Invacare A-4 User Manual
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Invacare A-4 User Manual

Invacare A-4 User Manual

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Invacare® A-4® Wheelchair

User Manual

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This manual MUST be given to the user of the product.
BEFORE using this product, read this manual and save for future reference.

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Summary of Contents for Invacare A-4

  • Page 1: User Manual

    Invacare® A-4® Wheelchair User Manual This manual MUST be given to the user of the product. BEFORE using this product, read this manual and save for future reference.
  • Page 2 © 2010 Invacare Corporation. All rights reserved. Republication, duplication or modification in whole or in part is prohibited without prior written permission from Invacare. Trademarks are identified by ™ and ®. All trademarks are owned by or licensed to Invacare Corporation or its subsidiaries unless otherwise noted.

  • Page 3: Table Of Contents

    A Note to Wheelchair Assistants........................................23 Tipping ..................................................24 Tipping - Curbs..............................................24 Stairways ................................................25 Escalators ................................................27 Transferring To and From Other Seats......................................27 SAFETY INSPECTION Safety Inspection Checklist ..........................................28 Troubleshooting..............................................31 Maintenance ................................................31 Part No 1110545 Invacare® A-4® Wheelchair...
  • Page 4 Repositioning Camber Inserts (Adjusting Rear Wheel Camber)............................. 54 Adjusting Wheelbase Length (Adjusting Center Of Gravity)..............................56 Adjusting Wheelbase Width ..........................................59 Replacing Axle Tube............................................60 WHEELS Removing/Installing Rear Wheels........................................63 Adjusting Quick- Release Axle ......................................... 64 Installing Quad-release Axle..........................................64 Invacare® A-4® Wheelchair Part No 1110545...
  • Page 5 11 ARMS Installing The T-arm Sockets..........................................90 Installing/Removing T-arms..........................................91 Adjusting The T- Arms ............................................92 Adjusting T-Arm Sockets ........................................... 94 Adjusting T-arm Transfer Assists and/or Side Guards................................96 Replacing T-arm Locking Lever ........................................96 Part No 1110545 Invacare® A-4® Wheelchair...
  • Page 6 CONTENTS Installing The Half Arm Socket ......................................... 98 Adjusting Half Arm Height..........................................100 12 SUSPENSION Elastomers And Suspension..........................................101 Replacing Rear Elastomers..........................................101 Replacing Front Elastomers ..........................................102 Invacare® A-4® Wheelchair Part No 1110545...

  • Page 7: General

    Caution indicates a potentially hazardous situation which, if not avoided, may result in property damage or minor injury or both. IMPORTANT Indicates a hazardous situation that could result in damage to property if it is not avoided. Gives useful tips, recommendations and information for efficient, trouble-free use.  Part No 1110545 Invacare® A-4® Wheelchair...

  • Page 8: Limited Warranty

    (1) year from date of purchase except upholstered materials, padded materials and tires/wheels. If within such warranty period any such product shall be proven to be defective, such product shall be repaired or replaced at Invacare's option. This warranty does not include any labor or shipping charges incurred in replacement part installation or repair of any such product.

  • Page 9: Safety

    Invacare and are not recommended for use with Invacare products. NOTICE THE INFORMATION CONTAINED IN THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. Check all parts for shipping damage and test before using. In case of damage, DO NOT use. Contact Invacare/Carrier for further instruction. Part No 1110545...
  • Page 10 Wheelchair User As a manufacturer of wheelchairs, Invacare endeavors to supply a wide variety of wheelchairs to meet many needs of the end user. However, final selection of the type of wheelchair to be used by an individual rests solely with the user and his/her healthcare professional capable of making such a selection.
  • Page 11 ✓ ✓ ✓ ✓ REAR WHEEL POSITION N/A N/A N/A ● ✓ ✓ ✓ ✓ ✓ ANTI-TIPPERS N/A N/A N/A N/A ● ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ USER CONDITION Part No 1110545 Invacare® A-4® Wheelchair...
  • Page 12 DO NOT stand on the frame of the wheelchair. ALWAYS keep hands and fingers clear of moving parts to avoid injury. Invacare® A-4® Wheelchair Part No 1110545...
  • Page 13 Extra caution MUST be observed when traversing such surfaces. Inasmuch as the anti-tippers are an option on this wheelchair (you may order with or without the anti-tippers), Invacare strongly recommends ordering the anti-tippers as an additional safeguard for the wheelchair user.
  • Page 14 Invacare DOES NOT recommend the use of its wheelchairs as a weight training apparatus. Invacare wheelchairs have not been designed or tested as a seat for any kind of weight training. If occupant uses said wheelchair as a weight training apparatus, Invacare shall not be liable for bodily injury and the warranty is void.

