Procedure 8 - Back Frame; Replacing Cj Back Brackets - Invacare Storm Series Service Manual

BACK FRAME
This Procedure includes the following:
Removing/Installing CJ Back Brackets
Changing Back Height
Back Angle Adjustment
WARNING
After ANY adjustments, repair or service
and BEFORE use, make sure that all attach-
ing hardware is tightened securely - oth-
erwise injury or damage may result.
NOTE: The procedures in this section of the manual refer
to NON-RECLINER seat frames only. For recliner seat
frames, refer to PROCEDURE 14 of this manual.
REMOVING/INSTALLING CJ BACK
BRACKETS (FIGURE 1)
NOTE: The following procedure is for Jr. wheelchairs only.
NOTE: This procedure is to be performed in conjunction with
a starting procedure except when replacement of CJ back
brackets is desired.
Removing CJ Back Brackets
1. If necessary, perform the instructions outlined in PREPA-
RATIONS FOR REMOVING/INSTALLING SEAT
FRAME (STANDARD FRAME, ADJUSTABLE FRAME,
AND CAPTAINS VAN SEAT) in PROCEDURE 6 of this
manual.
2. Remove the locknuts and washers that secure the CJ
back bracket to the back angle plate.
3. Remove the mounting screw and locknut that secures
the quick release pin and CJ back bracket and seat po-
sitioning strap to the seat frame.
4. Remove the existing CJ back bracket.
5. Repeat STEPS 2-4 for the opposite CJ back bracket.
6. Perform one (1) of the following:
A. For replacement of CJ back brackets, proceed to
REMOVING/INSTALLING CJ BACK BRACKETS
in this procedure of the manual.
B. For all other seat frame changes, refer back to the
starting procedure to complete the desired change.
Installing CJ Back Brackets
1. If necessary, perform the instructions outlined in PREPA-
RATIONS FOR REMOVING/INSTALLING SEAT
FRAME (STANDARD FRAME, ADJUSTABLE FRAME,
AND CAPTAINS VAN SEAT) in PROCEDURE 6 of this
manual.
2. Install the threaded studs of the CJ back bracket through
the back angle plates as shown in FIGURE 1.
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37
NOTE: Ensure the CJ back bracket is mounted in the front
holes of the back angle plates as shown in DETAIL “A”.
WARNING
Always wear your seat positioning strap.
3. Position the seat positioning strap and quick release pin
under the CJ back bracket.
4. Secure the quick release pin, seat positioning strap, and
CJ back bracket to the seat frame. Torque to 75-inch
pounds.
5. Install washers and locknuts onto the threaded studs of
the CJ back bracket. Torque to 75-inch pounds.
6. Perform one (1) of the following:
A. For replacing CJ back brackets only, perform the
instructions outlined in PREPARATIONS FOR RE-
MOVING/INSTALLING SEAT FRAME (STANDARD
FRAME, ADJUSTABLE FRAME, AND CAPTAINS
VAN SEAT) in PROCEDURE 6 of this manual.
B. For all other seat frame changes, refer back to the
starting procedure to complete the desired change.
CJ Bracket
mounts in
Front Holes on
Back Angle
Plates.
Toward Front of
Wheelchair
Mounting
Back
Screw
Angle
Threaded
Plate
Studs
Washers
Locknuts
Seat
Pan
FIGURE 1 - REMOVING/INSTALLING CJ BACK
BRACKETS
PROCEDURE 8
DETAIL "A"
Seat
CJ Back
Positioning
Bracket
Strap
Quick
Release
Pin
Locknut
Seat Frame
B
A
C
K
F
R
A
M
E