Invacare Adjustable ASBA Seat Service Manual
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Invacare Adjustable ASBA Seat Service Manual

Invacare Adjustable ASBA Seat Service Manual

Adult seats junior seat
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Service Manual

Adjustable ASBA Seat

Adult Seats
Junior Seat
DEALER: Keep this manual. The
procedures in this manual MUST be
performed by a qualified technician.
For more information regarding
Invacare products, parts, and services,
please visit www.invacare.com

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Summary of Contents for Invacare Adjustable ASBA Seat

  • Page 1: Adjustable Asba Seat

    Service Manual Adjustable ASBA Seat Adult Seats Junior Seat DEALER: Keep this manual. The procedures in this manual MUST be performed by a qualified technician. For more information regarding Invacare products, parts, and services, please visit www.invacare.com...

  • Page 2: Useful Terms

    DAMAGE MAY RESULT. WARNING Invacare products are specifically designed and manufactured for use in conjunction with Invacare accessories. Accessories designed by other manufacturers have not been tested by Invacare and are not recommended for use with Invacare products. USEFUL TERMS The following acronyms are used throughout this manual: ACRONYM...

  • Page 3: Table Of Contents

    LABEL LOCATIONS ... 9 All Wheelchairs...9 All Wheelchairs with TRRO ...9 Wheelchairs without TRRO ...9 TYPICAL PRODUCT PARAMETERS ... 10 Adjustable ASBA Seat...10 SECTION 1—GENERAL GUIDELINES ... 11 Repair or Service Information ...11 Operation Information ...11 Tire Pressure ...12 Weight Limitation...12 SECTION 2—SAFETY/HANDLING OF WHEELCHAIRS ...
  • Page 4 Adjusting the Length for Power Legrest ...39 Removing/Installing the Power Elevating Legrest Harness ...40 Removing ...40 Installing...40 Removing/Installing the Power Elevating Legrest Actuator...41 Removing ...41 Installing...42 SECTION 8—ARMS ... 43 Installing/Removing Flip Back Armrests ...43 Installing...43 Adjustable ASBA Seat Part No 1143238...
  • Page 5 Adjusting the Back Angle ...55 Adjusting the Back Height ...57 Removing/Installing the Back Canes...58 Removing/Installing the Spreader Bar ...59 Removing ...59 Installing...59 Adjusting Spreader Bar Width ...60 SECTION 11—ADULT SEATS ... 61 Removing/Installing the Seat Pan...61 Removing ...61 Part No 1143238 Adjustable ASBA Seat...
  • Page 6 Adjusting the Seat Depth...65 Removing/Installing Side Rails ...66 Removing Side Rails...66 Installing Side Rails ...67 SECTION 12—JUNIOR SEATS ... 68 Removing/Installing the Seat Pan...68 Adjusting the Seat Width...72 Adjusting the Seat Depth...74 LIMITED WARRANTY ... 76 Adjustable ASBA Seat Part No 1143238...

  • Page 7: Special Notes

    It is Invacare’s position that users of wheelchairs should be transferred into appropriate seating in vehicles for transportation and use be made of the restraints made available by the auto industry.
  • Page 8 Wheelchairs should be examined during maintenance for signs of corrosion (water exposure, incontinence, etc.). Electrical components damaged by corrosion should be replaced IMMEDIATELY. Wheelchairs that are used by incontinent users and/or are frequently exposed to water may require replacement of electrical components more frequently. Adjustable ASBA Seat Part No 1143238...

  • Page 9: Label Locations

    Wheelchairs without TRRO NOTE: Auto style seat  positioning strap shown. This  label is also on the airline style  seat positioning strap. Part No 1143238 WA R N I N G Refer to Service Manual to reposition the seat - otherwise serious personal injury and damage will result. P/N 1114823 Adjustable ASBA Seat Rev B - 5/10/06...

  • Page 10: Typical Product Parameters

    TYPICAL PRODUCT PARAMETERS Adjustable ASBA Seat SEAT WIDTH RANGE: SEAT DEPTH RANGE (1-INCH INCREMENTS): BACK HEIGHT RANGE: BACK ANGLE RANGE: *SEAT WEIGHT: ARMRESTS: WHEELCHAIR UPHOLSTERY OPTIONS: FRONT RIGGINGS: FOOTRESTS: SEAT TILT ANGLE ADJUSTMENT: SEAT CUSHION: **WEIGHT LIMITATION: NOTE: All dimensions are ± .50 inches unless otherwise indicated. *NOTE: Adult seat weight based on 18 X 18‐inch seat frame. Junior seat weight based on  12 X 12‐inch seat frame.

  • Page 11: Section 1-General Guidelines

    Repair or Service Information Except for programming, DO NOT service or adjust the wheelchair while occupied,  unless otherwise noted. Before performing any maintenance, adjustments or service, ALWAYS turn the  wheelchair power Off, otherwise injury or damage may result. TRANSPORT READY PACKAGES ARE NOT RETROFITTABLE TO EXISTING  MODELS AND ARE NOT FIELD SERVICEABLE. Wheelchairs should be examined during maintenance for signs of corrosion (water  exposure, incontinence, etc.). Electrical components damaged by corrosion should be  replaced IMMEDIATELY. Wheelchairs that are used by incontinent users and/or are frequently exposed to water  may require replacement of electrical components more frequently. DO NOT overtighten hardware attaching to the frame. This could cause damage to the  frame tubing. Operation Information Performance adjustments should only be made by professionals of the healthcare field or  persons fully conversant with this process and the driverʹs capabilities. Incorrect settings  could cause injury to the driver, bystanders, damage to the wheelchair and to  surrounding property. After the wheelchair has been set‐up/adjusted, check to make sure that the wheelchair  performs to the specifications entered during the set‐up procedure. If the wheelchair does  not perform to specifications, turn the wheelchair off IMMEDIATELY and re‐enter set‐up  specifications. Repeat this section until the wheelchair performs to specifications. Avoid storing or using the wheelchair near open flame or combustible products. Serious  injury or damage to property may result. DO NOT attempt to lift the wheelchair by 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 1143238 Adjustable ASBA Seat...

