Invacare Pronto M91 Service Manual
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Invacare Pronto M91 Service Manual

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See also: Owner's Manual , User Manual
Service Manual
Pronto
M91™and
®
M94™
®
with SureStep
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 Pronto M91

  • Page 1 Service Manual Pronto M91™and ® M94™ ® with SureStep 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: Reference Documents

    ACCESSORIES 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. REFERENCE DOCUMENTS Refer to the table below for part numbers of additional documents which are referenced  in this manual.

  • Page 3: Table Of Contents

    M91 with Formula™ PTO Plus Seating System ................13 M94 Standard.............................14 TYPICAL PRODUCT PARAMETERS ..........15 Pronto M91..............................15 Pronto M91 with Power Tilt Only .......................16 Pronto M91 with Formula PTO Plus ....................17 Pronto M94..............................18 SECTION 1—GENERAL GUIDELINES ..........19 Repair or Service Information .......................19 Operation Information ..........................19...
  • Page 4 TABLE OF CONTENTS TABLE OF CONTENTS SECTION 4—SEAT ................35 Removing/Installing or Tilting the Seat Assembly ................35 Removing/Installing the Seat Assembly without Powered Seating Systems ......35 Tilting the Seat Assembly - Power Tilt Only Seating System ............36 Tilting the Seat Assembly - Formula PTO Plus Seating System Only ........38 Adjusting the Seat Height ........................40 Removing/Installing the Adjustable Height Tubes................42 ASBA Seat Service Procedures ......................43...
  • Page 5 TABLE OF CONTENTS TABLE OF CONTENTS SECTION 5—ARMS ................. 66 Arm Service Procedures for Van Seat....................66 Removing/Installing Van Seat Arm ....................66 Adjusting Van Seat Arm Width ......................66 Adjusting Van Seat Arm Angle......................67 Adjusting Van Seat Arm Height (Adjustable Height Arms Only) ..........67 Replacing Van Seat Armrest Pad Assembly ...................68 Arm Service Procedures for ASBA and Adjustable ASBA Seat.............69 Removing/Installing Flip Back Armrest....................69...
  • Page 6 TABLE OF CONTENTS TABLE OF CONTENTS Installing..............................83 Removing/Installing the Front Headtube Assembly................83 Removing/Installing the Drive Wheel ....................84 Removing ...............................84 Installing..............................84 Removing/Installing the Drive Wheel Hub ..................85 Removing ...............................85 Installing..............................85 Replacing the 2-Piece Wheel Rim and/or the Foam Filled or Pneumatic Tires......87 SECTION 9—SHROUDS/FRAME ............
  • Page 7 TABLE OF CONTENTS TABLE OF CONTENTS SECTION 12—ELECTRONICS ............112 Disconnecting/Connecting the Joystick.................... 112 Disconnecting ............................ 112 Connecting ............................113 Repositioning the Joystick........................116 ASBA or Adjustable ASBA Model....................116 Van Seat Model..........................116 Replacing the MKIV RII™ 80 AMP Controller................117 Replacing the NX-80, NK5-EX, MK5 or MK6i Controller ............

  • Page 8: Special Notes

    CHANGE WITHOUT NOTICE. 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 9 WARNING The drive behavior initially experienced by the user may be different from other chairs previously used. This Power Wheelchair has Invacare’s SureStep technology, a feature that provides the wheelchair with optimum traction and stability when driving forward over transitions and thresholds of up to 3-inches. The following warnings apply specifically to the SureStep Feature.

  • Page 10: Label Locations

    LABEL LOCATIONS LABEL LOCATIONS M91 Standard Serial Number Label is located on a plate on the inside of the right rear frame. ® Pronto M91™and M94™ Part No. 1125038...

  • Page 11: M91 Heavy Duty

    LABEL LOCATIONS M91 Heavy Duty Serial Number Label is located on a plate on the inside of the right rear frame. ® Part No. 1125038 Pronto M91™and M94™...

  • Page 12: M91 With Power Tilt Only

    LABEL LOCATIONS M91 with Power Tilt Only Serial Number Label is located on a plate on the inside of the right rear frame. ® Pronto M91™and M94™ Part No. 1125038...

  • Page 13: M91 With Formula™ Pto Plus Seating System

    LABEL LOCATIONS M91 with Formula™ PTO Plus Seating System M91 Standard Only M91 Heavy Duty Only Rear View of Actuator ® Part No. 1125038 Pronto M91™and M94™...

  • Page 14: M94 Standard

    LABEL LOCATIONS M94 Standard Serial Number Label is located on a plate on the inside of the right rear frame. ® Pronto M91™and M94™ Part No. 1125038...

  • Page 15: Typical Product Parameters

    Typical Product Parameters TYPICAL PRODUCT PARAMETERS Pronto M91 18-INCH 20-INCH 22-INCH ASBA SEAT ADJUSTABLE VAN SEAT VAN SEAT VAN SEAT ASBA SEAT SEAT WIDTH RANGE: 18 inches 20 inches 22 inches 16 to 24 inches SEAT DEPTH: 16 to 18 inches...

  • Page 16: Pronto M91 With Power Tilt Only

    Typical Product Parameters Pronto M91 with Power Tilt Only SEAT WIDTH RANGE: 16 to 22 inches SEAT DEPTH RANGE (1-INCH INCREMENTS): 16 to 22 inches BACK HEIGHT RANGE: 16 to 24 inches BACK ANGLE RANGE (ASBA): 90° to 120° in 6¼° increments *SEAT-TO-FLOOR HEIGHT (ADJUSTABLE): 20 to 21 inches ±...

  • Page 17: Pronto M91 With Formula Pto Plus

    Typical Product Parameters Pronto M91 with Formula PTO Plus ASBA SEAT ADJUSTABLE ASBA SEAT SEAT WIDTH RANGE: 16 to 22 inches SEAT DEPTH RANGE (1-INCH INCREMENTS): 16 to 22 inches BACK HEIGHT RANGE: 16 to 24 inches BACK ANGLE RANGE (ASBA): 80°...

  • Page 18: Pronto M94

    Typical Product Parameters Pronto M94 18-INCH 20-INCH 22-INCH 24-INCH ASBA SEAT VAN SEAT VAN SEAT VAN SEAT VAN SEAT SEAT WIDTH RANGE: 18 inches 20 inches 22 inches 24 inches 18 to 24 inches SEAT DEPTH: 16 to 18 inches 18 to 20 inches 20 to 22 inches 20 to 22 inches...

  • Page 19: Section 1-General Guidelines

    SECTION 1—GENERAL GUIDELINES SECTION 1—GENERAL GUIDELINES WARNING SECTION 1 - GENERAL GUIDELINES contains important information for the safe operation and use of this product. Repair or Service Information Set‐up of the Electronics Control Unit is to be performed only by a qualified technician.  The final adjustments of the controller may affect other activities of the wheelchair.  Damage to the equipment could occur if improperly set‐up or adjusted. 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. Operation Information Ensure that driving surfaces, ramps, lifts, elevators, etc., are capable of supporting  combined weight of user and wheelchair (for 500 lbs user, the combined weight could be  up to 800 lbs).

  • Page 20: Tire Pressure

    SECTION 1—GENERAL GUIDELINES Tire Pressure DO NOT release the wheelchair from service unless it has the proper tire pressure (PSI).  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. Electrical Grounding Instructions DO NOT, under any circumstances, cut or remove the round grounding prong from any  plug used with or for Invacare products. Some devices are equipped with three‐prong  (grounding) plugs for protection against possible shock hazards and fire. Where a two‐ prong wall receptacle is encountered, it is the personal responsibility and obligation of the  customer to contact a qualified electrician and have the two‐prong receptacle replaced  with a properly grounded three‐prong wall receptacle in accordance with the National  Electrical Code. If you must use an extension cord, use ONLY a three‐wire extension cord  having the same or higher electrical rating as the device being connected. In addition,  Invacare has placed RED/ORANGE WARNING TAGS on some equipment. DO NOT  remove these tags. Three (3) prong to two (2) prong adapters should not be used. Use of three (3) prong  adapters can result in improper grounding and present a shock hazard to the user. Batteries The warranty and performance specifications contained in this manual are based on the  use of deep cycle gel cell batteries. Invacare strongly recommends their use as the power  source for this unit. Carefully read battery/battery charger information prior to installing, servicing or  operating your wheelchair. ® Pronto M91™and M94™ Part No. 1125038...

  • Page 21: Section 2-Emi Information

    SECTION 2—EMI INFORMATION SECTION 2—EMI INFORMATION WARNING CAUTION: IT IS VERY IMPORTANT THAT YOU READ THIS INFORMATION REGARDING THE POSSIBLE EFFECTS OF ELECTROMAGNETIC INTERFERENCE ON YOUR POWERED WHEELCHAIR. Electromagnetic Interference (EMI) From Radio Wave Sources Powered wheelchairs and motorized scooters (in this text, both will be referred to as powered wheelchairs) may be susceptible to electromagnetic interference (EMI), which is interfering electromagnetic energy (EM) emitted from sources such as radio stations, TV stations, amateur radio (HAM) transmitters, two way radios, and...
  • Page 22 2) This device has been tested to a radiated immunity level of 20 volts per meter. 3) The immunity level of this product is unknown. Modification of any kind to the electronics of this wheelchair as manufactured by Invacare may adversely affect the EMI immunity levels. ® Pronto M91™and M94™...

  • Page 23: Section 3-Safety Inspection/Troubleshooting

    SECTION 3—SAFETY INSPECTION/TROUBLESHOOTING SECTION 3—SAFETY INSPECTION/ TROUBLESHOOTING Safety Inspection Checklists These adjustments should be made whenever this product is serviced, especially as part  of the initial unit setup. Follow these procedures: Inspect/Adjust CAUTION As with any vehicle, the wheels and tires should be checked periodically for cracks and wear, and should be replaced. ❑ Ensure wheelchair rolls straight (no excessive drag or pull to one side). ❑ Ensure all fasteners on clothing guards are secure. ❑ Ensure arms are secure but easy to release and adjustment levers engage properly. ❑...

