Invacare ORBIT Service Manual page 41

CHANGING THE WIDTH
CHANGING THE WIDTH OF THE
BASE FRAME - NON-TILT-IN-
SPACE ORBIT
NOTE: Refer to Procedure 1 - General Guidelines
which include GENERAL and SPECIFIC WARNINGS
concerning wheelchair stability.
Disassembly of the Base Frame
(FIGURES 10 AND 11)
1. If necessary, remove the seat frame from the base
frame. Refer to DISASSEMBLY in PROCEDURE
2 of this manual.
2. Remove the rear wheels. Refer to REMOVING/
INSTALLING THE REAR WHEELS in PROCE-
DURE 7 of the owner's manual, part number
1073955.
3. If so equipped, remove the crossmember of the
foot activate wheel locks. Refer to CHANGING
THE WIDTH OF THE FOOT ACTIVATED
WHEEL LOCKS in this PROCEDURE of the
manual.
4. Remove the mounting screws and locknuts that
secures the lower portion of the non-tilt rods to
the mounting brackets (FIGURE 10).
NOTE: Note the position of the adjustable height pivot
tube to maintain the same seat height. See FIGURE
10 - DETAIL "A" .
5. Remove the mounting screws and locknuts that
secure the seat plate assembly to the base frame
(FIGURE 11).
6. Lift the seat plate assembly off and set aside
(FIGURE 11).
7. Remove the mounting screws, washers, and
locknuts which secures the mounting brackets
to the top front crossmember (FIGURE 11).
NOTE: Note the position of the top front
crossmember for proper reinstallation of the NEW
top front crossmember. FIGURE 10 - DETAIL "A"
shows the relationship between the adjustable
height pivot tubes and the angle of the mounting
bracket. This relationship must be maintained to
keep the seat plate level.
8. Remove the six (6) mounting screws and wash-
ers that secure the three (3) crossmembers to
the base frame (FIGURE 11).
9. Secure the NEW top front crossmember (the
crossmember with the three (3) holes), at the angle
and position noted from above, with two (2) mount-
ing screws and washers. Torque 75-80 inch pounds
(FIGURE 11).
10. Install the remaining two (2) NEW crossmembers
where existing crossmembers were just removed.
Secure with the existing four (4) mounting screws
and washers. Torque 75-80 inch pounds (FIGURE
11).
11. Secure the mounting brackets to the top
crossmember with the existing mounting screws,
washers, and locknuts in the angle determined
from FIGURE 10 - DETAIL "A" (FIGURE 11).
12. Proceed to CHANGING THE WIDTH OF THE
SEAT PLATE ASSEMBLY in this PROCEDURE
of the manual.
41
PROCEDURE 5
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