  • Page 12: Tire Pressure

    SECTION 1—GENERAL GUIDELINES ALWAYS keep hands and fingers clear of moving parts to avoid injury. NEVER leave an unoccupied wheelchair unattended on an incline. DO NOT engage or disengage the motor locks until the power is in the off position. DO NOT tip the wheelchair without assistance. Tire Pressure Ensure the wheelchair has the proper tire pressure (P.S.I.) before use. DO NOT overinflate  the tires. Failure to follow these recommendations may cause the tire to explode and  cause bodily harm. The recommended tire pressure is listed on the side wall of the tire. Weight Limitation Refer to Typical Product Parameters on page 10 and the wheelchair base owner’s manual  to determine the weight limit (total combined weight of user and any attachments) of  your wheelchair and seat. The lowest indicated weight limitation for any part of your  wheelchair overrides the weight limitation of the wheelchair parts by themselves. DO  NOT exceed the limit ‐ otherwise, injury or damage may result. Adjustable ASBA Seat Part No 1143238...

  • Page 13: Section 2-Safety/Handling Of Wheelchairs

    TDX and TDX SP Wheelchairs Only - Pinch points exist between the headtube cap and walking beam. NOTE: For this procedure, refer to FIGURE 2.1. Part No 1143238 WARNING TDX Wheelchairs Walking Beam Pinch Point Headtube Cap (Not Shown) Front Caster FIGURE 2.1 Pinch Points Adjustable ASBA Seat...

  • Page 14: Section 3-Emi Information

    AM/FM radios, TV sets, CD players, cassette players, and small appliances, such as elec- tric shavers and hair dryers, so far as we know, are not likely to cause EMI problems to your powered wheelchair. Adjustable ASBA Seat WARNING Part No 1143238...
  • Page 15 2) This device has been tested to a radiated immunity level of 20 volts per meter. 3) The immunity level of the product is unknown. Modification of any kind to the electronics of this wheelchair as manufactured by Invacare may adversely affect the EMI immunity levels. Part No 1143238 WARNING...

  • Page 16: Section 4-Safety Inspection/ Troubleshooting

    NOTE: Refer to the wheelchair base service manual for a complete safety inspection checklist for  the base.  Inspect all fasteners.  Inspect TRRO/TRBKTS fasteners and hardware.  Ensure clothing guards are secure.  Arms are secure but easy to release and adjustment levers engage properly.  Adjustable height arms operate and lock securely.  Upholstery has no rips.  Armrest pad sits flush against arm tube.  Check that all labels are present and legible. Replace if necessary.  Clean upholstery and armrests.  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.  Inspect foam handgrips for damage. If damaged, have them replaced by a qualified  technician.  Check that all labels are present and legible. Replace if necessary.  Inspect electrical components for signs of corrosion. Replace if corroded or damaged. Troubleshooting NOTE: Refer to the wheelchair base service manual and electronics manual for complete  mechanical and electrical troubleshooting guides for the base and an explanation of error codes. Adjustable ASBA Seat Part No 1143238...

  • Page 17: Section 5-Center Mount Footrests

    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, adjustments or service, ALWAYS turn the wheelchair power off, otherwise injury or damage may result. NOTE: For complete operating information on Invacare footrests, refer to the appropriate ownerʹs  manual listed in Reference Documents on page 2. Part No 1143238 Adjustable ASBA Seat...

  • Page 18: Removing/Installing The Manual Center Mount Footrest

    BEFORE 12/01/2008 Center Mount Footrest DETAIL “B” - CHAIRS BUILT AFTER 12/01/2008 Seat Frame Mounting Bracket Center Mount Footrest FIGURE 5.1 Removing/Installing the Manual Center Mount Footrest Adjustable ASBA Seat Release Lever Mounting Bracket Rigging Pivot Pin NOTE: Release Lever  located towards the front or  center of seat frame.

  • Page 19: Adjusting The Height Of The Manual Center Mount Footrest

    5. Repeat STEPS 1‐3 for the other extension tube. Mounting Holes Mounting Screws FIGURE 5.2 Adjusting the Height of the Manual Center Mount Footrest - Part No 1143238 WARNING Seat Frame Mounting Holes Chairs built before 12/01/2008 Release Lever Extension Tube Housing Footrest Extension Tube Adjustable ASBA Seat...

  • Page 20: Chairs Built After 12/01/2008

    2. Adjust the footrest extension tube to the desired height. 3. Secure the extension tube to the desired height with the button head cleat and  mounting screws. Securely tighten. 4. Repeat STEPS 1‐3 for the other extension tube. Button Head Cleat Mounting Screws FIGURE 5.3 Adjusting the Height of the Manual Center Mount Footrest - Adjustable ASBA Seat WARNING Extension Housing Extension Tube Mounting Holes Extension Tube Chairs built after 12/01/2008...

  • Page 21: Adjusting The Angle Of The Manual Center Mount Footrest

    DETAIL “A” - CHAIRS BUILT BEFORE 12/01/2008 Center Mount Footrest DETAIL “B” - CHAIRS BUILT AFTER 12/01/2008 Center Mount Footrest FIGURE 5.4 Adjusting the Angle of the Manual Center Mount Footrest Part No 1143238 WARNING Footplate Footplate Adjustable ASBA Seat...

  • Page 22: Adjusting The Footplate Angle

    Chairs built after 12/01/2008 NOTE: For this procedure, refer to FIGURE 5.6. 1. Flip footplate up. 2. Screw the adjustment screw in or out until the desired angle is achieved. 3. Repeat STEPS 1 and 2 for the other footplate. Center Mount Footrest Footplate (shown away from Extension Tube) Adjustment Screw FIGURE 5.6 Adjusting the Footplate Angle - Chairs built after 12/01/2008 Adjustable ASBA Seat Part No 1143238...

