Otto Bock Discovery tmax User manual

Service Manual ...................................................................................................... 3
discovery tmax

2 | Ottobock discovery tmax

Introduction1 5.........................................................................................................................................................
Foreword 1.1 5............................................................................................................................................
Support1.2 5...............................................................................................................................................
Product Overview1.3 6.................................................................................................................................
Safety2 7....................................................................................................................................................................
Explanation of Warning Symbols2.1 7.............................................................................................................
General Safety Instructions2.2 8....................................................................................................................
Service Work3 8.......................................................................................................................................................
General Information3.1 8..............................................................................................................................
Instructions for Adjustment3.2 8.....................................................................................................................
Maintenance Schedule3.3 8..........................................................................................................................
Required Tools and Accessories3.4 8.............................................................................................................
Assembly A: Frame3.5 9...............................................................................................................................
Replacing the Adjustment Tubes3.5.1 9.............................................................................................................
Replacing the Adjustment Tubes on the Main Frame3.5.1.1 9.................................................................................
Replacing the Adjustment Tubes on the Seat Frame3.5.1.2 10................................................................................
Replacing the Push Bar Adjustment Tubes3.5.1.3 11.............................................................................................
Replacing the Anti-Tipper3.5.2 11.....................................................................................................................
Retrofitting the Lashing Points3.5.3 12..............................................................................................................
Replacing the Back Plates3.5.4 12...................................................................................................................
Assembly B: Footrest3.6 13..........................................................................................................................
Adjusting the Foot Rests/Tube Foot Rest/Foot Plates3.6.1 13..............................................................................
Replacing the Footrest Adapter3.6.2 13............................................................................................................
Replacing the Footrest3.6.3 13.........................................................................................................................
Replacing the Foot Rest Bar/Swivel Segment3.6.4 14.........................................................................................
Replacing the Pivot Bearing3.6.5 14.................................................................................................................
Replacing the Locking Device3.6.6 15..............................................................................................................
Replacing the Footplate3.6.7 15.......................................................................................................................
Replacing the Heel Band3.6.8 16.....................................................................................................................
Assembly C: Seat/Seating System3.7 16........................................................................................................
Replacing the Locking Plate3.7.1 16.................................................................................................................
Replacing the Locking Unit3.7.2 17..................................................................................................................
Replacing the Locking Plate Guide3.7.3 18.......................................................................................................
Replacing/Retrofitting the Seat Plate3.7.4 19.....................................................................................................
Replacing/Retrofitting the Seat Plate Supports3.7.5 19.......................................................................................
Replacing the Locking Pedal3.7.6 19................................................................................................................
Assembly D: Back/Push Handle3.8 21...........................................................................................................
Replacing the Push Handles3.8.1 21................................................................................................................
Replacing/Retrofitting the Push Bar3.8.2 21.......................................................................................................
Replacing the Back Plates3.8.3 21...................................................................................................................
Assembly E: Side Panels3.9 21.....................................................................................................................
Replacing/Retrofitting the Side Plates3.9.1 21....................................................................................................
Replacing the Armrest Pads3.9.2 22.................................................................................................................
Assembly F: Caster Wheels3.10 22.................................................................................................................
Replacing the Caster Wheels3.10.1 22...............................................................................................................
Replacing the Caster Fork3.10.2 23...................................................................................................................
Assembly G: Rear Wheels3.11 23...................................................................................................................
Replacing the Rear Wheels3.11.1 23..................................................................................................................
Replacing the Wheel Attachments for Wheels with Quick-Release Axle3.11.2 24.....................................................
Replacing the Rear Wheel Adapters3.11.3 25......................................................................................................
Assembly H: Wheel Lock/Brake3.12 27............................................................................................................
Adjusting the Wheel Lock3.12.1 27....................................................................................................................
Table of contents
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Table of contents

Replacing the Knee Lever Wheel Lock for 12"/16" Wheels3.12.2 27......................................................................
Replacing the Knee Lever Wheel Lock for 22"/24" Wheels3.12.3 28......................................................................
Appendices4 29........................................................................................................................................................
Technical Data4.1 29....................................................................................................................................
Maintenance Schedule4.2 30........................................................................................................................
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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 sched
ules and provide the customer with a copy.
Instructions for Use (Qualified Personnel) Instructions for Use (User)
discovery tmax 647G734=* 647G733=*
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.
