1-21. M1084/M1086 MATERIAL HANDLING CRANE (MHC)
Figure 1-26. Material Handling Crane (MHC)
a. Material Handling Crane (MHC). The MHC (1) (Figure 1-26) is mounted on the frame
at the rear of the vehicle. The 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; hoist up, boom telescope out, and boom up functions become locked out.
(1) The vehicle is stabilized during MHC operation by jack cylinders (2). Proximity sensors
(3) are attached to the jack cylinders to prevent operation of the MHC unless the jack
cylinders are extended to the ground. Outrigger pads (4) are provided and are attached
to the bottom of the jack cylinders by quick release pins (5). All MHC functions are
controlled by levers at the control panel (6).