  • Page 23: Adjusting The Tension Of The Flip Up Footplate

    FIGURE 5.7 Adjusting the Tension of the Flip Up Footplate - Chairs built before 12/01/2008 Center Mount Footrest Mounting Screw FIGURE 5.8 Adjusting the Tension of the Flip Up Footplate - Chairs built after 12/01/2008 Adjustable ASBA Seat Footplate Footplate...

  • Page 24: Section 6-Front Riggings

    2. Install the hinge plates on the footrest  onto the hinge pins on the wheelchair  frame. 3. Push the footrest towards the inside of  the wheelchair until it locks into place. NOTE: The footplate will be on the inside of the  wheelchair when locked in place. 4. Repeat STEPS 1‐3 for other footrest assembly. 5. To remove the footrest, push the footrest release lever inward, rotate footrest outward. 6. Adjust footrest height if desired. Refer to Adjusting the Footrest Height on page 25. Adjustable ASBA Seat WARNING Hinge Pins Hinge Plate Footrest FIGURE 6.1 Installing/Removing Footrests - PH904A, PHAL4A, 70° and PW93 Footrest Release Lever Part No 1143238...

  • Page 25: 70° Taper

    Part No 1143238 Footrest Mounting Pin Mounting Tube Footplate FIGURE 6.2 Installing/Removing Footrests - 70° Taper WARNING NOTE: PH904A style front rigging  shown. PHAL4A front rigging adjust  the same way. Footrest Support Lug Bolt FIGURE 6.3 Adjusting the Footrest Height Footrest Release Lever Locknut Lower Footrest Adjustable ASBA Seat...

  • Page 26: 70° And Pw93

    Removing Footrests on page 24. NOTE: Lay the assembly on a flat surface to  improve access to the hardware. NOTE: Note the position of the coved spacers  before disassembly. 3. Remove the mounting screw and coved spacer that secures the lower footrest  assembly. 4. Position the footrest assembly to the desired height. 5. Secure lower footrest assembly with existing mounting screw and coved spacer.  Securely tighten. Adjustable ASBA Seat Footrest Support Locknut Coved Mounting Screw Washer FIGURE 6.4 Adjusting the Footrest Height - 70° and PW93 Coved Spacer Mounting Screw Footrest FIGURE 6.5 Adjusting the Footrest Height...

  • Page 27: Replacing Heel Loops

    • Lowering ‐ Support front rigging  with one hand away from the  release lever. Push release lever  downward with other hand. Part No 1143238 CAUTION Locknut Coved Washer Lower Footrest FIGURE 6.6 Replacing Heel Loops FIGURE 6.7 Raising/Lowering Elevating Front Riggings Footrest Support Hex Bolt Phillips Bolt Spacer Heel Loop Locknut Release Lever Adjustable ASBA Seat...

  • Page 28: Adjusting/Replacing Telescoping Front Rigging Support

    2. Perform one of the following: • Slide existing telescoping front rigging support to one of six depth positions. • Remove existing telescoping front rigging. 3. Secure the telescoping front tube to the side rail at the desired depth with the existing  two cap screws, spacers and threaded blocks. 4. Repeat STEPS 1 to 3 on the opposite side if desired. Side Rail Cap Screws FIGURE 6.8 Adjusting/Replacing Telescoping Front Rigging Support Adjustable ASBA Seat WARNING Side Rail Spacers Threaded Blocks Spacers Cap Screws Telescoping Front Tube Part No 1143238...

  • Page 29: Installing Adjustable Angle Flip-Up Footplate Hinge

    FIGURE 6.9 Installing Adjustable Angle Flip-up Footplate Hinge 90° Footrest Support Flat Screw Footplate Half Clamp Washer Locknut Half Clamp FIGURE 6.10 Installing Adjustable Angle Flip-up Footplates Adjustable ASBA Seat Washers Footrest Support Footplate Hinge Nylon Adjustment Screw Footplate Hinge...

  • Page 30: Adjusting Adjustable Angle Flip-Up Footplates

    NOTE: It is not necessary to remove the  footplate to perform this adjustment. 1. Insert a flathead screwdriver through  the half clamp on the footplate  (FIGURE 6.10). 2. Slowly turn nylon adjustment screw in  or out until footplate is perpendicular  to the footrest assembly or the desired  inversion or eversion is obtained  (FIGURE 6.12). Adjustable ASBA Seat Footrest Support Footplate FIGURE 6.11 Angle Adjustment Front View of Footplate and Footrest Support Footrest Support Footplate FIGURE 6.12 Perpendicular and/or Inversion/Eversion Adjustment...

  • Page 31: Replacing Composite/Articulating Footplate Heel Loop

    Articulating 1. Remove the two mounting screws,  washers and spacers that secure the  heel loop to the articulating footplate. Part No 1143238 Composite Cane of Footrest Assembly Articulating Mounting Screw Washer Spacer Heel Loop Articulating Footplate FIGURE 6.13 Replacing Composite/ Articulating Footplate Heel Loop Adjustable ASBA Seat Mounting Screw Spacer Composite Footplate Locknut...

  • Page 32: Installing/Removing Elevating Legrests

    5. After the user is seated in wheelchair,  adjust footplate to correct height by  loosening nut and sliding the lower  footrest assembly up or down until  desired height is achieved. Removing 1. Push the legrest release handle toward  the inside of the wheelchair (facing the  front of the wheelchair).  2. Swing the legrest to the outside of the  wheelchair. 3. Lift up on the legrest and remove from  the wheelchair. 4. Repeat STEPS 1‐2 for opposite side of  wheelchair. Adjustable ASBA Seat Hinge Pins Hinge Plates Legrest Release Handle Bolt/Nut FIGURE 6.14 Installing/Removing Elevating Legrests Calfpad Legrest Part No 1143238...

