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TM 9-2320-364-20-3
2-2334
5.
Are 22 to 28 vdc measured at
main junction box terminal 9
with ENGINE switch in the ON
position?
Go to Step 1 of Fault 4
of this chapter.
YES
NO
Hook arm operates in manual
mode.
Middle frame operates in
manual mode.
Wire 1470 OK.
Wire 1475 OK.
Wire 1435 faulty.
Hook arm safe lowering button
faulty.
Wire 1479 faulty.
Wire 1477 faulty.
KNOWN INFO
POSSIBLE PROBLEMS
TEST OPTIONS
REASON FOR QUESTION
Voltage test.
STE/ICE-R #89.
If component supplying voltage
to main junction box terminal 9
is loose, faulty, or shorted to
ground, 22 to 28 vdc will not be
present at safe lowering
buttons.
7. LOSS OF HOOK ARM SAFE LOWERING FUNCTION (CONT).
WARNING
Read WARNING
on Page 2-2335
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