  • Page 24: Troubleshooting

    SECTION 3—SAFETY INSPECTION/TROUBLESHOOTING Troubleshooting Electrical NOTE: For additional troubleshooting information and explanation of error codes, refer to the   electronics manual supplied with each wheelchair. Wheels SOLUTIONS If pneumatic, check tires for correct and equal pressure. Check for loose stem nuts/bolts. Check that casters contact ground at the same time. Common SYMPTOM PROBABLE CAUSE SOLUTIONS Charger still plugged in when Unplug charger to drive wheelchair.

  • Page 25: Information Gauge Display Diagnostics

    SECTION 3—SAFETY INSPECTION/TROUBLESHOOTING Information Gauge Display Diagnostics DISPLAY DESCRIPTION DEFINITION COMMENTS Information Gauge Display All LEDs are off. Power is off. All LEDs are on. Power is on. Fewer than three LEDs on implies reduced battery charge. Left RED LED is flashing. Battery charge is low.
  • Page 26 SECTION 3—SAFETY INSPECTION/TROUBLESHOOTING Left Motor Fault Left Motor Short Circuit Check the left motor, connections and motor cable. Left Motor Open Circuit Left Motor Connection Fault Motor Terminal Connected to B+ Left Motor Voltage Fault Left Motor Bridge Fault Too Many Hardware Current Limit Events Current Offset Out of Range Hardware Current Limit Fault...
  • Page 27 Check connections and wiring. Replace Fault Bus cable. Low communication mode General Fault General fault Check all connections and wiring. Contact Invacare Technical Service. Incompatible/ Incompatible/incorrect Wrong type of remote connected. Ensure incorrect Remote Remote the branding of the joystick matches that of controller unit.

  • Page 28: Mpj+, Psr+, Psf+ Joysticks Or Displays

    (Error code W05). Batteries draw excessive current Battery failure. Have batteries checked for shorted when charging. cell. Replace if necessary. Electrical malfunction. Contact Dealer/Invacare for service. Pronto® M91™and M94™ Part No. 1125038...

  • Page 29: Motor/Gearbox/Brake

    Battery failure. Check batteries for shorted cell. level is low - immediately after Replace if necessary. recharge. Malfunctioning battery charger. Contact Dealer/Invacare for Service. Electrical malfunction. Contact Dealer/Invacare for Service. Battery indicator flashes the charge Batteries not charged. Have charger checked.
  • Page 30 Ohm out motor to check for possible internal damage (worn out brushes may be possible). Controller power stage board or Replace controller or send to Invacare for repair. relays may be damaged. Controller senses heavy load and Stop driving and allow electronics cool.

  • Page 31: Battery

    Check for damage on the power cord, replace if Charger damaged or send in for repair. Charger LED’s burnt out. Send charger to Invacare for repair. Charger may have internal fuse that is Remove charger cover and check for fuses. if fuses blown.

  • Page 32: Checking Battery Charge Level

    SECTION 3—SAFETY INSPECTION/TROUBLESHOOTING SYMPTOM PROBABLE CAUSE SOLUTIONS Consumer not charging batteries long Instruct consumer to charge for 8-10 hours enough. minimum. Batteries may be weak. Perform load test or check “Battery Quality Menu” Batteries have with the programmer. Refer to MK electronics short driving range manual, part number 1114808.

  • Page 33: Field Load Test

    Old batteries lose their ability to store and release power, due to increased internal  resistance. This means that as you try to take power from the battery, some of that power  is used up in the process of passing through the battery, resulting in less voltage at the  posts. The more power drawn, the lower the voltage available. When this lost voltage  drops the output 1.0 volts under load (2.5 for a pair), replace the batteries. To spot this problem, test batteries under load. Use a digital voltmeter to check battery charge level at the charger connector. It is located  on the joystick. NOTE: READ these instructions CAREFULLY and the manufacturer’s instructions on the  digital voltmeter before using the digital voltmeter. NOTE: Invacare recommends that ONLY a qualified technician perform this test. 1. Ensure that power is OFF. 2. Make sure battery is fully charged. An extremely discharged battery will exhibit the  same symptoms as a bad one. 3. Remove the footrests from the wheelchair. 4. Connect the voltmeter leads to the charger port on the wheelchair as shown in  FIGURE 3.1 on page 34. Most digital voltmeters are not affected by polarity, however,  analog meters (meters with swinging needles) can be and should be used carefully.  A good meter reading should be 25.5 to 26 VDC. WARNING When performing STEPS 5 and 6, ensure feet are clear from casters and wall otherwise injury may occur.

  • Page 34: Motor Testing

    FIGURE 3.1 Field Load Test Motor Testing NOTE: For this procedure, refer to FIGURE 3.2. 1. On the 4‐pin motor connector, locate the two contacts in the red and black housings. 2. Set the digital multimeter to measure ohms (Ω). 3. Measure the resistance between the two motor contacts. NOTE: A normal reading is between 0.2 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. MKIV 4-pin Motor Connector & MK6i 4-pin Motor Connector Motor Motor 4 Pin Motor Connector 4 Pin Motor Connector FIGURE 3.2 Motor Testing Pronto®...

  • Page 35: Section 4-Seat

    SECTION 4—SEAT SECTION 4—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 36: Tilting The Seat Assembly - Power Tilt Only Seating System

    SECTION 4—SEAT 4. Pull up on latch bar to verify that brackets are engaged with seat clevis pins. 5. M91 with Full Recline Back and Drive Lockout Switch ONLY ‐ Perform the following  to connect the drive lockout switch: A. Open rear shroud by turning knob 90° until detent is felt, slide rear shroud towards  rear casters and tilt top edge away from wheelchair. B. Connect the drive lockout switch cable located next to the charger (Detail “A” of  FIGURE 4.1). C. Close the rear shroud by tilting the top edge towards the wheelchair, sliding the  rear shroud towards the knob, and turning knob 90° until detent is felt. 6. Connect the joystick. Refer to Disconnecting/Connecting the Joystick on page 112. DETAIL “A” NOTE: Van Seat model shown. ASBA seat removes/installs in  NOTE: Rear shroud not  the same way. shown for clarity. Drive Drive Lockout Lockout Switch Cable Switch Cable Rear Pivot (To Wheelchair) (To Seat) Brackets Seat Clevis...
  • Page 37 SECTION 4—SEAT Tilting the Seat Assembly Back 1. Place the wheelchair in a well ventilated area where work can be performed without  risking damage to carpeting or floor covering. 2. Verify the joystick ON/OFF switch is in the OFF position and disconnect joystick cable. 3. Remove front rigging. Refer to ownerʹs manual shipped with wheelchair. 4. Remove the two detent pins securing the power tilt only frame to the front seat posts.  5. Firmly grasp the front edge of the seat assembly, slowly tilt the seat assembly BACK  into the up/open position. 6. Remove prop rod from the clip located on the power tilt only frame and engage the  prop rod end in to the support bracket.  7. Gently allow weight of seat assembly to be supported by the prop rod. NOTE:  Leave the seat assembly in the up/open position only while performing any necessary  procedures. Always lower the seat assembly to the down/closed position when not servicing the  wheelchair. Tilting the Seat Assembly Forward 1. Using one hand, firmly grasp the front edge of the seat assembly and lift until seat  assembly is no longer supported by the prop rod. 2. Disengage prop rod from the support bracket and secure into clip. 3. Using both hands, slowly tilt the seat assembly forward into the down/closed position. WARNING Ensure the two detent pins are fully engaged and the power tilt only frame is securely locked in place before use - otherwise injury or damage may result.

  • Page 38: Tilting The Seat Assembly - Formula Pto Plus Seating System Only

    SECTION 4—SEAT Power Tilt Only Frame Detent Pin Prop Rod Detent Pin Clip Front Seat Post Front Seat Post (Mounting Hole) (Mounting Hole) FIGURE 4.2 Tilting the Seat Assembly - Power Tilt Only Seating System Tilting the Seat Assembly - Formula PTO Plus Seating System Only WARNING Make sure power to the wheelchair is OFF before performing this procedure.
  • Page 39 SECTION 4—SEAT 3. Verify the joystick ON/OFF switch is in the OFF position and disconnect joystick cable. 4. Engage the motor release levers. Refer to Engaging/Disengaging Motor Release Lever  on page 97. 5. Remove front rigging. Refer to Installing/Removing Front Riggings on page 71. 6. Remove the two screws and washers securing the Formula PTO Plus frame to the front  seat posts. 7. Firmly grasp the front edge of the seat assembly, slowly tilt the seat assembly back into  the UP/OPEN position. 8. Remove prop rod from the clip located on the Formula PTO Plus frame and engage  the prop rod end into the front seat post as shown in FIGURE 4.3 on page 40. 9. Gently allow weight of seat assembly to be supported by the prop rod. NOTE: Leave the seat assembly in the up/open position only while performing any necessary  procedures. Always lower the seat assembly to the down/closed position when not servicing the  wheelchair and ensure it is in the locked position before using. Tilting the Seat Assembly Forward 1. Using one hand, firmly grasp the front edge of the seat assembly and lift until seat  assembly is no longer supported by the prop rod. 2. Disengage the prop rod from the front seat post and secure into clip. 3. Using both hands, slowly tilt the seat assembly forward into the down/closed position. WARNING Ensure the two screws are fully engaged and the Formula PTO Plus frame is securely locked in place before use - otherwise injury or damage may result.

  • Page 40: Adjusting The Seat Height

    SECTION 4—SEAT Mounting Hole Clip Formula PTO Plus Frame Front Seat Post Screw Prop Rod Washer FIGURE 4.3 Tilting the Seat Assembly - Formula PTO Plus Seating System Only Adjusting the Seat Height WARNING If wheelchair is equipped with power tilt only or the Formula PTO Plus seating sys- tem, refer to Power Tilt only for Pronto M71 and M91 Owner’s Manual, Part Num- ber 1118362 or to Formula PTO Plus Powered Seating Service manual, part number 1125031 to perform this procedure.
  • Page 41 SECTION 4—SEAT 5. Repeat STEPS 2‐4 for the three remaining adjustable height tubes. WARNING When reinstalling the seat verify that the seat brackets are engaged with the seat clevis pins by pulling UP on the latch bar. 6. Reinstall the seat. Refer to Removing/Installing the Seat Assembly without Powered  Seating Systems on page 35. ADJUSTING THE SEAT HEIGHT AVAILABLE MOUNTING HOLES FOR FRONT ADJUSTABLE HEIGHT TUBE CHAIR IS EQUIPPED WITH VAN SEAT WITH FOOTBOARD...

