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TM 9-2320-364-20-3
2-2326
Wire 1470 faulty.
Wire 1475 faulty.
Wire 1435 faulty.
Hook arm safe lowering button
faulty.
Wire 1479 faulty.
Wire 1477 faulty.
7. LOSS OF HOOK ARM SAFE LOWERING FUNCTION (CONT).
2.
Is continuity
measured
on wire 1470
at both left side safe lowering
valve harness connectors,
terminal 2 and ground with
main junction box terminal 10
jumpered to ground?
Repair wire 1470
(see schematic
Fig 2-52) or notify
DS Maintenance.
Verify repair, go to
Step 9 of this Fault.
YES
NO
Hook arm operates in manual
mode.
Middle frame operates in
manual mode.
KNOWN INFO
POSSIBLE PROBLEMS
TEST OPTIONS
REASON FOR QUESTION
Continuity test.
STE/ICE-R #91.
If wire 1470 is loose, faulty, or
shorted to ground, 22 to 28 vdc
will not be present between
main junction box terminal 10 to
the left side safe lowering
valves.
WARNING
Read WARNING
on Page 2-2327
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