Invacare MWD, RWD Replacing Stabilizer, Cylinder Spring Figure, Adjusting Weight Distribution

Page 75

MWD WHEELCHAIRSPROCEDURE 15

REPLACING STABILIZER

ADJUSTING WEIGHT DISTRIBUTION

CYLINDER SPRING (FIGURE 9)

(FIGURE 10)

NOTE: Stabilizer springs are only on wheelchair mod-

NOTE: The seat mount plates and seat support brackets

els built before 7/1/1999.

allow seat frame to be repositioned along the base frame.

1.Remove mounting screw and locknut that secures NOTE: The position of the seat support brackets is factory top of the stabilizer fork assembly to the base frame. set at 5-1/2-inches from the front end of the base frame.

2.

Unthread adjustment barrel and remove from stabi-

Use the following chart as a starting point.

 

 

 

lizer rod.

Weight of

Distance of Seat

3.

Unthread jam nut and remove from stabilizer rod.

User

Support Bracket*

 

 

4.

Unthread adjustment nut and remove from stabilizer

under 200-lbs

5-7-inches

 

 

 

rod.

over 200-lbs

6-8-inches

5.

Remove spring retainer from stabilizer rod.

* Distance measured from the front of the base frame to

6.

Remove existing stabilizer spring.

the front of the seat support bracket.

 

 

7.

Install NEW stabilizer spring.

NOTE: Following the above chart will put 85-90% of the

total weight of the chair and user over the large wheels.

8.

Reinstall spring retainer.

However, these settings may not be the most desirable in

 

 

9.

Reinstall adjustment nut.

terms of maneuverability and comfort for the user.

10.

Reinstall jam nut.

Adjustment for Optimum Performance

11.

Reinstall adjustment barrel.

1. Loosen the four (4) mounting screws that secure the

 

 

12.

Adjust stabilizer. Refer to ADJUSTING STABILIZERS

seat support brackets to the base frame.

 

in this procedure of the manual.

2. Adjust seat back until one (1) of the following occurs:

 

 

 

Base Frame

A. The clearance of the front riggings and the stabi-

 

 

 

 

lizers is at a minimum or

 

 

 

B. The rear stop is contacted.

 

Mounting

WARNING

 

DO NOT adjust seat beyond limit stops.

 

Screw

 

 

 

 

3. Retighten mounting screws securing the seat support

 

 

brackets to the base frame.

Locknut

Adjustment

4. Test wheelchair for handling.

 

5. If handling of the power wheelchair is drifting, repeat

 

Barrel

 

Jam Nut

thisproceduremovingseatupinsmallincrementsuntil

 

the chair handles properly.

 

 

 

 

6. Once the seat is adjusted to the point of proper han-

 

Adjustment

dling, comfort adjustments can be made

 

 

 

Nut

7. Check distance the stabilizer wheels are off the floor.

 

 

A. If distance is between 3/8 and 1/2-inches off of the

Stabilizer

 

floor the user will experience a “normal” amount of

Spring

Spring

rocking when stopping or negotiating steeper in-

 

Retainer

clines, depending on the amount of braking.

 

 

B. If distance is greater than 1/2-inches off of floor

 

Stabilizer

the amount of rocking the user experiences when

 

Rod

stopping or negotiating steeper inclines will in-

 

 

crease.

FIGURE 9 - REPLACING STABILIZER CYLINDER SPRING

 

 

75

 