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Introduction

1.3 Product Overview
1
discoverytmax - Version with 12" wheels
1 Main frame 8 Caster wheel
2 Seat frame 9 Footrest
3 Pivot point for angle adjustment 10 Footplate
4 Hole channel for angle adjustments (2.5° increments) 11 Side panel with armrest
5 Locking pedal 12 Back frame
6 Rear wheel 13 Push handle
7 Knee lever wheel lock 14 Lashing point (option)
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Introduction
discovery tmax

2
discoverytmax with 22" wheels
1 Main frame 8 Caster wheel
2 Seat frame 9 Footrest
3 Pivot point for angle adjustment 10 Footplate
4 Hole channel for angle adjustments (2.5° increments) 11 Side panel with armrest
5 Locking pedal 12 Back frame
6 Rear wheel 13 Push handle
7 Knee lever wheel lock 14 Lashing point (option)
2 Safety
2.1 Explanation of Warning Symbols
WARNING Warnings regarding possible risks of severe accident or injury.
CAUTION Warnings regarding possible risks of accident or injury.
NOTICE Warnings regarding possible technical damage.
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Safety

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.
CAUTION
Use of unsuitable tools
Pinching, crushing or damaging the product
►When working, use only tools that are suitable for the conditions at the workplace and whose proper use
ensures safety and health protection.
NOTICE
Tipping or falling of the product
Damage to the product
►When you work on the product, secure it so that it cannot tip over or fall over.
►Use a clamping device to secure the product for all work at a workbench.
NOTICE
Re-use of self-locking nuts
Unintended loosening of the screw connections
►Always replace self-locking nuts with new self-locking nuts after disassembly.
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) or download from
our homepage www.ottobock.de or www.ottobock.com.
INFORMATION
Clean and disinfect the product before commencing service work.
Observe all care instructions and product-specific inspection instructions in the instructions for use.
INFORMATION
Many screw connections utilise screws and nuts equipped with 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, apply a medium-strength liquid thread locking compound (such as Loctite® 241 or
Euro Lock A24.20) to the existing screws.
3.2 Instructions for Adjustment
The following chapter describes the replacement and retrofitting of standard and option parts on the product
shown on the cover.
All instructions concerning the adjustment of the parts installed are included in the Instructions for Use (Qualified
Personnel) – see the chapter "Foreword" for the order number.
3.3 Maintenance Schedule
Maintenance schedule as a template for copying: see Page30.
3.4 Required Tools and Accessories
The following tools are required in order to perform the service work:
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• Reversible ratchet handle wrench and sockets (size: 8–24)
• Torque wrench (measurement range 5-50 Nm)
• Wrench (size: 8–24)*
• Allen wrench (size: 2.5–6)**
• Screwdriver (blade width: 2.5/3.5/5 mm)
• Phillips head screwdriver (size: 2)
• Hammer (approx. 300 g); plastic hammer
• Pliers: cutting pliers, combination pliers, snap ring pliers
• Rivet gun (for rivets up to ø 5mm)
• Pin punch, ø 3/4/5/6 mm
• Drill/twist drill ø 3.2/5/5.2/6 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: rule, spirit level
• Liquid thread locker, "medium" and "strong"
* Included in the 481C08=ST010 Tool Set
** Size 3–6 included in the 481C08=ST010 Tool Set
3.5 Assembly A: Frame
3.5.1 Replacing the Adjustment Tubes
The adjustment tubes must be replaced in the course of retrofitting seat widths that cannot be achieved with the
installed adjustment tubes.
To simplify replacement, the main frame and seat frame adjustment tubes should be replaced at the same time.
This saves removing the seat frame from the main frame.
If the frame width is altered, the width of the push bar also has to be changed (see Page11).
Existing seat plates must be removed in advance.
3.5.1.1 Replacing the Adjustment Tubes on the Main Frame
Article Number Adjustment Tube (for front/rear)* Quantity
471C22=SS021 Adjustment Tube for seat width 12"–16" / 30–40 cm 2
471C22=SS022 Adjustment Tube for seat width 14"–18" / 35–45 cm 2
471C22=SS023 Adjustment Tube for seat width 16"–20" / 40–50 cm 2
471C22=SS024 Adjustment Tube for seat width 18"–22" / 45–55 cm 2
* Seat width between the armrests, measured between the lateral guides of the armrest (lateral guides without optional seat
plates)
1) Loosen 4 x Allen head screws on each of the adjustment tubes at the rear (see Fig.3, item1) and front (see
Fig.4, item2).