  • Page 15: Overview

    THE ANTI-TIP TUBES 1085379 INSTALLED. REV. 5/98 P/N 60106X144 Detent balls should extend beyond the diameter of the WARNING axle bushing for a positive lock. Keep detent balls clean. P/N 1026960 Rev D FIGURE 1 Label Locations Part No 1110545 Invacare® A-4® Wheelchair...

  • Page 16: Component Identification

    3 OVERVIEW Component Identification Back Upholstery Seat Rear Wheel Upholstery Wheelchair Frame Rear Wheel Axle Front Caster Handrim Wheel Lock Invacare® A-4® Wheelchair Part No 1110545...

  • Page 17: Typical Product Parameters

    24 inch to 20 inches 26 inch BACK STYLE Fold down BACK HEIGHT 8 to 20 inches (adjustable) (8-11, 10-14, 12-16, 14-18 or 16-20 inch ranges) FOOTREST 5 inch, adjustable height, adjustable angle or tubular Part No 1110545 Invacare® A-4® Wheelchair...
  • Page 18 Half (Swingaway Padded) or “T” 22 pounds - 16 x 16 frame, with anti-tippers, 24 inch spoke wheels, and dual camber inserts WEIGHT** 34 pounds - 15 x 15 seat frame with complete package SHIPPING WEIGHT** (APPROX) Invacare® A-4® Wheelchair Part No 1110545...
  • Page 19 These heights can vary ±1/4 inch due to tire wear. Add one (1) inch for wheelchairs with the suspension option. **Subtract one (1) pound for Titanium models. Subtract one-half (1/2) pound for single camber inserts. Add one (1) pound for wheelchairs with the suspension option. Part No 1110545 Invacare® A-4® Wheelchair...

  • Page 20: Safety/Handling Of The Wheelchair

    Use this information only as a “basic” guide. The techniques that are discussed on the following pages have been used successfully by many. Individual wheelchair users often develop skills to deal with daily living activities that may differ from those described in this manual. Invacare recognizes and encourages each individual to try what works best for him/her in overcoming architectural obstacles that they may encounter, however, ALL WARNINGS and CAUTIONS given in this manual MUST be followed.
  • Page 21 4 SAFETY/HANDLING OF THE WHEELCHAIR Virtually all activities which involve movement in the wheelchair have an effect on the center of gravity. Invacare recommends using seat positioning straps for additional safety while involved in activities that shift your weight. DO NOT lean forward out of the wheelchair any further than stability will allow. Make sure casters are pointing in the forward position whenever you lean forward.
  • Page 22 DO NOT attempt to reach objects if you have to move forward in the seat or pick them up from the floor by reaching down between your knees. Position the front casters so that they are extended as far forward as possible and engage wheel locks. Invacare® A-4® Wheelchair Part No 1110545...

  • Page 23: Coping With Everyday Obstacles

    Do not attempt to lift a wheelchair by lifting on any removable (detachable) parts. Lifting by means of any removable (detachable) parts of a wheelchair may result in injury to the user or damage to the wheelchair. Part No 1110545 Invacare® A-4® Wheelchair...

  • Page 24: Tipping

    Tipping - Curbs WARNING Invacare does not recommend that sport wheelchairs be used where traversing curbs present an obstacle. Possible injury to occupant and/or assistant(s) can occur. Transfer to an everyday use wheelchair is recommended if any such obstacles may be encountered.

  • Page 25: Stairways

    Stairways WARNING Extreme caution is advised when it is necessary to move an occupied wheelchair up or down a stairway. Invacare recommends that, if possible, the user be removed from the wheelchair prior to moving. Invacare recommends using two assistants and making thorough preparations. Make sure to use only secure, non-detachable parts for hand-held supports.
  • Page 26 The wheelchair should not be lowered until the last stair has been negotiated and the wheelchair has been rolled away from the stairway. FIGURE 4 Stairways If necessary, rotate the anti-tippers so the wheels are facing down. Invacare® A-4® Wheelchair Part No 1110545...

