TM-9-2320-361-34
2-1/2-TON, 6x6, M44A2 SERIES TRUCKS (MULTIFUEL)
TECHNICAL MANUAL; DIRECT SUPPORT AND GENERAL SUPPORT MAINTENANCE
MAY 1992
TM-9-2320-361-34 - Page 71 of 764
TM 9-2320-361-34
3-7. ROCKER ARMS AND PUSHRODS MAINTENANCE
THIS TASK COVERS:
a. Removal
d. Rocker Arm Assembly
b. Rocker Arm Disassembly
e. Installation
c. Cleaning and Inspection
f. Adjustment
INITIAL SETUP
APPLICABLE MODELS
All
TOOLS
General mechanic’s tool kit (Appendix B, Item 1)
Torque wrench, 3/4-in. dr. (Appendix B, Item 6)
Micrometer, inside (Appendix B, Item 16)
Micrometer, outside (Appendix B, Item 17)
1-5/8-in. socket, 3/4-in. dr.
(Appendix B, Item 45)
Handle, socket wrench, 3/4-in. dr.
(Appendix B, Item 46)
MATERIALS/PARTS
Six lockwashers (Appendix F, Item 123)
PERSONNEL REQUIRED
Two
REFERENCES (TM)
TM 9-2320-361-10
TM 9-2320-361-20
TM 9-2320-361-34P
EQUIPMENT CONDITION
Rocker arm cover(s) removed (para. 3-6).
GENERAL SAFETY INSTRUCTIONS
Disconnect battery ground cable prior to performing
valve adjustment procedure.
Two retainers (Appendix F, Item 203)
NOTE
Front and rear rocker arm assemblies are identical and are replaced
and repaired the same. This procedure covers the front rocker arm
assembly.
a.
Removal
NOTE
Tag components for installation.
1. Loosen six nuts (9) while holding adjustment screws (8).
2. Turn atiustment screw (8) counterclockwise until rocker arm (6) is loose against pushrod (5) end.
Repeat for remaining five screws (8).
3. Remove six screws (1), lockwashers (7), and three supports (2) with six rocker arms (6) from
cylinder head (4) and six pushrods (5). Discard lockwashers (7).
CAUTION
Engine oil may cause a suction between pushrods and tappets.
Pushrods must be removed from tappets using a sharp upward
snap motion. Failure to do this may result in tappets becoming
dislodged from bores in engine block.
4. Remove six pushrods (5) from tappets (3) and cylinder head (4).
3-20
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