  • Page 33: Raising/Lowering Elevating Legrests And/Or Adjusting Calfpads

    • Lowering ‐ Support leg with one  hand and push release lever  downward with other hand. Adjusting Calfpads 1. Turn the calfpad towards the outside of  the wheelchair. 2. Slide the calfpad up or down until the  desired position is obtained. NOTE: If one of the top two calfpad adjustment positions is being used, the legrest will need to be  raised to avoid interference with the front stabilizers while going over obstacles or going up and  down ramps. Refer to Raising/Lowering Elevating Legrests on page 33. 3. Turn the calfpad towards the inside of the wheelchair. Part No 1143238 Legrest to Normal Position Adjust Calfpad FIGURE 6.15 Raising/Lowering Elevating Legrests and/or Adjusting Calfpads Adjustable ASBA Seat Secure Calfpad...

  • Page 34: Section 7-Power Elevating Legrests

    Otherwise damage to the power legrests may occur. NOTE: For this procedure, refer to FIGURE 7.1 on page 35. Installing the Power Elevating Legrests 1. Turn power legrest to side (open footplate is perpendicular to wheelchair) and align  the mounting pin on the legrest with mounting hole in the hanger assembly  (Detail “A”). 2. Insert the mounting pin of power legrest into the mounting hole of the hanger  assembly (Detail “A”). NOTE: Make sure the legrest sits flush on the hanger assembly. 3. Rotate the power legs toward the inside of the wheelchair until it locks in place. NOTE: The footplate will be on the inside of the wheelchair when locked in place. 4. Repeat STEPS 1‐3 for the opposite legrest. 5. Connect power legrest connector to the harness (Detail “B”). Adjustable ASBA Seat WARNING WARNING CAUTION Part No 1143238...

  • Page 35: Removing The Power Elevating Legrests

    DO NOT remove heel loops without providing some other adequate means of support. Otherwise personal injury may occur. Adjusting the Footplate Height NOTE: For this procedure, refer to FIGURE 7.2 on page 36. NOTE: The following procedure should be performed with the user in the wheelchair. NOTE: T‐nuts ride in the channels of the exterior/interior rails of the power legrests. Refer to  FIGURE 7.2. 1. Loosen, but DO NOT remove, the two interior button screws that secure the footplate  assembly to the T‐nuts. Part No 1143238 DETAIL “B” Calf Pad Jumper Cable Footplate Power Legrest Connector WARNING Adjustable ASBA Seat...
  • Page 36 2. Reposition the footplate on the  footplate clamp. 3. Align the desired depth adjustment  holes on the footplate to the mounting  holes on the footplate clamp. 4. Insert the barrel nuts through the bottom of the footplate clamp. 5. Install the two flat head screws through the footplate and footplate clamp. 6. Securely tighten with two barrel nuts. 7. Repeat STEPS 1‐6 for opposite footplate if necessary. Adjustable ASBA Seat Exterior Rail Exterior Rail Channel T-Nuts (NOT SHOWN) Footplate Footplate Assembly Assembly Flat Head Screws Mounting Holes FIGURE 7.3 Adjusting the Footplate Depth...
  • Page 37 B. Rotate footplate up or down to desired position. C. Retighten set screw. DETAIL “A” Flat Head Screws DETAIL “C” FIGURE 7.4 Adjusting the Footplate Angle Part No 1143238 Footplate Footplate Clamp Footplate Barrel Nuts Clamp Direction of Rotation Set Screw DETAIL “B” Footplate Pivot Hinge Adjustable ASBA Seat...

  • Page 38: Adjusting The Calf Pad

    3. Remove the flat head socket screw, and  locking hex nut that secure the calf  bracket to the depth adjustment  bracket. 4. Reposition the calf bracket on the depth  adjustment bracket to desired position. 5. Install the flat head socket screw  through the calf bracket, depth  adjustment bracket and locking hex  nut. 6. Tighten locking hex nut to screw until snug. DO NOT overtighten nut or calf pad will  not pivot properly.  Adjustable ASBA Seat Back View of Legrest Calf Pad Flat Head Socket Screw Locking Adjustment Calf Bracket NOTE: Calf pad not shown for clarity. FIGURE 7.6 Adjusting the Calf Pad Depth...

  • Page 39: Adjusting The Length For Power Legrest

    Part No 1143238 Hex Head Screws (T-Nuts are not shown) FIGURE 7.7 Adjusting the Calf Pad Height Button Screw FIGURE 7.8 Adjusting the Length for Power Legrest Adjustable ASBA Seat Depth Adjustment Bracket Channel Outer Rail NOTE: Length adjustment is  from 15½ ‐ 20  inches. Outer...

  • Page 40: Removing/Installing The Power Elevating Legrest Harness

    3. Cut the tie‐wrap securing the harness to the rear harness wire bracket. 4. Remove the two cap screws and locknuts securing the harness connector to the front  harness wire bracket. Installing 1. If power legrests were not previously installed, perform the following steps: A. Remove the hex screw and washer securing the front of the rear arm socket to the  seat frame. B. Install the rear harness wire bracket onto the front mounting hole on the rear arm  socket using the hex screw. NOTE: The hex screw will install into the T‐nut in the seat frame. C. Install the hex screw through the washer and front harness wire bracket and into  the T‐nut in the seat frame. D. Repeat STEPS A‐C for the opposite side of the wheelchair. 2. Secure the power elevating legrest connector to the front harness wire bracket using  the two cap screws and locknuts. 3. Tie‐wrap the harness to the rear harness wire bracket (Detail “A”). 4. Plug the harness into the TRECM or DLIAM. 5. Repeat STEPS 2‐4 for the opposite side of the wheelchair. 6. Install the power elevating legrests. Refer to Installing/Removing the Power Elevating  Legrests on page 34. Adjustable ASBA Seat Part No 1143238...