INFORMATION: In some cases, the Allen head screws on the locking pedal also have to be loosened
(see Fig.3, item3).
2) Push the adjustment tubes to the side and replace them one by one.
3) Symmetrically preinstall the adjustment tubes in the desired width.
INFORMATION: The connection between the adjustment tube and frame always has to be realised on
both sides with 2 Allen head screws + washers (use inner 2 bores).
INFORMATION: If required, an asymmetry of 12.5 mm (1/2") is allowable when adapting the adjust
ment tubes. The asymmetry must be on the same side on all adjustment tubes. However, the allow
able adjustment range must not be exceeded.
4) Retighten all Allen head screws to a torque of 10 Nm.
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3 4
3.5.1.2 Replacing the Adjustment Tubes on the Seat Frame
INFORMATION
If a push bar is installed, it needs to be replaced at the same time (see the next chapter).
Article Number Adjustment Tube (for front/rear)* Quantity
471C22=SS021 for seat width 12"–16" / 30–40 cm 2
471C22=SS022 for seat width 14"–18" / 35–45 cm 2
471C22=SS023 for seat width 16"–20" / 40–50 cm 2
471C22=SS024 for seat width 18"–22" / 45–55 cm 2
Article Number Adjustment Tube (for seat fork/locking mechanism)* Quantity
471D22=SS022 for seat width 12"–16" / 30–40 cm 2
471D22=SS023 for seat width 14"–18" / 35–45 cm 2
471D22=SS024 for seat width 16"–20" / 40–50 cm 2
471D22=SS025 for seat width 18"–22" / 45–55 cm 2
* Seat width between the armrests, measured between the lateral guides of the armrest (lateral guides without optional seat
plates)
1) Loosen 4 x Allen head screws on each of the adjustment tubes at the front (see Fig.5, item1) and rear (see
Fig.5, item2).
2) Loosen 2 x Allen head screws with counter nuts on the adjustment tube of the central seat fork (see Fig.5,
item3).
3) Loosen 2 x Allen head screws with counter nuts on the adjustment tube of the locking mechanism (see Fig.5,
item4).
4) Push the adjustment tubes to the side and replace them one by one.
5) Symmetrically preinstall the adjustment tubes one by one in the desired width.
INFORMATION: The connection between the adjustment tube and frame always has to be realised on
both sides with 2 Allen head screws + washers (use inner 2 bores).
INFORMATION: If required, an asymmetry of 12.5 mm (1/2") is allowable when adapting the adjust
ment tubes. The asymmetry must be on the same side on all adjustment tubes. However, the allow
able adjustment range must not be exceeded.
6) Tighten all Allen head screws to the following torque values:
→Item1/2: 10 Nm
→Item3/4: Allen head screw – 8 Nm; counter nut – 10 Nm
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5 6
3.5.1.3 Replacing the Push Bar Adjustment Tubes
Article Number Adjustment Tube (for push bar)* Quantity
471D22=SS022 for seat width 12"–16" / 30–40 cm 1
471D22=SS023 for seat width 14"–18" / 35–45 cm 1
471D22=SS024 for seat width 16"–20" / 40–50 cm 1
471D22=SS025 for seat width 18"–22" / 45–55 cm 1
* Seat width between the armrests, measured between the lateral guides of the armrest (lateral guides without optional seat
plates)
1) With push bar option: loosen 2 x Allen head screws on the adjustment tube (see Fig.6).
2) Slide the adjustment tube to the side and replace it.
3) Symmetrically preinstall the adjustment tube in the desired width.
4) Tighten the Allen head screws to a torque of 8 Nm.
3.5.2 Replacing the Anti-Tipper
CAUTION
Incorrect fitting of anti-tipper / missing anti-tipper
Risk of tipping of the user to the rear
►Check correct installation and adjustment of the anti-tipper:
►Depending on the adjustment of the chassis, the wheelchair centre of gravity and the experience of the user,
an anti-tipper may be necessary.
1) Press in the tripod spring (see Fig.7) and pull the anti-tipper (see Fig.8, item1) out of the cross tube (see
Fig.8, item2).
