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Page Title:
MIDDLE FRAME DOES NOT UNLOAD. (Cont) |
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 TM 9-2320-364-34-1
The LHS hydraulic system operates at oil
S
pressures up to 3675 psi (25,339 kPa).
Never disconnect any hydraulic line or
fitting without first dropping pressure
to zero. Failure to comply may result in
serious injury or death to personnel.
Fuel and oil are slippery and can cause
S
falls. To avoid injury, wipe up spilled
fuel or oil with rags.
PRESSURE TEST
(1) Disconnect hose 2917 male quick
disconnect from LHS control box
female quick disconnect.
(2) Remove plug from main manifold,
port TPMB.
(3) Remove preformed packing and
backup ring from plug. Discard
preformed packing and backup ring.
(4) Connect pressure gage to main
manifold, port TPMB.
(5) Connect quick disconnect
hose 2917.
(6) Start engine (TM 9-2320-364-10).
(7) Set hydraulic selector switch to
MAN MF.
(8) With the aid of an assistant, observe
pressure gage while holding
joystick in UNLOAD position.
(a) If more than 1300 psi (8964 kPa)
are present, perform Steps (9)
through (16) below and replace
LH (outboard) load control valve
(Para 17-6).
(b) If 1300 psi (8960 kPa) or less
are measured, load control valve
is OK.
(9) Put LHS in transit position.
(10) Set hydraulic selector switch to OFF
position.
(11) Turn OFF ENGINE switch.
(12) Disconnect hose 2917 male quick
disconnect from LHS control box
female quick disconnect.
(13) Remove pressure gage from main
manifold.
(14) Lubricate preformed packing and
backup ring with hydraulic oil.
(15) Install preformed packing and
backup ring on plug and install
plug in main manifold, port TPMB.
Tighten to 96 lb-in (11 N.m).
(16) Connect quick disconnect
hose 2917.
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