Otto Bock Avantgarde CV User manual

Service manual
Avantgarde CV / CS / CLT

Introduction1 5.........................................................................................................................................................
Foreword1.1 5.............................................................................................................................................
Support1.2 5...............................................................................................................................................
Product overview1.3 5..................................................................................................................................
Safety2 8....................................................................................................................................................................
Explanation of warning symbols2.1 8..............................................................................................................
General safety instructions2.2 8.....................................................................................................................
Service Work3 8.......................................................................................................................................................
General Information3.1 8..............................................................................................................................
Instructions for adjustment3.2 9.....................................................................................................................
Maintenance Schedule3.3 9..........................................................................................................................
Required Tools3.4 9.....................................................................................................................................
Special features of the Avantgarde CLT3.5 9...................................................................................................
Assembly A: Frame3.6 9...............................................................................................................................
Replacement Work on the Frame3.6.1 9............................................................................................................
Replacing the Front Frame Part3.6.1.1 9..............................................................................................................
Replacing the Rear Frame Part3.6.1.2 10.............................................................................................................
Replacing the Cross-Brace/Cross-Brace Bracket3.6.1.3 11...................................................................................
Replacing the Joint Tubes3.6.1.4 11....................................................................................................................
Replacing the Seat Tube Supports3.6.1.5 12........................................................................................................
Retrofitting the Vertical Accessory Mount3.6.2 12...............................................................................................
Installing and adjusting the anti-tipper3.6.3 13....................................................................................................
Installing the anti-tipper3.6.3.1 13........................................................................................................................
Replacing the Pivot Arm3.6.3.2 14.......................................................................................................................
Replacing Anti-Tipper Rollers3.6.3.3 14...............................................................................................................
Adjusting the Anti-Tipper3.6.3.4 14......................................................................................................................
Retrofitting the transport wheels3.6.4 15............................................................................................................
Retrofitting the Horizontal Accessory Mount3.6.5 16...........................................................................................
Retrofitting the Tip-Assist3.6.6 16.....................................................................................................................
Retrofitting the Crutch Holder3.6.7 16...............................................................................................................
Retrofitting the Frame Pads (CS/CLT only)3.6.8 17............................................................................................
Assembly B: Footrest3.7 17..........................................................................................................................
Adjusting the Foot Rests/Tube Foot Rest/Foot Plates3.7.1 17..............................................................................
Replacement Work on the CV Model3.7.2 17.....................................................................................................
Replacing the Foot Rest3.7.2.1 17.......................................................................................................................
Replacing the Foot Rest Bar/Swivel Segment3.7.2.2 18.........................................................................................
Replacing the Foot Plate3.7.2.3 18......................................................................................................................
Replacing the Pivot Bearing3.7.2.4 19.................................................................................................................
Replacing the Locking Device3.7.2.5 19..............................................................................................................
Retrofitting the Heel Strap3.7.2.6 19....................................................................................................................
Elevating Foot Rest with Automatic Length Adjustment3.7.2.7 20............................................................................
Retrofitting the Elevating Foot Rest3.7.2.7.1 20........................................................................................................
Replacing the Foot Rest Bar3.7.2.7.2 20.................................................................................................................
Replacing the Calf Pads3.7.2.7.3 21......................................................................................................................
Replacing the Retaining Plate3.7.2.7.4 21...............................................................................................................
Replacement work on the CS and CLT model3.7.3 21........................................................................................
Replacing the Foot Rest Bar3.7.3.1 21.................................................................................................................
Replacing the Foot Plate3.7.3.2 22......................................................................................................................
Replacing the Foot Plate3.7.3.3 22......................................................................................................................
Replacing the Tube Foot Rest3.7.3.4 22...............................................................................................................
Replacing the Tube Foot Rest Mounting3.7.3.5 23................................................................................................
Assembly C: seat, seating system3.8 23.........................................................................................................
Replacing the Standard/Business Seat Upholstery3.8.1 23..................................................................................
Replacing the Seat Upholstery, Adaptable3.8.2 23.............................................................................................
Table of contents
2
Table of contents
Avantgarde CV / CS / CLT

