Kushall K-Series User Manual - 3 Troubleshooting
Technical module
22
Copyright © 08/2008, Küschall AG
Wheelchairs general
3 Troubleshooting
Defect
Possible cause
Remedy
Wheelchair does not roll
straight
Wrong air pressure in the rear or
front wheels
Correct air pressure
Bearing blocks are not in a vertical
position
1)
Adjust bearing blocks to vertical position
Rear wheels do not run parallel
Correct the parallelism of the rear wheels
Front wheels not adjusted to same
height
1)
Position front wheels so that they both
touch the floor
One or more spokes are broken
Replace defective spoke(s)
Spokes are not equally tightened
Tighten the loose-fitting spokes
Seat height adjustments are not
identical on both sides
1)
Check and correct all seat adjustments
Front wheel bearings are dirty or
damaged
Clean or replace bearing(s)
Wheelchair tips too easily Rear wheels are mounted too far to
the front
Shift wheels backward
Seat angle is too large
Increase rear seat height
Select smaller front forks / wheels
Move front wheel supporters upwards
1)
Backrest angle is too large
Reduce backrest angle
Poor or asymmetric brake
grip
Wrong air pressure in one or both
rear wheels
Correct air pressure
Wrong adjustment of the brake
position
Adjust brake to exert correct pressure
on tyre
Rolling resistance is high
Rear wheels are off track
Adjust parallelism of rear wheels
Tension on front fork axles is too
high
Loosen nut on bearing block axles
slightly
Ball bearings are defect
Check all bearings and replace defect
one(s)
Front wheel axles are restrained by
dirt or hair
Clean axles
Wrong air pressure in the rear or
front wheels
Correct air pressure
Bearing blocks are not vertical
1)
Adjust bearing blocks to vertical position
Backrest does not fold
easily
Clothes-guard fixations are too tight
2)
Slightly loosen fixations on both sides
Clothes-guard is not flipped in
1)
Flip in clothes-guard
Front wheels vibrate
when driving fast
Tension of front fork axle in the
bearing blocks is too low
Tighten nut on bearing block axles
slightly
Rear wheels are not
removable
Axle holder is too tight
1)
slightly loosen rear bolt on the axle
holder
1)
1)
Fusion only
2)
K-Series only