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TM 9-2320-364-20-3
2-2402
11. MIDDLE FRAME DOES NOT UNLOAD IN MANUAL MODE.
INITIAL SETUP
1.
Are LHS hydraulic hoses 2887,
2888, 2889, 2890, 2666 and
2588 free of damage, crimps or
leaks and are fittings free of
leaks?
Tighten loose fitting or
replace hoses
(Para 20-3 and
schematic Fig 2-55).
Verify repair, go to
Step 10 of this Fault.
START
NO
Nothing.
LHS hose leaking or damaged.
Wire 1489 faulty.
Wire 1480 faulty.
Hydraulic selector switch
faulty.
LHS control assembly faulty.
Middle frame lockout relay
faulty.
Wire 1465 faulty.
Wire 1435 faulty.
KNOWN INFO
POSSIBLE PROBLEMS
TEST OPTIONS
Visual inspection.
Leaking or damaged hoses or
fittings may not deliver adequate
supply pressure to main ram
cylinders.
2-28. LOAD HANDLING SYSTEM (LHS) TROUBLESHOOTING PROCEDURES (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)
REASON FOR QUESTION
YES
Read WARNING
on Page 2-2403
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