TM 9-2320-364-20-3 2-2692 10.  OUTRIGGERS DO NOT OPERATE (CONT). 11. Repair black 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 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 Voltage test. STE/ICE-R #89. If black wire from crane POWER switch through terminal A to OSS is faulty, 22 to 28 vdc will not be input to outrigger/mast shutdown valve solenoid. WARNING Are 22 to 28 vdc measured at terminal A of top OSS (overload shutdown system) connector removed from OSS with ENGINE switch and crane POWER switch in the ON position? Read   WARNING on Page 2-2693