Küschall Mentor User manual

Mentor
Technical module

Technical module
1
Copyright © 08/2008,Küschall AG
K-Junior
K-Junior
Changing configurations
Table of contents
1 Adjustment possibilities 2
1.1 Seat width (SB) 2
1.2 Seat depth (ST) 2
1.3 Knee-to-heel length (UL) 2
1.4 Rear seat-to-floor height (SHh) 2
1.5 Front seat-to-floor height (SHv) 3
1.6 Siderest / Armrest 4
1.7 Clothes-guard / Mudguard 4
1.8 Backrest height 4
1.9 Backrest angle 5
2Assembly and adjustment methods 7
2.1 Footrest replacement 7
2.2 Footrest height adjustment 7
2.3 Footrest mounted in high position 7
2.4 Footplate angle adjustment 8
2.5 Front fork replacement 8
2.6 Quick release fork 9
2.7 Front wheel replacement 9
2.8 Rear seat height adjustment 10
2.9 Front seat height adjustment 10
2.10 Tipping point adjustment 11
2.11 Parking brakes assembly and adjustment 11
2.12 Clothes guard assembly or replacement 12
2.13 Mudguard assembly and adjustment 12
2.14 Armrest assembly and adjustment 13
2.15 Rear wheel extension assembly and adjustment 13
2.16 Rear wheel camber adjustment 14
2.17 Control of rear wheel parallelism 15
2.18 Backrest height adjustment 15
2.19 Backrest angle adjustment 17
2.20 Buggy push handle assembly 17
2.21 Antitipper assembly and adjustment 18
2.22 Active-Antitipper assembly and adjustment 19
2.23 Transit wheels assembly and adjustment 19
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Technical module
2
Copyright © 08/2008,Küschall AG
K-Junior 1 Adjustment possibilities
1.1 Seat width (SB)
Available seat widths: SB24 to SB36, in 2 cm steps.
The seat width cannot be modified easily once it has been set. It would be necessary to
replace the seat module, backrest, rear wheel axle and footrest.
This modification is not described in the Mentor.
1.2 Seat depth (ST)
Available seat depths: ST25 to ST40 in 2.5 cm steps.
Adjusting the seat depth requires replacing the entire seat module including the seat
upholstery and seat rails as well as the seat cushion.
1.3 Knee-to-heel length (UL)
The footrest must be attached in a higher or lower position to adjust the leg length.
(Chapter 2.2)
The UL can be adjusted from 30cm to 41cm. For shorter knee-to-heel lengths a high-
mounted footrest must be fitted. (Chapter 2.3)
1.4 Rear seat-to-floor height (SHh)
To adjust the rear seat height, change the position of the seat module on the frame
(Chapter 2.8).The vertical seat brace is available in three sizes for seat heights of 33 cm
to 47 cm.
We generally recommend attaching the vertical seat brace on the lower hole to the
frame.
Rear seat height depending on rear wheel position and size
20‘‘ wheel 22‘‘ wheel 24‘‘ wheel
SHh S M L S M L S M L
33 1
34 2
35 3 5a 1
36 4 5 2
37 6 3 5a
38 7 9a 4 5 1
39 8962
40 10 7 9a 3 5a
41 11 8 9 4 5
42 12 10 6
43 12 11 7 9a
44 12 8 9
45 12 10
46 11
47 12
Please note:
Adjustments made
to the rear seat
height change the
seat angle.The
front seat height
may need to be ad-
justed accordingly.
1
2
3
45
6
7
89
10
11
12
5a
6a
7a
8a 9a
10a
11a
12a
SM L

Technical module
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Copyright © 08/2008,Küschall AG
K-Junior
1.5 Front seat-to-floor height (SHv)
The front seat height depends on several factors that influence each other.
The dimension of the front and rear wheels determine the frame height.The position and
size of the hinge bracket to the seat module as well as the frame, seat depth and rear seat
height influence the front seat height.
1. Frame
The minimum front seat height depends on the combination of front wheels and rear
wheels:
Only choose combinations that are specified in the table above to ensure that the
frame is straight and the front wheel supporters are perpendicular to the ground.
2. Seat module
Once the rear and front wheels as well as the front forks have been defined, the front seat
height can be varied by adjusting the mounting position of the seat module on the frame.
There are 2 sizes of front hinge brackets each with 2 fastening possibilities to choose from:
(Chapter 2.9)
Possible combinations of front and rear wheels
SHv min. Rear wheel 3'' 4'' 5''
38 20‘‘ B A --
40 22‘‘ D C B
43 24‘‘ F E D
Please note:
Adjustments made
to the front seat
height change the
seat angle.The rear
seat height may
need to be adjusted
accordingly.
24''
22''
20''
3'' 4'' 5''
A B C D E F
1cm

