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1 Adjustment screws on the wheel lock release housing
2 Threaded rod for readjustment
Incorrect wheel lock settings can lead to a loss of braking
power. Repairs and settings must only be made by authorised personnel. Replace damaged Bowden
cables with new one immediately.
Correct wheel lock settings are essential for safe driving. This is why Otto Bock HealthCare
GmbH recommends inspecting the wheel lock every three months.
To avoid excessive friction, the radius of the Bowden cable must not be less than 10 cm. Dam-
aged Bowden cables must be replaced immediately, for example if individual wires are protruding
or there is a kink in the black sheath. Please contact your dealer.
During the functional test of the wheel lock settings, please observe the following points and
complete the tasks described below:
1. Lock the release lever in position 1.
2. While driving straight forward at approximately 6 km/h, release the joystick in its front-most
position.
3. If the wheelchair maintains its current direction during the delay, repeat the test on a slope of
10% unless this is limited by information on the nameplate.
4. If the wheelchair leaves the current direction, adjust the Bowden cable for the opposite side.
The adjustment process is described in Section 6.8.2 under “Adjusting an over-tightened
Bowden cable”.
5. If the wheelchair tracks properly in both cases, conduct the following test on an even surface:
–
Pull the release bolt on the brake housing. The lever automatically moves forward into
position 2. You should not be able to push the wheelchair with the lever in this position.
If the drive wheels do not lock, loosen the Bowden cable for the side with the wheel that
still rotates by ½ turn (see Section 6.8.2 “Adjusting an over-tightened Bowden cable”.
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