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