  • Page 27: Escalators

    Engage wheel locks. Shift body weight into seat with transfer. During independent transfer, little or no seat platform will be beneath you. Use a transfer board if at all possible. FIGURE 5 Transferring To and From Other Seats Part No 1110545 Invacare® A-4® Wheelchair...

  • Page 28: Safety Inspection

    Inspect seat positioning strap for any signs of wear. Ensure buckle latches. Verify hardware that attaches strap to frame is secure and undamaged. Replace if necessary. ❑ Ensure hand grips (if equipped) are not loose. Invacare® A-4® Wheelchair Part No 1110545...
  • Page 29 Inspect handrims for signs of rough edges or peeling. ❑ Inspect spokes for bent or broken spokes. ❑ Ensure All spokes uniformly tight. ❑ Inspect wheel/fork assembly for proper tension by spinning caster; caster should come to a gradual stop. Part No 1110545 Invacare® A-4® Wheelchair...
  • Page 30 Inspect handrims for signs of rough edges or peeling. ❑ Clean upholstery and armrests. ❑ Ensure wheel bearings are clean and free of moisture. ❑ Check that all labels are present and legible. Replace if necessary. Invacare® A-4® Wheelchair Part No 1110545...

  • Page 31: Troubleshooting

    Replace any labels that are missing, worn, or torn. Refer to Label Locations on page 12 for a listing of the labels and their locations CAUTION DO NOT overtighten hardware attaching to the frame. This could cause damage to the frame tubing. Part No 1110545 Invacare® A-4® Wheelchair...
  • Page 32 The recommended tire pressure is on the sidewall of the tire. CAUTION As with any vehicle, the wheels and tires should be checked periodically for cracks and wear, and should be replaced if damaged. Invacare® A-4® Wheelchair Part No 1110545...
  • Page 33 Invacare recommends that rear wheel tire/tube and caster tire/tube be replaced every five years. Regularly check for loose spokes in the rear wheels. If loose, have them adjusted. Contact a qualified technician or Invacare customer support at the telephone numbers on the back of this manual.

  • Page 34: Upholstery

    Wrap the fastening flap around the back cane again and press firmly to secure. Fold the top of the back upholstery down over the back canes towards the front of the wheelchair. Press firmly to secure the fastening strips. Invacare® A-4® Wheelchair Part No 1110545...

  • Page 35: Adjustable Tension Back Upholstery

    After the adjustable tension back upholstery has been positioned to the end-user's individual needs, the fastening straps MUST be securely fastened before applying the back upholstery cover. The adjustable tension back should be checked whenever entering the wheelchair to ensure that the fastening/adjuster straps are securely fastened. Part No 1110545 Invacare® A-4® Wheelchair...

  • Page 36: Removing/Installing Adjustable Tension Back Upholstery

    Adjust the adjuster straps to the desired tension. Secure adjustable tension back upholstery to the back canes with the mounting screws. Torque to 20-25 in./lbs.  Clean the upholstery with warm water and mild detergent to remove superficial soil. Invacare® A-4® Wheelchair Part No 1110545...

  • Page 37: Seat Upholstery Replacement

    Remove the phillips screws that secure the existing seat upholstery to the seat frame. Remove the existing seat upholstery. Install the NEW seat upholstery by reversing the above steps. Reinstall the seat cushion onto the wheelchair. Part No 1110545 Invacare® A-4® Wheelchair...

  • Page 38: Unfolding/Folding The Back

    To unfold the back, lift up on the back canes and pull back towards the rear of the wheelchair until it locks into place. To fold the back, pull up on the cord and push the back canes forward towards the front of the wheelchair. Invacare® A-4® Wheelchair Part No 1110545...
  • Page 39 6 UPHOLSTERY  Back Cane Back Upholstery removed for clarity. Rear of Wheelchair Front of Wheelchair Back Release Cord (Not Shown) FIGURE 4 Unfolding/Folding the Back Part No 1110545 Invacare® A-4® Wheelchair...

