Broderson RT-400-A, Operation And Maintenance Manual

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The powershift transmission is controlled through the series of buttons on the 12-button
panel to the right of the operator. There are two ranges for this transmission and 3 gears in
each range for FORWARD and REVERSE . The shifting is electronically-controlled. T he
transmission and drive train components can be damaged by shifting from forward to reverse
or vice versa while the unit is in motion, or while the engine speed is above 1000 RPM. The
transmission and drive train components can also be damaged by changing range from Low
to High or vice versa while the machine is in motion. To shift the range of the transmission,
the machine must be at a complete STOP. An electronic interlock built into the control
system will only allow the range to shift if the machine is in N/P. The control system will
default the transmission to the N/P state when the engine is started. The parking brake
switch prevents driving with the brake on and engages the transmission to neutral.
Normal engine speed control uses the foot accelerator pedal. A three - position switch on the
main display screen provides preset engine speeds. In addition , there are buttons on the
main display screen to increment and decrement the engine speed once the preset engine
speed has been engaged. Parking brake must be set to activate system. Press the preset
button once to engage the low idle state of the engine, a second time to engage the mid-
range set point of 1200 RPM, and a third time to engage the high idle set point of 1800 RPM.
.
Four-wheel or 2-wheel drive is selected from the 12-button powertrain panel located to the
right of the operator. The transmission and drivetrain components can be damaged if
attempting to shift from 2-wheel drive to 4-wheel drive, or vice versa, while the machine is in
motion. To shift from 2-wheel drive to 4-wheel drive, or vice versa, the machine must be at a
complete STOP. An electronic interlock built into the control system that will only allow the
operator to change from 2-wheel drive and 4-wheel drive if the machine is in N/P. Avoid 4 -
wheel drive operation on pavement except for short distances.
THREE-MODE STEERING FUNCTIONS
The RT-400 is equipped with three-mode steering: Four-wheel round steering can be used
for making tight turns; two-wheel front steering should be used for traveling long distances;
crab steering can be used for maneuvering in tight places. Switches on the 12-button panel
to the right of the operator provide the mode selection. Electronic sensors and controls
automatically sense when the wheels are centered, as they steer past the centered position,
once a new mode is selected. The steering wheel is directly mounted to the steering control
unit of the all-hydraulic power steering system. The steering system will provide limited
steering even if the engine should stop running.