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 644 of 852
TM 9-2320-283-20-2
BRAKE SYSTEM.
3-173. TRAILER HAND BRAKE VALVE REPLACEMENT (Continued).
LOCATION/ITEM
ACTION
REMARKS
NOTE
Delivered pressure can be raised or lowered by rotating adjusting ring.
E.
ADJUSTMENT.
I
WARNING
Never work on air system components without first draining air pressure. Failure to follow this precaution
can result in serious personal injury.
17 Air system
Open
Refer to TM 9-2320-
draincocks
283-10.
18 Pin (3)
Remove
Use hammer and pin
punch.
19 Lever (1) with
Remove from item (4).
preformed pack-
ing (2).
20 Head (4)
Remove.
21 Locking ring (13)
Remove.
22 Adjusting ring
a
Lower delivered pressure
Use small screwdriver
(12)
by turning item (12)
inserted in one of the
counterclockwise.
inner notches of item
(12) Turning item (12)
one notch will adjust
the delivered pressure
approximately 5 psi.
b
Raise delivered pressure
by turning item (12)
clockwise.
3-1016
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