Invacare Pronto M41 Series Service Manual
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Invacare Pronto M41 Series Service Manual

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Invacare

SERVICE MANUAL

DEALER: Keep this manual.
The procedures in this manual MUST be performed by a qualified technician.
Edition: 1568396A Vers. 002 - 22.01.2015
®
Pronto
TM
with SureStep
M41 Series
®

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Summary of Contents for Invacare Pronto M41 Series

  • Page 1: Service Manual

    Invacare ® Pronto M41 Series with SureStep ® SERVICE MANUAL DEALER: Keep this manual. The procedures in this manual MUST be performed by a qualified technician. Edition: 1568396A Vers. 002 - 22.01.2015...
  • Page 2 All rights reserved. Republication, duplication or modification in whole or in part is prohibited without prior ® ™ written permission from Invacare. Trademarks are identified by . All trademarks are owned by or licensed to Invacare Corporation or its subsidiaries unless otherwise noted.

  • Page 3: Table Of Contents

    ® Invacare - PRONTO M41 SERVICE MANUAL Contents Chapter Page Introduction General information ........................6 Notes on transport ........................6 Definition and representation of information and safety information in this manual ..7 Hazard symbols and symbols used ..................8 Images in this manual .......................
  • Page 4 ® SERVICE MANUAL Invacare - PRONTO M41 8.2.5 Replacing the actuator module ..................46 8.2.6 Replacing the Shark power module ................48 Updating the driving program ....................49 Wheels ............................50 8.4.1 Engaging/Disengaging motor release lever ..............50 8.4.2 Removing/Installing the front/rear casters ..............50 8.4.3...
  • Page 5 ® Invacare - PRONTO M41 SERVICE MANUAL 10 Adjusting the seating position 10.1 Adjusting the lower leg length and seat depth ..............99 10.1.1 Adjusting the lower leg length ..................99 10.1.2 Adjusting the seat depth ....................99 10.1.2.1 Captain's seat ......................99 10.1.2.2...

  • Page 6: Introduction

    ● Alterations to the mobility aid which occur as a result of incorrectly or improperly executed maintenance or overhaul work lead to the exclusion of all liability on the side of INVACARE. ® ● If you have any problems or questions please contact Invacare Service.

  • Page 7: Definition And Representation Of Information And Safety Information In This Manual

    ® Invacare - PRONTO M41 SERVICE MANUAL Definition and representation of information and safety information in this manual Different types of information and signal words are used throughout this manual. DANGER! The signal word "DANGER" refers to immediate hazards. ● The following lines in italics refer to actions which serve to avoid such hazards.

  • Page 8: Hazard Symbols And Symbols Used

    ® SERVICE MANUAL Invacare - PRONTO M41 Hazard symbols and symbols used Different types of hazard symbols and symbols are used throughout this manual. General hazards This symbol warns you of general hazards! ● Always follow the instructions to avoid injury to the user or damage to the product!

  • Page 9: Images In This Manual

    ® Invacare - PRONTO M41 SERVICE MANUAL Images in this manual The detailed images in this manual are given digits to identify various components. Component numbers in text and operational instructions always relate to the image directly above.

  • Page 10: Safety And Fitting Instructions

    ® SERVICE MANUAL Invacare - PRONTO M41 Safety and fitting instructions These safety instructions are intended to prevent accidents at work, and it is imperative that they are observed. WARNING! This section contains important information for the safe operation and use of this product.

  • Page 11: Before Any Inspection Or Repair Work

    ® Invacare - PRONTO M41 SERVICE MANUAL Before any inspection or repair work ● Read and observe this service manual and the associated user manual! ● Observe the minimum requirements for carrying out the work (see chapter entitled „General information)!
  • Page 12 Any changes to the drive program can affect the driving characteristics and the tipping stability of the vehicle! ● Changes to the drive program may only be carried out by trained Invacare® specialist dealers! ● Invacare® supplies all mobility aids with a standard drive program ex-works. Invacare® can...

  • Page 13: Tightening Torques

    ® Invacare - PRONTO M41 SERVICE MANUAL Tightening torques The tightening torques stated in the following list are based on the thread diameter for the nuts and bolts for which no specific values have been determined. All values assume dry and de-greased threads.

  • Page 14: Arrangement Of Sub-Assemblies And Components

    ® SERVICE MANUAL Invacare - PRONTO M41 Arrangement of sub-assemblies and components Overview Under the rear cover/seat: Depending on the seat variant: (1) – Electronic module (2) – Actuator module (optional) The electronic modules that are installed are described in chapter 4.2.

