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© Küschall AG, Schweiz | 2012-07
Service manual
Torque
All screw connections must be tightened with the torques specied in the following
instructions.
Checks
Visual check
Check the entire frame for cracks, especially the areas around joints and welded seams.
Checking the screw connections
Check all screw connections with the torques specied in the instructions.
j
Several screw connections have been secured with safety seals. If these are opened, they
must be secured again using new safety seals.
Identifying and alleviating malfunctions
Malfunction Possible cause Measure
The wheelchair will not
move in a straight line
Incorrect tire pressure in a rear wheel Correct tire pressure
One or more spokes broken Replace defective spoke(s)
Spoke unevenly tensioned Tighten excessively loose spokes
Dirty or damaged wheel bearings Clean or replace bearings
The wheelchair tips
backwards too easily
Rear wheels have been tted too far forward Fit rear wheels further back
Backrest angle too great Reduce backrest angle
Seat angle too great Use longer vertical struts
The brakes engage poorly or
asymmetrically
Incorrect tire pressure in one or both rear wheels Correct tire pressure
Brake setting incorrect Correct brake setting
Roll resistance is too great
Insucient tire pressure in the rear wheels Correct tire pressure
Rear wheels are not parallel Ensure that the rear wheels are parallel
The front wheels wobble
when moving fast
Insucient tension in the front wheel bearings block
Lightly tighten the nut in the bearings block
axle
Front wheel is worn at Replace front wheel
The front wheel is sti or
stuck
Dirty or damaged bearings Clean or replace the bearings
Increased forward tip
tendency
Frame deformed Replace frame
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