Küschall CHAMPION User manual

Service Manual

3© Küschall AG,Switzerland | 2012-01
Service Manual
Table of contents
General ......................................................................................................................... 4
Introduction 4
Spare parts and adaptations 4
Tightening Allen screws 4
Torque 5
Checks 5
Identifying and alleviating malfunctions 5
Frame............................................................................................................................ 6
Changing Frame 6
Seat ............................................................................................................................... 7
Fitting seat cover to frame 7
Front seat height (SHv) 7
Rear seat height (SHh) 9
Folding unit 9
Backrest...................................................................................................................... 10
Tension adjustable backrest 10
Backrest height (RH) 13
Backrest angle (RW) 14
Push handles / backrest telescopes 14
Stabilisation bar 16
Footrests..................................................................................................................... 17
Footplate 17
Lower leg length (UL) 17
Footrest mounted in high position 18
Side parts ................................................................................................................... 19
Clothes-guard assembly 19
Mud guard assembly 20
Siderest assembly and adjustment 21
Armrest assembly and adjustment 21
Front wheels............................................................................................................... 22
Replacing a front wheel 22
Replacing a front wheel fork 22
Front wheels, repositioning to the frame 23
Front wheel supporter, adjusting the steering error angle 23
Front wheel supporter, adjusting the trail angle 23
Rear wheels ................................................................................................................ 24
Rear wheels, repositioning 24
Wheel camber, adapter sleeves 24
Distance sleeves 25
Adapterplate 25
Brakes ......................................................................................................................... 26
Fitting / adjusting the parking brake 26
Options & accessories ............................................................................................... 27
Antitipper 27
Tipper aid 28
Transit wheels 29
Cane holder 30

4© Küschall AG,Switzerland | 2012-01
Service Manual
General
Introduction
This service manual is part of the instructions and contains the technical
information for servicing, conguring and repairing a Küschall® wheelchair.
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 
Intermediate – specialist knowledge required 
Dicult – specialist wheelchair assembly knowledge and
experience required

The required tools and their respective sizes are listed above each instruc-
tion.
Tools Symbol
Allen key Ã2x3, 4, 5, 6
Phillips screwdriver Ò2
Straddle spanner 19
Socket spanner/ring spanner 8, 10, 14, 22
Spare parts and adaptations
All spare parts can be purchased from Küschall®'s Customer Services.
An electronic spare parts catalog is available by logging onto
www.kueschall.com. Only original spare parts may be used.
Installing additional adaptations to a Küschall® wheelchair requires the
prior written approval of Küschall® AG.
Tightening Allen screws
Allen keys are not designed for greater forces. When tightening or loo-
sening an Allen screw, it is therefore advisable to apply force to the nut to
prevent the hexagon socket from being damaged.
Tightening and loosening
Turn the nut with a socket spanner (only use a straddle spanner if there
is insucient space) and merely hold the screw tight with the Allen key.
Tightening and loosening if there is no nut
If an Allen screw is directly screwed into a screw thread, the screw must be
tightened using an Allen key.
iEnsure that the Allen key is of good quality and not worn.
ST
SHv
SW
SHh
RH
GL
UL
RW
GB
SB

5© Küschall AG,Switzerland | 2012-01
Service Manual
Torque
All screw connections must be tightened with the torques specied in the following
instructions. Adhering to the given torques requires the use of a torque spanner.
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 specied in the instructions.
jSeveral 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)
Spokes unevenly tensioned Tighten excessively loose spokes
Dirty or damaged wheel bearings Clean or replace bearings
Bearing block of castor fork is not vertical Align bearing block vertically
Front wheels not set to the same height Position the front wheels in such a way that
they touch the ground at the same time
Rear wheels not parallel or axes not aligned Adjust the prestress load on the scissor
mechanism and/or the trail
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
Mount the adapter plate lower on the side
prole
Mount the smaller castor fork
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
Insucient tire pressure in the rear wheels Correct tire pressure
Rear wheels are not parallel Ensure that the rear wheels are parallel
(4° wheel camber)
The front wheels wobble
when moving fast
Insucient 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
The wheelchair is very
dicult to unfold The backrestcover is too tight Loosen the backrestbands a little
Handling seems imprecise The scissor mechanism is not closed properly If required, remove dirt from scissor
mechanism
The scissor mechanism is misaligned Realign the scissor mechanism