  • Page 15: Overview Of The Electronic Modules (Acs2 System)

    ® Invacare - PRONTO M41 SERVICE MANUAL Overview of the electronic modules (ACS2 system) Various different types of electronic modules can be installed in the wheelchair. Remote Battery cable ACT4 bus ASC bus cable Light cable ACT2 bus Actuator module ACT4...
  • Page 16 ® SERVICE MANUAL Invacare - PRONTO M41 Before you connect components of the wheelchair such as adjustment motors or actuators to the electronic module, make sure you know exactly which electronic module is installed. The following table provides an overview.

  • Page 17: Acs2 Dx2-Pma70 Electronic Module

    ® Invacare - PRONTO M41 SERVICE MANUAL 4.2.1 ACS2 DX2-PMA70 electronic module Connections 1) Battery 24V 2) Bus cable (to remote or ACT) 3) Bus cable (to remote or ACT) 4) Motor M1 5) Light 6) Motor M2 Rubber stoppers for free slots 2) &...

  • Page 18: Shark Mk5Nx Electronics Module

    ® SERVICE MANUAL Invacare - PRONTO M41 4.2.4 Shark MK5NX electronics module Connections 1) Joystick box 2) Left-hand motor 3) Battery 4) Right-hand motor...

  • Page 19: Service Plan

    ® Invacare - PRONTO M41 SERVICE MANUAL Service plan These adjustments should be made whenever this product is serviced, but at least once a year. They should especially be done as part of the initial unit setup. Follow these procedures:...
  • Page 20 ® SERVICE MANUAL Invacare - PRONTO M41  Component Check Remedy Notes • Check fixings, • Tighten screws. Frames welded seams and (chassis) / • Replace battery mounting. battery components if necessary. mounting See chapter 8.5 • Check drive wheels •...
  • Page 21 ® Invacare - PRONTO M41 SERVICE MANUAL  Component Check Remedy Notes • Check contacts and • Clean contacts terminals. and terminals. • Check power cord • Replace if Battery charger for damage. necessary. See chapter 6.1.1 • Remote, status •...

  • Page 22: Operational Faults

    ® SERVICE MANUAL Invacare - PRONTO M41 Operational faults Different power modules can be installed in the mobility device in connection with different remotes. The rectification of operational faults depends on the installed power module in each case. If you have problems with the mobility device, please proceed as follows: •...

  • Page 23: Service Indicator Diagnostics (Shark 2/Mk5 Spj+)

    ® Invacare - PRONTO M41 SERVICE MANUAL 6.1.1 Service Indicator Diagnostics (Shark 2/MK5 SPJ+) Number Diagnostics Error Code Details of Possible of Flashes Code Description Code Error Code Solution User Fault Stall Timeout or Release joystick to user error. neutral and try again.
  • Page 24 ® SERVICE MANUAL Invacare - PRONTO M41 Number Diagnostics Error Code Details of Possible of Flashes Code Description Code Error Code Solution Left Park Left Park Brake Check the left park Brake Fault Drive-Time Test brake connections Failed and cable.
  • Page 25 Replace Bus cable. Low communication mode General General fault Check all Fault connections and wiring. Contact Invacare Technical Service. Incompatible/ Incompatible/ Wrong type of incorrect incorrect Remote remote connected. Remote Ensure the branding of the joystick matches that of...

  • Page 26: Service Indicator Diagnostics (Acs2)

    ® SERVICE MANUAL Invacare - PRONTO M41 6.1.2 Service Indicator Diagnostics (ACS2) BLINK CODE POSSIBLE CAUSE SOLUTION DOCUMENTATION 1 x blink Module defective Replace defective module See chapter 8.2 Accessory error (for Check accessory See chapter 7.6 2 x blink...

  • Page 27: Motor/Gearbox/Brake

    ® Invacare - PRONTO M41 SERVICE MANUAL 6.1.3 Motor/Gearbox/Brake Problem Probable Cause Solutions Documentation Motor makes a Bad bearings. If bearings are bad, replace See chapter 8.6.1. motor. clicking noise. Raised commutator Ohm out motor and replace See chapter 7.1 plate inside of motor.
  • Page 28 7.2. out brushes may be possible). Power module Replace power module or send See chapter 8.2.6. power stage board to Invacare for repair. or relays may be damaged. Power module Stop driving and let electronics Motor runs but senses heavy load cool.

  • Page 29: Battery

    ® Invacare - PRONTO M41 SERVICE MANUAL 6.1.4 Battery Problem Probable Cause Solutions Documentation Batteries won’t Blown battery fuse Check cables for damage or See chapter 8.7.4. or damaged cables. replace battery wiring harness. charge. Batteries sat Replace batteries. See chapter 8.7.3.

  • Page 30: Battery Charger

    Check for AC power with digital outlet. volt meter. Damaged power Check for damage on the power cord. cord, replace if damaged or send to Invacare for repair. Charger LED’s burnt Replace charger. out. Charger may have Remove charger cover and internal fuse that is check for fuses.

