem two or three times with a plastic mallet to ensure proper seating of valve and valve keepers.

NOTE: Tap the valve stem only along its axis so you do not bend the stem.