4-5
Z Series Owners Manual
OM_Z_1212RevC
CHAPTER 4: BACKRESTS And PUSH HAndLES
backrest posts with the holes in the backrest.
4. Make sure both backrest posts are at the same height in the backrest and reinsert and securely tighten the two
Allen screws.
5. Reinstall the backrest pad and adjust the upholstery to the desired tautness. See “Velcro
®
-Style Adjustable Back
Upholstery” or “Tension Adjustable by Straps Back Upholstery” on pages 7-1 to 7-3.
Figure 4-8
Adjusting the Backrest Height
Backrest
Integrated Push
Handle (optional)
Allen Screws
Backrest
Post
I
WARNING
The threads on the Allen screws that secure the backrest posts to the backrest have been treated with a Vibra-TITE
®
VC-3, a locking and sealing coating, to reduce the possibility that they will become loose. You should be able to
adjust the backrest height approximately four times without reapplying thread lock to these screws. TiLite requires that
you reapply Vibra-TITE
®
VC-3 after every fourth adjustment.
If you ignore this Warning, your backrest posts could
become loose or disconnected from the wheelchair, and you could fall, tip over or lose control of the wheelchair and
seriously injure yourself or others or damage the wheelchair.
Note: If your backrest is set to 8-½”, 9”, or 9-½” and you need to adjust the backrest height, the following procedure
applies:
1. Remove the backrest upholstery. See “Velcro
®
-Style Adjustable Back Upholstery” or “Tension Adjustable by
Straps Back Upholstery” on pages 7-1 to 7-3.
2. If your backrest is set to 8-½” and if you are setting the backrest at 9” or 9-½”:
a. Remove the backrest from the backrest brackets. See “Replacing the Backrest” on page 4-10.
b. Remove the top end caps. See Figure 4-9.
c. If the backrest is titanium, remove the long end plugs (see Figure 4-9) and install the short end plugs.
If the backrest is aluminum, skip to Step 2.d.
d. Install the backrest sleeve in each backrest tube. See Figure 4-9.
e. Remove the threaded post plugs from the bottom end of the backrest posts (see Figure 4-9) and
insert the backrest posts into the backrest.
f. Align the backrest posts inside the backrest so that the desired hole in the backrest post aligns with
the second lowest hole in the backrest. See Figure 4-10.
g. Secure the backrest posts inside the backrest and the backrest to the bracket using the Allen screws
and locknuts. Note that the Allen screws used to secure the backrest posts inside the backrest will
also serve to secure the backrest to the brackets. See Figure 4-10. See “Replacing the Backrest” on
page 4-10. Proceed to Step 7.
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