2) Insert the new anti-tipper. In order to do so, push in the tripod spring and allow the front pin to engage in a
bore hole on the cross tube.
3) Visually check that the anti-tipper has engaged.
4) For adjustment, see the Instructions for Use (Qualified Personnel), reference number 647G734.
7 8
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3.5.3 Retrofitting the Lashing Points
WARNING
Prohibited installation of parts after an accident
Serious injuries due to unidentifiable product defects
►Continuing to use the product after a traffic accident is prohibited.
1) Screw the front lashing points onto the seat frame using the 2 supplied Allen head screws, but do not tighten
the screws (see Fig.9, item1).
INFORMATION: The front lashing points must face to the outside.
2) Screw on the rear lashing points using the back plate mounting screws (see Fig.10, item1). Also mount a pin
between the rear mounting screws, respectively (see Fig.10, item2; see Fig.11, item3).
INFORMATION: The rear lashing points must face to the inside.
3) Tighten all Allen head screws/mounting screws to a torque of 10 Nm.
4) Attach the "Anchor Point/Fixing Point" sticker to the lashing points so it is readily visible from the outside (no
illustration).
9 10
3.5.4 Replacing the Back Plates
INFORMATION
To adjust the back angle, see the Instructions for Use (Qualified Personnel), reference number 647G734.
1) Loosen 2 x Allen head screws on the back plate/seat frame connection (see Fig.11, item1). The rear cross
tube on the seat frame does not have to be removed (see Fig.12, item1).
2) If a lashing point is installed, also loosen 1 x Allen head screw and 1 x pin (see Fig.11, item2).
3) Loosen 3 x Allen head screws on the back plate/push handle connection (see Fig.11, item3, 1 x Allen head
screw not illustrated).
4) Remove and replace the back plate.
INFORMATION:If required, the back plate depth position can be adjusted after loosening the 2nd back
plate (see Fig.12, item2).
5) Reinstall the back plate. Screw the rear cross tube into place at the same time (see Fig.12, item1).
6) Tighten all Allen head screws to 10 Nm.
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11 12
3.6 Assembly B: Footrest
3.6.1 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.
3.6.2 Replacing the Footrest Adapter
1) Loosen the Allen head screws on the seat frame (see Fig.13, item1).
2) Remove the lashing point if applicable.
3) Remove and replace the footrest adapter.
4) Bring the footrest adapter to the desired position (see Fig.13, item2).
INFORMATION: Note the minimum insertion depth. The footrest adapter needs to be secured with 2
screws.
5) Tighten all Allen head screws to a torque of 10 Nm.
13
3.6.3 Replacing the Footrest
1) If necessary: open the calf band and disengage it from the holder. Flip the footplate up.
2) Release the footrest locking mechanism (see Fig.14) and swing the foot rest 90° to the outside (see Fig.15).
3) Pull the footrest up, remove and replace it.
4) Slide the footrest into the holder on the front frame tube from above (see Fig.16). The footrest has to face out
by 90°.
5) Swing the footrest in until the locking mechanism engages.
6) Fold down the footplate. If necessary: engage the calf band on the holder (see Fig.17, item1) and adjust the
length of the calf band. In order to do so, open/adjust/close the hook-and-loop closure (see Fig.17, item2).
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14 15
16 17
3.6.4 Replacing the Foot Rest Bar/Swivel Segment
1) Remove the footrest.
2) Replace the footrest bar:
→Loosen the bottom Allen head screw size4 on the swivel segment (see Fig.18, item1).
→Remove the footrest bar from the swivel segment. Replace if required.
3) Replace the swivel segment:
→Loosen the bottom Allen head screw size4 on the swivel segment (see Fig.18, item1).
→Also loosen and remove the upper Allen head screw size4 on the swivel segment (see Fig.18, item2).
→Slide off the swivel segment. Replace if required.
4) Insert the footrest bar at least 40mm into the swivel segment (see Fig.19; similar illustration).
5) Tighten the Allen head screws on the footrest bar to 10Nm.
18 19
3.6.5 Replacing the Pivot Bearing
1) Remove the footrest.
2) Loosen the size5 Allen head screw at the centre of the pivot bearing (see Fig.20).
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3) Remove/replace the pivot bearing.
