Adjusting The Seat Width - Invacare Formula PTO Plus Service Manual

SECTION 15—SEAT

Adjusting the Seat Width

ASBA Seats
NOTE: The seat frame must be replaced to change the seat width. Refer to Removing/Installing the
Seat Frame on page 99.
Adjustable ASBA Seats
NOTE: For this procedure, refer to FIGURE 15.8 on page 94.
FRAME SIZE
SMALL
LARGE
NOTE: If adjusting the seat width beyond the range of the existing seat frame, the crossbars must
be replaced.
NOTE: The spreader bar must be replaced for seating systems ordered with the BPO (Back Post
Only) option.
1. BPO Option Only - Remove the spreader bar. Refer to Removing/Installing the
Spreader Bar on page 77.
2. Remove the hex screw and coved washers securing each crossbar to the seat frame.
3. Examine the Seat Width Adjustment Table to determine if the seat width adjustment
is within or beyond the range of the existing seat frame.
4. Perform one of the following:
• Within the Range - Proceed to STEP 5.
• Beyond the Range - Perform the following steps (Detail "A"):
i. Remove the two hex screws securing the crossbars to each side rail.
ii. Remove the crossbars from the side rails.
iii. Insert new crossbars into the side rails.
iv. Position the new crossbars so the mounting hole is facing down and aligned
with the side rail mounting hole.
v. Secure the new crossbars to the side rails using the two hex screws. Torque the
hex screws to 75 in-lbs.
5. Pull/push the side rails (Detail "B") to the desired width shown in the following table.
™
Formula PTO Plus Powered Seating
Seat Width Adjustment Table
92
SEAT WIDTH RANGE
16 - 20 inches in 1-inch increments
20 - 22 inches in 1-inch increments
Part No 1125031