  • Page 31: Initial Test Procedures

    Measure the resistance between the two motor contacts. Note A normal reading is between 0.5 and 5 ohms. A reading of 0 ohms or in excess of 15 ohms indicates a problem. High readings are generally caused by bad connections and/or damaged brushes. Contact Invacare.

  • Page 32: Testing The Electro-Mechanical Parking Brake

    ● A reading of 0 ohms or a very high reading (Megaohms or O.L. (out of limit)) indicates a shorted brake or an open connection respectively. If either condition exists, send the motor to Invacare Technical Service for inspection/repair. WARNING! A shorted electro-mechanical brake will damage the brake output section in the power module.

  • Page 33: Rain Test

    ® Invacare - PRONTO M41 SERVICE MANUAL Rain test Check to ensure that the RED and GREY battery terminal caps are secured in place, joystick ● boot is not torn or cracked where water can enter and that all electrical connections are secure at all times.

  • Page 34: Checking Battery Charge Level

    ® SERVICE MANUAL Invacare - PRONTO M41 ● Run the wheelchair in neutral for at least 2 minutes. ● Sit in wheelchair and place your feet against a door jam, workbench, or other stationary object. ● Carefully push the joystick forward, trying to drive the wheelchair through the stationary object.

  • Page 35: Checking An Actuator

    ® Invacare - PRONTO M41 SERVICE MANUAL Checking an actuator ● Switch the electronics OFF on the remote. ● Remove the rear cover, as described in chapter 8.1.3. ● Move the seat into the service position (Modulite seat), as described in chapter 8.9.2.1.

  • Page 36: Repair Work

    ® SERVICE MANUAL Invacare - PRONTO M41 Repair work Covers and frame IMPORTANT! After any adjustments, repair or service and before use, make sure that all attaching hardware is tightened securely - otherwise injury or damage may result. ● Before performing any maintenance, adjustment or service verify that ON/OFF switch on the joystick is in the OFF position.

  • Page 37: Removing/Installing The Front Cover

    ® Invacare - PRONTO M41 SERVICE MANUAL Installing the front cover: ● Pull joystick cable through the center hole in the top cover (5). ● Place the top cover (5) on the base frame. Note Pull the cover forward to clear the motor release levers.

  • Page 38: Removing/Installing The Rear Cover

    ® SERVICE MANUAL Invacare - PRONTO M41 8.1.3 Removing/Installing the rear cover Requirements: ● Slotted screwdriver ● Phillips screwdriver Removing the rear cover: ● Remove the two screws (2) that secure the rear cover (4) to the frame (3). ●...

  • Page 39: Removing/Installing The Swingarm Assembly

    ® Invacare - PRONTO M41 SERVICE MANUAL 8.1.4 Removing/Installing the swingarm assembly Requirements: ● 24 mm open-ended wrench ● 19 mm socket wrench ● 13 mm socket wrench ● 11 mm socket wrench Removing the swingarm assembly: ● Remove the front caster assembly, as described in chapter 8.4.4 ●...

  • Page 40: Removing/Installing The Spring

    ® SERVICE MANUAL Invacare - PRONTO M41 8.1.5 Removing/Installing the spring Removing the spring: ● Unhook the spring (1) from the hooks (2) on the frame (3) and the bracket (4). Installing the spring: ● Install the spring (1) to the hooks (2) on the frame (3) and the bracket (4).

  • Page 41: Electronics

    ® Invacare - PRONTO M41 SERVICE MANUAL Electronics WARNING! After any adjustments, repair or service and before use, make sure that all attaching hardware is tightened securely - otherwise injury or damage may result. ● Before performing any maintenance, adjustment or service verify that On/Off switch on the joystick is in the off position.

  • Page 42: Repositioning The Joystick Mounting Bracket (Office Style Seat)

    ® SERVICE MANUAL Invacare - PRONTO M41 8.2.2 Repositioning the joystick mounting bracket (office style seat) Not e Take note of position and orientation of mounting hardware for reinstalling the joystick assembly. Requirements: ● 2 x 1/4" open-ended wrenches Armrest plate...

  • Page 43: Disconnecting/Connecting The Joystick

    ® Invacare - PRONTO M41 SERVICE MANUAL 8.2.3 Disconnecting/Connecting the joystick Seat Light grey collar Joystick cable Power module connector Joystick Joystick connector Disconnecting the joystick: ● Hold the light Grey collar (4) portion of the joystick connector (6) with one hand and the power module connector (5) on the wheelchair in the other and disconnect them by pulling them apart.

