Installing The Seat Assembly - Invacare Formula PTO Plus Service Manual

SECTION 11—RETROFITTING A SEATING SYSTEM

Installing the Seat Assembly

NOTE: For this procedure, refer to FIGURE 11.11 on page 49.
NOTE: The stationary link attaches to the front and rear seat brackets on TDX wheelchairs and to
the seat posts on M71 and M91 wheelchairs.
1. Align the rear stationary link mounting holes with the rear seat bracket mounting
holes or the rear seat post mounting holes.
2. Secure the rear stationary link to the rear seat brackets or the rear seat posts using the
two locknuts, washers* and shoulder screws. Torque locknuts to 23 ft-lbs ± 20%.
*NOTE: Washers are present only on TDX wheelchairs.
3. Examine the table, Seat Dump Mounting Positions on page 48, to determine the
proper mounting position on the front seat brackets or seat posts for the desired seat
dump.
NOTE: Seat dump is the seat angle relative to the ground when the seating system is not tilted
(upright position). The seat dump can be 0°, 3° or 5°.
LOWER SEAT BRACKET OR
SEAT POST MOUNTING
HOLE
UPPER SEAT BRACKET OR
SEAT POST MOUNTING
HOLE
4. Align the front stationary link mounting holes with the front seat bracket mounting
holes or seat post mounting holes as noted in STEP 3.
5. Secure the front stationary link mounting holes with the front seat bracket mounting
holes or seat post mounting holes using the two cap screws and washers. Torque to 13
ft-lbs ± 20%.
6. Install the side shrouds. Refer to the wheelchair owner's manual.
™
Formula PTO Plus Powered Seating
Seat Dump Mounting Positions
LOWER STATIONARY LINK
MOUNTING HOLE
3° Seat Dump
Stationary
Link
5° Seat Dump
Stationary
Link
48
UPPER STATIONARY LINK
MOUNTING HOLE
0° Seat Dump
Seat
Bracket
or Seat
Stationary
Post
Link
3° Seat Dump
Seat
Bracket
or Seat
Stationary
Post
Link
Seat
Bracket
or Seat
Post
Seat
Bracket
or Seat
Post
Part No 1125031