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TM 9-2320-364-34-1
Remove all jewelry such as rings, dog tags, bracelets, etc. If jewelry or tools contact positive electrical
circuits a direct short may result. Damage to equipment, injury or death to personnel may result.
Do not stand under crane. Mechanical failure and operator error can cause injury or death to personnel.
OPERATION TEST
(1) Loosen six screws and remove six
clips from crane main junction box
cover.
(2) Remove cover from junction box.
(3) Connect junction box terminals 1
and 19 using jumper wire.
(4) Disconnect top connector from OSS
box.
(5) Start engine (TM 9-2320-364-10).
(6) Set WINCH/CRANE switch to
CRANE position.
(7) Set hydraulic selector switch to
CRANE/SRW position.
(8) Set crane main POWER switch to
ON position.
(9) Attempt to operate boom and hoist
functions using BOOM,
TELESCOPE and HOIST control
(a)  If functions do not operate,
perform Steps (12) through (15)
below and go to Step 5 of this
Fault.
(b)  If functions operate, perform
Steps (10) through (17) below
and go to Step 3 of this Fault.
(10) Position boom so that OSS box is
accessible for repairs.
(11) Telescope boom out completely.
(12) Set crane main POWER switch to
OFF position.
(13) Set hydraulic selector switch to OFF
position.
(14) Turn OFF ENGINE switch.
(15) Remove two screws and disconnect
four white wires from crane main
junction box, terminal 18.
(16) Disconnect jumper wire from crane
main junction box terminals 1
and 19.
(17) Connect connector to OSS box.

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