  • Page 44: Replacing The Acs2 Power Module

    • Changes to the drive program may only be carried out by trained Invacare® specialist dealers! • Invacare® can only give a warranty for safe mobility aid driving behaviour - especially tipping stability - for unaltered standard drive programs! Note All power modules are delivered with a standard drive program.
  • Page 45 ® Invacare - PRONTO M41 SERVICE MANUAL ● Use the 8 mm socket wrench to loosen self-locking nuts (2) and remove the nuts including the washers. ● Pull the power module towards the rear and off of the guides. ●...

  • Page 46: Replacing The Actuator Module

    ® SERVICE MANUAL Invacare - PRONTO M41 8.2.5 Replacing the actuator module Requirements: ● 4 mm Allen key ● 8 mm socket wrench ● 7 mm socket wrench (actuator module) Removing the actuator module: ● Switch the electronics OFF on the remote.
  • Page 47 ® Invacare - PRONTO M41 SERVICE MANUAL ● Loosen and remove the self-locking nuts (1) with a 7 mm socket wrench. ● Pull the actuator module (2) from the holding (3). ● Replace the actuator module. Installing the actuator module: ●...

  • Page 48: Replacing The Shark Power Module

    ® SERVICE MANUAL Invacare - PRONTO M41 8.2.6 Replacing the Shark power module WARNING! Do not attempt to perform this procedure with any power supplied to the wheelchair. The joystick and batteries (6) must be disconnected prior to beginning to remove the power module.

  • Page 49: Updating The Driving Program

    • Alterations to the drive program must only be carried out by trained Invacare®-dealers! • Invacare® can only assume a warranty for the safe vehicle handling of the wheelchair – in particular tipping stability - for unaltered standard drive programs! Pre-requisites: ●...

  • Page 50: Wheels

    ® SERVICE MANUAL Invacare - PRONTO M41 Wheels WARNING! After ANY adjustments, repair or service and before use, make sure all attaching hardware is tightened securely - otherwise injury or damage may result. ● Before performing any maintenance, adjustment or service verify that ON/OFF switch on the joystick is in the OFF position.

  • Page 51: Adjusting Forks

    ® Invacare - PRONTO M41 SERVICE MANUAL Note If the caster moves side to side, tighten the locknut slightly. Repeat the last step until there is no side to side movement of the caster. 8.4.3 Adjusting forks Requirements: ● Ratchet with 15/16" socket ●...

  • Page 52: Removing/Installing Forks And/Or Caster Assemblies

    ® SERVICE MANUAL Invacare - PRONTO M41 8.4.4 Removing/Installing forks and/or caster assemblies Note Front and rear forks are replaced in the same manner. Requirements: ● Ratchet with 15/16" socket Removing forks and/or caster assemblies: ● Remove the caster (7) from the fork if necessary. Refer to chapter 8.4.2.

  • Page 53: Drive Wheels

    ® Invacare - PRONTO M41 SERVICE MANUAL Drive wheels 8.5.1 Removing/Installing the drive wheel Requirements: ● 19 mm socket spanner Removing the drive wheel: ● Remove locknut (1) and washer (2). ● Remove the wheel (4) from the drive shaft (6). If necessary, use a wheel puller to remove the wheel (4) from the drive shaft (6).

  • Page 54: Drive Unit

    ® SERVICE MANUAL Invacare - PRONTO M41 Drive unit WARNING! Personal injury or damage may occur in case of repairing or servicing the wheelchair. ● After ANY adjustments, repair or service and before use, make sure that all attaching hardware is tightened securely.
  • Page 55 ® Invacare - PRONTO M41 SERVICE MANUAL ● Remove the locknut (2) and spacer (3) that secure the swingarm (4) assembly to the frame (9). ● Remove the swingarm (4) and motor (5). ● Remove the four screws (1) that secure the swingarm (4) assembly to the motor (5).

  • Page 56: Batteries

    ● Make sure power to the wheelchair is off before performing this section. ● The use of rubber gloves is recommended when working with batteries. ● Invacare strongly recommends that battery installation and battery replacement ALWAYS be done by a qualified technician.

  • Page 57: Using The Proper Batteries

    ® Invacare - PRONTO M41 SERVICE MANUAL 8.7.2 Using the proper batteries ● Place battery (1) on ground/flat surface. ● Visually draw a horizontal and vertical centerline through the middle of battery. ● Position the battery so that the terminals are above the horizontal centerline.

  • Page 58: Removing/Installing Batteries

    ® SERVICE MANUAL Invacare - PRONTO M41 8.7.3 Removing/Installing batteries Requirements: ● 7/16" (6PT) Box Wrench ● Diagonal Cutters WARNING! Injury hazard due to discharged acid. ● Always use the battery handle when lifting the battery. It is the most convenient method and assures that the battery acid will not spill.
  • Page 59 ® Invacare - PRONTO M41 SERVICE MANUAL Removing the battery: ● Verify the joystick ON/OFF switch is in the OFF position and disconnect joystick cable (not shown), refer to chapter 8.2.3. ● Remove the seat (chapter 8.9.1.1) or move the seat into the service position (Modulite seat) as described in chapter 8.9.2.1.

