|
Since these pages were converted from PDF, some of the content may appear garbled. To the best of our knowledge, the information contained herein is accurate. However, neither Binson's, or any of its subsidiaries assumes any liability whatsoever for the accuracy or completeness of the information contained herein. This manufacturer information is for educational purposes only.
This is the html version of this file..
Page 1
Owner's Operator and Maintenance Manual
Owner's Operator And Maintenance Manual
A-4
(Adjustable Seat Angle)
DEALER: THIS MANUAL MUST BE GIVEN
TO THE USER OF THE WHEELCHAIR.
USER: BEFORE USING THIS WHEELCHAIR,
READ THIS MANUAL AND SAVE FOR
FUTURE REFERENCE.
™
Page 2
A-4™
2
Part No. 1110545
WARNING
DO NOT OPERATE THIS EQUIPMENT WITHOUT FIRST
READING AND UNDERSTANDING THIS MANUAL. IF
YOU ARE UNABLE TO UNDERSTAND THE WARNINGS,
CAUTIONS AND INSTRUCTIONS, CONTACT A
QUALIFIED TECHNICIAN BEFORE ATTEMPTING TO USE
THIS EQUIPMENT - OTHERWISE INJURY OR DAMAGE MAY
RESULT.
SAVE THESE INSTRUCTIONS
WARNING
Page 3
Part No. 1110545
3
A-4™
CONTENTS
CONTENTS
TABLE OF CONTENTS
SPECIAL NOTES................................................................................ 5
LABEL LOCATIONS........................................................................... 6
SPECIFICATIONS .............................................................................. 7
SECTION 1 - GENERAL GUIDELINES .................................................. 8
STABILITY......................................................................................................................................................8
OPERATING INFORMATION.................................................................................................................9
TIRE PRESSURE ......................................................................................................................................... 10
WEIGHT TRAINING ............................................................................................................................... 10
WEIGHT LIMITATION ........................................................................................................................... 10
SAFETY/HANDLING OF WHEELCHAIRS........................................................................................ 11
SECTION 2 - SAFETY INSPECTION .................................................. 17
SAFETY INSPECTION CHECKLIST .................................................................................................... 17
TROUBLESHOOTING............................................................................................................................ 18
MAINTENANCE ....................................................................................................................................... 18
SECTION 3 - UPHOLSTERY.............................................................. 20
UNFOLDING/FOLDING THE BACK................................................................................................. 20
REMOVING/INSTALLING STANDARD BACK UPHOLSTERY.................................................. 21
ADJUSTABLE TENSION BACK UPHOLSTERY............................................................................... 22
SEAT UPHOLSTERY REPLACEMENT ................................................................................................ 23
SECTION 4 - FRAME ....................................................................... 24
BACK ANGLE ADJUSTMENT .............................................................................................................. 24
BACK HEIGHT ADJUSTMENT ............................................................................................................ 26
REAR SEAT-TO-FLOOR HEIGHT ADJUSTMENT.......................................................................... 27
REPLACING SEAT FRAME..................................................................................................................... 28
OPENING/CLOSING CAMBER CLAMPS ......................................................................................... 30
DETERMINING TOE IN/TOE OUT .................................................................................................... 31
ADJUSTING TOE IN/TOE OUT .......................................................................................................... 32
ADJUSTING THE AXLE TUBE ............................................................................................................. 34
REPOSITIONING CAMBER INSERTS (ADJUSTING REAR WHEEL CAMBER)..................... 36
ADJUSTING WHEELBASE LENGTH (ADJUSTING CENTER OF GRAVITY) ........................ 38
ADJUSTING WHEELBASE WIDTH .................................................................................................... 39
REPLACING AXLE TUBE ....................................................................................................................... 40
Page 4
A-4™
4
Part No. 1110545
CONTENTS
CONTENTS
SECTION 5 - WHEELS ...................................................................... 42
REMOVING/INSTALLING REAR WHEELS....................................................................................... 42
ADJUSTING QUICK-RELEASE AXLE................................................................................................ 43
INSTALLING QUAD-RELEASE AXLE ............................................................................................... 43
ADJUSTING THE QUAD-RELEASE HANDLE IN AND/OR OUT............................................. 44
REMOVING THE PLAY FROM THE REAR WHEELS..................................................................... 44
REPAIRING/REPLACING REAR WHEEL TIRE/TUBE .................................................................... 45
HANDRIM REPLACEMENT .................................................................................................................. 45
WHEEL LOCK ADJUSTMENT/REPLACEMENT ............................................................................. 46
REPLACING/ADJUSTING CASTERS .................................................................................................. 46
REPLACING FORKS ................................................................................................................................ 47
ADJUSTING CASTER HEIGHT ............................................................................................................ 48
ADJUSTING FRONT SEAT-TO-FLOOR HEIGHT.......................................................................... 49
SECTION 6 - FOOTREST .................................................................. 56
FOOTREST REPLACEMENT/ADJUSTMENT.................................................................................... 56
SECTION 7 - ANTI-TIPPERS ............................................................ 58
ANTI-TIPPER ADJUSTMENT/REPLACEMENT ................................................................................ 58
SECTION 8 - ARMS ......................................................................... 60
INSTALLING THE T-ARM SOCKETS................................................................................................. 60
INSTALLING/REMOVING T-ARMS .................................................................................................... 61
ADJUSTING THE T-ARMS..................................................................................................................... 62
ADJUSTING T-ARM TRANSFER ASSISTS AND/OR SIDE GUARDS ........................................ 65
REPLACING THE T-ARM LOCKING LEVER ................................................................................... 66
INSTALLING THE HALF ARM SOCKET ........................................................................................... 67
ADJUSTING HALF ARM HEIGHT ....................................................................................................... 67
LIMITED WARRANTY ..................................................................... 68
Page 5
Part No. 1110545
5
A-4™
WARNING/CAUTION notices as used in this manual apply to hazards or unsafe
practices which could result in personal injury or property damage.
NOTICE
THE INFORMATION CONTAINED IN THIS DOCUMENT IS SUBJECT TO
CHANGE WITHOUT NOTICE.
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.
WHEELCHAIR TIE-DOWN RESTRAINTS AND SEAT POSITIONING
STRAPS
Invacare recommends that wheelchair users NOT be transported in vehicles of any
kind while in wheelchairs. 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.
AS REGARDS TO RESTRAINTS - SEAT /CHEST POSITIONING STRAPS - IT
IS THE OBLIGATION OF THE DME DEALER, THERAPISTS AND OTHER
HEALTHCARE PROFESSIONALS TO DETERMINE IF A SEAT/CHEST
POSITIONING STRAP IS REQUIRED TO ENSURE THE SAFE OPERATION
OF THIS EQUIPMENT BY THE USER. SERIOUS INJURY CAN OCCUR IN
THE EVENT OF A FALL FROM A WHEELCHAIR.
SPECIAL NOTES
SPECIAL
NOTES
Page 6
A-4™
6
Part No. 1110545
LABEL LOCATIONS
LABEL
LOCATIONS
Refer to Owner's Manual
for proper anti-tipper
setting.
1085379
WARNING
WARNING
DO NOT OPERATE WITHOUT
THE ANTI-TIP TUBES
INSTALLED.
REV. 5/98
P/N 60106X144
WARNING
REV.10/98 1026960
Detent balls should extend beyond the diameter
of the axle bushing for a positive lock. Keep
detent balls clean.
Page 7
Part No. 1110545
7
A-4™
SPECIFICATIONS
SPECIFICATIONS
* NOTE: The seat-to-floor heights are based on pneumatic tires and pneumatic tires with flat free
inserts. If wheelchair is equipped with urethane tires, subtract 1/4-inch from the measurements listed
above. All heights are measured with properly inflated new tires. These heights can vary +1/4-inch due
to tire wear.
INVACARE A-4
Frame Type:
Tapered or "V"
Seat Width:
12 to 22-inches
Camber Width:
Camber (in degrees)
0
3
6
9
12
Add the inches listed in the
chart to the wheelchair width
Rear Wheel Type:
to obtain the overall width
Spoke
6-3/4
8
10
12-1/4 14-1/4
of the wheelchair at the
Composite
78-1/4 10-1/4 12-1/2 14-1/2
widest point.