  • Page 40: Frame

    Secure cam in desired position. Tighten hex screws and locknuts securely. DO NOT distort frame tube.  As shown in FIGURE 1, the adjustment cam can be rotated to several different positions thus changing the overall back angle relative to the seat rail. Invacare® A-4® Wheelchair Part No 1110545...
  • Page 41 Back Angle Bracket Top Hex Screw Indexing Notch Notch and Locknut Seat Rail Top Hex Screw Indexing Notch and Locknut Back Angle Bracket Back Angle Bracket Seat Rail Seat Rail FIGURE 1 Back Angle Adjustment Part No 1110545 Invacare® A-4® Wheelchair...

  • Page 42: Back Height Adjustment

    Reinstall back upholstery by performing one of the following: Standard Back Upholstery - Refer to Removing/Installing Standard Back Upholstery on page 34. Adj. Tension Back Upholstery - Refer to Removing/Installing Adjustable Tension Back Upholstery on page 36. Invacare® A-4® Wheelchair Part No 1110545...

  • Page 43: Rear Seat-To-Floor Height Adjustment

    After making adjustments, always make sure that ALL parts are properly tightened BEFORE using the wheelchair.  All A-4 wheelchairs are manufactured with the rear seat-to-floor height 1 inch lower than the front seat-to-floor height. Rear seat-to-floor height adjustment slots are in 1/2 inch increments. The number of available adjustment slots depends on the configuration of the wheelchair.

  • Page 44: Replacing Seat Frame

    17. secure the front of the back angle brackets to the seat frame with the bolts, washers, nylon spacers, coved spacers, washers and locknuts (Detail “C”). 18. Reverse STEPS 1-3 to install wheel locks, seat upholstery and rear wheels. Invacare® A-4® Wheelchair Part No 1110545...
  • Page 45 DETAIL “D” - Back Angle REMOVING/ INSTALLING THE Bracket INSTALLING THE BACK BACK Hook Washers Back Angle Bracket Seat Locknuts Frame Stop Stop Bolt Washer Coved Spacer Seat Rail Hook Nylon Spacer FIGURE 4 Replacing Seat Frame Part No 1110545 Invacare® A-4® Wheelchair...

  • Page 46: Opening/Closing Camber Clamps

    Standard Camber Clamps - Securely tighten the socket screw to secure the axle tube. Suspension Camber Clamps - Securely tighten the hex screw on the bottom rear of the camber clamp to secure the axle tube. Invacare® A-4® Wheelchair Part No 1110545...

  • Page 47: Determining Toe In/Toe Out

    If the back centerline measurement of the rear wheels is smaller than the front centerline measurement of the rear wheels, a toe-out condition exists. If the back centerline measurement of the rear wheels is larger than the front centerline measurement of the rear wheels, a toe-in condition exists. Part No 1110545 Invacare® A-4® Wheelchair...

  • Page 48: Adjusting Toe In/Toe Out

    Rear Centerline of Wheelchair Than Front FIGURE 6 Determining Toe In/Toe Out. Adjusting Toe In/Toe Out  If the axle tube has been repositioned or replaced, Refer to Adjusting The Axle Tube. on page 52. Invacare® A-4® Wheelchair Part No 1110545...

  • Page 49: Axle Tube Positioning For 0°/3°, 0°/6°, 3°/6° Or 9°/12° Camber Inserts

    Slowly rotate the axle tube until the tab on the left toe adjustment ring is stopped against the LOWER edge of the camber clamp. Close the camber clamps. Refer to Opening/Closing Camber Clamps on page 46. Part No 1110545 Invacare® A-4® Wheelchair...
  • Page 50 Right Tab Stopped Against Upper Adjustment Ring Edge Of Camber Clamp Edge Of Camber Clamp Right Toe Adjustment Ring Axle Tube (Locked Out By Toe Adjustment Rings And Will Not Rotate) FIGURE 7 Adjusting Toe In/Toe Out Invacare® A-4® Wheelchair Part No 1110545...
  • Page 51 Rotate UP Only Rotate UP Only Rotate UP Only Rotate UP Only Adjustment Ring Right Toe Adjustment Ring Right Tab Stopped Against Upper Edge Camber Clamp Of Camber Clamp FIGURE 8 Adjusting Toe In/Toe Out Part No 1110545 Invacare® A-4® Wheelchair...

