Broderson IC-400-3B, 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. The
transmission and drivetrain 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 drivetrain 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, which 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 IC-400 is equipped with 3-mode steering: Four-wheel round steering can be used for
making tight turns; 2-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.