Seat Depth:
14 to 22-inches
Seat-to-Floor (approx.)*
Front:
17 to 21-inches - in 1-inch increments
Rear:
Possible Rear Seat-to-Floor
Rear Wheel Size
14-1/2 to 19-inches
22-inch
15-1/2 to 20-inches
24-inch
16-1/2 to 20-inches
26-inch
Back Style:
Fold Down
Back Height:
8 to 20-inches - Adjustable
(8-11, 10-14, 12-16, 14-18 or 16-20-inch ranges)
Footrest:
5-inch Adjustable Height, Adjustable Angle or Tubular
Side Wheel Clearance:
1/2 to 2-1/2-inches (1-inch Standard)
Rear Axle:
Quick-Release, Quad-Release
Rear Wheel Camber
Single:
Custom - 0°, 3°, 6°, 9° and 12°
Dual:
Custom - 0° and 3°, 0° and 6°, 0° and 9°, 3° and 6°, 3° and 9°,
3° and 12°, 6° and 9°, 6° and 12°, 9° and 12°
Rear Wheels:
22 or 24-inch Composite, Spoke or Spinergy
(24-inch Spoke Standard)
26-inch Spoke or Spinergy, 559mm Spoke or 700C Spoke
Handrims:
Aluminum Welded Tab (Standard), Plastic Coated or Projections
Wheel Locks:
High Mount (Standard), Low Mount or Hideaway Undermount
Caster Size:
3-inch Rollerblade, 4 or 5-inch Soft Roll, 5-inch Urethane,
6-inch ("V" Front Only) Urethane or 6-inch Semi-Pneumatic
Seat Cushion:
2 or 3-inch
Back Upholstery:
U240 Black (standard) or Adjustable Tension
Arms (Optional):
Half (Swingaway Padded) or "T"
Weight:
22 pounds
Shipping Weight (approx):
34 pounds - 15 x 15 seat frame with complete package
Page 8
A-4™
8
Part No. 1110545
SECTION 1
GENERAL GUIDELINES
GENERAL
GUIDELINES
Section 1 - General Guidelines includes the following:
Stability
Operating Information
Weight Training
Weight Limitation
Safety/Handling of Wheelchairs
STABILITY
STABILITY WARNINGS
The position of the footrest, seat angle, back angle, seating system/
upholstery, caster size and position, rear wheel size and position, use of
anti-tippers, as well as the user condition directly relate to the stability of
the wheelchair. Any change to one (1) or any combination of the ten (10)
may cause the wheelchair to decrease in stability. EXTREME care MUST
be taken when changing the stability of the wheelchair.
To maintain maximum stability, the rear wheels should be left in the factory
setting. Moving the rear wheels forward causes the wheelchair to decrease
in stability.
ALWAYS ensure stability BEFORE moving the rear wheels forward. TEST
wheelchair BEFORE it is occupied by the end user to ensure safety.
Footrest
Position
Seat
Angle
Back
Angle
Seating
System
Caster
Size
Caster
Position
Rear
Wheel
Size
Rear
Wheel
Position
Anti-Tippers
User
Condition
NOTE: When changes to the left hand column occur, follow across the chart and refer to the
procedure that is checked (ü) to maintain the proper stability, safety and handling of the
wheelchair.
NOTE: Additional adjustments may be needed according to the wheelchair type. Refer to the
wheelchair owner's manual for these procedures.
Footrest Position
•
ü
ü
N/A N/A N/A N/A N/A N/A ü
Seat Angle
ü
•
ü
ü N/A N/A N/A N/A N/A ü
Back Angle
N/A
ü
•
ü N/A N/A N/A N/A N/A ü
Seating System/Upholstery
ü
ü
ü
•N/A N/A N/A N/A N/A ü
Caster Size
N/A N/A N/A
•
ü
ü
ü
ü
ü N/A
Caster Position
N/A N/A N/A N/A•
ü
ü
ü
ü N/A
Rear Wheel Size
N/A N/A N/A
ü
ü
•
ü
ü
ü N/A
Rear Wheel Position
N/A N/A N/A
ü
ü
ü
•
ü
ü N/A
Anti-Tippers
N/A N/A N/A N/A ü
ü
ü
ü
•
ü
User Condition
ü
ü
ü
ü
ü
ü
ü
ü
ü
•
Page 9
Part No. 1110545
9
A-4™
SECTION 1
GENERAL GUIDELINES
GENERAL
GUIDELINES
OPERATING INFORMATION
WARNING
To determine and establish your particular safety limits, practice bending,
reaching and transferring activities in several combinations in the presence
of a qualified health professional BEFORE attempting active use of the
wheelchair.
All service and adjustments should be performed while the wheelchair is
unoccupied.
DO NOT attempt to reach objects if you have to move forward in the seat.
DO NOT attempt to reach objects if you have to pick them up from the
floor by reaching down between your knees.
DO NOT lean over the top of the back upholstery. This will change your
center of gravity and may cause you to tip over.
DO NOT shift your weight or sitting position toward the direction you are
reaching as the wheelchair may tip over.
DO NOT tip the wheelchair without assistance.
DO NOT use an escalator to move a wheelchair between floors. Serious
bodily injury may occur.
NEVER position the camber inserts in the axle tube with more than 3-
inches (3-inches is 12 indexing marks showing) of the camber insert outside
of the axle tube. The camber inserts will not be securely tightened in the
axle tube resulting in possible injury to the user or damage to the
wheelchair.
WHEEL LOCKS ARE NOT BRAKES. DO NOT attempt to stop a moving
wheelchair with the wheel locks.
Before attempting to transfer in or out of the wheelchair, every precaution
should be taken to reduce the gap distance. Align both casters parallel with
the object you are transferring onto. When transferring to and from the
wheelchair, ALWAYS ENGAGE BOTH WHEEL LOCKS.
DO NOT operate on roads, streets or highways.
DO NOT climb, go up or down ramps or traverse slopes greater than 9°.
DO NOT attempt to move up or down an incline with a water, ice or oil
film.
DO NOT attempt to ride over curbs or obstacles. Doing so may cause
your wheelchair to turn over and cause bodily harm or damage to the
wheelchair.
DO NOT use parts, accessories, or adapters other than those authorized
by Invacare.
Page 10
A-4™
10
Part No. 1110545
WARNING (CONTINUED)
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.
DO NOT stand on the frame of the wheelchair.
Anti-tippers MUST BE attached at all times. Inasmuch as the ANTI-
TIPPERS are an option on this wheelchair (You may order with or without
the anti-tippers), Invacare strongly recommends ordering the anti-tippers
as an additional safeguard for the wheelchair user.
DO NOT use the footplate as a platform when getting in or out of the
wheelchair.
ALWAYS wear your seat positioning strap. Inasmuch as the SEAT
POSITIONING STRAP is an option on this wheelchair (You may order
with or without the seat positioning strap), Invacare strongly recommends
ordering the seat positioning strap as an additional safeguard for the
wheelchair user.
ALWAYS use the handrims for self-propulsion. Inasmuch as the
HANDRIMS are an option on this wheelchair (you may order with or
without the handrims), Invacare strongly recommends ordering the
handrims as an additional safeguard for the wheelchair user.
TIRE PRESSURE
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.
Replacement of a pneumatic tire or tube MUST be performed by a
qualified technician.
WEIGHT TRAINING
WARNING
Invacare DOES NOT recommend the use of its wheelchairs as a weight
training apparatus. Invacare wheelchairs have NOT been designed or
tested as a seat for any kind of weight training. If occupant uses said
wheelchair as a weight training apparatus, Invacare shall NOT be liable for
bodily injury and the warranty will be voided immediately.
WEIGHT LIMITATION
WARNING
The Invacare A-4 wheelchair has a weight limitation of 300 lbs. (136 kg.).
SECTION 1
GENERAL GUIDELINES
GENERAL
GUIDELINES
Page 11
Part No. 1110545
11
A-4™
SECTION 1
GENERAL GUIDELINES
GENERAL
GUIDELINES
SAFETY/HANDLING OF WHEELCHAIRS
“Safety and Handling” of the wheelchair requires the close attention of the wheelchair
user as well as the assistant. This manual points out the most common procedures and
techniques involved in the safe operation and maintenance of the wheelchair. It is
important to practice and master these safe techniques until you are comfortable in
maneuvering around the frequently encountered architectural barriers.
Use this information only as a “basic” guide. The techniques that are discussed on the
following pages have been used successfully by many users.