Cleaning the Seat Upholstery3.8.3 24...............................................................................................................
Cleaning Seat Cushions3.8.4 24......................................................................................................................
Assembly D: back/push handle3.9 25.............................................................................................................
Replacement Work on the Push Handles3.9.1 25...............................................................................................
Replacing the "standard" push handles3.9.1.1 25.................................................................................................
Retrofitting the "height-adjustable" push handles3.9.1.2 25....................................................................................
Retrofitting the "height-adjustable/removable" push handles3.9.1.3 25....................................................................
Retrofitting the "folding" push handles3.9.1.4 26...................................................................................................
Replacing the hand grips3.9.1.5 26.....................................................................................................................
Replacing the Back Upholstery3.9.2 28.............................................................................................................
Replacing the Back Upholstery, Standard3.9.2.1 28..............................................................................................
Replacing the Back Upholstery, Adaptable3.9.2.2 28.............................................................................................
Replacing the Back Tubes3.9.3 29...................................................................................................................
Replacing the Angle-Adjustable Back Tubes3.9.4 29...........................................................................................
Assembly E: Side Panels3.10 30.....................................................................................................................
Replacement work on "standard" and "clothing protector" side panel3.10.1 30.......................................................
Replacing the side panel3.10.1.1 30......................................................................................................................
Replacing the Side Panel Mounting3.10.1.2 31.......................................................................................................
Replacement Work on the Desk Side Panel3.10.2 31............................................................................................
Replacing the Desk Side Panels3.10.2.1 31...........................................................................................................
Replacing the Side Panel Mounting3.10.2.2 32.......................................................................................................
Replacing the Seat Tube Support3.10.2.3 32.........................................................................................................
Replacing the Retaining Clip3.10.2.4 32................................................................................................................
Replacing the Pivot Pin3.10.2.5 32........................................................................................................................
Replacing the Strut3.10.2.6 33.............................................................................................................................
Replacing the Arm Rest Pad3.10.2.7 33.................................................................................................................
Assembly F: Caster Wheels3.11 33.................................................................................................................
Changing the installation position of the caster head3.11.1 33...............................................................................
Replacing the caster head3.11.2 34....................................................................................................................
Adjusting the Caster Wheel Journal Angle3.11.3 34..............................................................................................
Replacing/Changing the Installation Position of the Caster Wheels3.11.4 35...........................................................
Replacing the Caster Fork3.11.5 36...................................................................................................................
Replacing the Eccentric Disc3.11.6 36................................................................................................................
Retrofitting the Caster Fork System Frog Legs (spring-mounted)3.11.7 36..............................................................
Retrofitting the seat height adapter3.11.8 37........................................................................................................
Assembly G: Rear Wheels3.12 38...................................................................................................................
Adjusting the Rear Wheels/Rear Wheel Adapters3.12.1 38....................................................................................
Rear Wheel Adapter, Standard3.12.2 38.............................................................................................................
Replacing the Rear Wheel Adapter, Standard3.12.2.1 38.........................................................................................
Installing the Fitting3.12.2.2 39.............................................................................................................................
Shock Absorber System3.12.3 40......................................................................................................................
Retrofitting the Shock Absorber3.12.3.1 40............................................................................................................
Installing the Fitting3.12.3.2 41.............................................................................................................................
Wheelbase extension3.12.4 41...........................................................................................................................
Retrofitting the Wheelbase Extension3.12.4.1 41.....................................................................................................
Installing the Fitting3.12.4.2 42.............................................................................................................................
Changing the Rear Wheel Camber3.12.5 42.......................................................................................................
Changing the rear wheel camber with a rear wheel adapter3.12.5.1 43......................................................................
Changing the rear wheel camber with a shock absorber3.12.5.2 43..........................................................................
Maintenance Work on the Rear Wheel3.12.6 44...................................................................................................
Replacing the push rings / adjusting the "narrow/wide" mounting position3.12.6.1 44.................................................
Replacing/Retrofitting a Spoke Protector3.12.6.2 44...............................................................................................
Tensioning the spokes; adjusting the out-of-round3.12.6.3 45...................................................................................
Adjusting the Quick-Release Axle3.12.6.4 45..........................................................................................................
Retrofitting the Tetra Axle3.12.6.5 45.....................................................................................................................
Inner tube, rim tape and tyre replacement3.12.6.6 46..............................................................................................
3Avantgarde CV / CS / CLT
Table of contents

