Replacing The Drive Motor; Brakes And Brake Release - Otto Bock B400 Service Manual

Electrostatic charging, caused by friction, for example, can result in discharge (high
INfORMATION
voltages with low current) when touching the wheelchair; however, this does not represent any
health risk. This reduction of comfort can be prevented by attaching an earthing strap to the drive
unit sustainer/wheelchair frame.

6.12 Replacing the Drive Motor

CAUTION
Risk of injury due to electric current. Prior to working on the drive motors turn off the control of the
B00 power wheelchair and disconnect all plug connections to the control/electric module.
Preparation:
Disassemble the drive wheel (see Section .7.3).
❒
Tools:
Open-end wrench, size 13 mm
❒
Steps:
1. Disconnect the motor from the controller.
2. Loosen the four self-locking nuts.
3. Remove and replace the motor, if necessary.
Properly reassemble all components upon termination of the work.
fig. 44 Replacing the drive motor

6.13 Brakes and Brake Release

The brake release mechanism is located on the left and right sides of the motors. It is a functional
component of the drive motors and cannot be repaired separately.
If no braking effect is available, the motors must be replaced (see Section .12).
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