TM 5-3895-376-14&P
5-7. ROCKER ARM ASSEMBLY MAINTENANCE INSTRUCTIONS
This task includes:
d. Repair
a. Remove
e. Installation
b. Cleaning
c. Inspection
INITIAL SETUP
Equipment Condition
Tools
Compactor set on level ground in a protected area.
Tool Kit, General Mechanic's
Engine off.
Punch, Drift; item 37, Appx F
Valve cover removed.
Caliper, Vernier; item 6, Appx F
Hammer, Hand, Plastic; item 16, Appx F
General Safety instructions
Materials/Parts
Observe all WARNINGS and CAUTIONS
Solvent, Dry Cleaning; item 9, Appx E
REMOVE
1.
Remove two hex nuts, flat washers and the valve
cover, if not already removed.
2.
Using a drift punch, drive out the rocker arm shaft
and remove the two rocker arm assemblies.
3.
Remove push rods from engine.
CLEANING
WARNING
P-D-680, Type Ill, is moderately toxic to
the skin, eyes and respiratory tract;
avoid prolonged exposure. Skin and
eye protection is required. Good ventila-
2.
Check diameter of rocker arm shaft at wearing
tion is required. Do not use near open
surfaces of the rocker arms with vernier caliper.
flame or excessive heat. Flash point is
Maximum wear of the shaft diameter is 0.471 in.
200 F (93.3 C).
(11.962 mm)
1.
Clean all parts in dry cleaning solvent and dry
3.
Inspect rocker arms for cracks or scoring of the
thoroughly.
bore surfaces.
INSPECTION
4.
Inspect shaft for scoring or other damage.
1.
Check bore of rocker arms for wear with vernier
5.
Inspect adjusting screws and nuts for damage.
caliper. Maximum wear of the bore diameter is
0.475 in. (12.060 mm)
6.
Inspect push rods for straightness or other dam-
age.
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