Assembly H: Wheel Lock/Brake3.13 47............................................................................................................
Replacing the knee lever wheel lock3.13.1 47......................................................................................................
Replacing the Brake Block3.13.2 48...................................................................................................................
Retrofitting the Wheel Lock Lever Extension3.13.3 48...........................................................................................
Attaching the knee-lever wheel lock for one-handed operation3.13.4 48..................................................................
Retrofitting the Drum Brake3.13.5 49..................................................................................................................
Adjusting the Braking Force of the Drum Brake3.13.6 50......................................................................................
Retrofitting the Scissor Wheel Lock3.13.7 51.......................................................................................................
Adjusting the wheel locks3.13.8 52.....................................................................................................................
Additional options3.14 54...............................................................................................................................
Retrofitting a Lap Belt3.14.1 54..........................................................................................................................
Retrofitting a Tray3.14.2 54................................................................................................................................
Retrofitting a fixation kit3.14.3 54........................................................................................................................
Installing the 481S64=SK010 fixation kit (Avantgarde CS)3.14.3.1 54........................................................................
Installing the 481S64=SK015 fixation kit (Avantgarde CV)3.14.3.2 55........................................................................
Technical data4 56...................................................................................................................................................
Appendices5 59........................................................................................................................................................
Torque values of the screw connections5.1 59.................................................................................................
Maintenance Schedule5.2 60........................................................................................................................
4 Avantgarde CV / CS / CLT
Table of contents

1 Introduction
1.1 Foreword
• Regular maintenance is important – it improves safety and increases the lifespan of the product.
• All Mobility products should be inspected and serviced once a year.
• However, we recommend inspecting, readjusting, and if necessary servicing the product every 6 months if the
product is used frequently, by growing children or by users with changing clinical conditions.
• Only use original spare parts for all service and maintenance work. The service and maintenance tasks
described here should only be completed by trained, qualified personnel and not by the user of the device.
• This service and maintenance manual refers to the respective spare parts catalogues and the instructions for
use of the described products. Please use these documents together.
• Use the maintenance schedule (checklist) as a template for making copies. Retain completed maintenance
schedules and provide the customer with a copy.
Instructions for Use (qualified per
sonnel)
Instructions for Use (user)
Avantgarde CV, CS, CLT 647G585=* 647G689=*
1.2 Support
Your national Ottobock team will be happy to answer any technical questions. The contact addresses and tele
phone numbers can be found on the back inside cover of the service manual.
1.3 Product overview
1
Avantgarde CS
5Avantgarde CV / CS / CLT
Introduction

Maximum load (in combination with double cross-brace): 140 kg
Thanks to its closed frame geometry, the Avantgarde CS allows very rigid and sporting use.
1 Seat/seat pad 9 Rear wheel with push ring
2 Side panel 10 Quick-release axle release button
3 Back/back upholstery 11 Double cross-brace
4 Push handle 12 Caster wheel
5 Back tube 13 Caster fork
6 Rear frame 14 Foot plate
7 Front frame 15 Knee lever wheel lock
8 Rear wheel adapter
2
Avantgarde CV
Maximum load (in combination with double cross-brace): 140 kg
Thanks to its frame geometry, the Avantgarde CV offers precise leg guidance with the possibility of swinging away
and removing the foot rests. When the foot rests are removed, the upright frame front section allows the wheelchair
to be manoeuvred close to objects.
1 Seat/seat pad 9 Rear wheel with push ring
2 Side panel 10 Quick-release axle release button
3 Back/back upholstery 11 Double cross-brace
4 Push handle 12 Caster wheel
5 Back tube 13 Caster fork
6 Rear frame 14 Foot plate (foot rest removable)
6
Introduction
Avantgarde CV / CS / CLT

7 Front frame 15 Knee lever wheel lock
8 Rear wheel adapter
3
Avantgarde CLT
Maximum load (in combination with double cross-brace): 100 kg
The Avantgarde CLT is the weight-optimised sports version for particularly active users. In the version CLT "wel
ded", subsequent modification of the wheel position and back height was sacrificed in favour of saving additional
weight.
1 Seat/seat pad 9 Rear wheel with push ring
2 Side panel 10 Quick-release axle release button
3 Back/back upholstery 11 Double cross-brace
4 Back tube 12 Caster wheel
5 Push handle 13 Caster fork
6 Rear frame 14 Foot rest
7 Front frame 15 Knee lever wheel lock
8 Rear wheel attachment device (here welded)
7Avantgarde CV / CS / CLT
Introduction