  • Page 52: Adjusting The Axle Tube

    Measure the distance between the rear of the rear wheels and front of the rear wheels at the centerline of the rear wheels. Refer to Determining Toe In/Toe Out. on page 47. Perform one of the following: Toe In/Toe Out measurement is within ± inch - Proceed to STEP 9. Invacare® A-4® Wheelchair Part No 1110545...
  • Page 53 “L” Square camber clamp 90° Angle Ground/Floor Right Toe Adjustment Ring Axle Tube will rotate up only Right Tab Stopped against upper edge of camber clamp FIGURE 9 Adjusting The Axle Tube. 17. Repeat STEP 7. Part No 1110545 Invacare® A-4® Wheelchair...

  • Page 54: Repositioning Camber Inserts (Adjusting Rear Wheel Camber)

    Position camber insert to desired position. Make sure there are no more than 3 inches (12 indexing marks) of the camber inserts outside of axle tube. Slide the indexing ring on the camber insert until it is flush with the camber clamp. Invacare® A-4® Wheelchair Part No 1110545...
  • Page 55 Refer to Adjusting The Quad-release Handle on page 65 or Removing The Play From The Rear Wheels on page 66. 12. Ensure the wheelchair is parallel to the floor. Refer to Adjusting Caster Height on page 72. Part No 1110545 Invacare® A-4® Wheelchair...

  • Page 56: Adjusting Wheelbase Length (Adjusting Center Of Gravity)

    Non-suspension - Loosen, but do not remove the hex screw that secures each of the top clamps to the wheelchair frame. Suspension - Loosen, but do not remove the two hex screws that secure each of the top clamps to the wheelchair frame. Invacare® A-4® Wheelchair Part No 1110545...
  • Page 57 (Detail "A"). Roll the wheelchair before using to make sure there is no excessive drag to either side.  If drag to either side occurs, refer to Determining Toe In/Toe Out. on page 47. Part No 1110545 Invacare® A-4® Wheelchair...
  • Page 58 Socket Screw - Loosen Hex Screws Top Clamp But Do Not Remove Wheelchair Frame Back Post WheelchaIr Frame Axle Tube Camber Clamp Axle Tube Clamp SHORTENING FIGURE 11 Adjusting Wheelbase Length (Adjusting Center Of Gravity). Invacare® A-4® Wheelchair Part No 1110545...

  • Page 59: Adjusting Wheelbase Width

    DO NOT close the quick-release levers or tighten the socket screws or hex screws without camber inserts in the axle tube. Damage to the axle tube will occur. Close the camber clamp.Refer to Opening/Closing Camber Clamps on page 46. Part No 1110545 Invacare® A-4® Wheelchair...

  • Page 60: Replacing Axle Tube

    Slide the new axle tube through one of the camber clamps. Make sure the notches in the axle tube are towards the rear of the wheelchair and the slots in the axle tube are facing up. Invacare® A-4® Wheelchair Part No 1110545...
  • Page 61 The performance of the wheelchair will be affected if the axle tube has not been adjusted to correct the toe in/toe out of  the wheelchair. 14. Ensure the camber clamps are closed. Refer to Opening/Closing Camber Clamps on page 46 Part No 1110545 Invacare® A-4® Wheelchair...
  • Page 62 7 FRAME Rear of Notch in Axle Tube Wheelchair Slot in Axle Tube Toe Adjustment Ring Camber Insert Axle Tube Camber Clamp Camber Clamp Set Screw Indexing Ring Camber Insert FIGURE 13 Replacing Axle Tube Invacare® A-4® Wheelchair Part No 1110545...

  • Page 63: Wheels

    Adjusting Quick- Release Axle on page 64 or Removing The Play From The Rear Wheels on page 66. Part No 1110545 Invacare® A-4® Wheelchair...

  • Page 64: Adjusting Quick- Release Axle

    Insert new quad-release axle through rear wheel hub. Slide locking collar onto quad-release axle until it is snug against rear wheel and tighten securely with allen screw. Reinstall rear wheel and the quad-release axle onto the wheelchair. Invacare® A-4® Wheelchair Part No 1110545...

  • Page 65: Adjusting The Quad-Release Handle

    If the quad-release handle is not releasing the locking pins completely, rotate the quad-release handle approximately one-quarter ( ) turn clockwise. • If the quad-release handle hits the spokes of the rear wheel when assembled, rotate the quad-release handle approximately one-quarter ) turn counterclockwise. Part No 1110545 Invacare® A-4® Wheelchair...

