Procedure 6 - Seat Frame; Adjusting Seat Depth; Adjusting Back Height - Invacare Ranger II Basic Service Manual

SEAT FRAME
This Procedure Includes the Following:

Adjusting Seat Depth

Adjusting Back Height

Changing Back Angle
Replacing Back Canes
NOTE: The instructions in this procedure are for IN-
TEGRATED SLING SEAT wheelchairs ONLY.
WARNING
After ANY adjustments, repair or service
and BEFORE use, make sure that all at-
taching hardware is tightened securely -
otherwise injury or damage may result.
ADJUSTING SEAT DEPTH
(FIGURE 1)
1. Remove the existing seat upholstery from the wheel-
chair. Refer to REPLACING SEAT UPHOLSTERY in
PROCEDURE 5 of the owner's manual, part number
1080722.
NOTE: If adjusting seat depth of the wheelchair, the seat
upholstery MUST be changed as well.
2. Remove the two (2) plug buttons from the ends of the
crossbraces that are towards front of wheelchair.
NOTE: The two (2) plug buttons will be used in the ends of
the seat extensions.
3. Install the two (2) seat extension tubes into the ends on
the crossbraces. Line up the second mounting hole
from the rear of the seat extension tube with the front
mounting hole in the crossbrace.
4. Install the new seat upholstery onto the wheelchair.
Refer to REPLACING SEAT UPHOLSTERY in PRO-
CEDURE 5 of the owner's manual, part number
1080722.
Phillips
Screws
Crossbrace
Seat Extension Tube
FIGURE 1 - ADJUSTING SEAT DEPTH
NOTE: Make sure to line up the mounting holes in the seat
extension tubes with the new seat upholstery.
5. Install plug buttons into ends of the seat extension tubes.
ADJUSTING BACK HEIGHT
(FIGURE 2)
1. Remove the two (2) hex bolts, washers and locknuts
that secure the top half of the back cane to the bottom
half of the back cane.
2. Reposition the back cane to one (1) of five (5) pairs of
height adjustment holes:
Back Height (in inches)
Holes numbered from bottom to top for reference only.
(There are no numbers on the back canes.)
3. Reinstall the two (2) hex bolts that secure the top half of
the back cane to the bottom half of the back cane.
The top and bottom half of the back canes
MUST be tightened securely together BE-
FORE using the wheelchair, otherwise in-
jury or damage may occur. Use Loctite 242
on the hex bolts and torque to 75-inch
pounds.
4. Use Loctite 242 on the hex bolts and torque into the back
canes to 75-inch pounds.
5. While holding the hex bolt, reinstall the locknut and torque
to 75-inch pounds.
6. Repeat STEP 5 for the other hex bolt and locknut.
7. Repeat STEPS 1-6 for the opposite back cane.
H O L E
PAIR #
5
4
Washer
3
2
1
Hex Bolts (Apply
Plug Button
Loctite 242 and torque
to 75-inch pounds)
FIGURE 2 - ADJUSTING BACK HEIGHT
21
HOLE PAIR #
WARNING
PROCEDURE 6
1 2 3 4 5
16 17 18 19 20
Top Half of
Back Cane
Locknuts
Bottom Half
of Back Cane
S
E
A
T
F
R
A
M
E