  • Page 42: Removing/Installing The Adjustable Height Tubes

    SECTION 4—SEAT Removing/Installing the Adjustable Height Tubes NOTE: For this procedure, refer to FIGURE 4.5. NOTE: Reverse this procedure to install the adjustable height tubes. 1. Remove the top shroud from the wheelchair. Refer to Removing/Installing the  Shrouds on page 88. 2. Remove the mounting screw and locknut securing the front adjustable height tube to  the front support tube.  3. Remove the front adjustable height tube from the front support tube. 4. Remove the mounting screw and locknut securing the rear adjustable height tube to  the rear support tube. 5. Remove the rear adjustable height tube from the rear support tube. Rear Support Tube Rear Adjustable Height Tube Mounting Screw Locknut Locknut Front Adjustable Height Tube Front Support Tube Mounting Screw NOTE: M94 shown.

  • Page 43: Asba Seat Service Procedures

    SECTION 4—SEAT ASBA Seat Service Procedures Removing/Installing the Seat Pan NOTE: For this procedure, refer to FIGURE 4.6. NOTE: Take note of the position and orientation of the mounting hardware, seat positioning straps  and quick release pin tabs for installation of the seat pan. NOTE: Reverse this procedure to install the seat pan. Torque locknuts to 75‐inch‐lbs. 1. Perform one of the following: • Remove seating system. Refer to manufacturer’s seating system installation  instructions. • Remove cushion by pulling UP to release hook and loop strips. Remove cushion  from seat pan. 2. Remove the two rear mounting screws, quick release pin tabs, spacers and locknuts  that secure the seat pan and seat positioning straps to the seat frame. NOTE: The two front mounting screws, spacers and locknuts also secure the front rigging support  tubes to the seat frame. 3. Remove the four mounting screws, locknuts and four spacers securing the seat pan to  the seat frame (FIGURE 4.6). 4. Remove the seat pan from the seat frame. Seat Pan Mounting Screws Seat Positioning Seat Frame Strap Spacer...

  • Page 44: Changing The Seat Width/Depth

    SECTION 4—SEAT Changing the Seat Width/Depth NOTE: The seat frame width and depth are not adjustable. A new seat frame must be ordered to  change seat depth and/or width. Refer to Replacing the Seat Frame on page 44. Replacing the Seat Frame NOTE: For this procedure, refer to FIGURE 4.7. 1. Remove the front riggings from the seat frame. Refer to Installing/Removing Front  Riggings on page 71. 2. Remove the seat from the wheelchair. Refer to Removing/Installing or Tilting the Seat  Assembly on page 35. 3. Remove the seat pan. Refer to Removing/Installing the Seat Pan on page 43. 4. Remove the four mounting screws and locknuts securing the seat frame to the seat  frame adapter. 5. Remove the seat frame from the seat frame adapter. 6. Discard the existing seat frame. 7. Align the four mounting holes of the new seat frame with the correct mounting  position on the seat frame adapter (Detail “A” of FIGURE 4.7). 8. Using four existing mounting screws and four new locknuts, secure the seat frame to  the seat frame adapter. 9.

  • Page 45: Replacing The Seat Positioning Strap

    SECTION 4—SEAT Replacing the Seat Positioning Strap NOTE: For this procedure, refer to FIGURE 4.8. 1. Remove the seat cushion from the seat pan. 2. Remove the flip back armrests. Refer to Removing/Installing Flip Back Armrest on  page 69. 3. Remove the two mounting screws,  Mounting Screws quick release pin tabs, spacers and  Seat Pan locknuts that secure the seat pan and  Seat seat positioning straps to the seat  Positioning frame. Strap 4. Remove the two halves of the seat  positioning strap from the rear seat  frame. 5. Reposition the two new seat  positioning strap halves underneath  seat rails. 6. Reinstall the two mounting screws,  Seat Frame quick release pin tabs, spacers and ...
  • Page 46 SECTION 4—SEAT Removing 1. Remove flip back armrest from the wheelchair. Refer to Arm Service Procedures for  ASBA and Adjustable ASBA Seat on page 69. NOTE: Note the back angle before disassembly for proper reinstallation. 2. On the side of wheelchair with armrest removed, remove one of the mounting screws,  washer, coved washer and locknut that secure the back cane to the seat frame. 3. Cut the tie‐wraps that secure the bottom of the existing back upholstery to the seat  frame. 4. Thread the mounting screw removed in STEP 2 through the back cane from the inside  of the wheelchair to hold the insert in place. 5. Remove the remaining mounting screw, washer, coved washer and locknut that  secures the back cane to the seat frame. 6. Repeat STEPS 1‐4 for the opposite side of the wheelchair and remove back assembly  from wheelchair. 7. Remove the two mounting screws and washers that secure the existing back  upholstery to the back canes. 8. If present, release hook and loop strap securing the back upholstery to the back canes. 9. Remove the two mounting screws used to keep inserts in the back canes in STEP 4. Set  mounting screws and inserts aside. 10. Loosen, but DO NOT remove, the two mounting screws and locknuts securing the  spreader bar to the back canes. 11. Grasp the hand grip and slide the back cane out of the spreader bar (if applicable) and  the back upholstery. Installing NOTE: If replacing back upholstery, discard existing back upholstery and perform this procedure  using new back upholstery. NOTE: If replacing back canes, discard existing back canes and perform this procedure using new ...
  • Page 47 SECTION 4—SEAT 5. Position back assembly between the back angle plates (FIGURE 4.9). 6. On one side of wheelchair, align back cane mounting holes with the desired mounting  holes of the back angle plate. 7. Remove the two mounting screws used to keep inserts in the back canes in STEP 3. Set  mounting screws and inserts aside. WARNING The back canes MUST be fastened securely to the seat frame BEFORE using the wheelchair. Torque to 75-inch-lbs. 8. From outside of wheelchair, secure the back cane to the back angle plate using two  mounting screws, washers, coved washers and locknuts (FIGURE 4.9). Use Loctite 242  and torque to 75‐inch‐lbs. 9. Repeat STEPS 6‐8 on opposite side of wheelchair. 10. Secure the top of the back upholstery to the back canes with the two existing mounting  screws. 11.

  • Page 48: Adjusting The Back Angle

    SECTION 4—SEAT NOTE: When replacing the back upholstery,  Back Canes back assembly or changing back height, follow  Coved these guidelines for spreader bar height: Washers Screws with BACK HEIGHT SPREADER BAR HEIGHT Washers 16 inches 5 inches Locknuts 17 inches 5 inches 18-19 inches 7 inches NOTE: Height of Spreader Bar from BOTTOM  of Back Canes to TOP of Spreader Bar Clamp. Back Upholstery Screw with Lug Spreader Bar Mounting Screws Locknut Back Insert Washers...
  • Page 49 SECTION 4—SEAT 2. Remove the mounting screw, washer, coved washer and locknut from the top  mounting hole of back angle plate and back cane (FIGURE 4.10). NOTE: To avoid losing the insert in each back cane, thread the mounting screw through the cane  from the inside of wheelchair to hold the insert in place. 3. Remove the mounting screw, washer, coved washer and locknut from the bottom  mounting hole of the back angle plate and back cane. 4. Reposition the back canes into the correct mounting holes of the back angle plate to  obtain a back angle between 80° and 100° in 5° increments. 5. Starting with the bottom mounting hole, use the two mounting screws, washers,  coved washers and locknuts to secure the back cane with insert to the back angle plate. 6. Torque mounting screws to 75‐inch‐lbs. 7. Reinstall the flip back armrests onto the wheelchair. Refer to Removing/Installing Flip  Back Armrest on page 69. ANGLE BACK CANE MOUNTING HOLE BACK ANGLE PLATE HOLE Top Front Back Cane Bottom Rear 80° Bottom Back Angle Plate Top Front...

  • Page 50: Adjustable Asba Seat Service Procedures

    SECTION 4—SEAT Adjustable ASBA Seat Service Procedures Removing/Installing the Seat Pan NOTE: For this procedure, refer to FIGURE 4.11. Removing Socket Seat Pan Screws 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 Seat Frame 1. Position the new seat pan onto the seat  frame as shown. FIGURE 4.11 Removing/Installing the Seat Pan 2. Secure the new seat pan to the seat  frame using the two socket screws.
  • Page 51 SECTION 4—SEAT i. 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. Seat Width Mounting Holes FRAME SEAT SIDE RAIL MOUNTING HOLES* SIZE WIDTH (FRONT VIEW) 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.

  • Page 52: Adjusting The Seat Depth

    SECTION 4—SEAT 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 58. NOTE: Seat pan, back and  arms removed for clarity. Crossbar Crossbar Seat Frame Mounting Holes Hex Screw Seat Frame Coved Mounting Side Rail Washer Hole DETAIL “A” - REPLACING THE CROSSBARS Crossbars Side Rail Mounting Hole Hex Screw Mounting Hole Side Rail...
  • Page 53 SECTION 4—SEAT 2. Perform one of the following: • Seat Depth Adjustment is Within the Range of Existing Seat Frame ‐ Proceed to  STEP 3. • Seat Depth Adjustment is Beyond the Range of Existing Seat Frame ‐ Replace the  side rails. Refer to Removing/Installing Side Rails on page 54. 3. Loosen, but DO NOT remove, the four hex screws and washers securing the bottom  of 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 the following Seat Depth Adjustment Table to determine the distance required to  obtain the desired seat depth. Seat Depth Adjustment Table SEAT DEPTH DISTANCE* (IN INCHES) 16-INCH 5.50 17-INCH 4.50 18-INCH 3.50 19-INCH 2.50 (Small Frame) 5.50 (Large Frame) 20-INCH 4.50...

  • Page 54: Removing/Installing Side Rails

    SECTION 4—SEAT DETAIL “A” - SEAT DEPTH MEASUREMENT Rear Socket Side Rail Measure Distance Cane Front Bracket Side Rail Socket Hex Screws FIGURE 4.13 Adjusting the Seat Depth Removing/Installing Side Rails NOTE: For this procedure, refer to FIGURE 4.14 on page 55. Removing Side Rails 1. Remove both armrests. 2. Remove the two hex screws, washer and lanyard securing the crossbars to the side rail. 3.