Individual wheelchair users often develop skills to deal with daily living activities that
may differ from those described in this manual. Invacare recognizes and encourages each
individual to try what works best for him/her in overcoming architectural barriers that
they may encounter, however ALL WARNINGS and CAUTIONS given in this manual
MUST be followed. Techniques in this manual are a starting point for the new
wheelchair user and assistant with “safety” as the most important consideration for all.
STABILITY AND BALANCE
WARNING
ALWAYS wear your seat positioning strap. Inasmuch as the SEAT
POSITIONING STRAP is an option on this wheelchair (You may order
with or without the seat positioning strap), Invacare strongly recommends
ordering the seat positioning strap as an additional safeguard for the
wheelchair user.
Anti-tippers MUST BE attached at all times. Inasmuch as the ANTI-
TIPPERS are an option on this wheelchair (You may order with or without
the anti-tippers), Invacare strongly recommends ordering the anti-tippers
as an additional safeguard for the wheelchair user.
To assure safe stability and operation of the wheelchair, proper balance and positioning
must be maintained by the user. Your wheelchair has been designed to remain upright
and stable during normal daily activities provided you do not move beyond the center of
gravity. Depending on your individual circumstances, proper positioning may require the
use of a seat positioning strap.
DO NOT lean forward out of the wheelchair any further than the length of the
armrests. Make sure the casters are pointing in the forward position whenever you lean
forward. This can be achieved by advancing the wheelchair and then reversing it in a
straight line.
COPING WITH EVERYDAY OBSTACLES
Coping with the problems of everyday obstacles can be improved somewhat by learning
how to manage your wheelchair. Keep in mind your center of gravity to maintain
stability and balance.
Page 12
A-4™
12
Part No. 1110545
SECTION 1
GENERAL GUIDELINES
GENERAL
GUIDELINES
A NOTE TO WHEELCHAIR ASSISTANTS
When assistance to the wheelchair user is required, remember to use good body
mechanics. Keep your back straight and bend your knees whenever tilting the
wheelchair or traversing curbs, or other impediments.
WARNING
DO NOT attempt to lift a wheelchair by lifting on any removable
(detachable) parts. Lifting by means of any removable (detachable) parts of
a wheelchair may result in injury to the user or damage to the wheelchair.
Also, be aware of any removable (detachable) parts, such as armrests of legrests. These
must NEVER be used to move the wheelchair or as lifting supports, as they may be
inadvertently released, resulting in possible injury to the user and/or assistant(s).
When learning a new assistance technique, have an experienced assistant help you
before attempting it alone.
PERCENTAGE OF WEIGHT DISTRIBUTION
WARNING
DO NOT attempt to reach objects if you have to move forward in the seat
or pick them up from the floor by reaching down between your knees.
Many activities require the wheelchair user to reach, bend and transfer in
and out of the wheelchair. These movements will cause a change to the
normal balance, the center of gravity, and the weight distribution of the
wheelchair. To determine and establish your particular safety limits,
practice bending, reaching and transferring activities in several
combinations in the presence of a qualified healthcare professional
BEFORE attempting active use of the wheelchair.
Proper positioning is essential for your safety. When reaching, leaning, or
bending forward, it is important to use the front casters as a tool to
maintain stability and balance.
The position of the footrest, seat angle, back angle, seating system/
upholstery, caster size and position, rear wheel size and position, use of
anti-tippers, as well as the user condition directly relate to the stability of
the wheelchair. Any change to one (1) or any combination of the ten (10)
may cause the wheelchair to decrease in stability. EXTREME care MUST
be taken when changing the stability of the wheelchair.
LENGTHENING THE WHEELBASEwill increase the stability and maintain
standard maneuverability of the wheelchair.
SHORTENING THE WHEELBASEwill increase the maneuverability, distribute
additional weight onto the rear wheels andmake the wheelchair less stable.
Page 13
Part No. 1110545
13
A-4™
SECTION 1
GENERAL GUIDELINES
GENERAL
GUIDELINES
CENTER OF
GRAVITY
UNOCCUPIED
OCCUPIED
Rear of Wheelchair
LENGTHENING
THE
WHEELBASE
SHORTENING
THE
WHEELBASE
Reaching, Leaning and Bending - Forward.
Position the front casters so that they are
extended as far forward as possible and
engage wheel locks.
WARNING
DO NOT attempt to reach objects
if you have to move forward in the
seat or pick them up from the floor
by reaching down between your
knees.
Reaching, Leaning - Backwards.
WARNING
DO NOT lean over the top of the
back upholstery. This will change your
center of gravity and may cause you to
tip over.
Position wheelchair as close as possible to the
desired object. Point front casters forward to
create the longest possible wheelbase. Reach
back only as far as your arm will extend without changing your sitting position.
Page 14
A-4™
14
Part No. 1110545
SECTION 1
GENERAL GUIDELINES
GENERAL
GUIDELINES
TIPPING
WARNING
DO NOT tipthe wheelchair without assistance.
When tipping the wheelchair, an assistant should grasp the back of the wheelchair on a non-
removable (non-detachable) part. Inform the wheelchair occupant before tipping the
wheelchair and remind him/her to lean back. Be sure the occupant’s feet and hands are clear of
all wheels and/or pinch points.
Tipping - Curbs.
After mastering the techniques of tipping the
wheelchair, use the following method to
tackle curbs, short stairs, etc.
Turn the anti-tippers so the wheels are facing
UP. Unless the first assistant has exceptional
upper body strength, it is recommended that
two (2) assistants perform this operation. The
second assistant should be positioned at the
front of the wheelchair lifting upward on a
non-removable (non-detachable) part of the wheelchair frame when lifting the wheelchair and
stabilizing the wheelchair when the wheelchair is being lowered to the ground.
The first assistant should stand on the sidewalk and turn the wheelchair so that the rear wheels
are against the curb. The wheelchair should be tipped back to the balance point and, in one
continuous upward movement, the rear wheels should be pulled up and over the curb. DO
NOT return the front casters to the ground until the wheelchair has been pulled backward far
enough for the front casters to clear the edge of the curb.
WARNING
When lowering the front casters of the wheelchair, DO NOTlet the wheelchair
drop the last few inches to the ground. This could result in injury to the occupant
and/or damage to the wheelchair.
Roll the wheelchair backward andSLOWLYlower the wheelchair in one continuous
movement. DO NOT let the wheelchair drop the last few inches to the ground. This could
result in injury to the occupant. Turn the anti-tippers so the wheels are facing DOWN.
Page 15
Part No. 1110545
15
A-4™
SECTION 1
GENERAL GUIDELINES
GENERAL
GUIDELINES
STAIRWAYS
WARNING
ALWAYS wear your seat positioning strap. Inasmuch as the SEAT
POSITIONING STRAP is an option on this wheelchair (You may order
with or without the seat positioning strap), Invacare strongly recommends
ordering the seat positioning strap as an additional safeguard for the
wheelchair user.
DO NOT attempt to lift a wheelchair by lifting on any removable
(detachable) parts. Lifting by means of any removable (detachable) parts of
a wheelchair may result in injury to the user or damage to the wheelchair.
EXTREME CAUTION is advised when it is necessary to move an occupied
wheelchair up or down the stairs. Invacare recommends that, if possible, the
user be removed from the wheelchair prior to moving. Invacare recommends
using two (2) assistants and making thorough preparations. Make sure to use
ONLY secure, non-detachable parts for hand-held supports.
Follow this procedure for moving the wheelchair between floors when an
elevator is NOT available:
1. Turn the anti-tippers so the wheels are facing UP.
2. After the wheelchair has been tipped back to the balance point, one assistant (in the
rear) backs the wheelchair up against the first step, while securely grasping a non-
removable (non-detachable) part of the wheelchair for leverage.
3. The second assistant, with a firm hold on a non-detachable part of the framework,
lifts the wheelchair up and over the stair and steadies the wheelchair as the first
assistant places one (1) foot on the next stair and repeats STEP 1.
4. The wheelchair should not be lowered until the last stair has been negotiated and
the wheelchair has been rolled away from the stairway.
5. Turn the anti-tippers so the wheels are facing DOWN.
ESCALATORS? SORRY!
DO NOT use an escalator to move a wheelchair between floors. Serious
bodily injury may occur.
