Installing - Invacare Pronto M91 Service Manual

ii. Remove the motor rack from the walking beam.
• Removing the Swing Arm ‐
i. Remove the long shoulder screw and locknut securing the swing arm to the
wheelchair frame.
ii. Remove the swing arm from the wheelchair frame.

Installing

1. Perform one of the following:
• Installing the Stability Lock Assembly ONLY ‐
i. Ensure compression spring is positioned in the middle hole of the motor rack.
ii. Align the motor rack under the walking beam (Detail "A" of FIGURE 9.3).
iii. Using two shoulder screws and one washer, secure the motor rack to the walking
beam.
• Installing the Swing Arm ‐
i. Align swing arm with wheelchair frame.
ii. Insert long shoulder screw through swing arm and wheelchair frame and secure
using a locknut. Securely tighten.
2. Align pivot link front mounting hole with wheelchair frame mounting hole.
3. Using the front mounting screw, two nylon washers, O‐ring, cupped washer and locknut,
secure the pivot link to the wheelchair frame.
4. Using the shoulder screw and locknut, secure the pivot link to the swing arm mounting
hole.
5. Align the pivot rack from the pivot link.
6. Using two mounting screws secure the pivot rack to the pivot link.
7. Using the walking beam mounting screw, washer and nut, secure the walking beam
assembly, torsion spring and spring spacer to the frame.
Use extreme caution when installing the torsion spring onto the lock plate pin -
otherwise, injury may result.
8. Use a screwdriver to pry the torsion spring open (Detail "B" of FIGURE 9.3).
9. Install the lock plate. Release the torsion spring onto the pin on the lock plate (Detail "B"
of FIGURE 9.3).
10. Place the extension spring onto the spring mount on the swing arm.
Use caution when installing the extension spring onto the pivot plate spring mount -
otherwise, injury may result.
Part No. 1125038
SECTION 9—SHROUDS/FRAME
CAUTION
CAUTION
93 ®
Pronto M91™and M94™