Traction Drive System; Traction Drive Electrical Circuit; Axle; Drive Motor - Factory Cat MINI-MAG SERIES Service Manual

TRACTION DRIVE SYSTEM

The MiniMAG TD series of scrubbers with Central Command II is powered by an and elec-
tric transaxle system. The trans-axle is self contained and bolts to the bottom of the frame.
The trans-axle is equipped with a 1/2 horsepower motor that transfers power through a
shear key into the differential assembly. The power is then transferred out to the wheels
via the axle shafts. The transaxle with the differential powers the machine while allowing
the machine to turn easily.

TRACTION DRIVE ELECTRICAL CIRCUIT

The traction drive electrical circuit consists of the traction drive motor, controller, handle bar
buttons, potentiometer and the reverse switch. When you engage the handlebar button it
sends a signal to the controller and the controller then energizes the traction motor propel-
ling the machine forward. When the reverse switch is engaged it sends 2 signals to the
controller. One signal instructing the machine to move backwards and one signal instruct-
ing it to move. The controller then energizes the drive motor to propel the machine in
reverse. Both the forward and reverse speeds are regulated by the potentiometer located
on the control panel. The controller has internal protection for the drive motor. It will slow
the machine down if the traction motor draws too many amps for more than 60 seconds. If
the overload continues the controller will shut off the motor and show a diagnostic code on
the LCD display. The motor can be damaged if repeatedly overloaded in a short time. The
average amp draw for transport is 7-9 amps at full speed with all other functions off.

AXLE

The transaxle we use on the magnum scrubber has a 1/2 HP motor mated to a differential
assembly The axle has only 4 serviceable parts on it; the motor, the shear key, the wheel
mounts and the tires.

DRIVE MOTOR

The drive motor is a separately serviced part and is easily replaced.
TIRES & WHEELS
The tires are available in 2 styles. The standard equipment is a pneumatic tire that provides
very good traction in most applications but is subject to puncture from sharp objects. The
optional tire is a solid rubber tire with a steel hub. This solid tire offers superior traction and
it will not go flat.
Mini-Mag Service Manual V1.0
TRACTION DRIVE SYSTEM
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