TM-9-2320-283-20-2

TRUCK TRACTOR, LINE HAUL, 50,000 GVWR, 6X4, M915A1

TECHNICAL MANUAL; ORGANIZATIONAL MAINTENANCE PART 2 OF 3

DECEMBER 1983

  TM-9-2320-283-20-2 - Page 598 of 852

TM 9-2320-283-20-2
BRAKE SYSTEM.
3-167. FRONT EXTERNAL AIR COUPLINGS REPLACEMENT (Continued).
LOCATION/ITEM
ACTION
REMARKS
WARNING
Never work on air system components
without first draining air pressure.
Failure to follow this precaution can
result in serious personal injury.
CAUTION
Right-hand coupling is vented.
Using
right-hand coupling on the left side
or rear will cause brakes to lock.
A.
RIGHT-HAND COUPLINGS REMOVAL.
1.
Coupling assembly
Remove from item (13).
(8).
2.
Chain (12).
Unhook from item (11).
Use pliers.
3.
Tube (10).
Remove from item (9).
4.
Elbow (9).
Remove from item (5).
5.
Locknut (3) and
Remove from item (5).
washer (4).
6.
Union (5) and
Remove from item (11).
coupling (13).
7.
Union (5).
Remove from item (13).
B.
LEFT-HAND COUPLINGS REMOVAL.
8.
Coupling assembly
Remove from item (6).
(7).
9.
Chain (14).
Unhook from item (6).
Use pliers.
10. Tube (15).
Remove from item (16).
11. Locknut (3).
Loosen.
12. Elbow (16).
Remove from item (1).
13. Elbow (1).
Remove from item (2).
3-970


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