  • Page 55: Installing Side Rails

    SECTION 4—SEAT Installing Side Rails 1. Install new side rails onto crossbars. NOTE: Ensure long end of side rail is towards the front of the wheelchair. 2. Secure the side rails to the crossbars with the hex screws, washer and lanyard. Torque  to 75 in‐lbs ± 20%. 3. Slide cane brackets (with T‐nuts and back assembly) into the slots in the side rails. 4. Slide front arm sockets (with T‐nuts) into the slots in the side rails. 5. Use a rubber mallet to tap the two roll pins into the side rails. 6. Adjust the seat depth. Refer to Adjusting the Seat Depth on page 52. 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%. Side View Front Arm Cane Bracket Socket Back Slot Cane Side Rail Crossbar Hex Screws...

  • Page 56: Adjusting The Back Width

    SECTION 4—SEAT Adjusting the Back Width A new back pan is required when the back width is adjusted. Back width MUST be  adjusted with seat width. Refer to Adjusting the Seat Width on page 50. Contoura Backs Only ‐ Seat and back widths are restricted to 16, 18, 20, 22 or 24 inches. Adjusting the Back Angle WARNING Wheelchairs with TRRO Only - Adjusting the back angle from the factory setting will void TRRO compliance. After adjusting the back angle, DO NOT transport an occupied wheelchair in a motor vehicle of any kind.

  • Page 57: Adjusting The Back Height

    SECTION 4—SEAT Adjusting the Back Height Contoura Backs ‐ There is no height adjustment available for wheelchairs with Contoura  backs. Upholstered Backs ‐ The back canes MUST be replaced to adjust the back height for  upholstered backs. Refer to Removing/Installing the Back Canes. Removing/Installing the Back Canes NOTE: For this procedure, refer to FIGURE 4.16 on page 58. NOTE: Existing hardware will be reused. NOTE: Take note of position and orientation of mounting hardware for reinstallation. Removing 1. Remove armrest from the wheelchair. Refer to Removing/Installing Flip Back Armrest  on page 69. 2. For proper installation, note the mounting position of the upper hex screw securing  the cane bracket to the back cane. 3. Remove the upper hex screw, washer and locknut securing the cane bracket to the  back cane. 4. Remove the lower hex screw, washer and locknut securing the cane bracket to the back  cane. 5. Remove the back cane from the wheelchair. 6. 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.

  • Page 58: Removing/Installing The Spreader Bar

    SECTION 4—SEAT Back Cane Locknuts Cane Bracket Upper Hex Screw Washers Lower Hex Screw Slot FIGURE 4.16 Removing/Installing the Back Canes Removing/Installing the Spreader Bar NOTE: For this procedure, refer to FIGURE 4.17. 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.

  • Page 59: Adjusting Spreader Bar Width

    SECTION 4—SEAT Adjusting Spreader Bar Width NOTE: For this procedure, refer to FIGURE 4.18. 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 58. 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%. Coved Spacer Tube Screws Handle Coved Spacer Handle Mounting Hole Coved Spacer Locknuts Coved Spacer Handle Mounting Handle Hole DETAIL “A”...

  • Page 60: Replacing The Seat Positioning Strap

    SECTION 4—SEAT Replacing the Seat Positioning Strap NOTE: For this procedure, refer to FIGURE 4.19. 1. Remove the seat cushion from the seat pan. 2. Remove the flip back armrests. Refer to Removing/Installing Flip Back Armrest on  page 69. 3. Remove mounting screw, washer, and lock nut that secure the seat positioning strap  to the seat frame. 4. Position a new seat positioning strap on the seat frame. 5. Reinstall the mounting screw, washer, and lock nut that secure the seat positioning  strap to the seat frame. Lock Washer Mounting Screw Seat Positioning Strap FIGURE 4.19 Replacing the Seat Positioning Strap ® Pronto M91™and M94™ Part No.

  • Page 61: Van Seat Service Procedures

    SECTION 4—SEAT Van Seat Service Procedures Adjusting the Back Angle NOTE: For this procedure, refer to  FIGURE 4.20. Back 1. Lift up on the release handle and adjust  back to desired angle. 2. Let go of the release handle to lock the  back in position. Release Handle FIGURE 4.20 Adjusting the Back Angle Adjusting the Seat Position on Van Seat Frame WARNING DO NOT adjust the rear seat posts higher than the front seat posts. If wheelchair is equipped with power tilt only or the Formula PTO Plus seating sys- tem, refer to Power Tilt only for Pronto M71 and M91 Owner’s Manual, Part Num- ber 1118362 or to Formula PTO Plus Powered Seating Service manual, part...
  • Page 62 SECTION 4—SEAT Van Seat Spacer Seat Frame Coved Washer Mounting Hole (Seat Frame) Coved Washer Bolt DETAIL “A” Front of seat 1-inch Back 1-inch Back Standard Seat Position Standard Seat Position 2-inch Forward 2-inch Forward These mounting holes are 1-inch Back 1-inch Back not used Standard Seat Position...

  • Page 63: Adjusting The Van Seat Back Depth

    SECTION 4—SEAT Adjusting the Van Seat Back Depth NOTE: For this procedure, refer to FIGURE 4.22. 1. Remove the seat assembly. Refer to Removing/Installing or Tilting the Seat Assembly  on page 35. 2. Remove the van seat from the seat frame. Refer to Adjusting the Seat Position on Van  Seat Frame on page 61.  3. Remove the six mounting screws that secure the seat back to the seat. 4. Align the seat mounting holes with the seat back mounting holes in the desired  mounting position (Detail “A” of FIGURE 4.22). 5. Using the six mounting screws, secure the seat back to the seat. Securely tighten. 6. Reinstall the van seat onto the seat frame. Refer to Adjusting the Seat Position on Van  Seat Frame on page 61.  7. Reinstall the seat assembly. Refer to Removing/Installing or Tilting the Seat Assembly  on page 35. DETAIL “A” - SEAT BACK MOUNTING POSITIONS Seat Back Forward Position Seat Back Mounting...

  • Page 64: Removing/Installing Drive Lockout Switch Mounting Hardware And Cable (Full Recline Van Seat Only)

    SECTION 4—SEAT Removing/Installing Drive Lockout Switch Mounting Hardware and Cable (Full Recline Van Seat Only) NOTE: For this procedure, refer to FIGURE 4.23 on page 65. NOTE: Reverse this procedure to install the drive lockout switch mounting hardware. 1. Place the wheelchair in a well ventilated area where work can be performed without  risking damage to carpeting or floor covering. 2. Verify the joystick ON/OFF switch is in the OFF position and disconnect joystick cable. 3. Lift up on the release handle and recline seat back to 170°. 4. Remove the two mounting screws and washers securing the drive lockout switch  cable to the seat. 5. Lift up on the release handle and return the seat to the upright position. 6. Remove the seat. Refer to Removing/Installing or Tilting the Seat Assembly on  page 35. 7. Remove the batteries. Refer to Installing/Removing the Batteries on page 103.  NOTE: By this step the rear and top shrouds should be open and the drive lockout switch cable  should be disconnected (connector is located next to charger). NOTE: Tie‐wraps that secure the auxiliary power connectors and drive lockout cable are also used ...
  • Page 65 SECTION 4—SEAT Seat Back DETAIL “A” NOTE: Switch sensor  mounting plate shown  Tie-Wrap removed for clarity  ONLY. DO NOT  Wheelchair remove the switch  Frame sensor mounting plate. Auxiliary Drive Lockout Power Washers Switch Cable Connectors (to Seat) Mounting Screws Tie-wraps Magnet Switch Sensor Charger Mounting Cable Plate Washers Charger Drive Lockout Drive Lockout Locknuts Switch Cable Drive Lockout...

  • Page 66: Section 5-Arms

    SECTION 5—ARMS SECTION 5—ARMS 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. Arm Service Procedures for Van Seat Removing/Installing Van Seat Arm NOTE: For this procedure, refer to FIGURE 5.1.

  • Page 67: Adjusting Van Seat Arm Angle

    SECTION 5—ARMS Adjusting Van Seat Arm Angle WARNING Pinch point may occur when adjusting the arm angle position (Detail “A”). NOTE: For this procedure, refer to FIGURE 5.2. 1. Lift up the armrest. 2. Loosen the jam nut. 3. Adjust the socket screw up or down to the desired arm angle position.  4. Tighten the jam nut. 5. To determine the same angle for the opposite armrest, count the exposed threads after  the jam nut has been tightened. 6. Repeat STEPS 1‐4 for opposite armrest, if necessary. Adjusting Van Seat Arm Height (Adjustable Height Arms Only) NOTE: For this procedure, refer to FIGURE 5.2.

  • Page 68: Replacing Van Seat Armrest Pad Assembly

    SECTION 5—ARMS Replacing Van Seat Armrest Pad Assembly NOTE: For this procedure, refer to FIGURE 5.3. 1. If necessary, remove the joystick. Refer to Disconnecting/Connecting the Joystick on  page 112. 2. Remove the mounting screw, washers and locknut that secure the existing armrest pad  assembly to the arm post. 3. Position the new armrest pad assembly on the armrest post and secure with the  mounting screw, washers, and locknut. Refer to FIGURE 5.3 for correct hardware  orientation.  4. If necessary, install the joystick. Refer to Disconnecting/Connecting the Joystick on  page 112. 5. Repeat STEPS 2‐4 for the opposite armrest plate, if necessary. Washer Armrest Pad Assembly Mounting Screw Arm Post Locknut Washers FIGURE 5.3 Replacing Van Seat Armrest Pad Assembly ®...

  • Page 69: Arm Service Procedures For Asba And Adjustable Asba Seat

    SECTION 5—ARMS Arm Service Procedures for ASBA and Adjustable ASBA Seat WARNING Make sure the flip back armrest release levers and height adjustment levers are in the locked position before using the wheelchair. Removing/Installing Flip Back Armrest NOTE: For this procedure, refer to FIGURE 5.4. NOTE: Flip back armrest release lever must be in unlocked position when placing armrest into the  arm sockets.