M W D

W H E E L C H A I R S

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Contents Storm Series Wheelchairs E C I a L T E S R N I N GTable of Contents Table of Contents Limited Warranty Specifications Specification SArrow FWD has a 400 lb. rating SpecificationsRepair or Service Information Procedure General GuidelinesMOTOR/GEARBOX General Guidelines ProcedureLocated on inside MWD ModelsFWD Models Suspension ArmField Load Test Figure Using Hydrometer to Check Battery Cells Lead Acid FigureTroubleshooting Procedure Battery ChargerAccording to Charge Motor Testing FigureProcedure Troubleshooting Number of Floating Balls Will VaryCap Motor Pin Motor Connector Ohmmeter ELECTRO-MECHANICAL Parking Brake Testing FigureOhmmeter Motor Connector Cap Motor Pin Motor ConnectorStandard Seat Frame Hardware Torque SpecificationsLoctite and Torque to 75 in/lbs Torque to 156 in/lbs Adjustable Seat FrameHardware Torque Specifications Procedure Captains VAN SeatPneumatic Wheel Halves 8 inch Torque to 18 in/lbs Inch WheelsWheel Halves Pneumatic with Flat-Free Wheel Halves Torque toPneumatic with Flat-Free Inch Wheels Wheel HalvesTorque to 360 in/lbs Torque to 156 in/lbs Torque to 156 in/lbs 1020 in/lbsWheel Halves Torque to In/lbs Torque to 156 in/lbs Torque to 160 in/lbs LoctiteReplacing Captains VAN Seat Armrest Plate Figure Arms ProcedureThis Procedure Includes the Following Replacing Armrest Pads Captains VAN Seats FigureReplacing Back Upholstery Figure Replacing Seat Positioning Y Strap Captains VAN SeatsH O L S T E R Y M E Mounting Screws REMOVING/INSTALLING Standard Seat Frame Subassembly FigureSeat Frame Procedure Replacing Exact Same Size Standard Seat FrameInch Inch deep Inches Adjustable Seat Frame FigureSeat Frame InchesA T M E Torque toChanging Seat Depth Between 12 and 15- Inches Figure Changing Seat Width Standard and Adjustable Seat Frame Mounting Screws Torque to 75-inch poundsStandard Seat Frame Side Spacers Center Seat WidthCenter Frame Component ReplacementPounds Coved WasherTorque to Inch pounds INSTALLING/REMOVING Captains VAN Seat Assembly FigureInstalling Captains Van Seat Removing Captains Van SeatCaptains Van Seat Adjustable FramesLocknut Quick Release Pin REMOVING/INSTALLING Seat PAN FigureInstalling Remove the seat cushion from the seat panSeat Angle Adjustment Installation OrientationSeat Dump S E M E Base Frame ProcedureReplacing Seat Mounting Plates Figure Replacing Seat Support Brackets FigureChannel Cover Seat Support Mounting Screw Procedure Base FrameReplacing Seat Support Bracket T-NUTS Figure Mounting Screws Washer Seat Support Bracket BaseT-Nut FrameArrow FWD Model Figure Replacing Battery Charger Bracket and T-NUTBattery Charg er Charger Connector Mount RWD and MWD Models FigureTightensecurely Reverse A, 3B or 3C REMOVING/INSTALLING Seat Stop Screws FigureMounting Screw Battery Charger Connector Replace the battery charger mount bracket and seCJ Bracket Mounts REMOVING/INSTALLING CJ Back Brackets FigureBack Frame Procedure C K M EMine if new back upholstery is needed Procedure Back FrameChanging Back Height Figure Heavy Duty ModelsSteps 4,8 Steps 2Steps 6,11 Steps 6,17Wheelchair to hold the insert in place Back Angle Adjustment FigureT T E R I E S Batteries ProcedureConnecting Battery Cables Procedure 9BATTERIESGroup 24 Batteries Battery Box Bottom TWO 2 Connector Batteryboxone 1 Connector BatteryboxGroup 22 Battery Base Frames Figure Battery terminal endsRemove battery terminal caps from battery Box Single BatteryBottom Tery Cable Rear Jumper Battery FrontDescription and Use of Battery Chargers When to Charge Batteries FigureBattery Discharge Indicator BDI in LCD Readout Battery Discharge Indicator BDIRequired Items Cleaning Battery Terminals INSTALLING/REMOVING Group 24 Battery Boxes FigureIf one 1 battery is defective Recommended Battery TypesINSTALLING/REMOVING Group 22 Battery BOX Figure REMOVING/INSTALLING the E Wiring Harness Figure Procedure Wiring HarnessThis manual R N E S S Recline Angle 4 inches 61o Adjusting Limit Switch FigurePerform one 1 the following Retention STRAP/RETAINERReplacing Retainer Bar Replacing Retainer ClipRetainer Clip ProcedureSpacer Locknuts Mounting Screws Battery Box Sub-Frame Spacer RetainerWHEELS/ Motors REMOVING/INSTALLING Drive Wheels FigureDrive Wheel Assembly Wheel Hub Four 4 Beveled Hex Nuts Replacing Pneumatic TIRES/ Tubes Drive WHEELS/CASTERSGearbox Suspension WHEELS/MOTORSApply Loctite 242 to the two 2 mounting screws Repeat Steps 1-4 for opposite wheel lock bracketRemoving Casters REMOVING/INSTALLING Casters FigureInstalling Casters Replacing Forks FigureWasher Shock Easier access to the