Taylor-Dunn AMB Ambulance, Operation, T Roubleshooting And Replacement Parts Manual

Page: 96 / 266

Motor Service
Motor Page 2
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 brush and brush holder
Typical motor with cooling fan indicated by
the arrow