Scrub System, Cylindrical
120
Service Manual – SC6500
™
Scrub Brush Motor
Note:
It is not necessary to remove the complete scrub deck assembly from the machine to service
an individual scrub brush motor.
1. Remove the
Side Skirt Assembly
on the side of the deck
that needs the scrub motor
replaced.
2. Slide out the
Hopper
.
3. With the scrub brushes
installed in the deck, press the
Scrub On button to lower the
deck to the floor.
Service Note:
Once
the brush deck is in the
lowered position, don’t
turn the key switch off
until you disconnect the
battery pack (push in the
Emergency Disconnect).
This will prevent
the scrub deck from
automatically rising
when the key is turned
off.
4. Turn the key switch off.
5. Remove the two hex nuts (10 mm socket) and Phillips screw holding the
Belt Guard
and remove the
Belt
Guard
.
6. Remove the four motor mount
Screws
holding the
Scrub Motor
to its deck mount. Also note that the
Scrub
Motor
may stick to the motor mount, so be careful and watch your fingers as the motor will drop.
7. Turn the
Scrub Motor
clockwise to access the motor terminal studs. Note the wire connections for correct
reassembly, then remove both motor wires.
8. Lower the deck assembly to the deck actuator’s maximum down position (travel) to get the clearance
needed to remove the motor from the machine. You can do this either of two ways:
• Reconnect the battery, then lower the scrub deck in the service test mode. (Refer to the
Control
System/Service Test Mode
section.)
• Connect the actuator power cord adapter to the deck actuator motor and run (lower) the deck housing.
(Refer to the
Drive Nut Adjustment
section for details.)
9. Pull and push the
Scrub Motor
back toward the rear of the machine to clear the chassis supports and
remove it at the
Hopper
.
10. To install a Scrub Brush Motor:
a. Follow the above steps in reverse order with the exception that the drive belt tension must be
reduced to allow the installation of the four motor mount
Screws
.
b. Refer to the
Scrub Brush Belt Replacement
section and follow the instructions on how to replace or
tension the belt.
Belt Guard
Side Skirt
Assembly
Hopper
Screw (4)
Scrub
Motor
