1-18. M1084/M1086 MATERIAL HANDLING CRANE (MHC) (CONT)
Figure 1-28. Material Handling Crane (MHC) Control Station and REMOTE CONTROL UNIT
b. MHC Control Station. All MHC functions can be controlled by the operator from the control station (1, Figure 1-28).
A lever controlled valve (2) is provided for each control function. All control valves are spring-loaded and will return to
the center, or neutral, position when they are released. The control valves are proportionately variable. A small
movement from the neutral position results in a small change in the function which that valve controls. A larger
movement from the neutral position results in a faster change. The function of each control lever is identified on the
end of the control knob (3).
c. MHC REMOTE CONTROL. The MHC REMOTE CONTROL UNIT (4) permits operation of the MHC from either side
of the vehicle. This feature allows the operator to keep the load in sight at all times. A remote control switch (5)
activates power to the remote control connector (6). The REMOTE CONTROL UNIT is attached to the MHC by an
electrical cable. When the REMOTE CONTROL UNIT is active, solenoids on the control valves respond to input from
the REMOTE CONTROL UNIT. The levers on the REMOTE CONTROL UNIT are proportionately variable. A small
change in lever position results in a small change in the function controlled by that lever. A larger change in lever
position results in a faster change in function. The levers on the REMOTE CONTROL UNIT are also spring-loaded and
will return to the neutral position when released. The REMOTE CONTROL UNIT can be used to operate HOIST
up/down, BOOM up/down, TELESCOPE in/out, and SWING clockwise/counterclockwise.