TM 9-2320-272-24-4
5-30. ROCKER LEVERS AND PUSH RODS MAINTENANCE
THIS TASK COVERS:
c. Assembly
a. Disassembly
b. Cleaning and Inspection
INITIAL SETUP:
REFERENCES (TM)
APPLICABLE MODELS
TM 9-2320-272-10
M939A2
TM 9-2320-272-24P
TOOLS
EQUIPMENT CONDITION
General mechanic's tool kit (Appendix E, Item 1)
Parking brake set (TM 9-2320-272-10).
Inside micrometer (Appendix E, Item 82)
Rocker-levers and push rods removed (para. 4-41).
Outside micrometer (Appendix E, Item 80)
Torque wrench (Appendix E, Item 144)
GENERAL SAFETY INSTRUCTIONS
MATERIALS/PARTS
Keep fire extinguisher nearby when using
drycleaning solvent.
Twelve locknuts (Appendix D, Item 326)
Drycleaning solvent is flammable and toxic.
Drycleaning solvent (Appendix C, Item 71)
Eyeshields must be worn when cleaning with
Lubricating oil (Appendix C, Item 50)
compressed air. Compressed air source will not
exceed 30 psi (207 kPa).
a. Disassembly
NOTE
All rocker levers are disassembled the same way. This procedure
covers one rocker lever assembly.
1.
Remove two retaining rings (2), washers (3), spring washers (4), and rocker levers (1) from rocker
shaft (7).
2.
Remove locknut (5) and adjusting screw (6) from each rocker lever (1). Discard locknut (5).
b. Cleaning and Inspection
1.
For general cleaning instructions, refer to para. 2-14
2.
For general inspection instructions, refer to para. 2-15.
3.
Replace all parts failing inspection.
4.
Measure inside diameter of rocker lever bore (8) at several points, If inside diameter exceeds
0.878 in. (22.3 mm), replace rocker lever (1).
5.
Measure outside diameter of rocker shaft (7) at several points. If outside diameter is less than 0.874
in. (22.2 mm), replace rocker shaft (7).
5-206