  • Page 70: Adjusting The Flip Back Armrest

    SECTION 5—ARMS Adjusting the Flip Back Armrest NOTE: For this procedure, refer to FIGURE 5.5. 1. Unlock top of flip back armrest by pulling height adjustment lever into the up  (horizontal) position. 2. Adjust top of the flip back armrest to the desired height. 3. Lock top of flip back armrest by pushing height adjustment 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. Height Height Adjustment Locked Adjustment Lever (Down - Vertical) Lever Unlocked (Up - Horizontal) Flip Back Armrest NOTE: ASBA armrest shown.  Front Arm Socket ADJUSTABLE ASBA armrest works the ...

  • Page 71: Section 6-Front Riggings

    SECTION 6—FRONT RIGGINGS SECTION 6—FRONT RIGGINGS 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. DO NOT stand on the front riggings, otherwise damage may occur. When getting in or out of the wheelchair, make sure that the footplates on the front riggings are in the upward position or moved out of the way.

  • Page 72: Adjusting Footrest Height

    SECTION 6—FRONT RIGGINGS Adjusting Footrest Height Model PHWH93 NOTE: For this procedure, refer to FIGURE 6.2. 1. Remove any accessories from the footrest(s). 2. Remove the footrest from the  Footrest wheelchair. Refer to Installing/ Support Locknut Removing Front Riggings on page 71. Coved Washer NOTE: Lay footrest on a flat surface to simplify  performing procedure. Hex Bolt 3. Remove the hex bolt, coved washers  and locknut that secure the lower  Coved footrest to the footrest support. Washer Lower 4. Reposition the lower footrest to the  Footrest desired height. 5. Reinstall hex bolt, coved washers and  locknut that secure lower footrest to  FIGURE 6.2 Adjusting Footrest Height - footrest support. Tighten securely.

  • Page 73: Replacing Heel Loops

    SECTION 6—FRONT RIGGINGS Replacing Heel Loops NOTE: For this procedure, refer to FIGURE 6.4. 1. Note the position of hex bolt, coved  Locknut Coved washers and locknut for reinstallation. Washer 2. Remove the hex bolt, coved washers  Coved Hex Bolt and locknut that secure the lower  Washer footrest to the footrest support. Phillips Bolt Footrest 3. Remove the lower footrest. Support Spacer 4. Remove the phillips bolt, spacer and  locknut that secure the existing heel  Lower Heel Loop Footrest loop to the lower footrest. 5. Slide the existing heel loop off the  Locknut lower footrest.

  • Page 74: Adjusting/Replacing Telescoping Front Rigging Supports

    SECTION 6—FRONT RIGGINGS Adjusting/Replacing Telescoping Front Rigging Supports Van Style Seats NOTE: For this procedure, refer to FIGURE 6.6 on page 75. NOTE: When adjusting the telescoping front rigging support depth, ensure the footplate does not  interfere with the caster wheel rotation. NOTE: Telescoping front rigging supports can be extended up to 2‐inches from the wheelchair  frame in 1‐inch increments. This adjustment does not affect seat depth. NOTE: When installing the front riggings support tubes, ensure that the hinge pins are on the  outside of the chair facing away from the seat frame.  1. Remove the seat. Refer to Removing/Installing or Tilting the Seat Assembly on  page 35. 2. Remove the two socket bolts, spacers and locknuts that secure telescoping front  rigging support to the seat frame. 3. Perform one of the following: • Adjusting ‐ i. Align the appropriate mounting hole of the telescoping front rigging support  with the middle mounting hole in the seat frame tubes to achieve the desired  depth. Refer to Front Rigging Support Mounting Positions in FIGURE 6.6. • Replacing ‐ i. Remove the existing telescoping front rigging support from the wheelchair  frame. ii.

  • Page 75: Asba

    SECTION 6—FRONT RIGGINGS Not Used Socket Bolts Middle Mounting Holes Telescoping Front Rigging Support Seat Mounting Spacer Frame Holes Locknuts Hinge Not Used Pins FRONT RIGGING SUPPORT MOUNTING POSITIONS STANDARD POSITION 1-INCH OUT 2-INCHES OUT 18 & 20-Inches 22 & 24-Inches 18 &...

  • Page 76: Adjustable Asba

    SECTION 6—FRONT RIGGINGS Mounting Screws Spacer Telescoping Front Rigging Support Locknut Spacer Locknut FIGURE 6.7 Adjusting/Replacing Telescoping Front Rigging Supports Adjustable ASBA WARNING If the telescoping tubes need to be extended greater than two inches, then the seat MUST be repositioned rearward to ensure stability - otherwise personal injury and/ or damage to the wheelchair and surrounding property may result.
  • Page 77 SECTION 6—FRONT RIGGINGS Side Rail Spacers Cap Screws Side Rail Threaded Blocks Telescoping Front Tube Cap Screws Spacers FIGURE 6.8 Adjusting/Replacing Telescoping Front Rigging Supports - Adjustable ASBA ® Part No. 1125038 Pronto M91™and M94™...

  • Page 78: Section 7-Footboard Assembly

    SECTION 7—FOOTBOARD ASSEMBLY SECTION 7—FOOTBOARD ASSEMBLY 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 79: Adjusting The Footboard Assembly

    SECTION 7—FOOTBOARD ASSEMBLY Wheelchair Frame DETAIL “A” - Bottom View of Mounting Footboard Hole Quick Release Pin Quick Release Detent Ball Detent Balls Footboard Assembly Outer Edge of Tube FIGURE 7.1 Removing/Installing the Footboard Assembly Adjusting the Footboard Assembly Angle NOTE: For this procedure, refer to FIGURE 7.2.

  • Page 80: Depth

    SECTION 7—FOOTBOARD ASSEMBLY Depth NOTE: For this procedure, refer to FIGURE 7.3. 1. Remove the quick release pin that secures the footboard assembly to the wheelchair  frame. WARNING Make sure the detent balls are engaged with the outer edge of the tube - otherwise, injury and/or damage may result. 2. Adjust footboard to one of three mounting positions. 3. Install the quick release pin. Make sure the detent balls are engaged with the outer  edge of the tube (Detail “A” of FIGURE 7.3). Wheelchair Frame Mounting DETAIL “A”...

  • Page 81: Section 8-Wheels

    SECTION 8—WHEELS SECTION 8—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. Replacing the Front/Rear Casters NOTE: For this procedure, refer to FIGURE 8.1.

  • Page 82: Adjusting Caster Assembly

    SECTION 8—WHEELS Adjusting Caster Assembly NOTE: For this procedure, refer to FIGURE 8.2. 1. Lift front edge of the dust cover up and remove from head tube. 2. To properly tighten caster assembly and guard against flutter, perform the following  check: NOTE: Two people are recommended to perform this STEP ‐ one to tip wheelchair back and one to  inspect/adjust the caster assembly. A. Tip back the wheelchair. B. Pivot both caster assemblies to top of their arc simultaneously. C. Let casters drop to bottom of arc (casters should swing once to on ‐side, then  immediately rest in a straight downward position). D. Adjust locknuts according to freedom of caster swing. 3. Test wheelchair for maneuverability. 4. Readjust locknuts if necessary, and repeat STEPS 2‐3 until correct. 5. Snap dust cover into the caster headtube, ensuring that the tabs are under the plastic  side shrouds. Tabs Dust Cover (Front Edge) Locknut Washer Head Tube Washer Fork NOTE: Components ...

  • Page 83: Removing/Installing The Front/Rear Caster Assemblies

    SECTION 8—WHEELS Removing/Installing the Front/Rear Caster Assemblies NOTE: For this procedure, refer to  NOTE: Ensure tabs are  Dust Cover FIGURE 8.3. under the side shrouds  Headtube NOTE: Front and rear caster assemblies are  when installing. replaced in the same manner. Tabs Removing Dust Cover 1. Remove the dust cover. 2. Remove locknut and two washers  Locknut securing caster assembly to the  headtube. Washer Side Headtube Shroud Installing NOTE: Components  1. Insert threaded post of caster assembly  Washer exploded for clarity.  into headtube. There is no need to ...

  • Page 84: Removing/Installing The Drive Wheel

    SECTION 8—WHEELS Removing/Installing the Drive Wheel NOTE: For this procedure, refer to FIGURE 8.5. WARNING DO NOT use your wheelchair unless it has the proper tire pressure (p.s.i.). DO NOT overinflate the tires. Failure to follow these suggestions may cause the tire to explode and cause bodily harm. If tires are pneumatic, replacement of tire or tube MUST be performed by a quali- fied technician.

  • Page 85: Removing/Installing The Drive Wheel Hub

    SECTION 8—WHEELS Removing/Installing the Drive Wheel Hub NOTE: For this procedure, refer to FIGURE 8.6 on page 86. Removing 1. Remove the drive wheel from the wheelchair. Refer to Removing/Installing the Drive  Wheel on page 84. 2. Remove hub and mounting hardware. Perform one of the following: • All M91 300 lbs Limit Wheelchairs and 400 lbs Wheelchairs Built Before 12/19/03: i. Fold down tab of existing locking tab washer (Detail “A” of FIGURE 8.6). ii. Remove mounting bolt and locking tab washer (Detail “B” of FIGURE 8.6).  Discard existing locking tab washer. iii. Remove the existing wheel hub and keystock from the drive shaft. • All M94 Wheelchairs and 400 lbs M91 Wheelchairs built after 12/19/03 ‐ Remove  locknut, washer, keystock and existing drive wheel hub from the drive shaft. Installing CAUTION DO NOT apply more than a 1-inch (in length) thin film of anti-seize compound to the drive shaft.
  • Page 86 SECTION 8—WHEELS ii. Using the mounting bolt, washer and new locking tab washer, secure the wheel  to the drive shaft (Detail “B” of FIGURE 8.6). iii. Fold one tab of the locking tab washer UP so that the tab rests against one side  of the mounting bolt (Detail “A” of FIGURE 8.6) • All M94 Wheelchairs and 400 lbs M91 Wheelchairs built after 12/19/03 ‐ Reinstall  the washer and locknut and torque locknut to 45 ft‐lbs (540 in‐lbs). 7. Reinstall the drive wheel assembly to the wheelchair. Refer to Removing/Installing the  Drive Wheel on page 84. 8. Repeat procedure for the opposite side of the wheelchair, if necessary. M91 Wheel Hub Hardware for all 300 lbs Limit Wheelchairs and 400 lbs Wheelchairs Built Before 12/19/03 DETAIL “A” DETAIL “B” NOTE: Locking tab washer shown with all tabs folded ...

