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TM 9-2320-364-20-3
2-2546
3. HOIST WILL NOT RAISE USING REMOTE CONTROL UNIT.
INITIAL SETUP
NOTE
This problem can occur at the right or left hand remote control connector. Only the right hand connector is illustrated herein.
1.
Are 22 to
28 vdc
measured
at hoist UP solenoid harness
connector, terminal 1 with
crane on and remote control
unit HOIST lever in UP
position?
Go to Step 2 of this
Fault.
START
YES
NO
Hoist operates using manual
control lever.
At least one other remote
control function operates.
Remote control unit harness
faulty.
Controller switch faulty.
Controller circuit card faulty.
Remote control unit cable faulty.
Black wire from truck remote
control connector outlet to
terminal 15 faulty.
White wire from terminal 15 to
solenoid faulty.
Solenoid black wire faulty.
KNOWN INFO
POSSIBLE PROBLEMS
TEST OPTIONS
REASON FOR QUESTION
Voltage test.
STE/ICE-R #89.
If component or white wire
supplying voltage to solenoid is
loose, faulty or shorted; 22 to 28
vdc will not be present at
solenoid.
2-29. CRANE TROUBLESHOOTING (CONT).
Tools and Special Tools
Tool Kit, General Mechanics: Automotive
(Item 74, Appendix G)
STE/ICE-R (optional) (Item 3, Appendix G)
Multimeter (Item 44, Appendix G)
References
TM 9-2320-364-10
TM 9-4910-571-12&P
Equipment Condition
Engine OFF, (TM 9-2320-364-10)
Parking brake applied, (TM 9-2320-364-10)
Wheels chocked, (TM 9-2320-364-10)
Remote control unit connected,
(TM 9-2320-364-10)
Crane outriggers down, (TM 9-2320-364-10)
Mast fully erected, (TM 9-2320-364-10)
Go to Step 8 of this
Fault.
WARNING
Read WARNING
on Page 2-2547
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