  • Page 66: Removing The Play From The Rear Wheels

    With the rear wheel and quad-release axle still mounted onto the wheelchair, tighten the length adjusting screw until there is no in and out movement of the quad-release axle and rear wheel. Length Adjustment Screw FIGURE 5 Removing The Play From The Rear Wheels Invacare® A-4® Wheelchair Part No 1110545...

  • Page 67: Handrim Replacement

    Make sure detent pin is fully released before operating the wheelchair. Reinstall rear wheel to the wheelchair. FIGURE 6 Handrim Replacement Repeat STEPS 1-8 for the remaining rear wheel if necessary. Repeat the procedure for the opposite rear wheel if necessary. Part No 1110545 Invacare® A-4® Wheelchair...

  • Page 68: Wheel Lock Adjustment/Replacement

    Wheel Lock Adjustment/Replacement  Invacare recommends under mount wheels locks when engaging in any contact sport. Before adjusting or replacing the High/Under mount wheel locks, ensure that the tires are inflated to the recommended psi on the sidewall of the tire.

  • Page 69: Replacing/Adjusting Casters

    Both casters should be the same size. Non-suspension casters cannot be adjusted as they mount in one position only. Remove the bolt and locknut that secure the front caster to the fork. Remove front caster and axle spacers from fork. Part No 1110545 Invacare® A-4® Wheelchair...
  • Page 70 Fork Suspension Non Suspension Bolt Axle Spacer Axle Spacer Middle Middle Caster NOTE: Only non-suspension short fork style shown for clarity. All Bottom Bottom fork styles install in the same way. FIGURE 8 Replacing/Adjusting Casters Invacare® A-4® Wheelchair Part No 1110545...

  • Page 71: Replacing Forks

    Let casters drop to bottom of arc (wheels should swing once to one-side, then immediately rest in a straight downward position). D. Adjust locknuts according to freedom of caster swing. FIGURE 9 Replacing Forks Test wheelchair for maneuverability. Part No 1110545 Invacare® A-4® Wheelchair...

  • Page 72: Adjusting Caster Height

    Adjust the height of the casters by either adding or removing washers/spacers on top of the fork stem until the wheelchair frame is parallel with the floor. Reinstall the locknut and head tube cap onto the wheelchair. Repeat this procedure for the opposite front caster. Invacare® A-4® Wheelchair Part No 1110545...

  • Page 73: Adjusting Front Seat-To-Floor Height

    To determine frame size, measure from the bottom of the caster headtube to the top of the seat rail at the edge of the seat upholstery. Refer to the chart to determine the frame size. LENGTH (INCHES FRAME SIZE FIGURE 11 Determining Frame Size Part No 1110545 Invacare® A-4® Wheelchair...

