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VERIFY REPAIR - TM-9-2320-364-20-3_685
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TM-9-2320-364-20-3 Truck Tractor M1074 and M1075 Palletized Load System (PLS) Manual
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VOLTAGE TEST - TM-9-2320-364-20-3_687
TM 9-2320-364-20-3 2-2564 4.  BOOM WILL NOT LOWER USING REMOTE CONTROL UNIT. INITIAL SETUP 1. Go to Step 2 of this Fault. START YES NO Boom operates using manual   control lever. At least one other remote   control function operates. Remote control unit harness   faulty. Controller switch faulty. Controller circuit card faulty. Remote control unit cable   faulty. Brown Wire from truck remote   control connector outlet to   terminal 14 faulty. White wire from terminal 14 to   solenoid faulty. Solenoid black wire faulty. KNOWN INFO POSSIBLE PROBLEMS TEST OPTIONS REASON FOR QUESTION Voltage test. STE/ICE-R #89. If component or wire supplying voltage to solenoid is loose, faulty or shorted; 22 to 28 vdc will not be present at solenoid. 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) References TM 9-2320-364-10 TM 9-4910-571-12&P Equipment Condition Engine OFF, (TM 9-2320-364-10) Parking brake applied, (TM 9-2320-364-10) Wheels chocked, (TM 9-2320-364-10) Remote control unit connected, (TM 9-2320-364-10) Crane outriggers down, (TM 9-2320-364-10) Mast fully erected, (TM 9-2320-364-10) Are 22 to 28 vdc measured at boom DOWN solenoid harness connector, terminal 1 with crane ON and remote control unit BOOM lever in DOWN position? WARNING Go to Step 8 of this Fault. Read   WARNING on Page 2-2565

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