  • Page 41: Removing/Installing The Power Elevating Legrest Actuator

    1. Remove the power elevating legrest from the wheelchair. Refer to Installing/ Removing the Power Elevating Legrests on page 34. 2. Disconnect the actuator connector (not shown) from the TRECM or DLIAM connector  (not shown). 3. Remove the long shoulder screw, flat washer, washer and locknut securing the top of  the power elevating legrest actuator to the power legrest bracket. Part No 1143238 T-nut Locknuts Front Harness Wire Bracket Harness Hex Screw Cap Screws DETAIL “B” Jumper Cable Power Legrest Connector NOTE: T‐nuts shown  exploded away from  seat frame for clarity. Seat Frame T-Nut Washer Adjustable ASBA Seat...

  • Page 42: Installing

    Long Shoulder Screw Flat Washer Inside of Legrest Power Elevating Legrest Actuator Actuator Rod Short Shoulder Screw Actuator Bracket FIGURE 7.10 Removing/Installing the Power Elevating Legrest Actuator Adjustable ASBA Seat Locknut Washer Outside of Legrest Locknut NOTE: Rear of  right power  elevating legrest  shown. Left ...

  • Page 43: Section 8-Arms

    Part No 1143238 WARNING WARNING Flip Back Armrest Rear Socket Quick- Release Pin Front Arm Socket FIGURE 8.1 Installing/Removing Flip Back Armrests Flip Back Locked Armrest (Down - Release Vertical) Lever Unlocked (Up - Horizontal) Seat Frame Adjustable ASBA Seat...

  • Page 44: Adjusting Flip Back Armrests

    2. Install the flip back armrest into the front arm socket. 3. Lock flip back armrest by pressing flip back armrest release lever into the down  (vertical) position. 4. Lift up on flip back armrest to make sure the armrest is locked in place. 5. Repeat STEPS 1‐4 for opposite flip back armrest, if necessary. Adjusting 1. Unlock flip back armrest by pulling height adjustment lever into the up (horizontal)  position. 2. Adjust the flip back armrest to the desired height. 3. Lock flip back armrest by pushing height adjustment lever into the down (vertical)  position. Adjustable ASBA Seat WARNING Locked (Down - Vertical) Height Flip Back Armrest Adjustment Release Lever Lever Flip Back Armrest Front Arm Socket FIGURE 8.2 Adjusting Flip Back Armrests...

  • Page 45: Installing/Removing The Cantilever Arms

    6. Insert the socket head screw into the hole in the back cane mounting bracket. Tighten  the socket head screw. Socket Head Screw Back Cane Mounting Bracket Flanged Bearings FIGURE 8.3 Installing/Removing the Cantilever Arms Part No 1143238 Cantilever Arm Mounting Tube Pivot Arm Bushing Socket Head Screw Cantilever Arm Socket Head Cap Screw Adjustable ASBA Seat...

  • Page 46: Adjusting The Height Of The Cantilever Arms

    Repeat to loosen the opposite back cane mounting bracket. 3. Adjust the position of mounting brackets and spreader bar up or down the back cane  to desired height. 4. Tighten the screws on both back cane mounting brackets to secure the back cane  mounting brackets at the desired height obtained in STEP 3. 5. Adjust the angle of the cantilever arms to accommodate the user. Refer to Adjusting  the Angle of the Cantilever Arms on page 47. FIGURE 8.4 Adjusting the Height of the Cantilever Arms Adjustable ASBA Seat Adjust angle of Cantilever Arm (STEP 1) Back Cane Mounting Bracket Screws (STEP 2) Part No 1143238...

  • Page 47: Adjusting The Angle Of The Cantilever Arms

    FIGURE 8.5 Adjusting the Angle of the Cantilever Arms Installing/Removing the Cantilever Arm Armpad NOTE: For this procedure, refer to FIGURE 8.6. NOTE: Reverse this procedure to remove the cantilever arm armpad. Secure the new armpad to the cantilever arm tube with two screws. FIGURE 8.6 Installing/Removing the Cantilever Arm Armpad Part No 1143238 Back Cane Arm Tube Adjustment Screw Cantilever Arm Armpad Screws Cantilever Arm Armpad Cantilever Arm Tube Adjustable ASBA Seat...

  • Page 48: Section 9-Adult Backs

    4. Remove the Contoura back and hardware from the back canes. Installing the Contoura Back 1. Position the front mounting brackets against the back canes. 2. Secure the lower front mounting brackets to the back canes using the two mounting  screws. Torque to 32 in‐lbs ± 20%. 3. Insert the tab of the rear mounting bracket into the slot in the front mounting bracket. 4. Secure the four rear mounting brackets to the four front mounting brackets using the  four socket screws, washers and locknuts (not shown). Torque to 75 in‐lbs ± 20%. 5. If necessary, tighten the socket screws and locknuts securing the front mounting  brackets to the slot in the Contoura back. Torque to 75 in‐lbs ± 20%. Removing the Mounting Hardware from the Contoura Back 1. Remove the four socket screws, eight washers and four locknuts that secure the front  mounting bracket to the Contoura back. 2. Remove the hardware from the back. Adjustable ASBA Seat WARNING Part No 1143238...

  • Page 49: Installing The Mounting Hardware Onto The Contoura Back

    Lower Front Mounting Bracket FIGURE 9.1 Removing/Installing the Contoura Back Part No 1143238 Back Cane Upper Front Mounting Bracket Washer Socket Screws** Washer *NOTE: Remove these socket screws  when removing the back from the back  canes. **NOTE: Remove these socket screws  when removing the hardware from the  back. Socket Mounting Screws* Screw Lower Front Mounting Bracket Washer Adjustable ASBA Seat...

