TM-9-2320-283-34-2
TRUCK TRACTOR, LINE HAUL, 50,000 GVWR, 6X4, MQ15A1
TECHNICAL MANUAL; DIRECT SUPPORT AND GENERAL SUPPORT MAINTENANCE
DECEMBER 1983
TM-9-2320-283-34-2 - Page 190 of 570
TM 9-2320-283-34-2
BRAKE SYSTEM.
3-80. BRAKE TREADLE VALVE REPAIR (Continued).
LOCATION/ITEM
ACTION
REMARKS
Never work on air system components
without first draining
air pressure.
Failure to follow this precaution can
result in serious injury.
1. Retainer (26).
Remove from bottom of item
(6).
2. Screw (2), washer
Remove from top of item (6).
Do not remove item (5)
(3),
and diaphragm
unless damaged or loose.
(4).
Discard item (4).
3. Valve (6).
Clamp in vise so that item
(14) may be removed.
4. Piston (14).
Using pliers, grasp item (25)
and remove entire assembly
of item (14).
5. Piston (28).
Remove from upper part of
Use a heavy gage wire
item (1).
with the end bent at
a 90 degree angle.
Insert bent end through
center hole of item
(28) and pull.
6. Body (1).
Remove from vise.
7. Two packings (15)
Remove from item (14).
Discard items (15) and
and one packing
(16).
(16).
8. Piston (14).
Mount so top and bottom are
Make certain item (21)
secured against vise jaws.
is compressed while in
vise.
Do not compress
item (25).
9. Nut (25).
Remove from item (7).
Discard item (25).
Insert a screwdriver
through top of item (8)
and onto item (7) to
prevent turning while
removing item (25).
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