MWD WHEELCHAIRS

PROCEDURE 15

 

 

 

10.Apply Loctite 242 and torque the mounting screw that securesthespacerbetweenthebatterymountbracket and base frame. Torque to 160-inch pounds.

11.Reassemble large wheel to hub assembly and Torque to 160-inch pounds.

12.Repeat this procedure for the opposite shock.

13.Reinstall the battery box. Refer to INSTALLING/RE- MOVING GROUP 22 BATTERY BOX in PROCE- DURE 9 of this manual.

Battery Mount Bracket

Base Frame

Mounting

 

 

 

Screw

 

Flat Washer

Mounting

Screw

Suspension

Arm

Spring

 

 

Washer

 

 

Inner Link Spacer

 

Stabilizer*

Shock

Locknut

 

 

Stabilizer Bracket

 

 

NOTE: Top of stabilizer exploded away for clarity only.

*NOTE: The spring shown on the stabilizer is for wheel- chair models built before 7/1/1999

FIGURE 6 - SHOCK REPLACEMENT - GROUP 22

BATTERY BASE FRAMES

SHOCK SPRING REPLACEMENT (FIGURE 7)

NOTE: Heavy Duty Models Only. Shock springs on stan- dard models cannot be individually replaced. A new shock assembly must be installed. Refer to SHOCK REPLACE- MENT in this procedure of the manual.

1.Remove the front battery box. Refer to INSTALLING/ REMOVING GROUP 24 BATTERY BOXES or IN-

STALLING/REMOVING GROUP 22 BATTERY BOX in PROCEDURE 9 of this manual.

2.Perform one (1) of the following:

A.(Group 24 Battery Base Frames) Loosen the mounting screw that secures the battery box re- tainer between the battery box sub frame assem- bly and the base frame.

B.(Group 22 Battery Base Frames) Loosen the mounting screw that secures the battery box spacerbetweenthebatteryboxtraymountbracket and the base frame.

3.Remove the mounting screw that secures the top of the stabilizer cylinder to the base frame.

4.Perform one (1) of the following:

A.(Group 24 Battery Base Frames) Remove the mounting screw that secures the top of the shock between the battery box sub-frame and the base frame.

B.(Group 22 Battery Base Frames) Remove the mounting screw that secures the top of the shock between retainer clip and the battery box tray mount bracket and the base frame.

NOTE: (Group 24 Battery Base Frames Only)Remove and hold onto the retainer clip for reinstallation of shock.

5.Swing the top of both the stabilizer cylinder and the shock forward.

6.Hold the spring retainer and turn the shock eyelet as- sembly COUNTERCLOCKWISE to unthread it from the shock.

7.Remove the spring retainer and spring.

8.Place the NEW spring onto the shock.

9.Reinstall the shock eyelet assembly and the spring retainer onto the NEW spring.

10.While holding the spring retainer, torque the shock eyelet assembly to 245-inch pounds.

11.(Group 24 Battery Base Frames) Position the re- tainer clip between the shock and the battery box sub- frame making sure the retainer clip mounting hole is towards the bottom and the closed end of the clip is against the battery box retainer.

12.Perform one (1) of the following:

A.(Group 24 Battery Base Frames) Apply Loctite 242 and torque the mounting screw that secures the battery box retainer to the base frame to 160- inch pounds.

B.(Group 22 Battery Base Frames) Apply Loctite 242 and torque the mounting screw that secures the battery mount bracket to the base frame to 160-inch pounds.

13.Secure the top of the shock and retainer clip (Group

24)to base frame. Apply Loctite 242 and torque to

160-inch pounds.

M W D

W H E E L C H A I R S

73

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Invacare Arrow FWD, MWD, RWD Shock Spring Replacement Figure, Battery Mount Bracket Base Frame, Flat Washer, Shock Locknut
Page 72 Page 74

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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