  • Page 60: Connecting/Disconnecting Battery Cables

    ® SERVICE MANUAL Invacare - PRONTO M41 8.7.4 Connecting/Disconnecting battery cables 8.7.4.1 Connecting battery cables DANGER: ELECTRICAL HAZARD! Serious personal injury or damage may occur in case of an electrical short. ● NEVER allow any of your tools and/or battery cables to contact both battery terminals at the same time.
  • Page 61 ® Invacare - PRONTO M41 SERVICE MANUAL Black connectors Red connector Negative (-) battery terminal Posititve (+) battery terminal Posititve (+) battery cable Mounting screw Batteries 30-34 Ah (C20) Posititve (+) battery terminal Tie-wraps Negative (--) battery terminal L-bracket with mounting...

  • Page 62: Disconnecting Battery Cables

    ® SERVICE MANUAL Invacare - PRONTO M41 8.7.4.2 Disconnecting battery cables DANGER: ELECTRICAL HAZARD! Serious personal injury or damage may occur in case of an electrical short. ● The use of rubber gloves is recommended when working with batteries. ● NEVER allow any of your tools and/or battery cables to contact both battery terminals at the same time.

  • Page 63: Correct Handling Of Damaged Batteries

    ® Invacare - PRONTO M41 SERVICE MANUAL ● Remove the seat, as described in chapter 8.9.1.1. ● Remove the batteries, as described in chapter 8.7.3. ● Cut the tie‐wrap (13) that secures the battery terminal cap (2) (4) in place.

  • Page 64: Cables

    ® SERVICE MANUAL Invacare - PRONTO M41 Cables 8.8.1 Cable routing WARNING! Cables must be secured to the wheelchair frame and/or base with tie-wraps after servicing is complete. Failure to follow the warnings and instructions below could result in injury to the users, attendants and/or bystanders and/or damage to the wheelchair.

  • Page 65: Checking The Cables

    ® Invacare - PRONTO M41 SERVICE MANUAL 8.8.2 Checking the cables ● Switch the electronics OFF on the remote. ● Remove the rear and top cover as described in chapter 8.1.1 and chapter 8.1.3. ● Move the seat into the service position (Modulite seat) as described in chapter 8.9.2.1 ●...

  • Page 66: Seat System

    ® SERVICE MANUAL Invacare - PRONTO M41 Seat system 8.9.1 Captain's seat/standard seat WARNING! After any adjustments, repair or service and before use, make sure that all attaching hardware is tightened securely - otherwise injury or damage may result. ● Before performing any maintenance, adjustment or service verify that ON/OFF switch on the joystick is in the OFF position.

  • Page 67: Modulite Seat

    ® Invacare - PRONTO M41 SERVICE MANUAL 8.9.2 Modulite Seat 8.9.2.1 Moving the seat into the service position It is necessary to move the seat into the service position or to remove it for maintenance purposes or if the batteries have to be removed.
  • Page 68 ® SERVICE MANUAL Invacare - PRONTO M41 The seat is now in the service position.

  • Page 69: Replacing The Seat Angle Adjustment Actuator

    ® Invacare - PRONTO M41 SERVICE MANUAL 8.9.2.2 Replacing the seat angle adjustment actuator Requirements: ● Screwdriver, flat, width 6 mm ● 13 mm open-ended wrench (2x) ● Remove legrests. ● Switch the electronics OFF on the remote. ● Disconnect the actuator cable from the cable harness.

  • Page 70: Replacing The Lifter Actuator

    ® SERVICE MANUAL Invacare - PRONTO M41 8.9.2.3 Replacing the lifter actuator Requirements: ● Flat screwdriver ● Remove legrests. ● Run the lifter up to if possible. ● Switch the electronics OFF on the remote. ● Secure the seat. ●...

  • Page 71: Replacing The Lifter / Seat Angle Adjustment Module

    ® Invacare - PRONTO M41 SERVICE MANUAL 8.9.2.4 Replacing the lifter / seat angle adjustment module Note Replacement of the seat angle adjustment module is performed in the same manner. CAUTION: Risk of crushing! The seat is very heavy. Risk of injury to hands and feet! •...
  • Page 72 ® SERVICE MANUAL Invacare - PRONTO M41 ● Remove the seat frame by removing the screws (1) with a T40 Torx wrench. ● Disconnect the actuator cable and microswitch cable from the cable harness.
  • Page 73 ® Invacare - PRONTO M41 SERVICE MANUAL ● Loosen and remove the screws (2) including the washers with a 5 mm Allen key. ● Lift the module of the seat angle adjustment (1) from the frame and replace it. ●...

