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Page Title:
HYDRAULIC SYSTEM OPERATION UNUSUALLY NOISY. (Cont) |
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 TM 9-2320-364-34-1
High pressure hydraulics [oil under 3,675 psi
(25,339 kPa) pressure] operate this
equipment. Refer to vehicle operator and
maintenance manuals for hydraulic oil
pressure. Never disconnect any hydraulic
line or fitting without first dropping
pressure to zero. Failure to comply
may result in injury to personnel.
Fuel and oil are slippery and can cause falls.
To avoid injury, wipe up spilled fuel or oil with
rags.
NOTE
Use drain pan to catch leaking hydraulic oil.
VISUAL INSPECTION
(1) Remove eight screws, lockwashers,
washers and left side noise
panel. Discard lockwashers.
(2) Remove four screws, lockwashers
and LHS control box cover.
Discard lockwashers.
(3) Remove low speed differential
pressure sensing valve from
multifunction manifold.
(4) Remove and discard three preformed
packings and four packing retainers.
(5) Push plunger inside valve with a non-
metallic probe.
(a) If plunger sticks and does not
move freely up and down, replace
differential pressure sensing valve
(Para 17-18).
(b) If plunger moves freely up and
down, differential pressure
sensing valve is OK.
(6) Lubricate three preformed packings
and four packing retainers with
hydraulic oil and install on valve.
(7) Install low speed differential
pressure sensing valve.
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