Rocker Arm and Push Rod - Removal

1. Remove the valve rocker arm cover.

NOTE: If only the pushrod is to be replaced, back the valve rocker arm nut off until the valve rocker arm can be moved away from the pushrod. Then pull the pushrod out.





2. Remove the valve rocker arm nut.
3. Remove the valve rocker arm with the ball.





NOTE:
- The cylinder heads on this engine use screw-in valve rocker arm studs with positive stop shoulders. Follow the replacement procedures. No valve adjustment is necessary.
- When the valve train requires service, tighten the valve rocker arm nuts to 27 Nm (20 ft. lbs.).
- Replace valve rocker arm studs that have damaged threads with new studs. If the threads in the head are damaged or stripped, re-tap the head and insert a helical type insert. If such an insert is not available, the head should be replaced.

4. Remove the valve rocker arm stud by unscrewing.

NOTE: Store the used components in an exact order, so they can be reassembled in the same position from which they were removed.





5. Remove the pushrod.
6. Inspect the valve rocker arms and balls at their mating surfaces. There surfaces should be free from wear or other damage.
7. Inspect the valve rocker arm areas that contact the valve stems and the socket areas that contact the ends of the pushrods. These areas should be free of damage and wear.
8. Inspect the pushrods for scoring or roughness.
9. Roll the pushrod on a flat surface in order to determine if it is bent. if the pushrod is bent, the rod will not roll freely. Replace the pushrod if necessary.