motor/controller connectionMotor Connector Coupling Allen Locknut SpacerRemove motor with motor lock lever from suspen- sion arm Brake Release Shaft REMOVING/INSTALLING Motor GEARLESS/BRUSHLESSE C T R O N I C S REMOVING/INSTALLING Mkiv Controller FigureRepositioning Mkiv Joystick VAN Seat Models Figure ElectronicsArrow Fwd Model C L I N E R Positioning Limit Switch FigureSwitch Actuator Overtighten Sensor Washers ReclinerDo not Over-Tighten Gas Cylinder Actuator Replacing Recliner Cable Assemblies FigureGas Cylinder Rod Measures 3-21/32-inches Mounting Screws and WashersReplacing Gas Cylinder REPLACING/ADJUSTING GAS Cylinders FigureProcedure Recliner Adjusting Gas CylinderChanging Back Height Changing Seat Width Recliner ProcedureSeat Pan Removal/Replacement Procedures Changing Seat Depth FigureSpacer Base Frame Seat Mount Plate Inside Suspension Arm AssemblyInstallbatteryboxes.Referto INSTALLING/REMOV Remove seat pan on reclinerMWD Wheelchairs Procedure REMOVING/INSTALLING GroupBattery BOX Tray Figure Battery BOX SUB-FRAME FigureFrame Rear Lockn uts Procedure MWD WheelchairsFront Locknuts Battery Mount Installing Group 24 Components FigureShock Replacement Group 24 Battery Base Frames FigureSteps Secure the top of shock between battery mount Shock Battery Box Sub-Frame Retainer Clip Top of ShockLarge wheel assembly Install the NEW shockMounting Screw Suspension Arm Spring Washer Shock Spring Replacement FigureBattery Mount Bracket Base Frame Flat WasherReplacing Stabilizer Fork Assembly Figure Replacing Stabilizer Wheels FigureShock Spring Base Cylinder Spring Figure Adjusting Weight DistributionMWD Wheelchairsprocedure Replacing StabilizerAdjusting Stabilizers Figure Adjusting Spring CompressionHeight Adjustment Motor Gearbox Suspension Arm REMOVING/INSTALLING Gearbox FigureReplacing Suspension ARM Figure 16-18 x 1-1/4-inch Mounting Screws 16-18 x 2-1/2-inchBracket End Suspension Arm Inner Link Spacer Entation. Bracket End of Suspension ArmTubular End Suspension Arm Steps 6,10Sub-Frame Removing/Installing Group 22 Battery Box TrayShock Replacement Anti-Tipper Wheel ReplacementElement Procedure RWD WheelchairsBattery Tray ILocknutsBolts RubberScrews Bracket Shock Replacement FigureRWD Wheelchairs Procedure Mounting Wiring HarnessLocknut Shock Mounting Screw Suspension Arm Spacer TopShock Retainer Bar Shock Mounting Screw Suspension ArmGroup 24 Batteries only Apply Loctite RWD WheelchairsprocedureBase Frame Mounting Screw Rubber Element Replacement FigureShock Hex Screw Battery Mount Bracket Torque and Storm X wheelchairs16-18 2-inch 4-inch REMOVING/INSTALLING GearboxAdjusting Weight Distribution Figure Adjustment OptionsMove gearbox to the position determine in Step Adjusting Weight Distribution ProcedureRepositioning the MOTOR/ Gearbox Figure Mounting Screws Washer Seat Support Bracket Base FrameStandard Position Lengthens the wheel Repositioning the GEARLESS/BRUSHLESS Motor ,14Suspension Arm Mounting Washer Screws Install the new suspension arm onto the base frame ANTI-TIPPER Wheel Replacement FigureWashers Locknuts REMOVING/INSTALLING ANTI-TIP AssemblyAnti-Tip LowerFWD Wheelchairs Procedure REMOVING/INSTALLING Front Shroud FigureREMOVING/INSTALLING Rear Shroud Figure REMOVING/INSTALLING Side Shroud Assembly FigureREMOVING/INSTALLING Counterweight Figure Procedure FWD WheelchairsMounting Screw Washer Side Shroud Bracket Suspension Arm Bottom Shoulder Screw Bottom Slot in Mounting Bracket Replacing Group 24 Battery BOX SUB-FRAME FigureHandle Outside Lower EdgeCounterweight Mounting Bracket Counterweight Bottom Shoulder ScrewFor Clarity REMOVING/INSTALLING Shocks FigureBracket Mounting Screw Mounting Bracket Only Screw One 1 ShownTIE ROD Replacement Figure Complete revolution on the TOP TWO 2 tie rods Locknut Arm Small Washer Large Mounting Screw Suspension ArmSocket Suspension Screw ArmSHORT Motor Gearbox Sensor Cable Assembly Replacement FigureBattery wiring harness Detail C Remove the Existing sensor cable assemblyBattery Box Sub Frame Sensor Washer Left Motor Sensor Reinstall the battery boxes. Refer to InstallingTie Wrap C Replacing the Suspension ARM REMOVING/INSTALLING Wiring Harness FigureProcedure FWD Wheelchairs Tie Wrap BTie Wrap a 14 to 16 inches Inches 17 to 18 inches 19 to 20 inches Adjusting Weight Distribution For New Seat DepthHeight Footboard ADJUSTMENTS- DEPTH/HEIGHT/ANGLE FigureDepth AngleFootrest Angle Adjustments Front Shroud Footrest FWD Wheelchairs ProcedureRight Horizontal Position Cam105 106 Limtied Warranty Limited WarrantyOne InvacareWay ChedworthWay
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Arrow FWD, RWD, MWD specifications

