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TM 9-2320-364-20-3
2-2572
4. BOOM WILL NOT LOWER USING REMOTE CONTROL UNIT (CONT).
5.
Replace cable.
Verify repair, go to
Step 9 of this Fault.
YES
NO
Boom operates using manual
control lever.
At least one other remote
function operates.
Remote control unit harness
OK.
Controller switch OK.
Controller circuit card OK.
Remote control unit cable
faulty.
Brown Wire from truck remote
control connector outlet to
terminal 14 faulty.
White wire from terminal 14 to
solenoid faulty.
Solenoid black wire faulty.
KNOWN INFO
POSSIBLE PROBLEMS
TEST OPTIONS
REASON FOR QUESTION
Continuity test.
STE/ICE-R #91.
If there is no continuity; 22 to 28
vdc will not be present in crane
junction box.
WARNING
Is continuity measured
between remote control unit
cable connectors from
terminal M to terminal M?
Read WARNING
on Page 2-2573
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