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 TM 9-2320-285-24-2
3-23. TREADLE VALVE MAINTENANCE
This task covers:
a. Removal
d. Inspection
b. Disassembly
e. Reassembly
c. Cleaning
f. Installation
INITIAL SETUP
Tools
Personnel Required
No. 1 Common Organizational Maintenance
Two Automotive Repairers MOS 63H
Tool Kit
Socket wrench set
Equipment Condition
Torque wrench
Paragraph
Condition Description
Safety glasses
Retaining ring pliers
Vehicle parked on level
Automotive Mechanic's Tool Kit
surface, engine off, and
Punch
wheels blocked.
Hammer
2-41h(1) All air pressure relieved.
Pliers
Shift lockout group lines and
fittings removed from treadle
Materials/Parts
valve.
Cleaning solvent
Item 1, Appendix C
2-51a
Air brake lines and fittings
Clean cloths
Item 2, Appendix C
removed from treadle valve.
Pneumatic grease
Item 35, Appendix C
2-53
Trailer brakes lines and
Two cotter pins
FSCM 06853 PN 210067
fittings removed from treadle
Cotter pin
FSCM 06853 PN 210492
valve.
O-ring
FSCM 06853 PN 239643
3-33b
Unlatch valve lines and
O-ring
FSCM 06853 PN 239136
fittings removed from treadle
O-ring
FSCM 06853 PN 239645
valve.
STEP
LOCATION
ITEM
ACTION
REMARKS
REMOVAL
1
Cab,
a. Two capscrews
Remove
inside
(1), nuts (2)
and lock
washers (3)
b. Brake treadle
Remove
Lift from top of cab floor
valve assem-
bly
DISASSEMBLY
2
Cab,
a. Retaining ring
Remove
Use retaining ring pliers
underside
(4)
b. Valve insert
Remove
assembly
(items 26
thru 35)
3-162
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