Motor Service; Inspecting The Motor Brushes; Motor Inspection - Taylor-Dunn ET-015-00 Operation, T Roubleshooting And Replacement Parts Manual

Motor Service

INSPECTING THE MOTOR BRUSHES

Typical motor with cooling fan indicated by
the arrow
NOTE: There are four brushes in the motor. The
brushes will not wear at the same rate. It is
recommended that all four brushes are
inspected at the same time.
NOTE: In some vehicle configurations it may not be
possible to inspect all four brushes while the
motor is in the vehicle. Refer to
Transmission Service
information on removing the motor.
1. Make sure the key-switch is in the "OFF"
position, then remove the key.
2. Place the forward-reverse switch in the
center "OFF" position.
3. Set the park brake.
4. Place blocks under the front wheels to
prevent vehicle movement.
5. Disconnect the main positive and
negative cables at the batteries.
6. Look through the brush cover and compare the
top of the brush to the top of the brush holder. If it
is even with or below the top of the brush holder
then the brushes should be removed and
measured. Refer to
section for information regarding removing the
motor brushes.
7. If any one brush is less than or equal to the service
Service Limits
limit specified in
brushes should be replaced.
8. Reconnect the main positive and negative cables
at the batteries.
9. Remove the blocks from behind the wheels,
release the park brake and test drive.
Motor
Page 2
section for
Replacing the Brushes
, then all four
Typical brush and brush holder

MOTOR INSPECTION

Disassembly
1. Remove the motor from the vehicle. See the
Transmission
section for information on
removing the motor.
2. Remove the housing screws from the rear and/or
front of the motor.
3. Remove the armature retaining screws from the
rear housing (if equipped).
4. If this is an enclosed motor, remove the front
housing end.
5. Pull the armature out of the front end of the motor
housing.
6. Remove the nuts off of all of the terminals in the
rear motor housing.
7. Remove the rear motor housing being careful not
to damage the field coil wires.