  • Page 50: Adjusting The Back Width

    5. Torque the locknuts on upper and lower hex screws to 13 ft‐lbs ± 20%. DETAIL “A” - CANE BRACKET MOUNTING HOLES 85° 95° 90° Cane Bracket 105° Upper Hex 100° FIGURE 9.2 Adjusting the Back Angle Adjustable ASBA Seat WARNING Locknut Back Cane Washer Screw Lower Hex Screw Part No 1143238...

  • Page 51: Adjusting The Back Height

    NOTE: Note the back angle before disassembly for proper reinstallation. 3. For proper installation, note the mounting position of the upper hex screw securing  the cane bracket to the back cane. 4. Remove the upper hex screw, washer and locknut securing the cane bracket to the  back cane. 5. Remove the lower hex screw, washer and locknut securing the cane bracket to the back  cane. 6. Remove the back cane from the wheelchair. 7. Repeat STEPS 2 ‐ 6 for the opposite back cane. Installing NOTE: If replacing back canes, discard existing back canes and perform this procedure using new  back canes. 1. Install the lower hex screw, washer and locknut through the slot in the cane bracket to  secure the cane bracket to the back cane. NOTE: The cane bracket should be positioned as shown in FIGURE 9.3. 2. Install the upper hex screw, washer and locknut through one of the following: • Using the Same Back Angle ‐ the mounting hole noted in STEP 3 of Removing on  page 51. • Changing the Back Angle ‐ the mounting hole determined in Adjusting the Back  Angle on page 50. 3. Torque both locknuts to 13 ft‐lbs. Part No 1143238 Adjustable ASBA Seat...

  • Page 52: Removing/Installing The Spreader Bar

    Lower Hex Screw Slot FIGURE 9.3 Removing/Installing the Back Canes Removing/Installing the Spreader Bar NOTE: For this procedure, refer to FIGURE 9.4 on page 53. NOTE: This procedure only applies to systems without Contoura backs that omit upholstery. Removing 1. Remove the two mounting screws and locknuts securing the spreader bar to the back  canes. 2. Remove the spreader bar from the back canes. Installing 1. Position the spreader bar against the back canes. 2. Loosely install the two mounting screws and locknuts hold the spreader bar against  the back canes. 3. Adjust the position of the spreader bar until it is parallel with the ground/floor. 4. Torque the mounting screws to 13 ft‐lbs ± 20%. Adjustable ASBA Seat Locknuts Part No 1143238...

  • Page 53: Adjusting Spreader Bar Width

    Back Cane FIGURE 9.4 Removing/Installing the Spreader Bar Adjusting Spreader Bar Width NOTE: For this procedure, refer to FIGURE 9.5 on page 54. NOTE: The spreader bar can be adjusted from 16 to 20 inches or from 20 to 24 inches. NOTE: This procedure only applies to systems without Contoura backs that omit upholstery. 1. Remove spreader bar. Refer to Removing/Installing the Spreader Bar on page 52. 2. Remove the two screws, four coved spacers and two locknuts securing the two  handles to the tube. 3. Align the handle mounting holes with the desired tube mounting holes. 4. Secure the two handles to the tube using the two screws, four coved spacers and two  locknuts. Torque to 75 in‐lbs ± 20%. Part No 1143238 Spreader Locknut Mounting Screw Mounting Screw Adjustable ASBA Seat...
  • Page 54 16 to 20-inch Tube 20 to 24-inch Tube 20 Inches 24 Inches 19 Inches 23 Inches 18 Inches 22 Inches 17 Inches 21 Inches 16 Inches 20 Inches FIGURE 9.5 Adjusting Spreader Bar Width Adjustable ASBA Seat Part No 1143238...

  • Page 55: Section 10-Junior Backs

    The wheelchair may only be transported in a motor vehicle while unoccupied, and will be considered TRBKTS. NOTE: For this procedure, refer to FIGURE 10.1 on page 56. 1. Loosen, but DO NOT remove, the two lower mounting screws securing the cane  brackets to the back canes and inserts. 2. Remove the two upper mounting screws, washers*, two coved washers and two  locknuts securing the cane brackets to the back canes and inserts. *NOTE: Non‐TRRO wheelchairs have four washers and TRRO wheelchairs have two washers. 3. Align the upper mounting holes in the back canes and inserts with the desired  mounting holes in the cane brackets (Detail “A”). 4. Install the two upper mounting screws, washers*, coved washers and locknuts to  secure the cane brackets to the back canes. 5. Torque the locknuts on upper and lower mounting screws to 156 in‐lbs ± 20%. Part No 1143238 WARNING WARNING Adjustable ASBA Seat...
  • Page 56 100° 80° 85° 95° Non- TRRO Back Cane Bracket Back Cane Locknut Mounting Holes TRRO Back Cane Bracket Washer Washer* Coved Washer Mounting Screws Insert *NOTE: These washers are  only present on non‐TRRO  wheelchairs. FIGURE 10.1 Adjusting the Back Angle Adjustable ASBA Seat Part No 1143238...

  • Page 57: Adjusting The Back Height

    Adjusting the Back Height NOTE: For this procedure, refer to FIGURE 10.2. 1. Remove the two mounting screws and locknuts securing the push handle to the back  cane. 2. Align the push handle mounting holes with the desired back cane mounting holes. 3. Secure the push handle to the back cane using the two mounting screws and locknuts.  Torque to 75 in‐lbs ± 20%. Push Handle Back Cane Back Cane Mounting Holes Locknuts FIGURE 10.2 Adjusting the Back Height Part No 1143238 Push Handle Mounting Holes Mounting Screws Adjustable ASBA Seat...

  • Page 58: Removing/Installing The Back Canes

    3. Align the mounting holes in the back canes and inserts with the mounting holes in the  cane brackets. 4. Install the two mounting screws, washers*, coved washers and locknuts to secure the cane  brackets to the back canes. *NOTE: Non‐TRRO wheelchairs have four washers and TRRO wheelchairs have two washers. 5. Torque the locknuts to 156 in‐lbs ± 20%. 6. Repeat STEPS 1‐5 for the opposite side. NOTE: TRRO back cane  bracket shown. *NOTE: These washers are  only present on non‐TRRO  wheelchairs. Mounting Screws FIGURE 10.3 Removing/Installing the Back Canes Adjustable ASBA Seat Back Cane Bracket Washer* Back Cane Locknut Washer Coved Washer Insert Part No 1143238...