Technical module
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Copyright © 08/2008,Küschall AG
K-Junior 1.6 Siderest / Armrest
The standard clothes guard can be complemented with an armrest.
Mounting the armrest Chapter 2.14.
1.7 Clothes-guard / Mudguard
The standard clothes-guard can be replaced by a mudguard. (Chapter 2.12/2.13)
1.8 Backrest height
To adjust the backrest height, either adjust or replace the push handles or replace the
backrest tubes. (Chapter 2.18)
Clothes-guard / mudguard size
Rear wheel
M
L
SHh 20‘‘ 22‘‘ 24‘‘
33 L — —
34 L — —
35 M L —
36 M L —
37 M L —
38 M L —
39 M M L
40 M M L
41 M M L
42 M M L
43MMM
44 — M M
45 — M M
46 — — M
47 — — M
Backrest height depending on push handle and backrest tube
RH No push handles Standard push handles Foldable push handles Upholstery
27SSSSSSS
28.5 S S S S S S S
30SSSSSSS
31.5 S S S S S S M
33LSSSLSM
34.5 L M L S L S M
36LMLSLSM
37.5 L M L S L S L
39 L M L S L M L
40.5 L M L L L M L
42 L L L L L M L
43.5 L L L L L M L
45 L L L L L M L
46.5 L L L L L M L
48 L L L L L M L

Technical module
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Copyright © 08/2008,Küschall AG
K-Junior
1.9 Backrest angle
To adjust the backrest angle re-position the eccentric plate in the backrest joint. (Chap-
ter 2.19)
The following angles can be set (in relation to the seat):
-8
0
+8
-4
+4
0
-8
0
+8
-4
+4
0
-8
0
+8
-4
+4
0
-8
0
+8
-4
+4
0
-8
0
+8
-4
+4
0
-8° -4° 0° +4° +8°

Technical module
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Copyright © 08/2008,Küschall AG
K-Junior

Technical module
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Copyright © 08/2008,Küschall AG
K-Junior
2 Assembly and adjustment methods
2.1 Footrest replacement
Remove the bolts on both sides.
Remove the footrest from the frame and insert
the new one.
Tighten the bolts securely on both sides.M
2.2 Footrest height adjustment
The footrest height can be adjusted in 1 cm
steps.
Remove the bolts from both sides of
footrest.
Slide the tube into the correct position,
replace the bolts on both sides of the
footrest and tighten.M.
The footrest must be firmly attached to the
frame tube.
A high-mounted footrest may be required if
the knee-to-heel length cannot be achieved
with the regular footrest.(Chapter 2.3)
2.3 Footrest mounted in high position
Slide the frame connector for the high-mounted footplate into the frame and
attach with bolt on both sides.M.
Fasten the clamp set with bolt to both sides of the frame, tighten slightly.
Slide the high-mounted footrest in the clamp set to the required height.
Tighten bolt .M
1
1
1
5
23
4

Technical module
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Copyright © 08/2008,Küschall AG
K-Junior 2.4 Footplate angle adjustment
The footplate angle can only be adjusted if the footrest is angle adjustable. Proceed as
follows:
Loosen all four bolts until the footplate can be moved.
Pivot the footplate into the required position and tighten the bolts.M.
The footplate must be firmly secured to the wheelchair with no room for movement.
2.5 Front fork replacement
Remove the bearing block cap by
inserting two screwdrivers into the
grooves and pushing it upward.
Remove the nut and washer .
Remove the front fork .
Check the ball bearing blocks and
replace if necessary.
Attach the new front fork with the
washer and nut and tighten.
Functional check:
Tip the wheelchair 90° backwards, so that the
chair is lying on the backrest and rear wheels.
Turn the fork upwards (position A) and let it
tip downwards.
The fork is tightened correctly when it turns
slightly over the lowest point and stays there
(position B).
The fork hasn’t been tightened sufficiently if
it turns back into the lowest position (position
C). If tightened wrongly, there is a possibility
for the front wheels to start fluttering at high
speeds.
Replace the bearing block cap again.
1
1
2
3
4
5
4
A
B
C