Fig. 2 Gear/Brush Replacement
MAINTENANCE
CLEANING
Keep the drive enclosure clean with mild detergents. Never immerse nor use
excessive fluid.
GEAR REPLACEMENT
A plastic intermediate gear protects the drive system from torque overloads. To
replace gear (see Figure 2):
1. Place the FWD-OFF-REV switch in the OFF position.
2. Disconnect the AC line cord from the AC receptacle.
3. Disconnect the motor cable from the controller.
4. Remove housing.
5. Remove front mounting plate.
6. Replace gear/shaft assembly or gear only. See REPLACEMENT PARTS.
7. Reassemble in reverse order.
B. 1-100 rpm
gear set
(included
in service kit
07553-08)
Cap
Motor brush
Gasket
Gear case
cover assembly
A. 6-600 rpm gear
assembly (included
in service kit
07553-06)
MOTOR BRUSH CHECK/REPLACEMENT
NOTE:
Brushes should be checked every 6 months or 2000 operating hours.
1. Place the FWD-OFF-REV switch in the OFF position.
2. Disconnect the AC line cord from the AC receptacle.
3. Disconnect the motor cable from the controller.
4. Remove the 2 rubber caps (see Figure 2), then carefully unscrew each brush
holder on opposite sides of the motor. Withdraw the brush, and examine it for
wear.
NOTE:
Replace both brushes, if either brush is less than 0.300 in long from base
to point.
5. Screw brushes into brush holder on each side of motor and replace rubber caps.
6. Connect motor to controller.
7. Connect AC line cord to AC receptacle.
FUSE REPLACEMENT
1. Place the FWD-OFF-REV switch in the OFF position.
2. Disconnect the AC line cord from the rear of the unit.
3. Remove and check the fuse located on the front panel and replace if defective.
4. Reconnect AC line cord.
Model no.
Description
7552-70
7552-75
Brushes (2/set)
07520-04
07520-04
Brush Cap
07520-03
07520-03
holder
Fuses
77500-06
77500-12
High speed
07553-09
07553-09
gear
Gear Service kit
07553-06
07553-06
Motor only
07552-02
07552-04
Controller only
07552-71
07552-76
Rubber Caps &
07553-03
07553-03
Brushes Kit
5
4
REPLACEMENT PARTS
DANGER:
High voltages exist in the Drive/Controller.
WARNING:
No user serviceable parts are inside of this controller. Refer
servicing to your dealer.
