MWD WHEELCHAIRS

PROCEDURE 15

 

 

2.Count the number of exposed threads and repeat this procedure for the opposite shock.

3.Proceed to STEP 9 in HEIGHT ADJUSTMENT OF STABILIZERS in this procedure of the manual.

REMOVING/INSTALLING GEARBOX (FIGURE 12)

CAUTION

Perform the following procedure in a des- ignated work area to prevent damage to flooring (carpeting, tile, etc.).

Removing

1.Remove the drive wheels from the wheelchair. Refer to REMOVING/INSTALLING DRIVE WHEELS in PRO- CEDURE 12 of this manual.

2.Remove the drive wheel hub from the existing gearbox drive shaft. Refer to REMOVING/INSTALLING DRIVE WHEEL HUBS in PROCEDURE 12 of this manual.

NOTE: Note the mounting position of gearbox to the sus- pension arm before gearbox disassembly.

3.Remove the four (4) mounting screws that secure the motor/gearbox to the suspension arm.

4.If necessary, removeexisting motor fromgearbox. Re- fertoREMOVING/INSTALLINGTHEMOTORinPRO- CEDURE 12 of this manual.

5.If necessary, install existing motor onto NEW gearbox. Refer to REMOVING/INSTALLING THE MOTOR in PROCEDURE 12 of this manual.

Installing

WARNING

When reinstalling the gearbox ALWAYS use the mounting holes furthest back on the sus- pension arm. DO NOT reposition the motors.

CAUTION

The FRONT mounting screws that secure the gearbox to the suspension arm MUST be 5/ 16-18 x 2-1/2-inches long and the REAR hex screws that secure the gearbox to the sus- pension arm MUST be 5/16-18 x 1-1/4-inches long. Otherwise damage to the gearbox casting can result.

1.Position the NEW gearbox with the mounting holes fur- thest back on the suspension arm.

2.Whenreassemblingthegearboxtothesuspensionarm, use Loctite 242 and torque mounting screws to 160- inch pounds.

NOTE: Replace any parts that show signs of wear or dam- age.

3.Reinstall the drive wheel hub to the new gearbox drive shaft. Refer to REMOVING/INSTALLING DRIVE WHEEL HUBS in PROCEDURE 12 of this manual.

4.Reinstall the drive wheels onto the wheelchair. Refer to REMOVING/INSTALLING DRIVE WHEELS in PRO- CEDURE 12 of this manual.

5/16-18 x 1-1/4-inch

Mounting Screws

 

5/16-18 x 2-1/2-inch

WARNING

Mounting Screws

 

When reinstalling the gearbox ALWAYS use the mounting holes furthest back on the suspension arm. DO NOT reposi- tion the motors.

Motor

Gearbox

Suspension Arm

FIGURE 12 - REMOVING/INSTALLING GEARBOX

REPLACING SUSPENSION ARM (FIGURE 13)

1.Remove the drive wheels from the wheelchair. Refer to REMOVING/INSTALLING DRIVE WHEELS in PRO- CEDURE 12 of this manual.

2.Perform one (1) of the following:

A.(GROUP 24) - Loosen the mounting screws that secures the wiring harness and the battery sub- frame to the base frame assembly.

B.(GROUP 22) - Loosen the two (2) mounting screws that secures the rear of the battery tray to the sub-frame assembly.

M

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W H E E L C H A I R S

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Invacare Ranger X, Arrow REMOVING/INSTALLING Gearbox Figure, Replacing Suspension ARM Figure, Motor Gearbox Suspension Arm