TM-9-2320-272-24-1
TRUCK, 5-TON, 6X6, M939, M939A1, AND M939A2 SERIES TRUCKS (DIESEL)
TECHNICAL MANUAL; UNIT, DIRECT SUPPORT, AND GENERAL SUPPORT MAINTENANCE MANUAL; VOLUME 1 OF 4
JUNE 1998
TM-9-2320-272-24-1 - Page 508 of 1015
3-50. FRONT
TM 9-2320-272-224-1
THIS TASK COVERS:
a. Removal
b. Installation
INITIAL SETUP:
APPLICABLE/MODELS
REFERENCES (TM)
All
TM 9-2320-272-10
TOOLS
TM 9-2320-272-24P
EQUIPMENT CONDITION
• Parking brake set (TM 9-2320-272-10).
• Hood raised and secured (TM 9-2320-272-10).
• Right splash shield removed (TM 9-2320-272-10).
General mechanic’s tool kit (Appendix E, Item 1)
MATERIALS/PARTS
Locknut (Appendix D, Item 317)
Gasket (Appendix D, Item 170)
Gasket (Appendix D, Item 175)
GAA grease (Appendix C, Item 28)
GENERAL SAFETY INSTRUCTIONS
Do not touch hot exhaust system components with
bare hands.
WARNING
Do not touch hot exhaust system components with bare hands.
Injury to personnel may result.
1.
Remove two screws (12) and heat shield (13) from cab heat shield brackets (11).
2.
Remove locknut (4) and manifold coupling clamp (1) from front exhaust pipe (5) and exhaust
manifold (2). Retain locknut (4).
3.
Remove front exhaust pipe (5) and gasket (3) from exhaust manifold (2). Discard gasket (3).
4.
Remove locknut (8), screw (10), coupling clamp (7), front exhaust pipe (5), and gasket (6) from rear
flex pipe (9). Discard locknut (8) and gasket (6).
1.
Apply small amount of GAA grease on flange of front exhaust pipe (5), position new gasket (6) on front
exhaust pipe (5), and install pipe (5) on flex pipe (9) with coupling clamp (7), screw (10), and new
locknut (8).
2.
Apply small amount of GM grease on flange of exhaust manifold (2), and position new gasket (3)
and front exhaust pipe (5) on exhaust manifold (2).
3.
Install front exhaust pipe (5) on flange of exhaust manifold (2) with manifold coupling clamp (1) and
locknut (4).
4.
Install heat shield (13) on two cab heat shield brackets (11) with screws (12).
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