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TM 9-2320-364-20-3
2-2362
9. HOOK ARM DOES NOT UNLOAD IN MANUAL MODE.
INITIAL SETUP
1.
Are LHS hydraulic hoses 2881,
2882, 2891, or 2892 free of
damage, crimps or leaks and
are fittings free of leaks?
Tighten loose fittings
or replace hose
(Para 20-3 and
schematic Fig 2-54).
Verify repair, go to
Step 10 of this Fault.
START
NO
Nothing.
LHS hoses leaking or damaged.
LHS tubes leaking or damaged.
Wire 1489 faulty.
Wire 1482 faulty.
Hydraulic selector switch
faulty.
LHS control assembly faulty.
Wire 1464 faulty.
Wire 1435 faulty.
KNOWN INFO
POSSIBLE PROBLEMS
TEST OPTIONS
REASON FOR QUESTION
Visual inspection.
Leaking or damaged hoses or
fittings may not deliver adequate
supply pressure to hook arm
cylinders.
2-28. LOAD HANDLING SYSTEM (LHS) TROUBLESHOOTING (CONT).
Tools and Special Tools
Tool Kit, General Mechanic’s: Automotive
(Item 74, Appendix G)
STE/ICE-R (optional) (Item 3, Appendix G)
Multimeter (Item 44, Appendix G)
Jumperwire
Equipment Condition
Engine OFF, (TM 9-2320-364-10)
Parking brake applied, (TM 9-2320-364-10)
Wheels chocked, (TM 9-2320-364-10)
References
TM 9-2320-364-10
TM 9-4910-571-12&P
WARNING
Materials/Parts
Lockwasher (4) (Item 180, Appendix F)
Adhesive (Item 8, Appendix C)
YES
Read WARNING
on Page 2-2363
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