Page 16
A-4™
16
Part No. 1110545
SECTION 1
GENERAL GUIDELINES
GENERAL
GUIDELINES
TRANSFERRING TO AND FROM OTHER SEATS
WARNING
BEFORE attempting to transfer in or out of the wheelchair, every
precaution should be taken to reduce the gap distance. Align both casters
parallel with the object you are transferring onto. Also be certain the wheel
locks are engaged to help prevent the wheels from moving.
CAUTION
When transferring, position yourself as far back as possible in the seat. This
will prevent damaged upholstery and the possibility of the wheelchair
tipping forward.
NOTE: This activity may be performed independently provided you have adequate mobility and
upper body strength.
Position the wheelchair as close as possible along side the seat to which you are transferring,
with the front casters pointing parallel to it. Remove, lower or rotate the armrest so it is out
of the way. Engage wheel locks. Shift body weight into seat with transfer.
During independent transfer, little or no seat platform will be beneath you. Use a
transfer board if at all possible.
Page 17
Part No. 1110545
17
A-4™
SECTION 2
SAFETY INSPECTION
SAFETY
I
NSPECTION
SAFETY INSPECTION CHECKLIST
NOTE: Every six (6) months or as necessary, take your wheelchair to a qualified technician for a
thorough inspection and servicing. Regular cleaning will reveal loose or worn parts and enhance the
smooth operation of your wheelchair. To operate properly and safely, your wheelchair must be cared for
just like any other vehicle. Routine maintenance will extend the life and efficiency of your wheelchair.
Section 2 - Safety Inspection includes the following:
Safety Inspection Checklist
Troubleshooting
Maintenance
Initial adjustments should be made to suit your personal body structure needs and
preference. Thereafter follow these maintenance procedures:
ITEM
Initially Weekly Monthly Periodically
GENERAL
• Wheelchair rolls straight (no excessive drag or pull to one side).
X
X
• Inspect for loose/missing/broken hardware in all locations.
X
X
WHEEL LOCKS
• Do not interfere with tires when rolling.
X
X
• Pivot points free of wear and looseness.
X
X
• Wheel locks easy to engage.
X
X
• Wheel locks prevent wheelchair from moving when engaged.
X
X
SEAT AND BACK
• Inspect upholstery for rips or sagging.
X
X
• Inspect for loose or broken hardware.
X
X
• Inspect fastening flaps to ensure they securely latch.
X
X
REAR WHEELS
• Quick/Quad-release axles lock properly.
Lubricate if necessary (with Teflon® lubricant ONLY).
X
X
• No excessive side movement or binding when lifted and spun.
X
X
• Inspect for cracked, worn, bent or broken spokes.
X
X
• Ensure all spokes are uniformly tight.
X
X
• Inspect wheels for cracks and wear (hubs and rims).
X
X
HANDRIMS
• Inspect for signs of rough edges or peeling.
X
X
FRONT CASTERS/FORKS
• Inspect wheel/fork assembly for proper tension by
spinning caster; caster should come to a gradual stop.
X
X
• Adjust bearing system if wheel wobbles noticeably or binds to
a stop. Ensure wheel bearings are clean and free of moisture.
X
X
• Check headtube locknuts for tightness.
X
X
• Inspect casters for cracks and wear (hubs and rims).
X
X
• Inspect for cracked, worn or broken spokes.
X
X
CAUTION: As with any vehicle, the wheels and
tires should be checked periodically for cracks and
wear, and should be replaced if damaged.
TIRES
• Inspect for flat spots, cracks and wear.
X
X
• If pneumatic tires check for proper inflation.
X
X
CAUTION: As with any vehicle, the wheels and
tires should be checked periodically for cracks and
wear, and should be replaced if damaged.
CAMBER/AXLE TUBE
• Axle tube is securely tightened.
X
X
• Camber inserts are not extended more than 3-inches.
X
X
CLEANING
• Clean upholstery and armrests.
X
X
• Clean optional quick release levers.
X
X
Page 18
A-4™
18
Part No. 1110545
SECTION 2
SAFETY INSPECTION
SAFETY
INSPECTION
TROUBLESHOOTING
MAINTENANCE
MAINTENANCE SAFETY PRECAUTIONS
MAINTENANCE SAFETY PRECAUTIONS
MAINTENANCE SAFETY PRECAUTIONS
MAINTENANCE SAFETY PRECAUTIONS
MAINTENANCE SAFETY PRECAUTIONS
WARNING
After ANY adjustments, repair or service and BEFORE use, make sure all
attachment hardware is tightened securely - otherwise, injury or damage may
result.
CAUTION
DO NOT overtighten hardware attaching to the frame. This could cause
damage to the frame tubing.
SUGGESTED MAINTENANCE PROCEDURES
1. Before using your A-4 wheelchair, make sure all nuts and bolts are tight. Check all parts
for damage or wear and replace. Check all parts for proper adjustment.
2. Keep quick-release axles free of dirt and lint to ensure positive locking and proper
operation. Refer to ADJUSTING THE QUICK-RELEASE AXLE in SECTION 6 of this
manual.
WARNING
DO NOT use WD-40
®
, 3-in-1 oil
®
, or other penetrating lubricants on quick-
release axles. Otherwise, binding and/or damage to the wheelchair may occur.
3. Clean/oil quick-release axles once (1) a week with a Teflon lubricant.
4. Keep optional quick release levers on axle tubes free of dirt and lint to ensure
positive locking and proper operation.
Chair
Chair
Sluggish
Squeaks
Veers
3
Turn or
Caster
and Looseness
Right/Left Wheels Performance Flutter
Rattles in Chair
SOLUTIONS
X
X
X
X
If pneumatic, check tires for
correct and equal pressure.
X
X
X
X
Check for loose stem nuts and
bolts.
X
X
Check spokes/nipples.
X
X
X
Check washers/spacers above and
below bearings in headtube.
X
X
X
X
Check that rear wheels are equally
spaced away from seat frame.
Page 19
Part No. 1110545
19
A-4™
SECTION 2
SAFETY INSPECTION
GENERAL
GUIDELINES
WARNING
DO NOT use the 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.
5. If tires are pneumatic, recommended tire pressure is listed on the sidewall of the
tire.
CAUTION
As with any vehicle, the rear wheels, casters and tires should be checked
periodically for cracks and wear, and should be replaced if damaged.
6. The rear wheels, casters and tires should be checked periodically for cracks and
wear, and should be replaced by a qualified technician if damaged.
7. Regularly check for loose, worn or cracked spokes in the rear wheels and casters. If
loose, have them adjusted by a qualified technician. If damaged, replace wheel or
caster.
8. Periodically check handrims to ensure they are secured to the rear wheels. If loose,
have them tightened by a qualified technician.
9. Periodically adjust wheel locks as tires wear. Refer to WHEEL LOCK ADJUST-
MENT in SECTION 8 of this manual.
10. Periodically check caster and rear wheel bearings to make sure they are clean and
free from moisture. Use a Teflon lubricant if necessary.
11. Check upholstery for sagging, rips and tears.
Page 20
A-4™
20
Part No. 1110545
SECTION 3
UPHOLSTERY
UPHOLSTERY
UNFOLDING/FOLDING THE BACK (FIGURE 1)
WARNING
Back MUST be locked securely in place before using the wheelchair.
1. To unfold the back, lift up on the back canes and pull back towards the rear of the
wheelchair until it locks into place.
2. To fold the back, pull up on the cord and push the back canes forward towards the
front of the wheelchair.
FIGURE 1 - UNFOLDING/FOLDING THE BACK
FRONT OF
WHEELCHAIR
REAR OF
WHEELCHAIR
Back Cane
NOTE: Back upholstery removed for clarity.
Section 3 - Upholstery includes the following:
Unfolding/Folding the Back
Removing/Installing Standard Back Upholstery
Adjustable Tension Back Upholstery
Seat Upholstery Replacement
WARNING
After ANY adjustments, repair or service and BEFORE use, make sure all
attachment hardware is tightened securely - otherwise, injury or damage may
result.
