Motor Removal And Installation - Taylor-Dunn ET-015-00 Operation, T Roubleshooting And Replacement Parts Manual

Motor Service
10. Using the continuity function of digital multi meter,
check the continuity from any one of the
commutator segments and the armature frame. If
it is not an open circuit, then the armature is
shorted and the motor must be replaced.
11. Rotate the motor bearing(s) by hand.
• The bearing should not 'freewheel' but should
come to a smooth stop when rapidly spun by
hand. If the bearing freewheels, then grease is
no longer present in the bearing and it must be
replaced. Refer to
section for information regarding replacing the
armature bearings.
• Feel for any roughness when the bearing is
rotated. If any roughness or grinding is noticed
then the bearing must be replaced. Refer to
Replacing the Bearings
information regarding replacing the armature
bearings.
Assembly
NOTE: If this is an enclosed motor on a vehicle with
a Power Traction primary reduction, then it
is recommended to replace the armature
shaft seal any time the motor is
disassembled.
1. Push the motor brushes just far enough out of the
brush holder so that the brush springs hold them
in place away from the commutator. See the
illustration to the right.
2. Install the rear motor housing to the stator housing.
3. Lightly grease the outside diameter of the armature
bearings.
4. Insert the armature through the stator housing and
seat the bearing into the rear housing.
5. If equipped with armature retaining screws, install
and tighten them at this time.
6. If this is an enclosed motor, lightly grease the
armature shaft seal and install the front motor
housing.
NOTE: If the vehicle is equipped with a belt type
primary reduction then the spring on the
motor seal should be removed. Failure to
remove the spring may result in a high pitched
squeal from the seal.
7. Push the motor brushes into the brush holder until
the brush spring snaps into place. Be certain that
the spring does not rest up against the brush wire.
See the illustrations below.
Motor
Page 4
Replacing the Bearings
section for
MOTOR REMOVAL AND
INSTALLATION
Transmission
See the
removing or installing the motor.
section for information on