Invacare Pro Series manual Adjusting Front Caster Headtubes, Pro-SA Model Wheelchairs Figure

Page 35

CASTERS

PROCEDURE 5

 

 

8.Toproperlytightenfrontcasterforksandguardagainst flutter, perform the following check:

a.Tip back of wheelchair to floor.

b.Pivot both forks and casters to top of their arc simultaneously.

c.Let casters drop to bottom of arc (wheels should swing once to one-side, then immediately rest in a straight downward position).

d.Adjust locknuts according to freedom of caster swing.

9.Test wheelchair for maneuverability.

10.Readjust locknuts if necessary and repeat STEPS 8-9until correct.

11.Snap dust cover over the locknut and stem.

NOTE: An indexing notch has been put on the adjust- ment cam to help determine the adjustment cam po- sition for the opposite caster headtube.

8.Reinstall the locknut onto the top hex screw and se- curely tighten the two (2) hex screws and locknuts.

 

Wheelchair Frame

 

Adjustment Cam

Caster Headtube

 

Caster

Indexing Notch

 

Headtube

Hex Screws

Perpendicular

and Locknuts

to Floor

 

C A S T E R S

ADJUSTING FRONT CASTER HEADTUBES

WARNING

The following procedure should be per- formed only by an authorized Invacare

Caster

Headtube

Caster/Fork

Dealer or Qualified Technician.

"L" Square

Flat Surface

A NOTE ABOUT CASTER HEADTUBE ADJUSTMENTS

Whenever the seat height is raised or lowered by chang- ing the caster size, fork stem length, rear wheel size or axle mounting plate adjustments, the caster angle needs to be checked to maintain a 90o angle between the caster headtube and the ground/floor. Caster headtubes that are perpendicular to the floor will roll better, track straighter and minimize any "3-wheeling" of the wheelchair.

Pro-SA Model Wheelchairs (FIGURE 3)

1.Place the wheelchair on a flat surface.

2.Loosen, but do not remove, the two (2) hex screws and locknuts that secure the caster headtube to the wheelchair frame.

3.Remove the TOP locknut and adjustment cam from the caster headtube.

4.Position a large right triangle or "L" square on the flat surface and against the caster headtube.

5.Position the caster headtube flat against the right tri- angle or "L" square.

6.Reinstall adjustment cam onto the top hex screw.

7.With the caster headtube flat against the right triangle or "L" square, rotate and position the adjustment cam until the adjustment cam sits flush in the grooves of the caster headtube.