  • Page 87: Replacing The 2-Piece Wheel Rim And/Or The Foam Filled Or Pneumatic Tires

    SECTION 8—WHEELS Replacing the 2-Piece Wheel Rim and/or the Foam Filled or Pneumatic Tires NOTE: For this procedure, refer to FIGURE 8.7. NOTE: When replacing the 2‐piece wheel rim, DO NOT remove tire. Replacement 2‐piece wheel  rims are shipped assembled with a new tire. Refer to Removing/Installing the Drive Wheel on  page 84 to remove the existing drive wheel and install the new 2‐piece wheel rim and tire. WARNING When replacing the hub of a pneumatic tire, ALWAYS deflate tire before removing/installing hub - otherwise, injury or damage may occur. Failure to observe this warning can result in sudden, violent rim separation and possible injury.

  • Page 88: Section 9-Shrouds/Frame

    SECTION 9—SHROUDS/FRAME SECTION 9—SHROUDS/FRAME 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. Removing/Installing the Shrouds NOTE: For this procedure, refer to FIGURE 9.1 on page 90.
  • Page 89 SECTION 9—SHROUDS/FRAME • Rear Shroud ‐ M91 Before 7/14/03 ‐ Perform the following: NOTE: The rear shroud on the M91 built before 7/14/03 can be opened and closed with out  being removed from the wheelchair. The rear shroud should be removed only if being replaced. To open the rear shroud refer to STEP ii below.  i. Open rear shroud by turning the knob 90° until detent catch is felt, then slide  rear shroud toward the rear casters and lift top edge away from the rear of the  wheelchair frame (Detail “C” of FIGURE 9.1). ii. Grasp the bottom edges of the rear shroud sides. iii. Gently pull the rear shroud sides away from the channels in the rear frame until  the rear shroud mounting pins are clear of the wheelchair frame and remove  the rear shroud from the wheelchair frame.  • Rear Shroud ‐ M91 After 12/18/03 and M94 Wheelchairs ‐ Perform the following: i. Remove the two mounting screws and locknuts securing the charger port to the  rear shroud. ii. Remove the mounting bolt and washer securing the rear shroud to the base  frame and remove rear shroud from base frame (Detail “C” of FIGURE 9.1). ® Part No. 1125038 Pronto M91™and M94™...
  • Page 90 SECTION 9—SHROUDS/FRAME DETAIL “A” - Top Shroud, Side Shrouds, Shrouds Plates and Front Shroud Shroud Mounting Shorter Screws Mounting Screw Side Frame Mounting Assembly Screw Front Shroud Side Shroud DETAIL “C” Hood and Loop NOTE: Rear Shroud After 7/14/03. Shroud Plate Strips Mounting Screws and Washers DETAIL “B”...

  • Page 91: Removing/Installing The Pivot Tube

    Removing/Installing the Walking Beam and/or SureStep Springs WARNING Replacement of the walking beam and or the SureStep spring MUST be performed by Invacare service personnel ONLY - otherwise injury or damage may result. ® Part No. 1125038 Pronto M91™and M94™...

  • Page 92: Removing/Installing The Walking Beam Assembly, Stability Lock Assembly And/Or Swing Arm

    SECTION 9—SHROUDS/FRAME Removing/Installing the Walking Beam Assembly, Stability Lock Assembly and/or Swing Arm NOTE: For this procedure, refer to FIGURE 9.3 on page 94. NOTE: Take note of position and orientation of the stability lock, swing arm and mounting  hardware before removal. Removing 1. Remove the seat. Refer to Removing/Installing or Tilting the Seat Assembly on  page 35. 2. Remove the batteries. Refer to Installing/Removing the Batteries on page 103. 3. Remove the drive wheel. Refer to Removing/Installing the Drive Wheel on page 84.  4. Remove the side shroud. Refer to Removing/Installing the Shrouds on page 88. 5. Remove the motor. Refer to Removing/Installing the Motor on page 98. CAUTION Use caution when removing tension from the extension spring - otherwise, injury may result.

  • Page 93: Installing

    SECTION 9—SHROUDS/FRAME ii. Remove the motor rack from the walking beam. • Removing the Swing Arm ‐  i. Remove the long shoulder screw and locknut securing the swing arm to the  wheelchair frame. ii. Remove the swing arm from the wheelchair frame. Installing 1. Perform one of the following: • Installing the Stability Lock Assembly ONLY ‐  i. Ensure compression spring is positioned in the middle hole of the motor rack. ii. Align the motor rack under the walking beam (Detail “A” of FIGURE 9.3). iii. Using two shoulder screws and one washer, secure the motor rack to the walking  beam. • Installing the Swing Arm ‐  i. Align swing arm with wheelchair frame. ii. Insert long shoulder screw through swing arm and wheelchair frame and secure  using a locknut. Securely tighten.  2. Align pivot link front mounting hole with wheelchair frame mounting hole. 3. Using the front mounting screw, two nylon washers, O‐ring, cupped washer and locknut,  secure the pivot link to the wheelchair frame. 4. Using the shoulder screw and locknut, secure the pivot link to the swing arm mounting  hole. 5. Align the pivot rack from the pivot link. 6.
  • Page 94 SECTION 9—SHROUDS/FRAME 11. Use a screwdriver to place the extension spring onto the spring mount on the pivot  plate. 12. Install the motor. Refer to Removing/Installing the Motor on page 98. 13. Install the batteries. Refer to Installing/Removing the Batteries on page 103. 14. Install the side shroud. Refer to Removing/Installing the Shrouds on page 88. 15. Install the drive wheel. Refer to Removing/Installing the Drive Wheel on page 84. 16. Install the seat. Refer to Removing/Installing or Tilting the Seat Assembly on page 35.  Swing Long Shoulder Frame Screw Mounting Hole Locknuts Rear Frame Mounting Hole Pivot Mounting Rack Screws Front Mounting Screw Shoulder Walking Beam Assembly Pivot Screw...

  • Page 95: Removing/Installing The Traction Control Device

    SECTION 9—SHROUDS/FRAME Removing/Installing the Traction Control Device NOTE: For this procedure, refer to FIGURE 9.4. NOTE: Take note of position and orientation of the traction control device and mounting hardware  before removal. Removing 1. Remove the batteries. Refer to Installing/Removing the Batteries on page 103. 2. Remove the seat. Refer to Removing/Installing or Tilting the Seat Assembly on  page 35. 3. Remove the side shroud. Refer to Removing/Installing the Shrouds on page 88. CAUTION Use caution when removing the extension spring from the swing arm spring mount - otherwise, injury may result. 4.

  • Page 96: Installing

    SECTION 9—SHROUDS/FRAME Installing 1. Align pivot plate mounting hole with wheelchair frame mounting hole. 2. Using the mounting screw and two nylon washers secure the pivot plate to the  wheelchair frame. 3. Put the torsion spring pin into the hole in the pivot plate. Put the other end of the  torsion spring around the spring mount on the pivot plate. 4. Rotate the swing arm back into position. 5. Place the extension spring onto the spring mount on the motor mount bracket. CAUTION Use caution when installing the extension spring onto the spring mount on the pivot plate - otherwise, injury may result. 6. Put the extension spring onto the pivot plate. 7. Install the batteries. Refer to Installing/Removing the Batteries on page 103. 8.

  • Page 97: Section 10-Motors

    SECTION 10—MOTORS SECTION 10—MOTORS WARNING After ANY adjustments, repair or service and BEFORE use, make sure that all attaching hardware is tightened securely. ALWAYS turn the wheelchair power OFF BEFORE repairing or servicing the wheelchair, otherwise injury or damage may occur. Engaging/Disengaging Motor Release Lever WARNING DO NOT engage or disengage the motor release lever until the On/Off switch on...

  • Page 98: Removing/Installing The Motor

    SECTION 10—MOTORS Removing/Installing the Motor NOTE: For this procedure, refer to FIGURE 10.2. NOTE: Reverse this procedure to install the motor. NOTE: Removing the drive wheel, while not necessary (unless replacing the motor), may improve  access to the motor. Refer to Removing/Installing the Drive Wheel on page 84. 1. Remove the seat. Refer to Removing/Installing or Tilting the Seat Assembly on  page 35. 2. Remove the side shroud. Refer to Removing/Installing the Shrouds on page 88. 3. Disconnect the motor lead (not shown). NOTE: Long mounting screws are used on the same side of the motor as the drive shaft.    4. Remove the two motor release pins securing the motor plate to the walking beam and  remove the motor assembly from the walking beam. 5. Remove the three long mounting screws and three short mounting screws securing  the motor to the motor plate (FIGURE 10.2). 6. If necessary, repeat STEPS 2‐5 for the motor on the other side. NOTE: Drive wheel not shown. Walking Beam Motor Release Pins Three Long Mounting Screws Three Short Mounting Screws Motor...

  • Page 99: Inspecting/Replacing Motor Brushes

    SECTION 10—MOTORS Inspecting/Replacing Motor Brushes NOTE: For this procedure, refer to FIGURE 10.3 on page 100. NOTE: It is very important to note which way the brush comes out of the motor. The brush MUST  be placed into the motor exactly the same way to ensure good contact with the  commutator. 1. Turn power off. 2. Remove the motor. Refer to Removing/Installing the Motor on page 98. NOTE: There are four motor brushes on M91/M94 motors located under the brush caps on the  motor housing. If these caps are hard to remove they are either overtightened or the motor has  become very hot. Let motors cool. If caps still cannot be removed, it is recommended that the motor  be sent to Invacare Technical Services for inspection/repair. 3. Remove the brush cap securing the motor brush into the motor housing. 4. Remove the motor brush and perform the following:  A. Inspect the commutator (not shown) for damage. B. Inspect the motor brush thoroughly for excessive wear or chips in the brush and  perform one of the following: • If motor brush is in good condition, (i.e., the end of the brushes are smooth and  shiny), reinstall existing brush. • If motor brush is in bad condition, brush is worn or damaged, discard  immediately and install new brush. 5. Reinstall motor brush and brush cap into the motor housing. 6. Repeat STEPS 3‐5 until all four motor brushes have been inspected/replaced. 7. Reinstall the motor. Refer to Removing/Installing the Motor on page 98.
  • Page 100 NOTE: This procedure must be performed with little or no load on the motor. A. Put the wheelchair on blocks so that the drive wheels do not contact the ground. NOTE: For steps B and D, use a rubber band to hold the driver control in the direction needed  or program the chair for latched driving. Refer to the electronics manual for latched  programming instructions. B. Run the motors forward for one hour. C. Turn motors off and allow 30 minutes for motors to cool off. D. Run the motors in reverse for one hour. E. When process is complete, remove wheelchair from blocks and test drive the  wheelchair. NOTE: If wheelchair still does not perform properly, call Invacare Technical Service at 1‐800‐ 832‐4707. Brush Caps Motor Brush Commutator Brush (Inside Motor Housing) Motor Housing FIGURE 10.3 Inspecting/Replacing Motor Brushes ® Pronto M91™and M94™...

