Rocker Arms and Lost Motion Assemblies

INSPECTION





NOTE: When reassembling the primary rocker arm, carefully apply air pressure to the oil passage of the rocker arm.





1. Inspect the rocker arm pistons. Push them manually.
- If they do not move smoothly, replace the rocker arm assembly.

NOTE:
- Apply oil to the pistons when reassembling.
- Bundle the rocker arms with rubber bands to keep them together as sets.





2. Remove the lost motion assembly from the cylinder head and inspect it. Pushing it gently with the finger will cause it to sink slightly. Increasing the force on it will cause it to sink deeper.
- If the lost motion assembly does not move smoothly, replace it.