  • Page 74: Replacing The Backrest Actuator

    ® SERVICE MANUAL Invacare - PRONTO M41 8.9.2.5 Replacing the backrest actuator Dismantling the backrest actuator: ● Pull the cable off directly where it is connected to the actuator (1). ● Detach the bracket of the actuator at the top and bottom; to do this, slide the bolts (3) to the side using the lever (4) and tilt the actuator (1) out of the backrest clamp (2).

  • Page 75: Replacing The Seat Support (Without Lifter Or Seat Angle Adjustment Modules)

    ® Invacare - PRONTO M41 SERVICE MANUAL 8.9.2.6 Replacing the seat support (without lifter or seat angle adjustment modules) Note This chapter deals with replacing the seat support for a seat without lifter or seat angle adjustment modules. Please proceed as described in chapter 8.9.2.4 to replace lifter or seat angle adjustment modules.
  • Page 76 ® SERVICE MANUAL Invacare - PRONTO M41 Uninstalling the seat support (adjustable seat / simple seat) Requirements: ● 6 mm Allen key ● 13 mm open-ended wrench The following figure shows the seat support with the adjustable seat plate. ●...
  • Page 77 ® Invacare - PRONTO M41 SERVICE MANUAL Installing the seat and seat support ● Assemble all parts in reverse order. Note Make sure that all screws, washers and nuts are reassembled in the correct order and securely tightened during assembly.

  • Page 78: Backrest Unit - Modulite

    ® SERVICE MANUAL Invacare - PRONTO M41 8.9.3 Backrest unit - Modulite 8.9.3.1 Replacing the standard backrest Requirements: ● 5 mm Allen key Dismantling the backrest unit: ● Remove the backrest cushion. ● Loosen the fixation lever (2) of the backrest tube.

  • Page 79: Replacing The Backrest Mounting Bracket

    ® Invacare - PRONTO M41 SERVICE MANUAL 8.9.3.2 Replacing the backrest mounting bracket Requirements: ● 5 mm Allen key Dismantling the backrest unit: ● Remove the backrest cushion. ● Loosen the fixation levers (2) of the corresponding backrest tube (1), depending on the version.

  • Page 80: Adjusting The Seat Width/ Backrest Width (Modulite)

    ® SERVICE MANUAL Invacare - PRONTO M41 8.10 Adjusting the seat width/ backrest width (Modulite) 8.10.1 Adjusting the seat width You can only adjust the seat width for the adjustable seat plate or for the adjustable sling seat. The sling seat is available in two widths: for a seat width of 38-43 cm and for a seat width of 48-53 cm.
  • Page 81 ® Invacare - PRONTO M41 SERVICE MANUAL • Loosen and remove the screws of the seat frame adjustment (A) with a T40 Torx wrench. • Loosen and remove the screws of the fixation of the legrest mounting brackets (B). • Adjust the seat frame and the legrest fixation to the desired width according to the following...

  • Page 82: 8.10.2 Adjusting The Backrest Width

    ® SERVICE MANUAL Invacare - PRONTO M41 8.10.2 Adjusting the backrest width The backrest width is adjusted by performing the following tasks: ● Adjust the backrest tube. ● Adjust the backrest: - Sling backrest, as described in chapter 8.11.1. - Flex3 backrest, as described in chapter 8.10.3.
  • Page 83 ® Invacare - PRONTO M41 SERVICE MANUAL ● Remove the backrest cushion. ● Loosen the straps of the sling backrest or remove the Flex3 backrest. ● Loosen and remove both screws (5) of the actuator fixation bracket. ● Remove the cover of the actuator fixation bracket.

  • Page 84: 8.10.3 Adjusting The Flex3 Backrest

    ® SERVICE MANUAL Invacare - PRONTO M41 8.10.3 Adjusting the Flex3 backrest Requirements: ● Phillips screwdriver ● 5 mm Allen key ● Remove the front lateral plates (2 and 4) from the backrest (1) by loosening and removing the five hexagon socket head screws (3).

  • Page 85: Backrest Unit - Standard

    ® Invacare - PRONTO M41 SERVICE MANUAL 8.11 Backrest unit - Standard 8.11.1 Adjusting sling backrest (standard seat) The sling backrest can be individually adapted to the user's back shape. ● Pull the front and rear faces of the backrest upholstery (1) apart and remove. The backrest upholstery front and rear faces are held together using Velcro fastenings.

  • Page 86: 8.11.2 Replacing The Standard Backrest

    ® SERVICE MANUAL Invacare - PRONTO M41 8.11.2 Replacing the standard backrest Requirements: ● TX30 Torx wrench with T-handle ● 5 mm Allen key ● 10 mm open-ended wrench ● 2 x 13 mm open-ended wrench Dismantling the backrest unit: ●...

