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TM 9-2320-364-20-3
2-2534
2. HOIST WILL NOT LOWER USING REMOTE CONTROL UNIT (CONT).
4.
Replace controller
circuit card
(Para 18-4).
Verify repair, go to
Step 9 of this Fault.
YES
NO
Hoist operates using manual
control lever mounted on
crane.
At least one other remote
control function operates.
Remote control unit
harness OK.
Controller switch OK.
Controller circuit card faulty.
Remote control unit cable faulty.
Wire from truck remote control
connector outlet to terminal 16
faulty.
Wire from terminal 16 to
solenoid faulty.
Solenoid black wire faulty.
KNOWN INFO
POSSIBLE PROBLEMS
TEST OPTIONS
REASON FOR QUESTION
Voltage test.
STE/ICE-R #89.
If circuit card is faulty, 22 to 28
vdc will not be present at crane
main junction box.
WARNING
Are 22 to 28 vdc measured at
four terminal connector blue
wire with lever in DOWN
position?
Read WARNING
on Page 2-2535
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