Taylor-Dunn SC 0-90, Руководство по эксплуатации, устранению неисправностей и замене запасных частей

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Maintenance, Service, and Repair
Motor Service
Page 2
MOTOR REMOVAL AND
INSTALLATION
See the
Transmission
section for information on
removing or installing the motor.
INSPECTING THE MOTOR
BRUSHES
Motors with internal cooling fans
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
section for
information on removing the motor.
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
Replacing the Brushes
section for
information regarding removing the motor brushes.
7. If any one brush is less than or equal to the service
limit specified in
Service Limits
, then all four
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.
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.
Typical motor with cooling fan indicated by
the arrow
MOTOR INSPECTION
Disassembly
1. Remove the motor from the vehicle. See the
Transmission
section for information on
removing the motor.
2. Remove the brush cover and pull the brushes out
away from the commutator.
3. Remove the dust cap from the rear motor housing.
4. Place the motor in a press, and press the armature
out of the rear bearing.
Note: Removing the armature will damage the
motor bearing. The motor bearing should be
replaced whenever the armature is removed.
5. Remove the housing screws from the rear motor
housing and remove the housing from the motor.
6. Remove the nuts from the armature studs and
remove the two brush assemblies.
7. Remove the bearing circlip and press the motor
bearing out of the housing and discard.
Inspection
1. Measure the length of each
motor brush.
• If any one brush is less
than or equal to the
service limit specified
i n s e c t i o n
S e r v i c e
Limits
, then all four
b r u s h e s s h o u l d b e
r e p l a c e d . R e f e r t o
R e p l a c i n g t h e
Brushes
section for
information regarding
replacing the motor
brushes.
2. Measure the diameter of
the commutator.
• If the commutator is
less than the minimum
d i a m e t e r s p e c i f i e d
in section
Service
Limits
, then the motor
must be replaced.