CONTROLLED SPREADING (M917A1 W/MCS).
DO NOT connect or disconnect MCS remote control when dump body is being
raised or lowered. Failure to follow this warning may cause personnel injury.
When connected, MCS remote control overrides cab control unit. When remote
control is disconnected, cab control activates. To avoid inadvertent opening or
closing of gates, ALWAYS check gate positions and position of toggle switches
on both cab and remote controls before plugging in or unplugging remote con-
trol. Toggle switches should be in CLOSED position. Failure to follow this warn-
ing may cause personnel injury.
DO NOT stand or walk behind dump truck when it is dumping or in raised posi-
tion. When using MCS remote control, always walk or stand to side of dump
body. Failure to follow this warning may result in personnel injury.
Keep hands and feet away from gate openings at all times. Failure to follow this
warning could result in injury to personnel.
Operation requires two personnel, driver and assistant driver.
Follow general dumping instructions in paragraph 2-10, with minor differences.
Differences will be pointed out as they occur.
Follow instructions in paragraph 2-10 to prepare to dump, except for the following steps:
Do NOT unlock tailgate.
Adjust MCS gate openings (paragraph 2-12).
Ensure that toggle switches on MCS control unit inside cab are in CLOSE position (paragraph 2-
Remove MCS remote control (1) from stowage. Ensure that toggle switches (5) are in CLOSED
position. Plug remote control into receptacle (2) at right or left side of MCS tailgate (3).
Move toggle switches (5) to OPEN position. Depending on desired spreading pattern, all gates (4)
or selected gates may be opened.
Raise dump body 2-3 ft (61-91 cm) and stop. Material should begin to spill out through gates (4).
Have driver pull forward with transmission in first gear (TM 9-2320-363-10). Maintain a steady
speed not to exceed 3 mi/h (5 km/h). Have assistant driver check thickness of dumped material to determine if gate
openings need adjusting.
If adjustment is needed, stop dump truck, lower dump body, close gates (4), place transmission in
N (Neutral), and set parking brake. Adjust MCS gate openings (paragraph 2-12).
Maintain a steady speed until all material has been spread. Raise dump body periodically to keep
material flowing evenly through gates (4).