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TM 9-2320-364-20-3
2-2672
10. OUTRIGGERS DO NOT OPERATE.
INITIAL SETUP
1.
Tighten loose
fittings or replace
hose (Para 20-3).
Verify repair, go to
Step 24 of this Fault.
START
YES
NO
WINCH/CRANE switch in
CRANE position.
Self recovery winch operates.
Hose 2902 faulty.
Crane hose or tube faulty.
Wire 1738 faulty.
White wire from truck connector
MC29 to rectifier faulty.
Rectifier faulty.
White wire from rectifier to
POWER switch faulty.
POWER switch faulty.
Black wire from POWER
switch to OSS faulty.
OSS faulty.
Red wire from OSS to crane
junction box, terminal 19 faulty.
Outrigger/mast shutdown valve
harness connector white wire
faulty.
Outrigger/mast shutdown valve
harness connector black wire
faulty.
WINCH/CRANE switch faulty.
Wire 1731 faulty.
Black wire from truck connector
MC29 to system shutdown
relay faulty.
System shutdown relay faulty.
White wire from system
shutdown relay to crane
junction box, terminal 3 faulty.
Main hydraulic pressure valve
harness connector white wire
faulty.
Main hydraulic pressure valve
harness connector black wire
faulty.
KNOWN INFO
POSSIBLE PROBLEMS
TEST OPTIONS
REASON FOR QUESTION
Visual inspection.
Leaking or crimped hose may
not deliver adequate supply
pressure to crane.
2-29. CRANE 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)
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
Is hose 2902 free of damage
crimps or leaks?
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