Tools Required

1. Remove the engine cover from the vehicle. Refer to Engine Cover Replacement in Interior Trim.
2. Remove the upper intake manifold from the engine assembly. Refer to Intake Manifold Replacement .
3. Remove the lower intake manifold from the engine assembly. Refer to Intake Manifold Replacement .
4. Remove the valve rocker arm, shaft and the push rods from the engine assembly. Refer to Valve Rocker Arm, Shaft, and Push Rod Replacement .
5. Remove the glow plug (s) from the cylinder (s) being serviced.

•	If servicing the left cylinder head, refer to Glow Plug Replacement - Left Side in Engine Controls--6.5L.

•	If servicing the right cylinder head, refer to Glow Plug Replacement - Right Side in Engine Controls--6.5L.

Important: Rotate the cylinder being serviced to the bottom stroke so that when compressed air is applied the engine will not rotate.

6. Install the J 26999-10 or the J 26999-30 into the glow plug hole.
7. Apply compressed air to hold the valves in place. If the compressed air is released, the valves can drop into the cylinder.
8. Use the J 38606 in order to compress the valve spring. If the spring will not compress, tap on the tool lightly with a mallet in order to loosen the cap or rotator from the valve keys.
9. Remove the valve keys from the valve stem.
10. Carefully release the valve spring tension.



11. Remove the cap or the rotator, the shield, and the valve spring with the damper.
12. Remove the valve stem oil seals.

Notice: Air pressure should remain applied to the cylinder for installation.

1. Apply a small amount of clean engine oil to the valve stem.
2. Install the new valve stem oil seals.
3. Install the valve spring with the damper, the shield, and the cap or the rotator.
4. Install the valve keys to the valve stem.
5. Install the valve keys. Use grease in order to hold the valve keys in place.
6. Carefully release the valve spring pressure. Make sure the valve keys stay in place.



7. Remove the J 38606 or the J 26999-30 and the J 26999-10 .
8. Install the glow plug (s) to the cylinder (s) being serviced.

•	If servicing the left cylinder head, refer to Glow Plug Replacement - Left Side in Engine Controls--6.5L.

•	If servicing the right cylinder head, refer to Glow Plug Replacement - Right Side in Engine Controls--6.5L.

9. Install the valve rocker arm shaft, rocker arms, and the push rods. Refer to Valve Rocker Arm, Shaft, and Push Rod Replacement .
10. Install the lower intake manifold to the engine assembly. Refer to Intake Manifold Replacement .
11. Install the upper intake manifold to the engine assembly. Refer to Intake Manifold Replacement .
12. Install the engine cover to the vehicle. Refer to Engine Cover Replacement in Interior Trim.