Back Release Cord
(Not Shown)
Page 21
Part No. 1110545
21
A-4™
SECTION 3
UPHOLSTERY
UPHOLSTERY
Back Upholstery
Fastening
Flap
Fastening
Flap
Back
Canes
FIGURE 2 - REMOVING/INSTALLING STANDARD BACK UPHOLSTERY
Fold
Loops
Fastening
Strips
REAR OF WHEELCHAIR
FRONT OF WHEELCHAIR
REMOVING/INSTALLING STANDARD BACK
UPHOLSTERY (FIGURE 2)
WARNING
The position of the footrest, seat angle, back angle, seating system/
upholstery, caster size and position, rear wheel size and position, use of
anti-tippers, as well as the user condition directly relate to the stability of
the wheelchair. Any change to one (1) or any combination of the ten (10)
may cause the wheelchair to decrease in stability. EXTREME care MUST
be taken when changing the stability of the wheelchair. Refer to the chart in
STABILITY in SECTION 1 of this manual.
REMOVING STANDARD BACK UPHOLSTERY
1. Unfasten the two (2) fastening flaps that secure the bottom of the existing back
upholstery to the back canes.
2. Unfold the top of the back upholstery.
3. Lift up on the existing back upholstery and remove from the wheelchair.
INSTALLING STANDARD BACK UPHOLSTERY
1. Install the new back upholstery onto the back canes.
2. Wrap the end of a fastening flap around the back cane.
3. Insert the end of the fastening flap through the loop.
4. Wrap the fastening flap around the back cane again and press firmly to secure.
5. Fold the top of the back upholstery down over the back canes towards the front of
the wheelchair.
6. Press firmly to secure the fastening strips.
Page 22
A-4™
22
Part No. 1110545
SECTION 3
UPHOLSTERY
UPHOLSTERY
ADJUSTABLE TENSION BACK UPHOLSTERY (FIGURE 3)
WARNING
The position of the footrest, seat angle, back angle, seating system/
upholstery, caster size and position, rear wheel size and position, use of
anti-tippers, as well as the user condition directly relate to the stability of
the wheelchair. Any change to one (1) or any combination of the ten (10)
may cause the wheelchair to decrease in stability. EXTREME care MUST be
taken when changing the stability of the wheelchair. Refer to the chart in
STABILITY in SECTION 1 of this manual.
THE ADJUSTABLE TENSION STRAPS
The adjuster straps can be adjusted at
various levels of tension to accommodate
individual end-users. The bottom two (2)
straps can be adjusted tightly to support and/
or assist the extensor muscles.
THE BACK UPHOLSTERY
COVER
The back upholstery cover is designed
for three (3) reasons:
1. The first is as a modesty cover.
2. The second is to keep the cushion from
sliding out of the back of the wheelchair.
3. The third is a sacral support depending
upon how far or tight the seat portion of
the back upholstery cover is pulled under
the seat cushion.
REMOVING/INSTALLING ADJUSTABLE TENSION BACK
UPHOLSTERY
NOTE: To remove adjustable tension back upholstery, reverse STEPS 2-4.
1. Remove the existing back upholstery from the wheelchair. Refer to REMOVING/
INSTALLING STANDARD BACK UPHOLSTERY in this section of the manual.
2. Stand behind the wheelchair and perform the following:
A. Slide anchor loop section of adjustable tension back upholstery over the LEFT back cane
with the grommet hole facing the rear of the wheelchair.
B. Slide adjuster strap section of adjustable tension back upholstery over the RIGHT back cane
with the grommet hole facing the rear of the wheelchair.
3. Adjust the adjuster straps to the desired tension.
Fastening Strap
Back Upholstery
Cover
Fastening Strap
Back Cane
Mounting
Hole
Back Upholstery Adjuster Straps
Back Upholstery
Anchor Loops
FIGURE 3 - ADJUSTABLE TENSION
BACK UPHOLSTERY
Mounting Screw
Seat Portion of Back
Upholstery Cover
Page 23
Part No. 1110545
23
A-4™
SECTION 3
UPHOLSTERY
UPHOLSTERY
Phillips
Screws
NOTE: Wheelchair frame not shown for clarity.
Seat Upholstery
Seat Frame
FIGURE 4 - SEAT UPHOLSTERY REPLACEMENT
SEAT UPHOLSTERY REPLACEMENT (FIGURE 4)
1. Remove the seat cushion from the wheelchair.
2. Remove the phillips screws that secure the existing seat upholstery to the seat
frame.
WHEELCHAIR DEPTH
NUMBER OF SCREWS
14 to 15-inches
10
16 to 17-inches
12
18-inches
14
19 to 20-inches
16
22-inches
18
3. Remove the existing seat upholstery.
4. Install the NEW seat upholstery by reversing the above steps.
5. Reinstall the seat cushion onto the wheelchair.
4. Secure adjustable tension back upholstery to the back canes with the mounting screws. Torque
to 20-25 in./lbs.
NOTE: Clean the upholstery with warm water and mild detergent to remove superficial soil.
WARNING
After the adjustable tension back upholstery has been positioned to the end-
user's individual needs, the fastening straps MUST be securely fastened
BEFORE applying the back upholstery cover. The adjustable tension back
should be checked whenever entering the wheelchair to ensure that the
fastening/adjuster straps are securely fastened.
Page 24
A-4™
24
Part No. 1110545
SECTION 4
FRAME
FRAME
Section 4 - Frame includes the following:
Back Angle Adjustment
Back Height Adjustment
Rear Seat-to-Floor Height Adjustment
Replacing Seat Frame
Opening/Closing Camber Clamps
Determining Toe in/Toe out
Adjusting Toe in/Toe out
Adjusting the Axle Tube
Repositioning Camber Inserts (Adjusting Rear Wheel Camber)
Adjusting Wheelbase Length (Adjusting Center of Gravity)
Adjusting Wheelbase Width
Replacing Axle Tube
WARNING
After ANY adjustments, repair or service and BEFORE use, make sure all
attachment hardware is tightened securely - otherwise, injury or damage
may result.
BACK ANGLE ADJUSTMENT (FIGURE 1)
NOTE: Perform this procedure on both sides of the wheelchair at the same time.
1. Loosen, but DO NOT remove the locknuts and hex screws that secure the back
angle bracket to the seat rail and the back cane.
2. Loosen the TOP locknut and slide the TOP hex screw away from the back angle
bracket to adjust the cam.
3. Adjust back canes to back angle required.
4. Adjust cam to achieve desired position.
NOTE: An indexing notch has been put on the cam to help determine cam position for desired
back angle adjustment.
5. Secure cam in desired position. Torque all hex screws and locknuts to 960-1020
inch pounds (80-85 foot pounds).
NOTE: As shown in FIGURE 1, the adjustment cam can be rotated to several different positions
thus changing the overall back angle relative to the seat rail.
Page 25
Part No. 1110545
25
A-4™
SECTION 4
FRAME
FRAME
75° BACK ANGLE TO SEAT RAIL
80° BACK ANGLE TO SEAT RAIL
85° BACK ANGLE TO SEAT RAIL
95° BACK ANGLE TO SEAT RAIL
90° BACK ANGLE TO SEAT RAIL
Back Cane
Indexing
Notch
Cam
Back Angle
Bracket
Seat Rail
TOP Hex
Screw and
Locknut
Back
Cane
Indexing Notch
Cam
Back Angle Bracket
Seat Rail
TOP Hex
Screw and
Locknut
Back Cane
Indexing
Notch
Cam
Back Angle Bracket
Seat Rail
TOP Hex Screw
and Locknut
Back Cane
Indexing
Notch
Cam
Back Angle
Bracket
Seat Rail
TOP Hex
Screw and
Locknut
Back Cane
Indexing
Notch
Cam
Back Angle Bracket
Seat Rail
TOP Hex Screw
and Locknut
FIGURE 1 - BACK ANGLE ADJUSTMENT
Page 26
A-4™
26
Part No. 1110545
BACK HEIGHT ADJUSTMENT (FIGURE 2)
NOTE: Observe the tautness of the back upholstery/adjustable tension back upholstery adjuster
straps for proper reinstallation.
1. Remove the back upholstery by performing one (1) of the following:
A.STANDARD BACK UPHOLSTERY -Refer to REMOVING/INSTALLING
STANDARD BACK UPHOLSTERY in SECTION 3 of the manual.
B.ADJUSTABLE TENSION BACK UPHOLSTERY -Refer to ADJUSTABLE
TENSION BACK UPHOLSTERY in SECTION 3 of the manual.
WARNING
Push pin of the back cane insert bar MUST be protruding through hole in
each back cane.
Ensure that both back cane insert bars are at same height BEFORE
reassembling the wheelchair.
