Adjusting The Rear Wheels; Adjusting The Horizontal Position Of The Rear Wheels; Adjusting The Rear Wheel Axle - Otto Bock Voyager Evo Service Manual

Service Work

3.10.5 Adjusting the Rear Wheels

CAUTION
Lack of fine adjustment of the rear wheels
Tipping over, falling of the user due to incorrect adjustment
► Check the standard adjustments of the wheelchair for stability against tipping and function of the rear wheels.
Avoid any extreme settings.
CAUTION
Incorrectly adjusted wheelbase
Tipping over, falling of the user due to unstable settings
► Please note that with the rear wheel in the front position and with an unfavourable body position, the user may
tip backwards even on level ground.
► Use an anti-tipper for inexperienced users and with extreme settings of the rear wheel.
► Be sure to position the rear wheels towards the rear for transfemoral amputees. This improves the stability of
the wheelchair.
CAUTION
Incorrect mounting of the camber module
Tipping over, falling of the user due to lack of adhesion
► Do not pull the camber module out too far. During installation the whole camber module must be fully
enclosed by the clamping fixture.
INFORMATION
Changing the rear wheel position can also change the angle between the caster wheel journal and the ground.
However, this must be approx. 90°. The knee lever wheel lock also has to be readjusted.

3.10.5.1 Adjusting the Horizontal Position of the Rear Wheels

The horizontal rear wheel position can be changed by sliding the axle assembly horizontally on the seat tubes.
Changing the rear wheel position has the following effects:
Position of rear wheel
Move to rear
Move forwards

3.10.5.2 Adjusting the Rear Wheel Axle

The axle assembly is continuously adjustable horizontally on the seat tubes.
1) Remove the wheels.
2) Pull the side panels out of the guides on the side panel mountings.
3) Loosen the connection between the seat plate or seat upholstery and the seat tube clamps:
→ With a seat plate: Loosen the Allen head screws between the seat plate and seat tube clamps (see
Fig. 72, item 1).
→ With seat upholstery: Loosen all Allen head screws between the seat upholstery and seat tube clamps
(see Fig. 73, item 1). Remove the seat upholstery.
4) Loosen the Allen head screws respectively between the seat tube clamps and seat tubes (see Fig. 72, item 2).
5) Move the axle assembly to the desired position (see Fig. 74).
28 | Ottobock
Effects
• Larger wheelbase
• Larger turning circle
• Greater stability of the wheelchair
• Wheelchair is harder to tip backwards when crossing obstacles
• Position recommended for inexperienced users
• Smaller wheelbase
• Less load on caster wheels = greater manoeuvrability
• Less stability of the wheelchair
• Wheelchair is easier to tip backwards when crossing obstacles
INFORMATION: An anti-tipper can be installed if necessary.
• Position recommended only for experienced users
Voyager evo