Removing/Installing The Walking Beam Assembly, Stability Lock Assembly And/Or Swing Arm; Removing - Invacare Pronto M91 Service Manual

SECTION 9—SHROUDS/FRAME
Removing/Installing the Walking Beam Assembly,
Stability Lock Assembly and/or Swing Arm
NOTE: For this procedure, refer to FIGURE 9.3 on page 94.
NOTE: Take note of position and orientation of the stability lock, swing arm and mounting
hardware before removal.

Removing

1. Remove the seat. Refer to Removing/Installing or Tilting the Seat Assembly on
page 35.
2. Remove the batteries. Refer to Installing/Removing the Batteries on page 103.
3. Remove the drive wheel. Refer to Removing/Installing the Drive Wheel on page 84.
4. Remove the side shroud. Refer to Removing/Installing the Shrouds on page 88.
5. Remove the motor. Refer to Removing/Installing the Motor on page 98.
Use caution when removing tension from the extension spring - otherwise, injury
may result.
6. Use a screwdriver to release the extension spring from the spring mount on the swing
arm assembly. Remove the extension spring from the pivot plate and set aside.
Use extreme caution when removing tension from the torsion spring - otherwise,
injury may result.
7. Use a screwdriver to release the end of the torsion spring resting on the pin on the lock
plate.
8. Remove the lock plate. Allow the torsion spring to rest in place.
9. Remove the walking beam mounting screw, washer and nut securing the walking
beam assembly, torsion spring and spring spacer to the frame.
10. Remove the two mounting screws securing the pivot rack to the pivot link.
11. Remove the pivot rack from the pivot link.
12. Remove the front mounting screw, two nylon washers, O‐ring, cupped washer,
locknut securing the pivot link to the wheelchair frame mounting hole (Detail"C" of
FIGURE 9.3).
13. Remove the long shoulder screw and locknut securing the pivot link to the rear frame
mounting hole.
14. Perform one of the following:
• Removing the Stability Lock Assembly Hardware ONLY ‐
i. Remove the two shoulder screws and one washer securing the motor rack to the
walking beam.
®
Pronto M91™and M94™
CAUTION
CAUTION
92
Part No. 1125038