2. Press the push pin on the back cane insert bar IN and adjust the back height to one
(1) of five (5) heights depending on original back height:
BACK HEIGHT (IN INCHES)
* HOLE #
8-11
10-14
12-16
14-18
16-20
1
8
10
12
14
16
2
10
11
13
15
17
3
11
12
14
16
18
4
N/A
13
15
17
19
5
N/A
14
16
18
20
*Holes numbered from bottom to top for reference only. (There are no numbers on
the back canes.)
3. Reinstall back upholstery by performing one (1) of the following:
A.STANDARD BACK UPHOLSTERY -Refer to REMOVING/INSTALLING
STANDARD BACK UPHOLSTERY in SECTION 3 of the manual.
B.ADJUSTABLE TENSION BACK UPHOLSTERY -Refer to ADJUSTABLE
TENSION BACK UPHOLSTERY in SECTION 3 of this manual.
FIGURE 2 - BACK HEIGHT ADJUSTMENT
Back Cane
Back Cane Insert Bar
Hole Number
5
4
3
2
1
SECTION 4
FRAME
FRAME
Page 27
Part No. 1110545
27
A-4™
REAR SEAT-TO-FLOOR HEIGHT ADJUSTMENT (FIGURE 3)
WARNING
After making adjustments, always make sure that ALL parts are properly
tightened BEFORE using the wheelchair.
NOTE: All A-4 wheelchairs are manufactured with the REAR seat-to-floor height 1-inch lower than
the FRONT seat-to-floor height. REAR seat-to-floor height adjustment slots are in 1/2-inch increments.
The number of available adjustment slots depends on the configuration of the wheelchair. Refer to
specifications in this manual for complete information.
1. Remove the two (2) screws, nylon washers and locknuts that secure the seat frame
to the wheelchair frame.
2. Reposition the seat frame so the mounting hole is aligned with the desired mounting
position in the wheelchair frame.
3. Resecure the seat frame to the wheelchair frame with the two (2) screws, nylon
washers and locknuts.
Screw
Locknut
Seat Frame
Wheelchair
Frame
DETAIL "A" - MOUNTING
POSITIONS
Mounting
Positions
FIGURE 3 - REAR SEAT-TO-FLOOR HEIGHT ADJUSTMENT
SECTION 4
FRAME
FRAME
Nylon
Washer
Page 28
A-4™
28
Part No. 1110545
REPLACING SEAT FRAME (FIGURE 4)
1. Remove the rear wheels from the wheelchair. Refer to REMOVING/INSTALLING
REAR WHEELS in SECTION 5 of the manual.
2. Remove the seat upholstery from the wheelchair. Refer to SEAT UPHOLSTERY
REPLACEMENT in SECTION 3 of the manual.
3. Remove the wheel locks from the wheelchair. Refer to WHEEL LOCK
ADJUSTMENT/REPLACEMENT in SECTION 5 of this manual.
4. Note the installation position of the rear seat frame for proper reinstallation.
5. Remove the locknut, nylon washer and screw securing each side of the REAR seat
frame to the wheelchair frame as shown in DETAIL "A" of FIGURE 4.
6. Remove two (2) allen screws and washers that secure FRONT seat frame to the
wheelchair front frame as shown in DETAIL "B" of FIGURE 4.
7. Remove the locknut, two (2) washers, stop and bolt from the REAR of the seat
frame as shown in DETAIL "C" of FIGURE 4.
8. Remove the locknut, washer, coved spacer, nylon spacer, washer and bolt securing
the FRONT of the back angle bracket to the seat frame as shown in DETAIL "C" of
FIGURE 4.
9. Repeat STEPS 7-8 for the opposite side of the wheelchair.
10. Remove the back canes with back angle brackets from the seat frame.
11. Align FRONT of seat frame with wheelchair front frame as shown in DETAIL "B" of
FIGURE 4.
12. Install two (2) allen screws and locknuts to secure FRONT of seat frame to
wheelchair front frame as shown in DETAIL "B" of FIGURE 4.
13. Install the screw, nylon washer and locknut to secure the REAR of the seat frame to
the wheelchair frame in the position noted in STEP 4.
14. Install the bolt, stop, two (2) washers and locknut onto the rear of the seat frame as
shown in DETAIL "C" of FIGURE 4.
15. Repeat for opposite side of the wheelchair.
16. Align the latches on the back angle brackets with the stops installed in STEP 14 as
shown in DETAIL "D" of FIGURE 4.
17. Secure the FRONT of the back angle brackets to the seat frame with the bolts,
washers, nylon spacers, coved spacers, washers and locknuts as shown in DETAIL
"C" of FIGURE 4.
18. Reverse STEPS 1-3 to install wheel locks, seat upholstery and rear wheels.
SECTION 4
FRAME
FRAME
Page 29
Part No. 1110545
29
A-4™
Screw
Locknuts
Wheelchair
Front Frame
FRONT of
Seat Frame
Allen Screw
Seat
Frame
Bolt
Bolt
Nylon
Spacer
Coved Spacer
Washers
Washer
Locknuts
Back
Angle
Bracket
Stop
Hook
Hook
Stop
Back
Angle
Bracket
Seat Rail
DETAIL "A" - REAR SEAT FRAME
DETAIL "D" - INSTALLING
THE BACK
DETAIL "C" -
REMOVING/INSTALLING
THE BACK
DETAIL "B" - FRONT SEAT FRAME
FIGURE 4 - REPLACING SEAT FRAME
SECTION 4
FRAME
FRAME
Screw
Locknut
REAR of Seat
Frame
Wheelchair
Frame
Nylon
Washer
Page 30
A-4™
30
Part No. 1110545
GENERAL
GUIDELINES
OPENING/CLOSING CAMBER CLAMPS (FIGURE 5)
WARNING
QUICK RELEASE LEVERS - Make sure the quick release levers are in the
CLOSED position BEFORE using the wheelchair, otherwise personal
injury or damage to the wheelchair may result.
STANDARD CAMBER CLAMPS - Make sure the hex screws are securely
tightened BEFORE using the wheelchair, otherwise personal injury or
damage to the wheelchair may result.
CAUTION
DO NOT close the quick-release levers or tighten the socket screws
without camber inserts in the axle tube. Damage to the axle tube will
occur.
1. Perform one (1) of the following to open a camber clamp:
A.QUICK RELEASE LEVERS- Pull the quick release lever to the open
position.
B.STANDARD CAMBER CLAMPS- Loosen, but do not remove the socket
screw on the camber clamp.
2. Perform one (1) of the following to close a camber clamp:
A.QUICK RELEASE LEVERS- Secure the quick release lever to the camber
clamp by threading it completely into the camber clamp. Push the quick release
lever on the camber clamps to the closed position.
B.STANDARD CAMBER CLAMPS- Securely tighten the socket screw to
secure the axle tube.
Closed Position
Open Position
Quick
Release
Lever
Camber Clamp
Socket Screw
STANDARD
QUICK RELEASE
Camber
Clamp
FIGURE 5 - OPENING/CLOSING CAMBER CLAMPS
SECTION 4
FRAME
FRAME
Page 31
Part No. 1110545
31
A-4™
GENERAL
GUIDELINES
DETERMINING TOE IN/TOE OUT (FIGURE 6)
1. Inflate all pneumatic tires to recommended tire pressures (listed on the sidewall of
the tire).
2. Measure the distance between the rear of the rear wheels and front of the rear
wheels at the centerline of the rear wheels (FIGURE 6).
NOTE: For optimum accuracy, perform STEP 2 with the wheelchair occupied.
3. Determine the difference between the two (2) measurements. If thedifference
between thetwo (2) measurementsisNOTwithin+1/8-inch, one (1) of two
(2) conditions exists:
A. If theback centerline measurementof the rear wheels isSMALLERthan
thefront centerline measurementof the rear wheels, aTOE-OUT
condition exists (FIGURE 6).
B. If theback centerline measurementof the rear wheels isLARGERthan
thefront centerline measurementof the rear wheels, aTOE-INcondition
exists (FIGURE 6).
4. If the difference between the measurements is not within +1/8-inch, correct the
toe-in/toe-out condition. Refer to ADJUSTING TOE-IN/TOE-OUT in this section of
the manual.