  • Page 59: Removing/Installing The Spreader Bar

    NOTE: For this procedure, refer to FIGURE 10.4. Removing 1. Remove the spreader bar cover. 2. Remove the two mounting screws securing the spreader bar to the back canes. 3. Remove the spreader bar from the back canes. Installing 1. Position the spreader bar against the back canes. 2. Ensure the ends of the spreader bar are flush with the back canes. 3. Loosely install the two mounting screws to secure the spreader bar to the back canes.  Torque to 75 in‐lbs ± 20%. 4. Install the spreader bar cover. Spreader Bar Cover Spreader Mounting Screw FIGURE 10.4 Removing/Installing the Spreader Bar Part No 1143238 Back Cane Mounting Screw Adjustable ASBA Seat...

  • Page 60: Adjusting Spreader Bar Width

    5. Install the spreader bar. Refer to Removing/Installing the Spreader Bar on page 59. Mounting Screws Spreader Bar Connector DETAIL “A” - SPREADER BAR WIDTH POSITIONS Spreader Bar Connector FIGURE 10.5 Adjusting Spreader Bar Width Adjustable ASBA Seat Tube Coved Spacers Coved Spacers 16 Inches 15 Inches 14 Inches 13 Inches...

  • Page 61: Section 11-Adult Seats

    Removing/Installing the Seat Pan NOTE: For this procedure, refer to FIGURE 11.1. Removing 1. Remove the seat cushion. 2. Remove the two socket screws securing  the seat pan to the seat frame. 3. Remove the seat pan from the seat  frame. Installing 1. Position the new seat pan onto the seat  frame as shown. 2. Secure the new seat pan to the seat  frame using the two socket screws. 3. Install the seat cushion. Part No 1143238 WARNING Seat FIGURE 11.1 Removing/Installing the Seat Socket Screw Seat Frame Adjustable ASBA Seat...

  • Page 62: Adjusting The Seat Width

    Remove the two hex screws securing the crossbars to each side rail. ii. Remove the crossbars from the side rails. iii. Insert new crossbars into the side rails. iv. Position the new crossbars so the mounting hole is facing down and aligned  with the side rail mounting hole. v. Secure the new crossbars to the side rails using the two hex screws. Torque the  hex screws to 75 in‐lbs ± 20%. 5. Pull/push the side rails (Detail “B”) to the desired width shown in the following table. Adjustable ASBA Seat Seat Width Adjustment Table SEAT WIDTH RANGE 16 - 20 inches in 1-inch increments 20 - 24 inches in 1-inch increments Part No 1143238...
  • Page 63 SIZE WIDTH SMALL 16-INCH 17-INCH 18-INCH 19-INCH 20-INCH LARGE 20-INCH 21-INCH 22-INCH 23-INCH 24-INCH *NOTE: Only left side rail shown. Use the same mounting hole for opposite side rail. 6. Align the crossbar mounting holes with the seat frame mounting holes. 7. Secure each crossbar to the seat frame with a hex screw and coved washer. Torque the  hex screw to 75 in‐lbs ± 20%. 8. If necessary, install the new spreader bar. Refer to Removing/Installing the Spreader  Bar on page 52. Part No 1143238 Seat Width Mounting Holes SIDE RAIL MOUNTING HOLES* (FRONT VIEW) Adjustable ASBA Seat...
  • Page 64 Crossbar Mounting Holes Side Rail Side Rail Mounting Hole Hex Screw Side Rail Hex Screw FIGURE 11.2 Adjusting the Seat Width Adjustable ASBA Seat Seat Frame Hex Screw Seat Frame Coved Mounting Washer Hole DETAIL “A” - REPLACING THE Crossbars...

  • Page 65: Adjusting The Seat Depth

    Part No 1143238 SEAT DEPTH RANGE 16 - 19 inches in 1-inch increments 19 - 22 inches in 1-inch increments Seat Depth Adjustment Table DISTANCE* (IN INCHES) 5.50 4.50 3.50 2.50 (Small Frame) 5.50 (Large Frame) 4.50 3.50 2.50 Adjustable ASBA Seat...

  • Page 66: Removing/Installing Side Rails

    Removing/Installing Side Rails NOTE: For this procedure, refer to FIGURE 11.4 on page 67. Removing Side Rails 1. Remove both armrests. 2. Remove the two hex screws, washer and lanyard securing the crossbars to the side rail. 3. Loosen, but DO NOT remove, the four hex screws securing the cane brackets to the  side rails. 4. Loosen, but DO NOT remove, the four hex screws securing the front arm sockets to  the side rails. 5. Use a screwdriver to gently tap the two roll pins out of the side rails. 6. Slide both cane brackets (with T‐nuts and back canes) out of the slots in the side rails. Adjustable ASBA Seat DETAIL “A” - SEAT MEASUREMENT Measure Distance Front Side Rail Socket DEPTH Rear Socket Side Rail...

  • Page 67: Installing Side Rails

    7. Tighten the four hex screws to secure the cane brackets to the side rails. Torque to 13  ft‐lbs ± 20%. 8. Install the armrests. NOTE: It may be necessary to slide the front arm sockets to the proper position to install the  armrests. 9. Tighten the four hex screws to secure the front arm sockets to the side rails. Torque to  13 ft‐lbs ± 20%. Back Cane Side Rail Roll Hex Screws FIGURE 11.4 Removing/Installing Side Rails Part No 1143238 Side View Crossbar Washer Front Arm Cane Bracket Socket Slot Hex Screws Adjustable ASBA Seat...

