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 TM 9-2320-364-34-1
2-14. LOAD HANDLING SYSTEM (LHS) TROUBLESHOOTING (CONT).
3. HOOK ARM DOES NOT LOAD.
INITIAL SETUP
Tools and Special Tools
References
Tool Kit, General Mechanic's
TM 9-2320-364-10
(Item 240, Appendix F)
Equipment Condition
Pressure Test Kit (Item 165, Appendix F)
Engine OFF, (TM 9-2320-364-10)
Parking brake applied, (TM 9-2320-364-10)
Materials/Parts
Wheels chocked, (TM 9-2320-364-10)
Sealing Compound (Item 62, Appendix B)
Personnel Required
Two
START
1.
KNOWN INFO
TEST OPTIONS
Does hook arm load using DC
Unit Troubleshooting tasks
Operation test.
completed.
valve manual push button?
Hook arm unloads.
REASON FOR QUESTION
POSSIBLE PROBLEMS
If DC valve solenoid is faulty, DC
valve will operate hook arm
Directional control (DC) valve
when manual push button is
faulty.
pushed in but not when it is
Load control valve faulty.
electrically activated by cab
LH hook arm cylinder faulty.
controls.
RH hook arm cylinder faulty.
Go to Step 2 of
NO
this Fault.
YES
Replace directional
control valve
(Para 17-10).
Verify repair, go to
Step 8 of this Fault.
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