Valve Rocker Arm and Push Rods Cleaning and Inspection
WARNING: This page is about a different variant/trim than selected.
- Clean the components with cleaning solvent.
- Dry the components with compressed air.
- Inspect the valve rocker arms for wear or scoring in the ball area.
- Inspect the valve rocker arm push rod sockets and valve stem tip mating surfaces.
- Inspect the valve rocker arm ball for wear or scoring.
These surfaces should be smooth with no scoring or exceptional wear.
- Inspect the push rods (1, 2) for worn or scored ends.
These surfaces should be smooth with no scoring or exceptional wear.
- Inspect the push rods for bends. Roll the push rods on a flat surface to determine if the push rod is bent. If it rolls smoothly, it is OK. If the push rod does not roll smoothly, replace the push rod.
- Inspect the push rod oil passages for restrictions.
- Clean out the push rod tube with compressed air.
- Inspect by looking through the push rod tube for obstructions. A clear push rod will allow light through.
- Replace push rod(s) that cannot be cleaned out.
- Inspect the rocker arm studs for the following conditions:
- Damaged threads (1)
- Excessive wear or damage (2) made from contact between the rocker arm and rocker arm stud
- Valve rocker arm studs with excessive wear and/or damage must be replaced.
- Inspect the push rod guides for the following conditions:
- Wear between the push rod and the push rod guide (1)
- Bent push rod guide (2)
- Cracks
- Push rod guides with excessive wear and/or damage must be replaced.
IMPORTANT:
Parts that are to be reused must remain sorted or organized in order to return them to their original location.
CAUTION:
Refer to SAFETY GLASSES CAUTION
in Cautions and Notices.
IMPORTANT:
A light contact mark on the rocker arm stud is normal. A noticeable groove in the rocker arm stud is excessive wear and the rocker arm stud should be replaced.