4) Reinstall the pivot bearing. Tighten the Allen head screw to 5Nm.
20 21
3.6.6 Replacing the Locking Device
1) Remove the footrest.
2) Loosen the size5 Allen head screw on the locking device (see Fig.21).
3) Remove/replace the locking device.
4) Reinstall the locking device. Tighten the Allen head screw to 10Nm.
3.6.7 Replacing the Footplate
Standard footrest
1) Loosen the size5 Allen head screw on the footrest bar (see Fig.22, item1).
2) Slide the footplate off the footrest bar and replace it.
3) Tighten the Allen head screw to a torque of 8 Nm.
22
Aluminium footplate
1) Loosen the size5 Allen head screw on the lower footrest bar (see Fig.23).
2) Slide off and replace the footplate (see Fig.24).
3) Tighten the Allen head screw to a torque of 10Nm.
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23 24
3.6.8 Replacing the Heel Band
1) Remove the footrest.
2) Remove the footrest bar with footplate if required.
3) Unscrew the Phillips head screw on the heel band holder (see Fig.25).
4) Remove/replace the heel band holder and the heel band.
5) Reinstall the heel band.
25 26
3.7 Assembly C: Seat/Seating System
3.7.1 Replacing the Locking Plate
1) Preparing for installation:
→Set the seat angle to 30° or higher.
→If required, loosen the wheel lock and slide it to the side.
2) Loosen 3 x Allen head screws (see Fig.27, item1).
3) Thread the locking plate between the locking pin (see Fig.27, item2) and locking plate guide (see Fig.27,
item3) and remove it.
INFORMATION: If necessary, you have to disengage the locking pin from the locking plate so you can
remove the locking plate.
4) Remove the attached pinch protector from the locking plate (see Fig.27, item4).
5) Replace the locking plate.
6) Attach the pinch protector to the locking plate with 1 x cap screw + washer (see Fig.27, item5). Tighten the
cap screw to a torque of 8 Nm.
7) Thread the new locking plate between the locking pin and locking plate guide. The angle marking faces out.
8) Mount the locking plate on the seat adapter with 3 x Allen head screws + washers (see Fig.27, item1). Tighten
the Allen head screws to 10 Nm.
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27
3.7.2 Replacing the Locking Unit
INFORMATION
The manufacturer recommends replacing the locking unit as a pair on both sides.
1) Remove the locking plate (see Page16).
2) Loosen the locking mechanism linkage (see Fig.28, item1).
3) Loosen 2 x mounting screws + counter nut on the cross tube (see Fig.29, item1) and slide the cross tube to
the side.
4) Loosen 6 x mounting screws on the round side of the locking unit (see Fig.30, item1/2).
5) Put aside the stop plate (see Fig.29, item2; see Fig.30, item3).
6) Remove/replace the locking unit (see Fig.31, item1).
7) Thread the locking unit into the seat frame component (see Fig.31, item2).
8) Insert the hexagon nut in the locking component (see Fig.31, item3).
9) Preinstall the locking unit on the seat frame component with 2 x Allen head screws (short) + washers (see
Fig.30, item1).
10) Put on the stop plate (see Fig.29, item2; see Fig.30, item3).
11) Install the locking unit and the stop plate with 2 x Allen head screws (long) and 2x oval head screws + washers
(see Fig.30, item2).
12) Tighten all mounting screws on the locking unit:
→Allen head screws: 5 Nm
→Oval head screws: 3 Nm
13) Tighten the 2 x mounting screws on the cross tube to 8 Nm (see Fig.29, item1). Tighten the counter nut to
10Nm.
14) Install the locking mechanism linkage on the locking unit (see Fig.28, item1).
15) Reinstall the locking plate (see Page16).
16) For information on adjusting the locking mechanism, see the Instructions for Use (Qualified Personnel), refer
ence number 647G734.
Testing the locking mechanism
CAUTION
Incorrect setting of the locking mechanism linkage
Falling from the seating shell due to malfunction, damage to/destruction of the release mechanism
►Adjust the length of the locking mechanism linkage so that the locking pins fully engage in the locking plate in
the seat frame and the locking mechanism is in the front position. Only then is the support of the seat assured
with extreme settings or when driving over rough surfaces.
►Secure the screw connections of the locking mechanism linkage so it is free of tension, without pulling or
pushing.