  • Page 101: Electro-Mechanical Parking Brake Testing

    10.4). 2. Set the digital multimeter to read ohms (Ω). 3. Measure the resistance between the two brake contacts. A normal reading is between  45‐100 ohms depending on the motor. A reading of 0 ohms (Ω) or a very high reading;  i.e., MEG ohms 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 controller. DO NOT connect a shorted electro-mechanical brake to a good control- ler module. A shorted brake MUST be replaced.

  • Page 102: Section 11-Batteries

    Avoid storage or use near external flame or combustible products. DO NOT tip the batteries. Keep the batteries in an upright position. Invacare strongly recommends that battery installation and battery replacement always be done by a qualified technician. After ANY adjustments, repair or service and BEFORE use, make sure all attaching hardware is tightened securely - otherwise injury or damage may result.

  • Page 103: Installing/Removing The Batteries

    SECTION 11—BATTERIES Installing/Removing the Batteries NOTE: For this procedure, refer to FIGURE 11.1 on page 104 and FIGURE 11.2 on page 105. NOTE: Have the following tools available: TOOL COMMENTS Battery Lifting Strap Supplied 1/2-inch (6 pt) Box Wrench Not Supplied 7/16-inch (6pt) Box Wrench Not Supplied 3/8-inch (6pt) Box Wrench Not Supplied Diagonal Cutters Not Supplied NOTE: Wheelchairs with MKIV Electronics: Wiring harness used with the front battery has two  connectors, one to the rear battery wiring harness and one to the Controller cable. NOTE: Wheelchairs with MKIV Electronics: Wiring harness used with the rear battery has one ...
  • Page 104 SECTION 11—BATTERIES • Batteries Without Built In Lifting Strap ‐ Use the battery lifting strap to position  battery into the battery tray. When battery is in proper position, remove lifting  strap (Detail “B” of FIGURE 11.1). 8. Using the battery retaining strap, secure the two batteries into the battery tray. 9. If necessary, connect the wiring harness to the two batteries. Refer to Connecting/ Disconnecting the Battery Wiring Harness on page 106. 10. Reconnect right and left motor leads to allow access to the FRONT of the battery tray,  if disconnected in STEP 5. DETAIL “A” - BATTERIES WITH BUILT-IN DETAIL “B” - BATTERIES WITHOUT LIFTING STRAPS BUILT-IN LIFTING STRAPS Built-in Lifting Battery Lifting Straps Straps Rear Battery Front Battery Battery...

  • Page 105: Removing

    SECTION 11—BATTERIES DETAIL “A” MKIV Electronics RED Connector from Front of Wheelchair Battery to Controller RED Controller Connector Front Battery BLACK Front NEGATIVE (-) Tie Wrap Battery Terminal Mounting Screw, Nut and Fuse Hardware RED Front POSITIVE (+) (Terminal Cap Shown) Battery Terminal Mounting Screw, Nut and Fuse Hardware (Terminal Cap Shown)

  • Page 106: Connecting/Disconnecting The Battery Wiring Harness

    SECTION 11—BATTERIES 2. Verify the joystick ON/OFF switch is in the OFF position and disconnect joystick.  Refer to Disconnecting/Connecting the Joystick on page 112. 3. Perform one of the following: • Wheelchairs without Formula PTO Plus ‐ Remove the seat. Refer to Removing/ Installing or Tilting the Seat Assembly on page 35. • Wheelchairs with Formula PTO Plus ‐ Tilt the seat back. Refer to Removing/ Installing or Tilting the Seat Assembly on page 35. 4. Remove the top shroud. Refer to Removing/Installing the Shrouds on page 88. 5. If necessary, disconnect right and left motor leads to allow access to the front of the  battery tray. 6. Disconnect the front battery from controller (RED connector). Refer to FIGURE 11.2. 7. Move aside the motor leads and controller cable to allow unobstructed access to the  front of the battery tray. 8. Disconnect the rear battery from the front battery (RED and BLACK connectors). Refer  to FIGURE 11.2. 9. If necessary, disconnect the wiring harness from batteries. Refer to Connecting/ Disconnecting the Battery Wiring Harness on page 106. 10. Unfasten the retaining strap that secures the two batteries in the battery tray. NOTE: Perform this section on one battery at a time starting with the FRONT battery. Repeat  STEP 10 to remove remaining battery from battery tray. 11.

  • Page 107: Connecting

    SECTION 11—BATTERIES NOTE: Both the front and rear wiring harnesses are shipped with the POSITIVE (+) RED battery  cable and mounting screw connected. Use the exposed, threaded portion of the mounting screw to  secure the POSITIVE (+) RED cable to the POSITIVE (+) terminal. WARNING DO NOT remove fuse or mounting hardware from POSITIVE (+) RED battery cable/mounting screw. All battery terminal covers (two [2] on the front battery and two [2] on the rear battery) MUST be installed prior to use. Connecting 1.
  • Page 108 SECTION 11—BATTERIES MKIV Electronics POSITIVE (+) Battery Cable, Mounting Screw with Fuse Hardware Washer NEGATIVE (-) Battery Cable POSITIVE (+) Mounting Screw Battery Terminal Tie-Wrap Battery Tie-Wrap NEGATIVE (-) Battery Terminal and MK6i Electronics POSITIVE (+) NEGATIVE (-) Battery Cable, Battery Cable Mounting Screw with Fuse Hardware...

  • Page 109: Replacing The On-Board Battery Charger

    SECTION 11—BATTERIES Replacing the On-Board Battery Charger WARNING DO NOT replace the battery charger fuse with anything other than a 250V 6.3 Amp fuse. Otherwise, equipment damage and/or personal injury may occur. DO NOT attempt to remove the battery charger with power applied to the wheel- chair.
  • Page 110 SECTION 11—BATTERIES • M91 After 3/31/04 and M94 wheelchairs (Detail “B” of FIGURE 11.4)  i. Remove the front shroud. Refer to Removing/Installing the Shrouds on  page 88. ii. Remove the three tie‐wraps securing the charger cable to the wheelchair frame. iii. Disconnect the charger cable from the AUX port of the controller. iv. Remove the two mounting screws securing the charger to the wheelchair  frame. 4. Remove charger from wheelchair frame. 5. Place the new battery charger against the wheelchair frame. 6. Perform one of the following: • M91 Before 12/19/03 (Detail “A” of FIGURE 11.4)  i. Using the hook and loop strap, secure the charger to the wheelchair frame. ii. Route the battery charger cable to the right side (from the rear of the  wheelchair) of the battery charger body. iii. Connect the battery charger cable from the controller charger cable. iv. Close the rear shroud by tilting the rear shroud towards the wheelchair and  push forward. Turn the knob 90° until detent is felt to lock rear shroud. • M91 Built between 12/18/03 to 4/1/04 (Detail “A” of FIGURE 11.4) i. Using the hook and loop strap, secure the charger to the wheelchair frame. ii.
  • Page 111 SECTION 11—BATTERIES DETAIL “a” DETAIL “B” Battery Battery Mounting Battery Controller Charger Cable Charger Cable Screws Charger Charger Cable Controller Wheelchair Hook and Frame Loop Strips Battery Charger Wheelchair Frame FIGURE 11.4 Replacing the On-Board Battery Charger ® Part No. 1125038 Pronto M91™and M94™...

  • Page 112: Section 12-Electronics

    SECTION 12—ELECTRONICS SECTION 12—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 113: Connecting

    SECTION 12—ELECTRONICS Connecting MKIV RII/MK Joysticks NOTE: For this procedure, refer to FIGURE 12.1 on page 114. 1. Align the joystick connector with the controller connector.  2. Secure the joystick connector to the controller connector using the thumb screws on  the controller connector. MKIV “A” Joysticks NOTE: For this procedure, refer to FIGURE 12.1 on page 114. 1. Align the joystick connector with the controller connecter.  2. Secure the joystick connector to the controller connector using the threaded collar on  the controller connector. WARNING The excess joystick cable must be coiled and tie-wrapped to the rear of the seat frame to ensure that cable does NOT become entangled or damaged during normal operation of seating system - otherwise injury or damage may result.
  • Page 114 SECTION 12—ELECTRONICS MKIV RII/MK Joysticks MKIV “A” Joystick Thumb Screws Joystick Connector Controller Connector Controller Joystick Connector Connector FIGURE 12.1 Disconnecting/Connecting the Joystick - MKIV RII/MK5 Joysticks and MKIV “A” Joysticks ® Pronto M91™and M94™ Part No. 1125038...
  • Page 115 SECTION 12—ELECTRONICS SPJ+ Joysticks NOTE: For this procedure, refer to FIGURE 12.2. 1. Align the joystick connector with the  controller connector. Light Grey Collar 2. Secure the joystick connector to the  controller connector using the thumb  Controller screws on the controller connector. Connector Joystick Connector WARNING The excess joystick cable must be coiled and tie-wrapped to the rear of the seat frame to ensure that cable does NOT FIGURE 12.2 Disconnecting/Connecting become entangled or damaged during the Joystick - SPJ+ Joysticks...

