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1-17.   15K SELF-RECOVERY WINCH (SRW)
Figure 1-28. Material Handling Crane (MHC) Control Station and REMOTE CONTROL UNIT

TM-9-2320-366-34-1 M1078 Series 2 1/2-Ton 4x4 Light Medium Tactical Vehicles (LMTV) Manual
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TM 9-2320-366-34-1 1-18.   M1084/M1086 MATERIAL HANDLING CRANE (MHC) Figure 1-27. M1084/M1086 Material Handling Crane (MHC) Vehicle models M1084 and M1086 are equipped with a Material Handling Crane (MHC) (1, Figure 1-27) mounted on the frame at the rear of the vehicle. The M1084/M1086 MHC has a lifting capacity of 5,000 lbs (2,270 kgs). The MHC contains an overload shutdown system which monitors boom angle, boom extension, and load weight. If the overload shutdown system senses an overload condition, certain MHC functions become locked out. The vehicle is stabilized during MHC operation by jack cylinders (2). Proximity sensors are attached to the jack cylinders to prevent operation of the MHC unless the jack cylinders are extended to the ground. Outrigger pads (3) are provided and are attached to the bottom of the jack cylinders by quick release pins. All MHC functions are hydraulically controlled by levers at the control station (4). All exposed hydraulic cylinder rods are hard chrome plated to resist corrosion and wear. a. MHC Hydraulic System. The hydraulic reservoir (5) provides for 21 gal (79 L) of fluid. A fluid filter (6) is mounted on the hydraulic reservoir. The filter removes contaminants from the oil and is easily replaced. Hydraulic pressure for the MHC is supplied by a hydraulic pump (7) attached to the rear of the Power Take-Off (PTO) (8). The hydraulic cylinders contain cartridge-type holding valves which lock the cylinder in case of sudden hydraulic pressure loss. A hand operated back-up hydraulic pump (9) allows the operator to lower any load to the ground and stow the MHC if the hydraulic pump fails. 1-35







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