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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.
FLOWMETER TEST
(1) Raise middle frame completely
(TM 9-2320-364-10).
(2) Set hydraulic selector switch to
OFF position.
(3) Turn OFF ENGINE switch.
(4) Disconnect hose 2917 male quick
disconnect from LHS control box
female quick disconnect.
(5) Disconnect hose 2588 from LH main
cylinder manifold adapter
port VB.
(6) Connect adapter hose to hose 2588.
(7) Connect adapter hose to main
cylinder manifold adapter port VB.
(8) Connect flowmeter OUT port to
adapter hose connected to
hose 2588.
(9) Connect flowmeter IN port to
adapter hose connected to
LH main manifold.
(10) Completely open flowmeter load
valve.
(11) Set flowmeter to LOW scale.
(12) Connect quick disconnect
hose 2917.
(13) Start engine.
(14) Set hydraulic selector switch to
MAN MF position.
(15) With the aid of an assistant, observe
flowmeter while holding joystick in
UNLOAD position.
(a) If more than 0 gpm (lpm) are
present, perform Steps (16)
through (24) below and replace
LH main cylinder (Para 17-15).
(b) If 0 gpm (lpm) are present,
LH main cylinder is OK.
(16) Put LHS in transit position.
(17) Set hydraulic selector switch to OFF
position.
(18) Turn OFF ENGINE switch.
(19) Disconnect hose 2917 male quick
disconnect from LHS control box
female quick disconnect.
(20) Disconnect flowmeter from two
adapter hoses.
(21) Disconnect adapter hose main
cylinder manifold adapter.
(22) Disconnect adapter hose from
hose 2588.
(23) Connect hose 2588 to main
cylinder manifold adapter port VB.
(24) Connect quick disconnect hose
2917.
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