Service manual

2023 Service Manual V1.0
7
7-1
BRUSH DRIVE SYSTEM
BRUSH DRIVE SYSTEM
The brush drive system on the 2023 series is also a machine drive assist system. This
means that the force created by the pad on the floor is also used to help propel the ma-
chine forward when scrubbing. The system consists of the brush drive motor, brush driver
hub, scrub brush or pad holder, the idler wheel and the adjustment knob. The drive hub is
a “gimbaled” design that helps compensate for irregularities of the floor. Only original fac-
tory equipment brushes should be used on this machine or premature scrub motor failure
may occur. “Will-Fit” brushes are usually not concentric and promote bearing failure”
BRUSH ASSIST
The scrub brush or pad driver is used to propel the machine forward. There is a knob on
the left side of the scrub deck that allows the operator to adjust the amount of propulsion.
The knob applies pressure to a wheel that runs on the top of the scrub brush or pad holder
applying pressure to one side of the brush or pad holder causing the brush or holder to pull
the machine forward.
BRUSH DRIVE ELECTRICAL CIRCUIT
The negative side of the battery connects directly to the scrub brush motor. The positive
side of the battery passes through a relay, from the relay to the 30 amp push button circuit
breaker located on the rear of the control panel and then to the scrub brush motor. The
relay is located on the right front side of the brush wall compartment.
When the operator pushes the green button in the handle bar, this switch sends positive
battery power to the relay’s coil terminal. The negative side of the coil in connected to a
battery negative. When the positive power is received by the relay coil it pulls the relay
contacts closed and turns on the brush motor.
Therefore, when the master switch is on, pushing the green button will turn on the brush
motor. This is true whether the brush is down on the floor or up in the air.