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 926 of 1015
TM 9-2320-272-24-1
3-202. PRIMARY AIR RESERVOIR (SUPPLY TANK) REPLACEMENT
THIS TASK COVERS:
a. Removal
b. Installation
INITIAL SETUP:
APPLICABLE MODELS
All except M936/A1/A2
TOOLS
General mechanic’s tool kit (Appendix E, Item 1)
MATERIALS/PARTS
Four locknuts (Appendix D, Item 291)
Antiseize tape (Appendix C, Item 72)
l
Do not disconnect air lines before draining air
reservoirs.
REFERENCES (TM)
l
Do not touch hot exhaust system components with
TM 9-2320-272-10
bare hands.
TM 9-2320-272-24P
EQUIPMENT CONDITION
l
Parking brake set (TM 9-2320-272-10).
l
Air reservoirs drained (TM 9-2320-272-10).
l
Toolbox and step removed (para. 3-302).
l
Primary low air pressure switch removed
(para. 3-99).
GENERAL SAFETY INSTRUCTIONS
WARNING
l
Do not disconnect air lines before draining air reservoirs. Small
parts under pressure may shoot out with high velocity, causing
injury to personnel.
l
Do not touch hot exhaust system components with bare hands.
Injury to personnel may result.
NOTE
l
Primary reservoir is located below the cab on right side frame
rail above secondary reservoir.
l
Tag air lines for installation.
1.
Disconnect wet reservoir supply line (6) from elbow (7).
2.
Disconnect drain line (8) from elbow (9).
3.
Disconnect primary relay valve supply line (1) from elbow (10).
4.
Disconnect supply line (2) from adapter (4).
5.
Disconnect treadle valve supply line (3) from adapter (4).
NOTE
Assistant will help with steps 6 and 7.
6.
Remove two locknuts (11) and screws (13) from clamps (12). Discard locknuts (11).
7.
Remove two locknuts (11), screws (13), clamps (12), and reservoir (5) from clamps (14). Discard
locknuts (11).
3-562
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