2 Safety
2.1 Explanation of warning symbols
WARNING Warning regarding possible serious risks of accident or injury.
CAUTION Warning regarding possible risks of accident or injury.
NOTICE Warning regarding possible technical damage.
2.2 General safety instructions
CAUTION
Failure to observe installation instructions
Pinching, crushing due to installation errors
►Do not reach between force-actuated surfaces during installation work (e.g. when tightening screw connec
tions).
CAUTION
Use of unsuitable tools
Pinching, crushing or damaging the product due to use of unsuitable tools
►When completing the tasks, only use tools that are suitable for the conditions at the place of work and for
which safety and the protection of health are assured with proper use.
►Observe the specifications in the section "Required Tools".
CAUTION
Re-use of self-locking nuts
Tipping over, falling of the user due to unintended loosening of the screw connections
►Always replace self-locking nuts with new self-locking nuts after disassembly.
NOTICE
Tipping or falling of the product
Damage to product due to lack of attachment
►When you work on the product, secure it so that it cannot tip over or fall over.
►Use a clamping fixture to secure the product whenever you work on it at a workbench.
3 Service Work
3.1 General Information
INFORMATION
Read the service manual before starting work. Familiarise yourself with the functions of the product prior to
inspection and use. In order to do so, you can request this service manual and other documentation from the
manufacturer (see the overview of national Ottobock branches on the inside of the back cover).
INFORMATION
Clean and disinfect the product before commencing service work.
Observe all product care and product-specific inspection instructions in the instructions for use.
INFORMATION
Many screw connections utilise screws and nuts equipped with a thread lock. If you loosen screw connections,
be sure to replace the respective nut or screw with one equipped with a new thread lock. If new screws or nuts
with thread lock are not available, use a medium strength liquid thread locking compound (e.g.Loctite® 241 or
Euro Lock A24.20).
8
Safety
Avantgarde CV / CS / CLT

3.2 Instructions for adjustment
WARNING
Lack of stability against tipping
User may fall or tip over due to lack of inspection
►Changing the settings can lead to instability of the system as a whole. Verify tipping resistance after any
changes to the settings.
The sections that follow describe the replacement and retrofitting of standard and option parts on the product
shown on the cover.
All instructions concerning the adjustment of the installed parts are included in the instructions for use (qualified
personnel) – see the section "Foreword" for the order number.
3.3 Maintenance Schedule
Maintenance schedule as a template for copying: see Page60.
3.4 Required Tools
The following tools are required in order to perform the service work:
• Reversible ratchet handle wrench and sockets (size: 8–24)
• Torque wrench (measurement range 5-50 Nm)
• Wrench (size: 8–24), contained in the 481C08=ST010 Tool Set
• Allen wrench (size: 2.5–6), size 3 – 6 contained in the 481C08=ST010 Tool Set
• Screwdriver (blade width: 2.5 mm, 3.5 mm, 5 mm)
• Phillips head screwdriver (size: 2)
• Hammer (approx. 300 g); soft-faced hammer
• Pliers: cutting pliers, combination pliers, snap ring pliers
• Pin punches ø3mm, 4mm, 5mm, 6mm
• Drill/twist drill ø 2.5mm, 3.2mm, 5mm, 5.2mm, 6mm
• Stanley knife with sickle hooked blade and standard blade
• Tyre mounting levers and inner tube repair kit
• Workbench and vice with plastic jaws and rubber insert
• Measurement equipment: yardstick, spirit level, back square
• Liquid thread lock, "medium" and "strong"
3.5 Special features of the Avantgarde CLT
Lightweight construction was strictly applied in the design of the Avantgarde CLT ultra-light active wheelchair. This
necessitates the greatest possible care during adjustment.
In particular the tightening torques for the bolts of high-strength aluminium alloy must be strictly observed (see
table).
Bolt diameter (mm) Maximum torque for aluminium bolts (Nm)
6 5.5
8 13
Before the first assembly or re-use of the aluminium bolts, inspect the threads for damage. We recommend that
new aluminium bolts are used at each (re-)assembly.
Use a liquid bolt locking compound on the aluminium bolts (e.g., Loctite 241®).
3.6 Assembly A: Frame
3.6.1 Replacement Work on the Frame
3.6.1.1 Replacing the Front Frame Part
1) Remove the rear wheels and flip up the footplates.
2) Remove the side panels (see Page30).
3) Slightly fold the wheelchair.
4) Unscrew and remove the caster wheel assembly from the lower frame tube (see fig.4).
→The lower frame tube is detached from the rear part of the frame.
5) Lay the wheelchair on its back and unscrew the upper frame tube (see fig.5).
9Avantgarde CV / CS / CLT
Service Work

