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Page Title:
HOOK ARM DOES NOT UNLOAD. (Cont) |
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 TM 9-2320-364-34-1
Adhesives, solvents, and sealing compounds
can burn easily, can give off harmful vapors,
and are harmful to skin and clothing. To avoid
injury or death, keep away from open fire and
use in well-ventilated area. If adhesives, solvent,
or sealing compound gets on skin or clothing,
wash immediately with soap and water.
Do not get under LHS when disconnecting or
connecting connectors or hoses. A hydraulic
malfunction could cause LHS to lower causing
serious injury.
OPERATION TEST
(1) Loosen connector screw and
disconnect connector from safe
lowering solenoid valve on port VA
side of RH hook arm manifold.
(2) With the aid of an assistant, attempt
to unload using cab joystick while
pushing in hook arm safe lowering
button (TM 9-2320-364-10).
(a) If hook arm does not unload,
load control valve is faulty.
Perform Steps (3) through (6)
below and repair RH hook arm
manifold at port VA (Para 17-13).
(b) If hook arm unloads, load control
valve is faulty. Perform Steps (3)
through (6) below and repair LH
hook arm manifold at port VA
(Para 17-13).
(3) Connect connector to safe lowering
solenoid valve on port VA side of RH
hook arm manifold.
(4) Tighten connector screw and coat
head of connector screw with
sealing compound.
(5) Set hydraulic selector switch to OFF
position.
(6) Turn OFF ENGINE switch.
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