  • Page 87: Armrest

    ® Invacare - PRONTO M41 SERVICE MANUAL 8.12 Armrest WARNING! After any adjustments, repair or service and before use, make sure that all attaching hardware is tightened securely - otherwise injury or damage may result. ● Before performing any maintenance, adjustment or service verify that On/Off switch on the joystick is in the off position.

  • Page 88: Replacing The Armrest Assembly (Captain's Seat)

    ® SERVICE MANUAL Invacare - PRONTO M41 8.12.2 Replacing the armrest assembly (Captain's seat) Requirements: ● 12 mm box wrench ● 13 mm box wrench ● If necessary, remove the joystick. Refer to chapter 8.2.1. ● Remove the mounting screw (6), three washers (5), and locknut (4) that secures the existing armrest (1) to the arm post.

  • Page 89: Removing/Installing Armrest (Modulite Seat)

    ® Invacare - PRONTO M41 SERVICE MANUAL 8.12.3 Removing/Installing Armrest (Modulite seat) Requirements: ● 8 mm Allen key ● If necessary, disconnect the joystick. Refer to chapter 8.2.3. ● Loosen the Allen screw (1) with an 8 mm Allen key.

  • Page 90: Replacing The Armrest (Modulite Seat)

    ® SERVICE MANUAL Invacare - PRONTO M41 8.12.4 Replacing the armrest (Modulite seat) ● If necessary, remove the joystick. Refer to chapter 8.2.3. ● Loosen the wing screw (1) that secures the armrest (2) to the holder. ● Replace the armrest (2).

  • Page 91: Footboard

    ® Invacare - PRONTO M41 SERVICE MANUAL 8.13 Footboard 8.13.1 Removing/Installing the footboard assembly WARNING! Pinch point may occur when rotating the footboard assembly. Removing the footboard assembly: ● Remove the quick release pin (2) that secures the footboard assembly (4) to the wheelchair frame by depressing the button while sliding the pin out.

  • Page 92: Accessoires

    ® SERVICE MANUAL Invacare - PRONTO M41 Accessoires WARNING! After any adjustments, repair or service and before use, make sure that all attaching hardware is tightened securely - otherwise injury or damage may result. ● Before performing any maintenance, adjustment or service verify that On/Off switch on the joystick is in the off position.

  • Page 93: Replacing The Postural Belt (Standard Seat)

    ® Invacare - PRONTO M41 SERVICE MANUAL 9.1.2 Replacing the postural belt (standard seat) Note A nut is fixed between the two washers (2) and (4) as a spacer so that the belt mounting can rotate freely. Requirements: ● 5 mm Allen key ●...

  • Page 94: Replacing Postural Belts (Modulite Seat)

    ® SERVICE MANUAL Invacare - PRONTO M41 9.1.3 Replacing postural belts (Modulite seat) 9.1.3.1 Installation on the backrest mounting bracket (simple backrest) Requirements: ● 13 mm socket wrench ● 5 mm Allen key ● The postural belts are attached via the drill hole (1) at the top right.

  • Page 95: Installation On The Backrest Mounting Bracket (Adjustable Seat)

    ® Invacare - PRONTO M41 SERVICE MANUAL 9.1.3.2 Installation on the backrest mounting bracket (adjustable seat) Requirements: ● 5 mm Allen key ● Loosen the screw (1) with a 5 mm Allen key. ● Remove the screw (1), the corresponding washer (2) and the postural belt and belt winder (3) from the backrest mounting bracket (4).

  • Page 96: Installation On The Seat Frame Profile (Adjustable Seat)

    ® SERVICE MANUAL Invacare - PRONTO M41 9.1.3.3 Installation on the seat frame profile (adjustable seat) Requirements: ● 5 mm Allen key ● Loosen the screw (1) with a 5 mm Allen key. ● Remove the screw (1), the washer (2), the postural belt, the sliding bushing (3) and the sliding block (4) from the seat frame profile (5).

  • Page 97: Further Accessoires

    ® Invacare - PRONTO M41 SERVICE MANUAL Further accessoires Note The installation instructions for additional accessories are available at your Invacare® specialist ® supplier or directly from Invacare...

  • Page 98: Adjusting The Seating Position

    Any changes to the drive program can affect the driving characteristics and the tipping stability of the vehicle! • Changes to the drive program may only be carried out by trained Invacare® specialist dealers! • Invacare® supplies all mobility aids with a standard drive program ex-works. Invacare® can...