6) Remove the front part of the frame upward (see fig.6).
7) Remove all parts (knee lever brake, supports) installed on the frame.
8) To reassemble, perform these steps in reverse order. Tighten the frame tubes with 23Nm.
4 5
6
3.6.1.2 Replacing the Rear Frame Part
1) Remove the rear wheels and flip up the footplates.
2) Remove the side panels (see Page30).
3) Unscrew the rear wheel adapter and remove (see Page38).
4) Slightly fold the wheelchair.
5) Remove the seat pad (see fig.8)
6) Open the back upholstery hook-and-loop fasteners and remove the back upholstery (see fig.9).
7) Remove the rear part of the frame rearward (see fig.10).
8) Remove all parts (back tubes, supports) installed on the frame.
9) To reassemble, perform these steps in reverse order. Tighten the frame tubes with 23Nm.
7 8
10
Service Work
Avantgarde CV / CS / CLT

9 10
3.6.1.3 Replacing the Cross-Brace/Cross-Brace Bracket
INFORMATION
►The frame components are no longer properly connected when the crossbrace is removed. Carefully lay the
frame components on the work surface after removing the crossbrace.
1) Remove both front parts of the frame (see Page9).
2) Unscrew the crossbrace centre screw and remove (see fig.11).
3) Remove the crossbrace bracket retaining clip (see fig.12).
4) Remove the end caps (see fig.13).
5) Remove the crossbrace upward (see fig.14) and replace.
6) To reassemble, perform these steps in reverse order. Tighten the centre screw to the point that folding without
jamming is possible.
11 12
13 14
3.6.1.4 Replacing the Joint Tubes
1) Remove the front part of the frame (see Page9).
2) Unscrew the rear wheel adapter and remove (see Page9).
11Avantgarde CV / CS / CLT
Service Work

3) Remove the crossbrace (see Page11).
4) Remove/replace the joint tubes (see fig.15).
5) To reassemble, perform these steps in reverse order. Tighten the frame tubes with 23Nm.
15
3.6.1.5 Replacing the Seat Tube Supports
1) Slightly fold the wheelchair (see fig.16).
2) Unscrew the seat tube supports Allen head screws, wrench size 3 (the support with side panel attachment
device as well if necessary) (see fig.17).
3) Remove/replace the supports.
4) To reassemble, perform these steps in reverse order. Tighten the Allen head screws to 4Nm.
16 17
3.6.2 Retrofitting the Vertical Accessory Mount
INFORMATION
The vertical accessory mount and the frame accessories cannot be installed on the welded Avantgarde CLT.
The vertical accessory mount is required for the installation of the anti-tipper and the transport wheels (see fig.18,
item 1).
The vertical accessory mount can be installed in two positions.
1) Remove the rear reflector from the rear frame (see fig.19).
2) Hold the vertical accessory mount against the inside of the frame tube with the rounded side towards the frame
tube (see fig.20).
3) Bolt on the accessory mount:
→Insert a screw with washer from the outside through the frame tube (see fig.21, item 1).
→Thread a nut from above into the profile of the vertical accessory mount (see fig.21, item 2).
→Hold the nut (see fig.21, item 3) and tighten the screw from the outside to 7Nm.
12
Service Work
Avantgarde CV / CS / CLT