Carry out a functional test after assembly is complete. Note the following:
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• The locking pins must fully engage in the locking plate. Reference point: the locking pins protrude slightly from
the locking plate (see Fig.39, item1).
• It must be possible to depress the locking pedal to the stop without a lot of force. The mechanism unlocks
completely in this process. Reference point: the locking pins are recessed 1–2mm in the plastic locking
mechanism housing.
28 29
30 31
3.7.3 Replacing the Locking Plate Guide
1) Remove the blind rivet (see Fig.32, item1).
2) Remove/replace the guide roller and glide piece (see Fig.32, item2/3).
3) Put the guide roller in place. The broader ring of the guide roller (see Fig.32, item4) faces out.
4) Put the glide piece in place (see Fig.32, item3).
5) Rivet both components with the blind rivet.
32
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3.7.4 Replacing/Retrofitting the Seat Plate
1) For replacement: Loosen all mounting screws (countersunk head screws) between the seat plate and seat
plate supports (see Fig.33, item1).
2) For retrofitting: Prior to installation, slightly loosen 2 x Allen head screws on the back plate (see Fig.11,
item1) and turn the cross tube by 90°. Remove the Allen head screws from the cross tube (see Fig.5, item2).
3) After adjusting the frame width, position the seat plate:
→The front of the seat plate is flush with the front of the lateral tubes of the seat frame (see Fig.33, item2).
→The seat plate is centred between the lateral tubes of the seat frame.
→Install additional seat plate supports if required (see next chapter).
4) Connect the seat plate and rear cross tube with 4 countersunk head screws (see Fig.5, item2).
5) Connect the seat plate and front cross tube with 2 countersunk head screws.
6) Tighten all countersunk head screws to a torque of 10 Nm.
7) Tighten the 2 x Allen head screws on the rear back plate to 10 Nm (see Fig.11, item1).
33 34
3.7.5 Replacing/Retrofitting the Seat Plate Supports
1) Remove the seat plate if required (see previous chapter).
2) For replacement: Unscrew the existing seat plate supports and remove them from the frame tube (see
Fig.34).
3) Slide the seat plate supports onto the lateral tubes of the seat frame and bring them together (see Fig.35).
4) Slide the seat plate supports to the desired position (see Fig.36). Ensure that the seat plate supports are dis
tributed as evenly as possible on the lateral tubes, and ensure they line up with the hole channel of the seat
plate.
5) Position and install the seat plate (see previous chapter).
6) Tighten all clamping screws of the seat plate supports to a torque of 10 Nm.
35 36
3.7.6 Replacing the Locking Pedal
1) Only for replacement of the locking mechanism linkage: Loosen the locking mechanism linkage from the
locking unit (see Fig.28, item1).
2) Loosen the locking mechanism linkage from the locking pedal and replace if required (see Fig.37, item1).
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3) Loosen the 2 x Allen head screws on the locking pedal (see Fig.37, item2).
4) Loosen the remaining 4 x Allen head screws on the adjustment tube and slide the adjustment tube off to the
side (see Fig.37, item3).
5) Remove and replace the locking pedal.
6) Slide the locking pedal onto the frame tube.
7) Install the locking pedal and the adjustment tube (see Fig.37, item2/3).
Tighten all 6 Allen head screws to a torque of 10 Nm.
INFORMATION: The connection between the adjustment tube and frame always has to be realised on
both sides with 2 Allen head screws (use inner 2 bores).
8) Connect the locking mechanism linkage to the locking pedal (see Fig.37, item1).
Tighten the oval head screw to a torque of 8 Nm.
9) Only after replacing the locking mechanism linkage: Attach the locking mechanism linkage to the locking
unit (see Fig.28, item1).
Tighten the Allen head screw to a torque of 8 Nm.
10) Prior to final assembly, determine the correct length of the locking mechanism linkage:
→The locking pedal must be in the neutral position (see Fig.38: pedal is up against the stop at the top).
→The locking pins must be fully extended (see Fig.39, item1).
→The locking mechanism must be in the forward position (neutral position).
11) Secure the screw connections of the locking mechanism linkage so it is free of tension (without pushing or
pulling, straight in one plane). Use suitable slotted holes in order to do so.
12) Tighten the Allen head screws to a torque of 8 Nm.
37 38
39
20 | Ottobock
Service Work
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