  • Page 74: Front Seat-To-Floor Height Adjustment

    Ensure wheel locks engage properly. Refer to Wheel Lock Adjustment/Replacement on page 68. SHORT FORK LONG NON SUSPENSION FORK LONG SUSPENSION FORK NON SUSPENSION ONLY Middle Middle Bottom Bottom FIGURE 12 Front Seat-to-floor Height Adjustment Invacare® A-4® Wheelchair Part No 1110545...
  • Page 75 Short N/A 17 inches 26 inch 5 inch Short N/A 17 inches 24 inch 6 inch Short N/A 18 inches 24 inch 3 inch Long Middle 18 inches 26 inch 3 inch Long Middle Part No 1110545 Invacare® A-4® Wheelchair...
  • Page 76 Short N/a 18 inches 26 inch 5 inch Long Middle 18 inches 26 inch 6 inch Long Bottom  A 17 inch front seat-to-floor height is not available for wheelchairs with the suspension option. Invacare® A-4® Wheelchair Part No 1110545...
  • Page 77 Short N/A 18 inches 22 inch 5 inch Short N/A 18 inches 24 inch 5 inch Short N/A 18 inches 26 inch 5 inch Short N/A 18 inches 24 inch 6 inch Long - Top Part No 1110545 Invacare® A-4® Wheelchair...
  • Page 78 19 inches 26 inch 5 inch Long - Middle 19 inches 26 inch 6 inch Long - Bottom  A 17 inch front seat-to-floor height is not available for wheelchairs with the suspension option. Invacare® A-4® Wheelchair Part No 1110545...
  • Page 79 Short N/A 19 inches 22 inch 5 inch Short N/A 19 inches 24 inch 5 inch Short N/A 19 inches 26 inch 5 inch Short N/A 19 inches 24 inch 6 inch Long - Top Part No 1110545 Invacare® A-4® Wheelchair...
  • Page 80 20 inches 24 inch 5 inch Long - Middle 20 inches 26 inch 5 inch Short N/A 20 inches 26 inch 5 inch Long - Middle 20 inches 26 inch 6 inch Long - Bottom Invacare® A-4® Wheelchair Part No 1110545...
  • Page 81 Short N/A 20 inches 22 inch 5 inch Short N/A 20 inches 24 inch 5 inch Short N/A 20 inches 26 inch 5 inch Short N/A 20 inches 24 inch 6 inch Long - Top Part No 1110545 Invacare® A-4® Wheelchair...
  • Page 82 21 inches 24 inch 5 inch Long - Middle 21 inches 26 inch 5 inch Short N/A 21 inches 26 inch 5 inch Long - Middle 21 inches 26 inch 6 inch Long - Bottom Invacare® A-4® Wheelchair Part No 1110545...
  • Page 83 Short N/A 21 inches 22 inch 5 inch Short N/A 21 inches 24 inch 5 inch Short N/A 21 inches 26 inch 5 inch Short N/A 21 inches 24 inch 6 inch Long - Top Part No 1110545 Invacare® A-4® Wheelchair...
  • Page 84 22 inches 24 inch 5 inch Long - Middle 22 inches 26 inch 5 inch Short N/A 22 inches 26 inch 5 inch Long - Middle 22 inches 26 inch 6 inch Long - Bottom Invacare® A-4® Wheelchair Part No 1110545...

  • Page 85: Footrest

    Footplate Depth Adjustment Note the height of the footrest and the angle of the footplate for reinstallation. Loosen, but do not remove the two allen screws securing the footrest tubes to the wheelchair frame. Part No 1110545 Invacare® A-4® Wheelchair...
  • Page 86 10. Adjust the footrest tubes to the height noted in STEP 1. Washer 11. Tighten the two allen screws to secure the footrest tubes to the wheelchair frame. Locknut Depth Mounting Positions FIGURE 1 Replacing the Footrest/Footplate Angle Adjustment/Footplate Depth Adjustment Invacare® A-4® Wheelchair Part No 1110545...

  • Page 87: Anti-Tipper

    Anti-tippers must be attached at all times. Inasmuch as the anti-tippers are an option on this wheelchair (You may order it with or without the anti-tippers), Invacare strongly recommends ordering the anti-tippers as an additional safeguard for the wheelchair user.

  • Page 88: Anti-Tipper Replacement

    Measure the distance between the bottom of the anti-tipper wheels and the ground floor. If necessary, adjust the height of the anti-tippers. Refer to Anti-tipper Adjustment on page 87. PART NUMBER MEASUREMENT 1112178 inches Invacare® A-4® Wheelchair Part No 1110545...
  • Page 89 10 ANTI-TIPPER DETAIL “A” - ANTI TIPPER DETAIL “B” ADJUSTMENT HOLES Anti-Tipper Top Adjustment Hole Ground/Floor to 2 inch clearance Hole Camber Clamp See Details “A” and “B” Anti-Tipper Socket FIGURE 1 Anti-tipper Replacement Part No 1110545 Invacare® A-4® Wheelchair...

  • Page 90: Arms

    Repeat STEPS 2-6 for the opposite side of the wheelchair. Install the T-arms into the T-arm sockets. Refer to Removing/ Installing Rear Wheels on page 63. FIGURE 1 Installing The T-arm Sockets Invacare® A-4® Wheelchair Part No 1110545...

  • Page 91: Installing/Removing T-Arms

    If the T-arm does not slide in the T-arm socket as  T-arm socket desired, adjust the T-arm socket. Refer to Adjusting The T- Arms on page 92. Socket Screw Outer T- Arm Bracket Repeat for opposite side of the wheelchair. FIGURE 2 Installing/Removing T-arms Part No 1110545 Invacare® A-4® Wheelchair...

