Factory Cat MINI-MAG SERIES, Service Manual

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Mini-Mag Service Manual V1.0
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BRUSH DRIVE SYSTEM
BRUSH ASSIST SYSTEM
The brush drive system on the MiniMAG 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 ASSIST STRENGTH
First adjust the brush deck pressure to assure it is operating in the green area. Next, adjust
the propulsion strength on a flat level part of the surface you are scrubbing. With the brush
motor off, the brush head down and with the scrub brush or pad driver/pad combination you
will be using adjust the propulsion strength. Test the amount of propulsion and readjust as
necessary making sure to keep the brush pressure in the green area, Be careful that you
do not set the propulsion level too high or the machine may become uncontrollable and
unsafe or not perform acceptably.