Invacare ARROW MWD - Manual (Page 25)

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1. Find current seat depth in left hand column in the chart.
2. Follow that row to right under seat frame components.
3. Verify and note the components of the current seat depth.
4. Repeat STEPS 1-3 for the desired seat depth.
5. Compare existing components of the current seat depth
and the required components for the desired seat depth.
To adjust the depth of the seat on the wheelchair, use
the following guidelines:
If the current seat depth is and the desired seat depth are
within the 12-15-inch seat depth range, this change can be
accomplished by repositioning the back canes on the CJ
back brackets. Refer to CHANGING SEAT DEPTH BE-
TWEEN 12-15-INCHES in this procedure of the manual.
If the desired change only requires a NEW seat pan, refer to
REMOVING/INSTALLING SEAT PAN in this procedure of
the manual.
If the desired change requires the removal/installation of CJ
back brackets, refer to REMOVING/INSTALLING CJ BACK
BRACKETS in PROCEDURE 8 of this manual.
If the desired change requires a new side frame, and/or new
center frame, perform the following steps:
A. Perform the instructions outlined in SEAT FRAME
REMOVING/INSTALLING PREPARATIONS FOR
STANDARD FRAME, ADJUSTABLE FRAME, AND
CAPTAINS VAN SEAT in this procedure of the
manual.
NOTE: Note the mounting hole position of the side
frame for proper installation of the NEW side frame.
B. Remove the two (2) mounting screws, coved wash-
ers, spacers, and locknuts that secure the side frame
to the center frame.
C. Remove the side frame from the center frame.
D. Repeat STEPS A and B for opposite side frame.
If the desired seat depth requires a new center
frame, determined in STEPS 1-5 perform STEPS
E - G, otherwise proceed to STEP H.
E. Remove the four (4) mounting screws that secure
the EXISTING center frame to support brackets.
F. Remove existing center frame from seat mount
plates.
G. Secure NEW center frame to support brackets with
the existing four (4) mounting screws and locknuts.
Torque to 156-inch pounds.
H. Secure NEW side frame to the center frame at the
position noted previously. Torque to 75-inch pounds.
NOTE: If seat width adjustment is also desired, re-
fer to CHANGING SEAT WIDTH in this procedure
of the manual for mounting hole locations and allow-
able seat width/seat depth combinations.
FIGURE 3- CHANGING SEAT DEPTH - ADJUSTABLE
SEAT FRAME
Side Frame
Side
Frame
Center
Frame
Mounting
Screws
(Torque to 75-
inch pounds)
Coved
Washers
Spacers
Locknuts
Mounting Screws
(Torque to 156-
inch pounds)
Support Brackets
Changing Seat Depth Between 12 and 15-
Inches (FIGURE 4)
NOTE: There are two (2) sizes of CJ back brackets. Refer
to the following chart to determine if the seat depth required
is obtainable by repositioning the back canes only, or if the
CJ back brackets must be replaced.
CJ BACK BRACKET (SEAT DEPTH) RANGES
12 and 13-inches OR 14 and 15-inches
If seat depth required is within seat depth range of
the original CJ back brackets, only the back canes
need to be repositioned. Refer to the following pro-
cedure.
If the seat depth required is NOT within the seat depth
range of the original CJ back brackets, the CJ back
brackets must be replaced before repositioning the
back canes. Refer to REMOVING/INSTALLING CJ
BACK BRACKETS in PROCEDURE 8 of this manual.
S
E
A
T
F
R
A
M
E
PROCEDURE 6 SEAT FRAME