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 TM 9-2320-285-24-2
3-33.
FIFTH WHEEL MAINTENANCE (CONT)
b.
Unlatch Valve (cont).
STEP
LOCATION
ITEM
ACTION
REMARKS
CLEANING (cont)
9
(cont)
WARNING
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.
c
All other parts
Clean
Use cleaning solvent P-D-680;
dry with compressed air
INSPECTION
10
a
Hose (2) with
Inspect for:
Replace as an assembly if
connectors
cracks
any defects are
observed
(3 and 17)
wear
chafing
breaks
damaged
threads
b
Tubing (4)
Inspect for:
Replace if defects are
cracks
observed Refer to step 11
chafing
below for replacement
kinks
wear
c
Unlatch valve
Inspect for:
Replace if defects are
(29)
cracks
observed
breaks
nicked or
pitted
sealing
surfaces
d
Plunger (31)
Inspect for:
Replace if defects observed
cracks
or if plunger stem
does not
breaks
move freely when
plunger
distortion
(31) is inserted
into
unlatch valve (29)
e
All other parts
Inspect for:
Replace if defective. Refer
cracks
to step 11 below
for
breaks
replacement of
tubing
damaged
elbows (8 and 12)
threads
3-311
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