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TM 9-2320-364-20-3
2-2696
10. OUTRIGGERS DO NOT OPERATE (CONT).
13.
Repair red wire (see
schematic Fig 2-58)
or notify DS
Maintenance.
Verify repair, go to
Step 24 of this Fault.
YES
NO
WINCH/CRANE switch in
CRANE position.
Self recovery winch operates.
Hose 2902 OK.
Crane hoses and tubes OK.
Wire 1738 OK.
White wire from truck connector
MC29 to rectifier OK.
Rectifier OK.
White wire from rectifier to
POWER switch OK.
POWER switch OK.
Black wire from POWER
switch to OSS OK.
OSS OK.
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
Voltage test.
STE/ICE-R #89.
If red wire from OSS harness
connector terminal D to crane
junction box, terminal 19 is
loose, faulty or shorted to black
wire, 22 to 28 vdc will not be
input to outrigger/mast
shutdown valve.
WARNING
Are 22 to 28 vdc measured at
crane junction box, terminal
19 with ENGINE switch ON
and crane POWER
switch ON?
Read WARNING
on Page 2-2697
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