Toe-in
Smaller Than Front
Larger Than Front
Toe-out
Front of Wheelchair
TOP VIEW OF WHEELCHAIR
Rear Centerline of
Wheelchair
Front Centerline of
Wheelchair
Centerline of the Rear Wheel
DETAIL "A" -
SIDE VIEW OF
WHEELCHAIR
FIGURE 6 - DETERMINING TOE IN/TOE OUT
SECTION 4
FRAME
FRAME
Measure Here
Page 32
A-4™
32
Part No. 1110545
GENERAL
GUIDELINES
ADJUSTING TOE IN/TOE OUT
NOTE: If the axle tube has been repositioned or replaced, proceed to ADJUSTING THE AXLE
TUBE in this section of the manual.
AXLE TUBE POSITIONING FOR 0°/3°, 0°/6°, 3°/6° OR 9°/12°
CAMBER INSERTS (FIGURE 7)
CAUTION
DO NOT rotate the axle tube if the axle tube is locked out by the toe
adjustment rings. If a locked out axle tube is rotated, damage to the toe
adjustment rings will occur.
NOTE: Refer to FIGURE 7 for a description of a locked out axle tube.
There is NO adjustment required to maintain a correct toe in/toe out measurement.
NOTE: The axle tube will be locked out by the toe adjustment rings and will NOT rotate.
AXLE TUBE POSITIONING FOR 0°/9°, 0°/12°,
3°/9°, 6°/9° , 3°/12° OR 6°/12° CAMBER INSERTS (FIGURE 7)
NOTE: Stand behind the wheelchair to determine LEFT or RIGHT.
WARNING
QUICK RELEASE LEVERS - Make sure the quick release levers are in the
CLOSED position BEFORE using the wheelchair, otherwise personal
injury or damage to the wheelchair may result.
STANDARD CAMBER CLAMPS - Make sure the socket screws are
securely tightened BEFORE using the wheelchair, otherwise personal
injury or damage to the wheelchair may result.
CAUTION
DO NOT close the quick-release levers or tighten the socket screws without
camber inserts in the axle tube. Damage to the axle tube will occur.
0°, 3° or 6° Camber.
1. Open the camber clamps. Refer to OPENING/CLOSING CAMBER CLAMPS in this
section of the manual.
2. Slowly rotate the axle tube until the tab on the LEFT toe adjustment ring is stopped
against the LOWER edge of the camber clamp (FIGURE 7).
3. Close the camber clamps. Refer to OPENING/CLOSING CAMBER CLAMPS in this
section of the manual.
9° or 12° Camber.
1. Open the camber clamps. Refer to OPENING/CLOSING CAMBER CLAMPS in this
section of the manual.
2. Slowly rotate the axle tube until the tab on the RIGHT toe adjustment ring is stopped
against the UPPER edge of the camber clamp (FIGURE 7).
3. Close the camber clamps. Refer to OPENING/CLOSING CAMBER CLAMPS in this
section of the manual.
SECTION 4
FRAME
FRAME
Page 33
Part No. 1110545
33
A-4™
LEFT Tab
Stopped Against
LOWER Edge of
Camber Clamp
LEFT Toe
Adjustment
Ring
Axle Tube - LOCKED OUT by
Toe Adjustment Rings and
Will NOT Rotate
RIGHT Tab
Stopped
Against UPPER
Edge of
Camber Clamp
RIGHT Toe
Adjustment
Ring
FIGURE 7 - ADJUSTING TOE IN/TOE OUT
REAR OF
WHEELCHAIR
AXLE TUBE POSITIONING FOR 0°/9°, 0°/12°, 3°/9°, 3°/12°,6°/9° or
6°/12° CAMBER INSERTS
0°, 3° OR 6° CAMBER
9° OR 12° CAMBER
Camber
Clamp
LEFT Toe
Adjustment Ring
Axle Tube - Will
Rotate DOWN
Only
Camber
Clamp
RIGHT Toe
Adjustment
Ring
Axle Tube - Will
Rotate UP Only
LEFT Toe
Adjustment
Ring
Camber
Clamp
Camber
Clamp
RIGHT Toe
Adjustment Ring
LEFT Tab
Stopped
Against
LOWER
Edge of
Camber
Clamp
RIGHT Tab Stopped Against UPPER Edge of
Camber Clamp
REAR OF WHEELCHAIR
REAR OF WHEELCHAIR
AXLE TUBE POSITIONING FOR 0°/3°, 0°/6°, 3°/6° OR 9°/12° CAMBER INSERTS
- NO ADJUSTMENT REQUIRED -
SECTION 4
FRAME
FRAME
Page 34
A-4™
34
Part No. 1110545
SAFETY
INSPECTION
ADJUSTING THE AXLE TUBE (FIGURE 8)
WARNING
QUICK RELEASE LEVERS - Make sure the quick release levers are in the
CLOSED position BEFORE using the wheelchair, otherwise injury or
damage to the wheelchair may result.
STANDARD CAMBER CLAMPS - Make sure the socket screws are
securely tightened BEFORE using the wheelchair, otherwise injury or
damage to the wheelchair may result.
CAUTION
DO NOT close the quick-release levers or tighten the hex screws without
camber inserts in the axle tube. Damage to the axle tube will occur.
NOTE: Before performing this procedure, make sure the camber inserts are positioned to the
lowest degree of camber. Refer to REPOSITIONING CAMBER INSERTS (ADJUSTING REAR WHEEL
CAMBER) in this section of the manual.
NOTE: Stand behind the wheelchair to determine LEFT or RIGHT.
1. If necessary, open BOTH camber clamps. Refer to OPENING/CLOSING CAMBER
CLAMPS in this section of the manual.
2. Loosen the set screw that secures each toe adjustment ring to the axle tube
(FIGURE 8).
3. Using an "L" square, rotate the axle tube until the flat edge of the camber insert is at
a 90° angle with the ground/floor as shown in FIGURE 8.
4. Close the RIGHT camber clamp. Refer to OPENING/CLOSING CAMBER clamps in
this section of the manual.
5. Rotate the LEFT toe adjustment ring until the tab stops against the LOWER edge of
the camber clamp.
6. Securely tighten set screw on LEFT toe adjustment ring.
7. Measure the distance between the rear of the rear wheels and front of the rear
wheels at the centerline of the rear wheels. Refer to DETERMINING TOE IN/TOE
OUT in this section of the manual.
8. Perform one (1) of the following:
A.TOE IN/TOE OUT MEASUREMENT IS WITHIN ±1/8-INCH -Proceed
to STEP 8.
B.TOE IN/TOE OUT MEASUREMENT IS NOT WITHIN ±1/8-INCH -
Repeat STEPS 1-7 until toe in/toe out measurement is within ±1/8 inch.
9. Open the RIGHT camber clamp. Refer to OPENING/CLOSING CAMBER CLAMPS in
this section of the manual.
10. Reposition the camber inserts to the highest degree of camber. Refer to
REPOSITIONING CAMBER INSERTS (ADJUSTING REAR WHEEL CAMBER) in
this section of the manual.
11. Repeat STEP 3.
12. Close the LEFT camber clamp. Refer to OPENING/CLOSING CAMBER CLAMPS in
this section of the manual.
13. Rotate the RIGHT toe adjustment ring until the tab stops against the UPPER edge of the
camber clamp.
14. Securely tighten set screw on RIGHT toe adjustment ring.
SECTION 4
FRAME
FRAME
Page 35
Part No. 1110545
35
A-4™
SAFETY
INSPECTION
15. Repeat STEP 7.
16. Perform one (1) of the following:
A.TOE IN/TOE OUT MEASUREMENT IS WITHIN ±1/8-INCH -
1. Proceed to STEP 17.
B.TOE IN/TOE OUT MEASUREMENT IS NOT WITHIN ±1/8-INCH -
1. Repeat STEP 1.
2. Loosen the set screw on the RIGHT toe adjustment ring.
3. Repeat STEP 3.
4. REPEAT STEPS 12-16 until toe in/toe out measurement is within ±1/8 inch.
17. If desired, reposition camber inserts to the desired degree of camber. Refer to
REPOSITIONING CAMBER INSERTS (ADJUSTING REAR WHEEL CAMBER) in
this section of the manual.