18 19
20 21
3.6.3 Installing and adjusting the anti-tipper
WARNING
Incorrect installation of the anti-tipper/missing anti-tipper
Tipping over, falling of the user due to failure to observe the installation instructions and because of incorrect
adjustment
►Depending upon the settings of the chassis, the centre of gravity, the back angle and the experience of the
user, the use of an anti-tipper may be necessary.
►For a small wheelbase and a backrest that is tilted far back, an anti-tipper may need to be installed on both
sides, depending upon the user's experience.
►Verify that the anti-tipper has been installed and adjusted properly. Find the appropriate position with the
assistance of a helper.
CAUTION
Anti-tipper not intended
Tipping over of the user due to missing safety devices
►On the Avantgarde CLT with fixed welded fitting, installation of an anti-tipper is not intended.
►Therefore examine the user intensively for suitability (adequate physiological capabilities) before supplying the
user with this version. This wheelchair version is intended only for experienced users with sporting ambitions
who, thanks to their physiological capabilities, are able to handle the wheelchair proficiently.
3.6.3.1 Installing the anti-tipper
INFORMATION
Note that, for a seat inclination ≥ 3 cm, the 481A64=SV172 conversion set must also be installed with the combin
ation of the anti-tipper, right, and the crutch holder, right. This conversion is necessary to stop the anti-tipper from
striking against the frame when deactivated.
The anti-tipper can be installed at 5 positions on the vertical accessory mount (see fig.22, item1).
1) Push the anti-tipper tube from below into the vertical accessory mount.
13Avantgarde CV / CS / CLT
Service Work

2) Tighten the anti-tipper tube in the vertical accessory mount with the Allen head screw to 7 Nm (see fig.22,
item2).
3) Adjusting the anti-tipper (see Page14).
22
3.6.3.2 Replacing the Pivot Arm
1) Loosen and remove the Allen head screw below the pivot arm through the maintenance opening (see fig.23).
2) Take hold of the clamping piece inside the tube and remove it (not illustrated).
3) Remove the pivot arm mounting screw from the anti-tipper tube (see fig.24).
4) Remove and replace the pivot arm.
5) Adjust the angle of the pivot arm if needed (see Page14).
6) Tighten the pivot arm screw connections (see fig.24).
7) Hold the clamping piece in the tube (not illustrated). Insert the Allen head screw below the pivot arm and screw
on the clamping piece. (see fig.23).
23 24
3.6.3.3 Replacing Anti-Tipper Rollers
The replacement is made without tools by pulling out the plug-in tube.
3.6.3.4 Adjusting the Anti-Tipper
INFORMATION
In order to adjust the anti-tipper correctly, it may be necessary to combine the steps to adjust the height and
length.
Adjusting the height of the pivot arm
1) Unscrew the Allen head screw on the accessory mount (see fig.22, item1).
2) Adjust the height of the pivot arm (see fig.22, item2).
→The distance between the anti-tipper rollers and the ground must be max. 50mm (2inch) (see fig.25).
3) Tighten the Allen head screw to 7Nm.
14
Service Work
Avantgarde CV / CS / CLT

Adjusting the angle of the pivot arm
1) Loosen and remove the Allen head screw below the pivot arm (see fig.26, item1). Take hold of the clamping
piece inside the tube and remove it (see fig.26, item2).
2) Remove the pivot arm mounting screw from the anti-tipper tube (see fig.26, item3).
3) Move the pivot arm to a new position (3 setting possibilities: see fig.26, item4).
→The distance between the anti-tipper rollers and the ground must be max. 50mm (2inch) (see fig.25).
4) Bolt down the pivot arm.
5) Hold the clamping piece in the tube (see fig.26, item2). Insert the Allen head screw below the pivot arm and
screw on the clamping piece (see fig.26, item1).
Adjusting the length of the pivot arm
1) Press in the pushbutton on the pivot arm (see fig.27).
2) Adjust the length of the pivot arm.
→As a minimum, the anti-tipper rollers must project fully beyond the largest diameter of the rear wheel (see
fig.28).
3) Allow the pushbutton on the pivot arm to engage.
ax. 5 c
25 26
27 28
3.6.4 Retrofitting the transport wheels
CAUTION
Incorrect adjustment of the transport wheels
User tipping over or falling due to installation errors
►Align the transport wheels to the rear while installing.
►Verify that the transport wheels have been set to the same height before using them.
1) Press the transport wheel locking pin in (see fig.29).
2) Insert the transport wheel true to side into the vertical accessory mount.
3) Adjust the height of the transport wheels (see fig.30). Adjust the height so that the transport wheels are
approx. 20mm above the ground when the rear wheel is installed.
15Avantgarde CV / CS / CLT
Service Work

