Changing The Seat Width/Depth; Replacing The Seat Frame - Invacare Pronto M91 Service Manual

SECTION 4—SEAT

Changing the Seat Width/Depth

NOTE: The seat frame width and depth are not adjustable. A new seat frame must be ordered to
change seat depth and/or width. Refer to Replacing the Seat Frame on page 44.

Replacing the Seat Frame

NOTE: For this procedure, refer to FIGURE 4.7.
1. Remove the front riggings from the seat frame. Refer to Installing/Removing Front
Riggings on page 71.
2. Remove the seat from the wheelchair. Refer to Removing/Installing or Tilting the Seat
Assembly on page 35.
3. Remove the seat pan. Refer to Removing/Installing the Seat Pan on page 43.
4. Remove the four mounting screws and locknuts securing the seat frame to the seat
frame adapter.
5. Remove the seat frame from the seat frame adapter.
6. Discard the existing seat frame.
7. Align the four mounting holes of the new seat frame with the correct mounting
position on the seat frame adapter (Detail "A" of FIGURE 4.7).
8. Using four existing mounting screws and four new locknuts, secure the seat frame to
the seat frame adapter.
9. Install the seat pan. Refer to Removing/Installing the Seat Pan on page 43.
10. Install the seat onto the wheelchair. Refer to Removing/Installing the Seat Assembly
without Powered Seating Systems on page 35.
Mounting Screws
Seat
Frame
Adapter
Locknuts
®
Pronto M91™and M94™
Mounting Screws
Seat
Frame
21 and 22 Inches
21 and 22 Inches
Locknuts
FIGURE 4.7 Replacing the Seat Frame
44
DETAIL "A" - SEAT FRAME MOUNTING
POSITIONS
16 Inches
17 Inches
Front of Seat Frame
18 Inches
19 Inches
20 Inches
16 Inches
17 Inches Rear of Seat Frame
18 Inches
19 Inches
20 Inches
NOTE: Measurements given according to
seat frame depth.
Adapter
Adapter
Part No. 1125038