Valve Seals - In Vehicle

VALVE SEALS - IN VEHICLE

1. Disconnect the negative battery cable.
2. Remove the intake manifold/cylinder head cover .

NOTE: Rocker arms and lifters must be kept in order of removal and stored in the up right position.

3. Position the rocker arms aside..



ADAPTER, COMPRESSION TESTER - 9553

4. Install special tool 9553, compression tester adaptor, into the injector hole and retain with an injector hold down bolt.
5. Connect a regulated shop air supply to 9295 and pressurize the cylinder.
6. Place shop towels around the working area of the cylinder head to prevent valve locks from accidently entering the engine.




7. Using adaptor MD998772A-15 adaptor, collapse the valve spring and remove the locks.
8. Remove the valve spring assembly.
9. Remove the valve seal.
10. Repeat this procedure for all cylinders.