Indexing Notch

CASTER

TRAILING

CASTER

LEADING

Floor

FIGURE 3 - ADJUSTING FRONT CASTER

HEADTUBES - PRO-SA MODEL WHEELCHAIRS

3 5

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Contents Pro Pro-T Page Table of Contents Special Notes Special NotesSafety Summary Safety SummaryTire Pressure SAFETY/HANDLING of Wheelchairs Method StairwaysOther Seats Percentage of Weight DistributionTransferring to and from REACHING, Bending Backwards Functional Reach from a WheelchairREACHING, LEANING, Bending and Bending Forward Specifications SpecificationsSafety Inspection Check List Safety Inspection ChecklistTROUBLESHOOTING/MAINTENANCE TroubleshootingMaintenance Maintenance Safety PrecautionsProcedure Footrest INSTALLING/REMOVING Footrests FigureAdjusting Footrest Height Figure Installing Adjustable Angle FLIP-UP Footplate Hinge FigureFlip the footplate hinge to the UP position Footrest ProcedureInstalling Adjustable Angle Flip-up Footplate Adjustable Angle Flip-up Footplate Depth AdjustmentComposite Footplates Replacing Heel Loops FigureImpact GUARDS/CALF Strap Figure Release Lever Calfpad Adjust Calfpad Secure Calfpad INSTALLING/REMOVING Elevating Legrests FigureAdjustable Footplate Adjusting CalfpadsWashers Basketball Roller Tube Installing Basketball Roller FigureSaddle Bolts Footrest Coved Washers Basketball Roller LocknutsH O L S T E R Y Upholstery ProcedureReplacing Seat Upholstery Figure Back UpholsteryBack canes AdjustingAdjustable Tension Back Upholstery Installing Adjustable Tension Back Upholstery FigureUpholstery Replacing Adjustable Tension Back Upholstery FigureAdjustable Tension Straps H O L S TWHY USE Adjustable Tension Back Guard Installing Fabric Clothing Guards FigureFabric Clothing FOLDING/UNFOLDING Back Folding Back Wheelchairs only Figure Adjusting Back Height FigureProcedure Frame M EBack Canes With Push Handles Adjusting Rear Seat Height FigureAdjusting Back Angle Folding Back Wheelchairs only Figure Frame ProcedureBack Angle to Seat Rail Reinstall the washer and locknut onto the bottom hex screw Installing Half ARM FigureAdjusting Half ARM Height Figure Arms ProcedureInstalling Installing the T-ARM Sockets FigureINSTALLING/REMOVING the T-ARMS Figure Procedure ArmsDepth Figure Adjusting the T-ARMSWidth Figure Height FigureArm Clamp Arm Socket Reposition the arm tube on the T-arm postArm Sockets Figure Bottom Socket Screws Replacing the Locking Lever T-ARMS FigureHeight Installing Flip Back Arms FigureAdjusting Flip Back Arms Figure LengthThreaded Half Clamp Installing Rigid Clothing Guards FigureGuard Slot S T E R S REPAIRING/REPLACING Pneumatic Caster TIRE/TUBEINSTALLING/REPLACING Front Caster Forks Figure Procedure CastersPro-SA Model Wheelchairs Figure Adjusting Front Caster HeadtubesALL Pro Series Wheelchairs Except Pro-SA Figure Adjusting Caster Headtube Height Pro-SA Wheelchairs OnlyRepositioning Caster Headtubes on Wheelchair Frame Figure Repeat Steps 1-8for the opposite side of the wheel- chairALL PRO Series Wheelchairs Except PRO-SA Casters ProcedureProcedure For Repositioning the Front Caster Headtubes PRO-SASpacer Caster Headtube Fork Stem Locknut Bolt Front Caster Installing QUICK-RELEASE Casters FigureRepeat Steps 1-4for the opposite side of the wheel- chair Rear Wheels Procedure REMOVING/INSTALLING Rear Wheels FigureAdjusting QUICK-RELEASE Axles Figure And/or Out Installing QUAD-RELEASE Axles FigureAdjusting QUAD-RELEASE Handles Figure Procedure Rear WheelsRemoving the Play From the Rear Wheels REPAIRING/REPLACING Pneumatic Rear Wheel TIRE/ TubeAdjusting Wheelbase Length Figure Adjusting Wheelbase Width FigureWheelchair Three 3 Camber Frame Washers Adjusting Rear Wheel Camber FigureJam Nuts Axle Mounting Plate Axle Bushing Washer Coved Axle Washers Mounting Locknut Plate OneToe-out Toe-in Smaller Than Front Larger Than Front TOE-IN/TOE-OUT Alignment Figures 8Rear Wheelchair Centerline Conditions existsE E L S REPLACING/ADJUSTING the Wheel Lock FigureCorrecting TOE-IN/TOE-OUT Condition FigureInstalling the Anti-tippers Wheel Lock Extension Handle Installation FigureINSTALLING/ADJUSTING the ANTI-TIPPERS Figure Adjusting the High/Undermount Wheel LockWheelchair Frame Anti-tipper Adjusting the Anti-tipper HeightAdjust HeightPhillips Screw Handrim Installing/Replacing Handrims Spoke Rear Wheels FigureAdjusting Handrims Spoke Rear Wheels Figure HandrimsLink Phillips Screw Rear Wheel HandrimComposite Rim Locknut Seat to Floor Height Determination Figures 1 Seat to Floor ProcedurePositioning Front Caster on the Fork Changing Seat to Floor HeightPositioning Caster Headtubes on the Wheelchair Frame Rear Seat to Floor Heights Caster Headtube Front Seat to Floor Heights PRO-SA only Seat to FloorprocedurePage A N T Y Limited WarrantyWarranty One Invacare Way
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