In Vehicle

ON VEHICLE

Special Tools:










1. Remove the camshaft bearing housing Camshaft Bearing Housing - Removal.
2. Install the (10224) (2) and the (10275) (3) on the (MD998772A) (1).






NOTE: Number 3 cylinder exhaust valve spring compression shown, all other valves similar.

3. Remove the spark plug Spark Plug - Removal.
4. Install the (MD998772A) (1) onto the cylinder head.
5. Install a spark plug adapter attached to a regulated shop air supply (2). Pressurize the cylinder being serviced to 620.5 - 689 kPa (90 - 100 psi) to hold the valves in place.

CAUTION: Air pressure must be maintained as long as the valve springs are removed to prevent the valves from dropping into the cylinders.

6. Using the (10224) (3), compress valve spring (5) and remove valve retaining locks (4).






NOTE: If the springs are to be reused, identify their positions so that they can be reassembled into their original locations. Number 2 cylinder exhaust valve spring shown, all other valve springs similar.

7. Release the valve spring compression and remove the valve spring retainer (1) and valve spring (2).
8. If required, remove the valve guide seal and spring seat Valve Guide Seals - Removal.