  • Page 68: Section 12-Junior Seats

    NOTE: For this procedure, refer to FIGURE 12.1 on page 70 and FIGURE 12.2 on page 71. Removing 1. Remove the seat cushion (not shown). 2. 12 to 13‐inch Seat Widths Only ‐ Perform the following steps: A. Note the mounting position of one back cane bracket for reinstallation. B. Remove the two hex screws, washer, pin and two locknuts securing one back cane  bracket to the top of the side rail. C. Remove the hex screw securing the side of the back cane bracket to the side rail. D. Loosen, but DO NOT remove, the two hex screws securing the remaining back  cane bracket to the top of the side rail. 3. Remove the screws and locknuts securing the seat pan to the seat frame. NOTE: Wheelchairs with power elevating legrests have two screws (FIGURE 12.1 on page 70)  and wheelchairs without power elevating legrests have three screws (FIGURE 12.2 on page 71). 4. Remove the seat pan from the seat frame. Installing 1. Position the seat pan onto the seat frame. NOTE: For 12 to 13‐inch seat widths, the seat pan must be positioned between the back cane  bracket and the side rail. Adjustable ASBA Seat WARNING Part No 1143238...
  • Page 69 2. 12 to 13‐inch Seat Widths ‐ Perform the following steps: A. Position the back cane bracket onto the seat pan and side rail in the position noted  in STEP 2A. B. Secure the back cane bracket to the seat pan and side rail using the two hex screws,  washer, pin and two locknuts. Torque to 75 in‐lbs ± 20%. C. Secure the side of the back cane bracket to the slot in the side rail using the hex  screw. Torque to 156 in‐lbs ± 20%. D. Tighten the two hex screws on the remaining back cane bracket. Torque to 75 in‐ lbs ± 20%. 3. Secure the seat pan to the seat frame using the screws and locknuts. Tighten securely. NOTE: Wheelchairs with power elevating legrests have two screws (FIGURE 12.1 on page 70)  and wheelchairs without power elevating legrests have three screws (FIGURE 12.2 on page 71). 4. Install the seat cushion (not shown). Part No 1143238 Adjustable ASBA Seat...
  • Page 70 Screw and Side of Back Washer for Cane Bracket Side of Back Cane Bracket Locknut Locknut Seat Frame Locknut and Locknut and Pin Washer NOTE: Side rail does not need  Side Rail to be removed for this  procedure.  FIGURE 12.1 Removing/Installing the Seat Pan Adjustable ASBA Seat Part No 1143238...
  • Page 71 Screw and Side of Back Washer for Cane Bracket Side of Back Cane Bracket Locknut Locknuts Seat Frame Locknut and Locknut and Pin Washer NOTE: Side rail does not need  Side Rail to be removed for this  procedure.  FIGURE 12.2 Removing/Installing the Seat Pan Part No 1143238 Adjustable ASBA Seat...

  • Page 72: Adjusting The Seat Width

    2. Remove the hex screw and coved washer securing each crossbar to the seat frame. 3. Pull/push the side rails (Detail “B”) to the desired width shown in the following table. Junior Seat Width Mounting Holes SEAT WIDTH 12-INCH 13-INCH 14-INCH 15-INCH 16-INCH *NOTE: Only left side rail shown. Use the same mounting hole for opposite side rail. 4. Align the cross bar mounting holes with the seat frame mounting holes. 5. Secure each crossbar to the seat frame with a hex screw and coved washer. Torque the  hex screw to 75 in‐lbs ± 20%. 6. Adjust the spreader bar. Refer to Adjusting Spreader Bar Width on page 60. 7. Install the spreader bar. Refer to Removing/Installing the Spreader Bar on page 59. Adjustable ASBA Seat CROSS BAR MOUNTING HOLES* (FRONT VIEW) Part No 1143238...
  • Page 73 LEGRESTS Side Rail FIGURE 12.3 Adjusting the Seat Width Part No 1143238 Seat Frame Crossbar Mounting Holes Hex Screw and Coved Washer Hex Screw and Coved Washer Seat Frame Crossbar Mounting Holes Hex Screw and Coved Washer Adjustable ASBA Seat...

  • Page 74: Adjusting The Seat Depth

    SEAT DEPTH 12-INCH 13-INCH 14-INCH 15-INCH 16-INCH 17-INCH 18-INCH *NOTE: Distance is between the front of the rear arm socket and the rear of the side rail (Detail “B”). 9. Measure the distance determined in STEP 8 from the rear of the side rail. 10. Slide the rear arm sockets along the side rails to align the front of the rear arm socket  with the distance measured made in STEP 9. 11. Secure the rear arm sockets to the side rails with the four hex screws and washers.  Torque the hex screws to 156 in‐lbs ± 20%. 12. Slide the front arm sockets along the side rails until the center of the front arm socket  is 10.47 inches from the rear of the rear arm socket. 13. Secure the front arm sockets to the side rails with the four hex screws. Torque the hex  screws to 156 in‐lbs ± 20%. Adjustable ASBA Seat DISTANCE* (IN INCHES) 4.13 4.13 4.13 3.75 2.75 1.75 0.75 Part No 1143238...
  • Page 75 Seat Frame NOTE: Side rail does not need  to be removed for this  Slot Side Rail procedure.  18-inch 17-inch 16-inch 15-inch 14-inch 13-inch 12-inch Front of Wheelchair Mounting Screws for Back Cane Bracket Back Cane Bracket Mounting Screw and Washer for Side of Back Cane Bracket Locknut Adjustable ASBA Seat...

  • Page 76: Limited Warranty

    All rights reserved. Trademarks are identified 570 Matheson Blvd E Unit 8 by the symbols ™ and ®. All trademarks are Mississauga Ontario owned by or licensed to Invacare L4Z 4G4 Canada Corporation unless otherwise noted. 800-668-5324 ©2008 Invacare Corporation...

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