TM-9-2320-272-24-2
TRUCK, 5-TON, 6X6, M939, M939A1, AND M939A2 SERIES TRUCKS (DIESEL)
TECHNICAL MANUAL; UNIT, DIRECT SUPPORT, AND GENERAL SUPPORT MAINTENANCE MANUAL; VOLUME 2 OF 4
JUNE 1998
TM-9-2320-272-24-2 - Page 782 of 991
4-9. ENGINE
TM 09-2320-272-24-2
THIS TASK COVERS:
a. Installation (M939/A1)
b. Installation (M939A2)
c. Removal (M939A2)
d. Removal (M939/A1)
INITIAL SETUP:
APPLICABLE MODELS
All
SPECIAL/TOOLS
Engine repair stand (Appendix E, Item 44)
Engine barring tool (M939A2)
(Appendix E, Item 42)
TOOLS
General mechanic’s tool kit (Appendix E, Item 1)
MATERIALS/PARTS
Gasket (M939A2) (Appendix D, Item 163)
Gasket (M939A2) (Appendix D, Item 139)
Gasket (Appendix D, Item 167)
Two seal washers (M939A2)
(Appendix D, Item 644)
Banjo seal (M939A2) (Appendix D, Item 9)
Three screw-assembled lockwashers (M939/A1)
(Appendix D, Item 585)
Three lockwashers (M939/A1)
(Appendix D, Item 382)
Eleven lockwashers (M939/A1)
(Appendix D, Item 354)
Two locknuts (M939/A1)
(Appendix D, Item 281)
Locknut (M939/A1) (Appendix D, Item 327)
Gasket (M939/A1) (Appendix D, Item 156)
Gasket (M939/A1) (Appendix D, Item 155)
Twelve key washers (M939/A1)
(Appendix D, Item 267)
MATERIALS/PARTS (Contd)
Six gaskets (M939/A1) (Appendix D, Item 168)
Packing sleeve (M939/A1) (Appendix D, Item 21)
Gasket (M939/A1) (Appendix D, Item 180)
Four lockwashers (M939/A1) (Appendix D, Item 416)
Antiseize tape (M939A2) (Appendix C, Item 72)
Gasket sealant (M939A2) (Appendix C, Item 30)
REFERENCES (TM)
TM 9-2320-272-24P
EQUIPMENT CONDITION
Engine and transmission removed (M939/A1)
(para. 4-4).
Engine and transmission removed (M939A2)
(para. 4-5).
Transmission removed (para. 4-72).
Engine steam-cleaned (para. 2-15).
GENERAL SAFETY INSTRUCTIONS
• Tilt rear of transmission slightly downward to
prevent torque converter from sliding off.
• Engine must be securely mounted on repair stand.
• Ensure engine weight is evenly distributed.
• Lifting device must have a capacity greater than
the combined weight of the engine and
transmission.
• All personnel must stand clear during lifting
operations.
NOTE
Spacer will be present on late model engines only.
1.
Remove screw (1), lockwasher (2), washer (3), screw (9), lockwasher (8), washer (71, adjustable
link (5), spacer (6), and washer (4) from alternator (18). Discard lockwashers (2) and (8).
2.
Remove two screws (16), locknuts (11), washers (12), alternator belt (10), and alternator (18) from
engine block (19). Discard locknuts (11).
3.
Remove four screws (15), lockwashers (14), washers (13), and mounting bracket (17) from engine
block (19). Discard lockwashers (14).
4-100
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