Rocker Arm Assembly - Yale GLP20LX Service Manual

0600 YRM 1205
Clean and Inspect
WARNING
Cleaning solvents can be flammable and toxic and
can cause skin irritation. When using cleaning
solvents, always follow the recommendations of
the manufacturer.
WARNING
Compressed air can move particles so that they
cause injury to the user or to other personnel.
Make sure that the path of the compressed air is
away from all personnel. Wear protective goggles
or a face shield to prevent injury to the eyes.
CAUTION
Use caution not to scratch the gasket mating sur-
faces when cleaning the valve cover and cylinder
head.
Carefully remove all gasket residue from the valve
cover and cylinder head.
Clean the valve cover in cleaning solvent. Dry the
valve cover with compressed air. Inspect for wear,
cracks, and any other damage. If necessary, replace
valve cover.
Install
1. Lightly grease the new valve cover gasket.
2. Place the new valve cover gasket in the groove of
the valve cover.
3. Place the valve cover in position on the cylinder
head.
4. Verify that the O-rings are installed on the valve
cover nuts.
Cylinder Head Assembly Repair
5. Install and tighten the valve cover nuts. Refer to
Standard Torque Specifications.

ROCKER ARM ASSEMBLY

Remove
1. Remove the valve cover. See Valve CoverRe-
move.
2. Remove the bolt and locking nuts that retain the
rocker arm assembly support brackets to the cyl-
inder head. See Figure 7.
3. Lift the rocker arm shaft assembly from the cylin-
der head.
NOTE: Mark the push rods so they can be reinstalled
in original location during reassembly.
4. Remove the push rods from the cylinder head.
Disassemble
1. Remove the rocker arm shaft retaining screw from
the support bracket that secures the rocker arm
shaft. See Figure 7.
2. Remove the retaining rings from the ends of the
rocker arm shaft.
NOTE: Mark the rocker arms so they can be reinstal-
led in original location during reassembly.
NOTE: The rocker arm shaft fits tightly in the rocker
arm support brackets. Clamp the support bracket in a
padded vise and twist and pull the rocker arm shaft to
remove the shaft.
3. Slide the rocker arm shaft out of the rocker arm
support brackets, springs, and rocker arms.
4. If necessary, remove the valve adjusting screw
and lock nut from the rocker arms.
7