  • Page 99: Adjusting The Lower Leg Length And Seat Depth

    10.1 Adjusting the lower leg length and seat depth 10.1.1 Adjusting the lower leg length Invacare® offers a range of legrests which can be adjusted individually. See user manual. 10.1.2 Adjusting the seat depth Pay attention to the center of gravity of the seat. The seat can be adjusted by mounting the seat frame farther towards the front or the rear on the seat, see also chapter 10.3.
  • Page 100 ® SERVICE MANUAL Invacare - PRONTO M41 Minimum Seat Depth Middle Seat Depth Maximum Seat Depth Seat Depth Seat Size Seat Depth Seat Size Seat Depth Seat Size 16 inch 18 x 18 inch 17 inch 18 x 18 inch...
  • Page 101 ® Invacare - PRONTO M41 SERVICE MANUAL Seat assambly Standard seat position Seat base 1-inch (25,4 mm) forward seat position* Washers 1-inch (25,4 mm) back seat position Mounting screws Standard seat position 1-inch (25,4 mm) back seat position 1-inch (25,4 mm) forward position* ●...
  • Page 102 ® SERVICE MANUAL Invacare - PRONTO M41 Weight Seat post 1-Inch (25,4 mm) Standard 1-Inch (25,4 mm) Limitation Mounting hole Back Forward 150 LBS (68 kg) Legend: Y - Use N/A - Do not use...

  • Page 103: 10.1.2.2 Standard Seat

    ® Invacare - PRONTO M41 SERVICE MANUAL 10.1.2.2 Standard seat WARNING: Risk of crushing! The seat is very heavy. Risk of injury to hands and feet! • Use proper lifting techniques. Requirements: ● 4 mm Allen key ● 10 mm open-ended wrench The pictures show the standard seat without seat cushion from above (A) und below (B).

  • Page 104: 10.1.2.3 Modulite Seat

    ® SERVICE MANUAL Invacare - PRONTO M41 The picture shows where the drillholes for fixing the seat frame (3) are located on the base frame. ● Rear drillholes (1) ● Front bolts (2) ● The seat frame can only be fixed in one position on the base frame.

  • Page 105: Adjusting The Seat Height And Seat Angle

    ® Invacare - PRONTO M41 SERVICE MANUAL 10.2 Adjusting the seat height and seat angle 10.2.1 Adjusting the seat height (Captain's seat and standard seat) Note The seat can be adjusted to five height positions in 1‐inch (25,4 mm) increments.

  • Page 106: Adjusting The Seat Height (Modulite Seat)

    ® SERVICE MANUAL Invacare - PRONTO M41 10.2.2 Adjusting the seat height (Modulite seat) Requirements: ● 13 mm open-ended wrench ● Remove the seat plate or sling seat, see chapter 8.10.1. ● Loosen and remove the screws (3) and the self-locking nuts (1) in the front and rear (2) with...

  • Page 107: Adjusting The Seat Angle (Modulite Seat)

    ® Invacare - PRONTO M41 SERVICE MANUAL Seat height Mounting Seat plate Sling seat position 450 mm 470 mm 490 mm ● Adjust the seat frame (2) to the desired mounting position (a, b or c). ● Refit the screws and self-locking nuts.

  • Page 108: Adjusting The Center Of Gravity Of The Seat

    ® SERVICE MANUAL Invacare - PRONTO M41 Mounting Seat angle position 0° 2° 4° 6° ● Choose the desired hole (1) to adjust the seat angle with the seat frame (3). (pay attention to the desired mounting position a … d).

  • Page 109: 10.3.1 Captain's Seat And Standard Seat

    ® Invacare - PRONTO M41 SERVICE MANUAL Note The user weight and seat depth have strong influences on the choice of the center of gravity of the seat. If the user is heavy and the seat depth is greater, the focus should be the farther back.

  • Page 110: Final Check

    ® SERVICE MANUAL Invacare - PRONTO M41 Final check After servicing, always carry out a trial run to test the vehicle functions to ensure correct and safe functioning of the mobility device.
  • Page 111 +44 (0)1656 77 62 20 Pencoed Technology Park uk@invacare.com Pencoed Bridgend CF35 5HZ WWW: www.invacare.co.uk United Kingdom Invacare Mecc San s.r.l. +39 0445 38 00 59 : Fax: +39 0445 38 00 34 Via dei Pini, 62 italia@invacare.com I - 36016 Thiene (VI) WWW: www.invacare.it...
  • Page 112 Fagerstagatan 9 finland@invacare.com S-163 91 Spånga WWW: www.invacare.se Sverige MÖLNDAL Tillverkare: +46 (0)31 86 36 00 : Invacare® Deutschland GmbH Fax: +46 (0)31 86 36 06 Kleiststraße 49 ginvacare@invacare.com D-32457 Porta Westfalica Deutschland LANDSKRONA +46 (0)418 2 85 40 :...

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