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Malfunction
Test or Inspection
Corrective Action
TM 9-2320-304-14&P
4-89
Organizational Maintenance Instructions (Cont)
Table 4-3. Load Handling System (LHS) Troubleshooting (CONT)
LOAD HANDLING SYSTEM (LHS) (CONT)
12. HOOK ARM DOES NOT UNLOAD IN MANUAL MODE (CONT).
WARNING
Remove all jewelry such as rings, dog tags, bracelets, etc. If jewelry or tools contact positive
electrical circuits, a direct short may result. Damage to equipment and injury or death to
personnel may occur.
NOTE
Only remove center screw on engine side of LHS control box cover.
Step 3. Check for 22 to 28 Vdc at hook arm up directional control (DC) valve harness connector
terminal 2 with ENGINE switch ON, hydraulic selector switch in MAN H.A. position, and
joystick in UNLOAD position.
If Vdc measurement is below specification, go to Step 4. of this Fault.
If there are 22 to 28 Vdc go to Step 9. of this Fault.
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