TM-9-2320-272-24-3
TRUCK, 5-TON, 6X6, M939, M939A1, AND M939A2 SERIES TRUCKS (DIESEL)
TECHNICAL MANUAL; UNIT, DIRECT SUPPORT, AND GENERAL SUPPORT MAINTENANCE MANUAL; VOLUME 3 OF 4
JUNE 1998
TM-9-2320-272-24-3 - Page 16 of 799
TM 9-2320-272-24-3
4-41. ROCKER LEVERS, PUSH RODS, AND CYLINDER HEAD REPLACEMENT
THIS TASK COVERS:
a. Rocker Levers and Push Rods Removal
c. Cylinder Head Installation
b. Cylinder Head Removal
d. Rocker Levers and Push Rods Installation
INITIAL SETUP:
APPLICABLE MODELS
REFERENCES (TM)
M939A2
TM 9-2320-272-24P
SPECIAL TOOLS
Torque angle gauge (Appendix E, Item 141)
TOOLS
General mechanic’s tool kit (Appendix E, Item 1)
Torque wrench (Appendix E, Item 144)
MATERIALS/PARTS
Seal (Appendix D, Item 598)
Fuel filter (Appendix D, Item 135)
Lockwasher (Appendix D, Item 364)
Gasket (Appendix D, Item 188)
Two washers (Appendix D, Item 645)
Two washers (Appendix D, Item 644)
Two washers (Appendix D, Item 714)
Washer (Appendix D, Item 711)
Lubrication oil (Appendix C, Item 48)
EQUIPMENT CONDITION
Parking brake set (TM 9-2320-272-10).
Aftercooler removed (para. 3-76).
Exhaust manifold removed (para. 4-50).
Fan clutch and hose removed (para. 3-74).
Fuel injector tubes removed (para. 3-19).
Valve covers removed (para. 3-6).
Diesel fuel Appendix C, Item 42)
a. Rocker Levers and Push Rods Removal
1.
Loosen twelve locknuts (3) and turn adjusting screws (2) two full turns counterclockwise.
2.
Remove twelve screws (1), six retaining clamps (9), rocker lever assemblies (8), and rocker lever
supports (7) from cylinder head (5).
3.
Remove oil manifold (4) from cylinder head (5).
4.
Remove twelve push rods (6) from cylinder head (5).
4-280
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