Invacare is a renowned name in the field of mobility technologies, consistently innovating and enhancing the mobility devices market. Among its outstanding offerings are the Invacare MWD (Mid Wheel Drive), RWD (Rear Wheel Drive), and Arrow FWD (Front Wheel Drive) wheelchairs. Each of these models serves unique user needs, featuring distinct designs and functionalities.

The Invacare MWD is engineered for exceptional maneuverability. Its mid-wheel drive technology provides a centralized drive wheel, allowing for tight turns and easy navigation in confined spaces. This makes the MWD particularly suitable for indoor use, where space can be limited. The MWD also features advanced suspension systems, offering superior shock absorption. This results in a smoother ride over various terrains, enhancing user comfort and stability.

On the other hand, the Invacare RWD focuses on robust outdoor performance. With its rear-wheel drive configuration, this model has excellent traction and provides powerful acceleration. The RWD is designed for versatility, equipped with larger wheels that can handle uneven terrain while providing a stable ride. Its durable construction ensures enhanced longevity, making it an ideal choice for users who lead an active lifestyle and require reliable mobility solutions on rugged ground.

The Arrow FWD wheelchair brings another dimension with its front-wheel drive system. This design allows users to easily navigate obstacles as the front wheels can pivot over them. The Arrow FWD is particularly suited for both indoor and outdoor use, as it combines the agility of the MWD with the stability seen in the RWD. It features a compact design, making it easier for users to position themselves in various settings and social situations.

All three models utilize Invacare's cutting-edge technologies, such as advanced control systems and customizable seating options, enabling users to find their optimal comfort and support levels. The customizable features also cater to individual user needs, promoting enhanced independence.

In summary, Invacare’s MWD, RWD, and Arrow FWD wheelchairs represent an impressive blend of functionality, durability, and user-centric design. Each model presents its own unique technologies and attributes, allowing users to make informed choices based on their specific mobility requirements, lifestyle, and preferences. Whether navigating tight indoor spaces or tackling outdoor challenges, Invacare’s range of wheelchairs ensures that users can experience mobility with confidence and ease.
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