  • Page 92: Adjusting The T- Arms

    Lock the T-arm by flipping the T-arm release lever towards the front of the wheelchair. Inside T-Arm Post T-Arm Release Lever - Unlocked Position T-Arm Release Lever - Locked Position Set Screws Outside T-Arm Post FIGURE 3 Adjusting The T- Arms - Height Invacare® A-4® Wheelchair Part No 1110545...
  • Page 93 Full Length Arms - to one of five positions depending on the desired arm pad depth.  Additional positions are obtainable by turning the arm tube 180°. Re-secure the arm tube to the T-arm post with the two socket screws. Torque to 60-70 in./lbs. Part No 1110545 Invacare® A-4® Wheelchair...

  • Page 94: Adjusting T-Arm Sockets

    Loosen, but do not remove the four socket screws and washers that secure outer T-arm bracket to the inner T- arm bracket.  The T-arm socket will disassemble if the four socket screws and washers are removed. Invacare® A-4® Wheelchair Part No 1110545...
  • Page 95 If necessary, install rear wheels. Refer to Removing/Installing Rear Wheels on page 63. T-Arm Inner T-Arm Bracket Socket Screws and Washers Socket Screws and Washers Locking Lever Outer T-Arm Bracket Slot FIGURE 6 Adjusting T-Arm Sockets Part No 1110545 Invacare® A-4® Wheelchair...

  • Page 96: Adjusting T-Arm Transfer Assists And/Or Side Guards

    The locking lever is spring loaded. Place your free hand over the locking lever to prevent the parts from springing off of the bottom bracket, otherwise parts may be lost or injury may occur. Remove existing locking lever and spring from bottom bracket. Invacare® A-4® Wheelchair Part No 1110545...
  • Page 97 DO NOT overtighten locknut that secures locking lever to bottom bracket. Overtightening this locknut will prevent locking lever from operating properly, possibly causing injury. Install mounting screw and tighten securely with locknut. Install the T-arm onto the wheelchair. Refer to Installing/Removing T-arms on page 91. Part No 1110545 Invacare® A-4® Wheelchair...

  • Page 98: Installing The Half Arm Socket

    Install top hex screw through the slot in the arm socket, top coved washer, wheelchair frame, and washer and loosely tighten with locknut. Slide the arm socket up and/or down until the bottom mounting hole in the arm socket is in line with the mounting hole in the wheelchair frame. Invacare® A-4® Wheelchair Part No 1110545...
  • Page 99 Repeat STEPS 1-7 for the opposite arm socket. Top Mounting Hole Half Arm Slot Top Hex Screw Socket Top Coved Washer Bottom Hex Screw Bottom Coved Washer Wheelchair Frame Locknut Washer FIGURE 9 Installing The Half Arm Socket Part No 1110545 Invacare® A-4® Wheelchair...

  • Page 100: Adjusting Half Arm Height

    Retighten the hex screw and washer to the arm socket with the remaining washer and locknut. Reinstall the half arm into the arm socket. Washer Repeat STEPS 1-5 for the opposite side, if necessary. Washer Hex Screw Arm Socket FIGURE 10 Adjusting Half Arm Height Invacare® A-4® Wheelchair Part No 1110545...

  • Page 101: Suspension

    Install the outer allen screw into the pivot pin. Use an allen wrench to hold the outer allen screw in position. 10. While holding the outer allen screw, install the inner allen screw into the pivot pin. Tighten securely. Part No 1110545 Invacare® A-4® Wheelchair...

  • Page 102: Replacing Front Elastomers

    Using two allen wrenches, turn mounting screws in opposite directions and remove one mounting screw from fork.  One mounting screw will not turn. Remove the threaded sleeve and mounting screw assembly from the fork. DO NOT use excessive force. Invacare® A-4® Wheelchair Part No 1110545...
  • Page 103 Apply Loctite 242 to the mounting screw. Reinstall the mounting screw into the threaded sleeve and tighten securely. Upper Portion of Fork Mounting Screw (Use Loctite 242) Lower Portion of Fork Elastomer Mounting Screw Threaded Sleeve FIGURE 2 Replacing Front Elastomers Part No 1110545 Invacare® A-4® Wheelchair...
  • Page 104 Invacare Corporation Canada One Invacare Way 570 Matheson Blvd E Unit 8 Elyria, Ohio USA Mississauga Ontario 44036-2125 L4Z 4G4 Canada 800-333-6900 800-668-5324 Part No 1110545 Rev F - 10/10 www.invacare.com...

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