29
2 cm
30
3.6.5 Retrofitting the Horizontal Accessory Mount
The horizontal accessory mount is required for the installation of the tip-assist and the crutch holder (see fig.31).
►Screw the mounting screws (above/inside) into the holes on the frame to 8Nm (see fig.32).
31 32
3.6.6 Retrofitting the Tip-Assist
1) Unscrew the mounting screw on the accessory mount clamp (see fig.33).
2) Insert the tip-assist true to side (see fig.34).
3) Tighten the clamp's mounting screw to 8Nm.
33 34
3.6.7 Retrofitting the Crutch Holder
►Set the crutch holder onto the tip-assist and screw it in place.
16
Service Work
Avantgarde CV / CS / CLT

35 36
3.6.8 Retrofitting the Frame Pads (CS/CLT only)
1) Position the frame pad on the front frame (see fig.37).
2) Close the frame pad hook-and-loop fastener (see fig.38).
37 38
3.7 Assembly B: Footrest
3.7.1 Adjusting the Foot Rests/Tube Foot Rest/Foot Plates
All instructions concerning the adjustment of the foot rests are included in the Instructions for Use (qualified per
sonnel) – order number 647G585.
3.7.2 Replacement Work on the CV Model
3.7.2.1 Replacing the Foot Rest
1) Open the calf strap or pull it off the retaining lug on the swivel segment.
2) Push the swivel handle of the foot rest to the rear.
3) Swing the foot rest outwards and to the side by 90° (see fig.39).
4) Remove the foot rest upward and replace (see fig.40).
5) To reassemble, perform these steps in reverse order.
17Avantgarde CV / CS / CLT
Service Work

39 40
3.7.2.2 Replacing the Foot Rest Bar/Swivel Segment
1) Remove the footrest.
2) Unscrew/remove the set screws on the swivel segment (see fig.41, see fig.42).
3) Remove the foot rest bar from the swivel segment (see fig.43). Replace the foot rest bar/swivel segment if
necessary.
4) Slide the foot rest bar at least 40mm into the swivel segment.
INFORMATION: A mark on the foot rest bar indicates the minimum distance the foot rest bar must be
inserted during installation..
5) Tighten the set screws to 8Nm.
41 42
43
3.7.2.3 Replacing the Foot Plate
1) Remove the foot rest.
2) Unscrew the size 4 Allen head screws on the angle adjustment (see fig.44).
3) Replace the foot plate.
4) To reassemble, perform these steps in reverse order. Tighten the Allen head screw to 10Nm.
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Service Work
Avantgarde CV / CS / CLT

44
3.7.2.4 Replacing the Pivot Bearing
1) Remove the foot rest.
2) Unscrew the size 4 Allen head screw at the centre of the pivot bearing (see fig.45).
3) Remove/replace the pivot bearing.
4) To reassemble, perform these steps in reverse order. Tighten the Allen head screw to 5Nm.
45 46
3.7.2.5 Replacing the Locking Device
1) Remove the foot rest.
2) Unscrew the size 4 Allen head screw on the locking device (see fig.46).
3) Remove/replace the locking device.
4) To reassemble, perform these steps in reverse order. Tighten the Allen head screw to 5Nm.
3.7.2.6 Retrofitting the Heel Strap
1) Remove the foot rest.
2) Unscrew the Phillips head screw on the heel strap holder (see fig.47).
3) Remove/replace the heel strap holder and the heel strap.
4) To reassemble, perform these steps in reverse order.
19Avantgarde CV / CS / CLT
Service Work

47
3.7.2.7 Elevating Foot Rest with Automatic Length Adjustment
3.7.2.7.1 Retrofitting the Elevating Foot Rest
1) Remove the foot rest.
2) Tighten the retaining bolt with shell and size 4 Allen head screw on the frame (see fig.48).
3) Insert the elevating foot rest with automatic length adjustment into the frame. In doing so, keep the foot rest
swung outward by 90° (see fig.49).
4) Swing the elevating foot rest inward and press down.
48 49
3.7.2.7.2 Replacing the Foot Rest Bar
1) Remove the Allen head screw from the foot rest bar (see fig.50).
2) Select one of the 3 threaded bores.
INFORMATION Depending on the setting it may be necessary to add or remove one or more spacer sleeves.
3) Insert the Allen head screw.
4) Tighten the Allen head screw to 8Nm.
50
20
Service Work
Avantgarde CV / CS / CLT