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 TM 9-2320-285-24-2
3-24.
BRAKE CONTROLS MAINTENANCE (CONT)
h.
Tractor Protection Valves (cont).
STEP
LOCATION
ITEM
ACTION
REMARKS
DISASSEMBLY
3
Tractor
a
Retaining ring
Remove
Use retaining ring pliers
protection
(4)
valve
b
Insert assembly
a
Remove From body (17)
(5 thru 16)
b
Position On smooth surface;
plunger
(11) down
c
Screw (6),
Remove
While holding seat (5) down
washer (7),
against spring (10) pres-
and diaphragm
sure
Discard
diaphragm (8)
(8)
d
O-ring (9)
Remove and
discard
e
Spring (10)
Remove
f
Plunger (11)
Remove
g
O-rings (12 and
Remove and
13)
discard
h
Retaining ring
Remove
Use retaining ring pliers
(14)
i
Retainer (15)
Remove
From plunger (11)
and valve
(16)
CLEANING
WARNING
Dry cleaning solvent (P-D-680), used to clean parts is toxic and
flammable. Wear protective goggles and gloves and use only in a well
ventilated area. Avoid contact with skin, eyes, and clothes and don't
breathe vapors. Do not use near open flame or excessive heat and
don't smoke when using it. Failure to do so could cause serious injury.
If you become dizzy while using cleaning solvent, get fresh air and
medical attention immediate- ly. If contact with skin or clothes is made,
flush with large amounts of water. If contact with eyes is made, wash
eyes with water and seek medical aid immediately.
Compressed air must not exceed 30 psi. Wear safety glasses when
drying parts with compressed air. Failure to do so could cause serious
injury to eyes and possible blindness. If you hurt your eyes or if a
foreign object is blown into your eyes, seek medical attention
immediately.
3-203
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