  • Page 116: Repositioning The Joystick

    SECTION 12—ELECTRONICS Repositioning the Joystick ASBA or Adjustable ASBA Model NOTE: For this procedure, refer to FIGURE 12.4. 1. Turn the lever on the adjustment lock to release the adjustment lock from joystick  mounting tube. 2. Remove the joystick from the wheelchair. 3. Remove the three hex screws that secure joystick mounting bracket, the threaded hole  half clamp and the opened hole half clamp to the arm tube. 4. Reposition the threaded hole half clamp and opened hole half clamp on the opposite  arm tube. Make sure threaded hole half clamp is on the inside of arm tube. 5. While holding the two half clamps, install the front hex screw into the two half clamps.  Securely tighten. 6. Line up mounting holes of the joystick mounting bracket with the mounting holes in  the two half clamps. 7. Secure the joystick mounting bracket to the two half clamps with the remaining two  hex screws. 8. Slide tube through the bracket to the desired position. 9. Slide adjustment lock over end of tube and secure adjustment lock to tube by turning  lever on adjustment lock. NOTE: If adjustment lock does not fit over tube, rotate 180°. Mounting Bracket Washer (Threaded Plate) Hex Mounting...

  • Page 117: Replacing The Mkiv Rii™ 80 Amp Controller

    SECTION 12—ELECTRONICS 1. Turn the adjustment lock lever to release the joystick mounting tube from the  mounting bracket. 2. Remove the joystick from the wheelchair. 3. Remove the three hex mounting screws, spacers and locknuts that secure the  mounting bracket to the three mounting holes on the arm frame. NOTE: The mounting bracket is mounted to the inside of the arm frame. 4. Reposition the mounting bracket on the opposite arm frame. 5. Using the three hex mounting screws, spacers and locknuts, secure the mounting  bracket to the three mounting holes of the arm frame. 6. If necessary, perform the following to reposition the adjustment lock: A. Slide the adjustment lock from the mounting bracket. B. Rotate adjustment lock 180° and slide adjustment lock over the opposite end of the  mounting bracket. 7. Slide joystick mounting tube through the mounting bracket to the desired position  and secure adjustment lock to tube by turning lever on adjustment lock. Locknuts Arm Frame Hex Mounting Screws Spacers Adjustment Lock Lever Joystick Mounting Tube Joystick NOTE: MK  SPJ‐80 joystick ...
  • Page 118 SECTION 12—ELECTRONICS NOTE: Take note of position and orientation of wiring and tie‐wraps for installation. 1. Remove the seat. Refer to Removing/Installing or Tilting the Seat Assembly on  page 35. 2. Remove the batteries from the wheelchair. Refer to Installing/Removing the Batteries  on page 103. 3. Disconnect the right and left motor leads (Detail “A” of FIGURE 12.6). 4. Disconnect the controller charger cable from the charger cable (Detail “A” of  FIGURE 12.6). 5. Remove the two mounting screws and nuts securing the controller charger cable to the  charger cable bracket. 6. Remove the three tie‐wraps securing the controller charger cable to the wheelchair  frame. 7. Remove the four tie‐wraps securing the joystick cable to the wheelchair frame.  8. Remove the two mounting bolts securing the controller bracket to the wheelchair  frame. (Detail “B” of FIGURE 12.6). 9. Remove the controller and controller bracket from the wheelchair frame. 10. Remove the mounting bolt, washer, locknut and mounting screw that secure the  controller to the controller bracket.  11. Remove the existing controller from the controller bracket. 12. Using new tie‐wraps, reverse STEPS 1‐11 to install new controller. DETAIL “A” DETAIL “B”...

  • Page 119: Replacing The Nx-80, Nk5-Ex, Mk5 Or Mk6I Controller

    SECTION 12—ELECTRONICS Replacing the NX-80, NK5-EX, MK or MK6i Controller WARNING DO NOT attempt to perform this procedure with any power supplied to the wheel chair. The joystick and batteries MUST be disconnected prior to beginning to remove the MK -EX controller module.
  • Page 120 SECTION 12—ELECTRONICS LEFT Motor Lead DETAIL “A” DETAIL “B” Controller RIGHT Charger Motor Cable Lead Joystick Wheelchair Mounting Bolts Frame Cable Mounting Tie-wraps Screws Battery Cable Controller Wheelchair Frame FIGURE 12.7 Replacing the NX-80, NK5-EX, MK5 or MK6i Controller ® Pronto M91™and M94™...

  • Page 121: Section 13-Wire Routing

    SECTION 13—WIRE ROUTING SECTION 13—WIRE ROUTING 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 122: Mk5 Or Mk6I Wire Routing

    SECTION 13—WIRE ROUTING or MK6i Wire Routing NOTE: For this procedure, refer to FIGURE 13.2. RIGHT Motor Lead Joystick Cable NOTE: LEFT Motor  Lead Not Shown Controller Battery Tie-Wraps Cable Walking Beam Tie-Wraps Tie-Wraps Controller Charger Cable Wheelchair Frame Joystick Cable Wheelchair Frame Charger Cable NOTE: Batteries not shown FIGURE 13.2 MK5 or MK6i Wire Routing ®...

  • Page 123: Section 14-Transport Ready Package (Trro)

    NOTE: The information in this section is for wheelchairs ordered with the transport ready package  ONLY. WARNING Contact Invacare Corporation (800-333-6900) with any questions about using this wheelchair for seating in a motor vehicle. When feasible, wheelchair occupants should transfer into the vehicle seat and use the OEM (Original Equipment Manufacturer) vehicle-installed restraint system.

  • Page 124: About Transport Ready Packages

    WC/19 compliant. Refer to Installing/Removing the Batteries on page 103. About Transport Ready Packages TRRO includes four factory‐installed transport brackets and a wheelchair anchored  pelvic belt. TRRO has been crash‐tested in accordance with ANSI/RESNA WC Vol 1  Section 19 Frontal Impact Test requirements for wheelchairs with a 168 lb crash dummy,  which corresponds to a person with a weight of 114 to 209 lbs. TRBKTS includes four factory‐installed wheelchair transport brackets. TRBKTS has not  been crash‐tested in accordance with WC 19. Use these transport brackets only to secure  an unoccupied wheelchair during transport. As of this date, the Department of Transportation has not approved any tie‐down systems  for transportation of a user while in a wheelchair, in a moving vehicle of any type. 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. Invacare cannot and does not recommend any wheelchair  transportation systems. Compliance Information This wheelchair conforms with the requirements of the ANSI/RESNA WC/Vol. 1 ‐ Section  NOTE: ANSI = American National Standards Institute, RESNA= Rehabilitation Engineering  and Assistive Technology Society of North America. This wheelchair has been dynamically tested in a forward‐facing mode with the specified  crash test dummy, which corresponds to a person with a weight of 114‐209 pounds,  restrained by BOTH pelvic and upper‐torso belts in accordance with ANSI/RESNA WC  Vol 1 Section 19. BOTH pelvic and upper‐torso belts should be used to reduce the ...

  • Page 125: Securing The Wheelchair To The Vehicle

    SECTION 14—TRANSPORT READY PACKAGE (TRRO) Securing the Wheelchair to the Vehicle Positioning the Wheelchair in the Vehicle WARNING This wheelchair must be in a forward facing position during travel in a motor vehicle. The recommended clear zones for wheelchair seated occupants restrained by BOTH pelvic and upper-torso belt(s) and ONLY by a pelvic belt are shown in the diagrams and described below.

  • Page 126: Securement Points

    SECTION 14—TRANSPORT READY PACKAGE (TRRO) Securement Points Tie-Down Brackets Tie-Down Bracket (hidden from view) Tie-Down Bracket FIGURE 14.1 Securement Points Securing the Wheelchair This wheelchair is to be used only with Wheelchair Tie‐down and Occupant Restraint  Systems (WTORS) that have been installed in accordance with the manufacturerʹs  instructions and SAE J2249. NOTE: A copy of SAE J2249 Wheelchair Tie‐down and Occupant Restraint Systems (WTORS)  for use in Motor Vehicles can be obtained from: SAE International, 400 Commonwealth Drive,  Warrendale, PA 15096‐0001, (877) 606‐7232 or (724) 776‐4970. Attach WTORS to the tie‐down brackets in accordance with the manufacturerʹs  instructions and SAE J2249. ® Pronto M91™and M94™ Part No. 1125038...

  • Page 127: Securing The Occupant

    Securing the Occupant Wheelchair-Anchored Belts WARNING The pelvic belt that is provided by Invacare has been tested for use in a motor vehi- cle on this wheelchair ONLY. DO NOT replace the pelvic belt with a different style pelvic belt.

  • Page 128: Vehicle-Anchored Belts

    SECTION 14—TRANSPORT READY PACKAGE (TRRO) Vehicle-Anchored Belts NOTE: For this procedure, refer to FIGURE 14.3. This wheelchair has an overall rating of “A” with regard to accommodating the use and  fit of vehicle‐anchored belts. This rating is scored as follows: RATING DESCRIPTION Excellent Good Fair Poor The test for Lateral Stability Displacement for Point (P) is shown in FIGURE 14.3. The  average test result for point (P) is 0.44‐inches (11.2 mm). Point (P) Test Platform 45° NOTE: Rear view of the wheelchair and human surrogate  secured on test platform and tilted to 45°. FIGURE 14.3 Vehicle-Anchored Belts Seating System WARNING This wheelchair has been tested for seating in a motor vehicle with the factory installed seating system ONLY.

  • Page 129: Positioning Belts

    SECTION 14—TRANSPORT READY PACKAGE (TRRO) Positioning Belts WARNING The angle of the pelvic belt should be Side View within the preferred zone of 45 to 75 degrees to the horizontal OR within the optional zone of 30 to 45 degrees to the Preferred Zone horizontal.

  • Page 130: Notes

    NOTES NOTES ® Pronto M91™and M94™ Part No. 1125038...

  • Page 131: Limited Warranty

    LIMITED WARRANTY LIMITED WARRANTY For warranty information, please refer to the original ownerʹs manual which came with  this product, or contact Invacare for more information. Part No. 1125038 Pronto® M91™and M94™...
  • Page 132 ™ and ®. All Elyria, Ohio USA Mississauga Ontario trademarks are owned by or licensed to 44036-2125 L4Z 4G4 Canada Invacare Corporation unless otherwise 800-333-6900 800-668-5324 noted. Loctite is a registered trademark of Henkel Loctite Corporation.

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