FIGURE 8 - ADJUSTING THE AXLE TUBE
LOWER DEGREE OF CAMBER
Camber
Clamp
Axle Tube - Will
Rotate UP Only
LEFT Toe
Adjustment
Ring
LEFT Tab
Stopped
Against
LOWER
Edge of
Camber
Clamp
Camber
Clamp
RIGHT Toe
Adjustment Ring
RIGHT Tab Stopped Against UPPER Edge of
Camber Clamp
Axle Tube - Will Rotate DOWN Only
HIGHER DEGREE OF CAMBER
"L" Square
90°
Angle
Flat Edge of
Camber Insert
Ground/Floor
STEP 3
SECTION 4
FRAME
FRAME
Page 36
A-4™
36
Part No. 1110545
GENERAL
GUIDELINES
REPOSITIONING CAMBER INSERTS (ADJUSTING REAR
WHEEL CAMBER) (FIGURE 9)
NOTE: Perform this procedure on one (1) side of the wheelchair at a time for ease of adjustment.
1. Open the camber clamp. Refer to OPENING/CLOSING CAMBER clamps in this
section of the manual.
2. Pull one (1) rear wheel with the camber insert out of the axle tube.
3. Remove the rear wheel from the camber insert. Refer to REMOVING/INSTALLING
REAR WHEELS in SECTION 5 of the manual.
4. Rotate the camber insert 180°.
5. Reinstall the rear wheel into the camber insert. Refer to REMOVING/INSTALLING
REAR WHEELS in SECTION 5 of the manual.
WARNING
NEVER position the camber inserts in the axle tube with more than 3-
inches (12 indexing marks showing) of the camber insert outside of the
axle tube. Otherwise, the camber inserts will not be securely tightened in
the axle tube resulting in possible injury to the user or damage to the
wheelchair.
6. Position camber insert to desired position. Make sure there are no more than 3-
inches (12 indexing marks) of the camber inserts outside of axle tube.
7. Slide the indexing ring on the camber insert until it is flush with the camber clamp.
WARNING
QUICK RELEASE LEVERS - Make sure the quick release levers are in the
CLOSED position BEFORE using the wheelchair, otherwise personal
injury or damage to the wheelchair may result.
STANDARD CAMBER CLAMPS - Make sure the socket screws are
securely tightened BEFORE using the wheelchair, otherwise personal
injury or damage to the wheelchair may result.
CAUTION
DO NOT close the quick-release levers or tighten the socket screws
without camber inserts in the axle tube. Damage to the axle tube will
occur.
8. Close the camber clamp. Refer to OPENING/CLOSING CAMBER clamps in this
section of the manual.
9. Repeat STEPS 1-8 for opposite side of wheelchair.
NOTE: Before using the wheelchair, make sure both camber inserts are set to the same indexing
mark. This will make sure the distance between the rear wheel and the wheelchair is the same on
both sides.
10.Wheelchairs equipped with 0°/9°, 0°/12°, 3°/9°, 6°/9°, 3°/12° or 6°/12°
camber inserts -Adjust the toe in/toe out of the wheelchair. Refer to
ADJUSTING TOE IN TOE OUT in this section of the manual.
SECTION 4
FRAME
FRAME
Page 37
Part No. 1110545
37
A-4™
UPHOLSTERY
WARNING
Make sure the detent pin and locking pins of the quick/quad-release axle
are fully released BEFORE operating the wheelchair.
The locking pins MUST be protruding past the inside of the rear wheel axle
bushing for a positive lock.
Keep locking pins clean.
11. If the locking pins of the quick/quad-release axles are not protruding past the inside
of the axle bushing or there is too much movement of the rear wheel assembly in a
back and forth position, refer to ADJUSTING QUICK-RELEASE AXLES or
REMOVING THE PLAY FROM THE REAR WHEELS in SECTION 5 of this manual.
12. Ensure the wheelchair is parallel to the floor. Refer to ADJUSTING CASTER
HEIGHT in SECTION 5 of the manual.
13. Ensure anti-tippers are adjusted properly. Refer to ANTI-TIPPER ADJUSTMENT/
REPLACEMENT in SECTION 7 of this manual.
Camber Insert - Rotate 180°
Indexing Ring
Axle Tube
Camber
Clamp
Indexing
Marks
FIGURE 9 - REPOSITIONING CAMBER INSERTS
(ADJUSTING REAR WHEEL CAMBER)
SECTION 4
FRAME
FRAME
Page 38
A-4™
38
Part No. 1110545
Wheelchair
Frame
UPHOLSTERY
ADJUSTING WHEELBASE LENGTH (ADJUSTING CENTER
OF GRAVITY) (FIGURE 10)
WARNING
The position of the footrest, seat angle, back angle, seating system/
upholstery, caster size and position, rear wheel size and position, use of
anti-tippers, as well as the user condition directly relate to the stability of
the wheelchair. Any change to one (1) or any combination of the ten (10)
may cause the wheelchair to decrease in stability. EXTREME care MUST
be taken when changing the stability of the wheelchair. Refer to the chart
in STABILITY in SECTION 1 of this manual.
NOTE: The camber bar is always mounted to the BOTTOM of the wheelchair frame.
1. Loosen, but do not remove the two (2) socket screws that secure the axle tube to
the wheelchair frame.
2. Position the camber clamps on the wheelchair frame at the desired position.
LENGTHENING THE WHEELBASEwill increase the stability and maintain
standard maneuverability of the wheelchair.
SHORTENING THE WHEELBASEwill increase the maneuverability, distribute
additional weight onto the rear wheels, and make the wheelchair less stable.
NOTE: The performance of the wheelchair will be affected if the camber clamps do not sit flush
on the wheelchair frame.
3. Securely tighten one (1) socket screw that secures the camber bar to the wheelchair
frame.
NOTE: Securely tightening one (1) socket screw at a time ensures that the camber clamps will sit
flush on the wheelchair frame.
4. Repeat STEP 3 for the opposite side of the wheelchair.
NOTE: The distance between the FRONT of the back post and the BACK of the top clamp on
each side of the wheelchair can be measured as an additional check to make sure the camber
clamps sit flush on the wheelchair frame (the measurements should be the same) (DETAIL "A").
5. Roll the wheelchair before using to make sure there is no excessive drag to either
side.
NOTE: If drag to either side occurs, refer to DETERMINING TOE IN/TOE OUT in this section of
the manual.
FIGURE 10 - ADJUSTING WHEELBASE LENGTH
(ADJUSTING CENTER OF GRAVITY)
SHORTENING
Axle Tube
LENGTHENING
Top
Clamp
Socket Screw -
Loosen But Do Not
Remove
Back Post
Camber Clamp
SECTION 4
FRAME
FRAME
DETAIL "A"
Measure this distance
Back Post
Top
Clamp
Page 39
Part No. 1110545
39
A-4™
SECTION 4
FRAME
FRAME
FIGURE 11 - ADJUSTING WHEELBASE WIDTH
ADJUSTING WHEELBASE WIDTH
(FIGURE 11)
NOTE: Perform this procedure on one (1) side of the wheelchair at a time for ease of adjustment.
1. Open the camber clamp. Refer to OPENING/CLOSING CAMBER CLAMPS in this
procedure of the manual.
WARNING
NEVER position the camber inserts in the axle tube with more than 3-inches
(12 indexing marks showing) of the camber insert outside of the axle tube.
Otherwise, the camber inserts will not be securely tightened in the axle tube
resulting in possible injury to the user or damage to the wheelchair.
2. Position the camber insert to the desired position. Make sure there are no more than
3-inches (12 indexing marks showing) of the camber inserts outside of the axle tube.
3. Slide the indexing ring on the camber insert until it is flush with the camber clamp.
NOTE: Before using the wheelchair, make sure both camber inserts are set at the same indexing
mark. This will make sure the distance between the rear wheel and the wheelchair is the same on
both sides.
WARNING
QUICK RELEASE LEVERS - Make sure the quick release levers are in the
CLOSED position BEFORE using the wheelchair, otherwise personal
injury or damage to the wheelchair may result.
STANDARD CAMBER CLAMPS - Make sure the socket screws are
securely tightened BEFORE using the wheelchair, otherwise personal
injury or damage to the wheelchair may result.
CAUTION
DO NOT close the quick-release levers or tighten the socket screws
without camber inserts in the axle tube. Damage to the axle tube will
occur.
4. Close the camber clamp. Refer to OPENING/CLOSING CAMBER CLAMPS in this
procedure of the manual.
5. Repeat STEPS 1-4 for the opposite side of the wheelchair.
Indexing Ring
Axle Tube
Camber
Clamp
Indexing Marks
Camber
Insert
Camber
Insert
Page 40
A-4™
40
Part No. 1110545
SECTION 4
FRAME
FRAME
|
