Küschall R33 User manual

Service Manual
KÜSCHALL R33

3
KÜSCHALL R33
© Küschall AG, Switzerland | 2014-07
Service Manual
TABLE OF CONTENTS
GENERAL...................................................................................................................... 4
Introduction 4
Spare parts and adaptations 4
Fastening with hexagon socket bolts 4
Torque 5
Checks 5
Identifying and repairing faults 5
SEAT ...............................................................................................................................6
Seat width (SB) 6
Seat depth (ST) 6
Rear seat-to-floor height (SHh) 6
Rear seat height adjustment – Low impact system 6
Rear seat height adjustment – without Low impact system 7
Tipping point adjustment 8
Front seat-to-floor height (SHv) 10
Seat angle (SW) 10
BACKREST...................................................................................................................11
Replacing the backrest tube 12
Backrest angle (RW) 12
Adjusting the backrest height 13
Replacing the handle 14
Replacing foldable push handles 14
FOOTRESTS ................................................................................................................15
Lower leg length (UL) 15
Replacing footrests 15
Adjusting the footrest height 15
Fitting and adjusting high-mounted footrest 16
Angle-adjustable footplate, adjusting the angle 16
SIDE PARTS .................................................................................................................17
Clothes-guard/mudguard 17
Siderests 19
FRONT WHEELS........................................................................................................ 20
Replacing a front wheel 20
Replacing a front wheel fork 20
REAR WHEELS ............................................................................................................21
Control of rear wheel parallelism 21
Adjusting the removable axle 21
Rear wheel axle replacement 22
BRAKES ....................................................................................................................... 23
Parking brakes assembly and adjustment 23
OPTIONS & ACCESSORIES...................................................................................... 24
Antitipper assembly and adjustment 24
Fitting the pelvic belt 24

4
KÜSCHALL R33
© Küschall AG, Switzerland | 2014-07
Service Manual
GENERAL
Introduction
This service manual is part of the instructions and contains the tech-
nical information for servicing, configuring and repairing a küschall®
wheelchair.
WARNING!
Danger of accident and severe injuries.
If the wheelchair is improperly set it can cause
accidents and severe injuries.
▸Changes to the wheelchair may only be carried out
by the dealer.
To guarantee the required safety and reliability, all wheelchairs must
be comprehensively checked once a year.
In part, assembly and adjustment require extensive experience. For
this reason, the following assembly instructions have been split into
three categories:
Requirement Symbol
Easy – technical understanding required 
Medium – technical knowledge required 
Dicult – technical knowledge and expertise in
assembling wheelchairs required

The required tools and their respective sizes are listed above each
instruction. The instructions include information on the torques with
which the respective screw connections must be tightened. Adhering
to the given torques requires the use of a torque spanner.
Tool Symbol
Allen key Ã3, 4, 5, 8
Phillips screwdriver Ò2
Open-end spanner 8, 10, 11, 19
Socket spanner/Box spanner 8, 10
Spare parts and adaptations
All spare parts may be obtained from the küschall®Customer Service
department. An electronic spare parts catalogue can be found at
www.kuschall.com. Only original spare parts may be used. The writ-
ten authorisation of Küschall AG must be obtained before installing
additional adaptations on a küschall®wheelchair.
Fastening with hexagon socket bolts
Hexagon socket bolts are not designed to withstand an excessive
application of force. When tightening or undoing a hexagon socket
bolt, force must be applied to the nut wherever possible to avoid
damaging the bolt.
Tightening and undoing
Turn the nut using a socket spanner (only use an open-end
spanner if there is insucient space), using the Allen key simply to
stop the bolt turning.
GL
SB
GB

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KÜSCHALL R33
© Küschall AG, Switzerland | 2014-07
Service Manual
Tightening and undoing when no nut is present
If a hexagon socket bolt is screwed directly into a thread, the bolt must be tightened using
the Allen key
iEnsure that the Allen key is of good quality and not worn.
Torque
All bolts must be tightened with the torque specified 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 bolts with the torques specified in the instructions regularly, and adjust if
required.
CAUTION! Several screw connections have been secured with safety seals. If these are opened,
they must be secured again using new safety seals.
High-power and low power adhesives are available. For torque entries notice shall be
made whether an adhesive and which adhesive needs to be used.
Identifying and repairing faults
Fault Possible cause Action
The wheelchair does not
travel in a straight line
Incorrect tyre pressure on one rear
wheel Correct tyre pressure
One or more spokes broken Replace broken spoke(s)
Spokes tightened unevenly Tighten loose spokes
Front wheel bearings are dirty or
damaged Clean or replace the bearings
The wheelchair tips too
easily
Backrest angle too large Reduce backrest angle
Wrong seat position Change seat position
The brakes are gripping
poorly or asymmetrically
Incorrect tyre pressure in one or
both rear tyres Correct tyre pressure
Brake setting incorrect Correct brake setting
The rolling resistance is
very high
Tyre pressure in rear tyres is too low Correct tyre pressure
Rear wheels are not parallel Make rear wheels parallel
Front wheel axles are restrained by
dirt or hair Clean front wheel axles
Bearings are dirty or faulty Replace the bearings
The front wheels wobble
when moving fast
Too little tension on the clevis pin
housing
Tighten the nut on the castor
fork slightly
Front wheel is worn flat Replace front wheel
The front wheel is sti or
stuck Bearings are dirty or faulty Replace the bearings