8-1
ZR Owner’s Manual
OM_ZR_0913RevA
CHAPTER 8: AXLE PLATES AND CAMBER PLUGS
(CENTER OF GRAVITY; REAR SEAT HEIGHT)
All TiLite rigid wheelchairs are equipped with a camber tube. By adjusting the position of the camber tube, you can
adjust the center of gravity of your chair. In some cases, you also can adjust the rear seat height. This chapter
explains the various adjustments that are possible. The same adjustment will apply whether you have an aluminum,
titanium or carbon fiber camber tube and regardless of the degree of camber.
I
WARNING
Any changes to the position of the camber tube will affect the stability of the chair. Use extreme caution when using a
new camber tube position as the new position may make the chair more prone to tip over.
If you ignore this Warning,
your chair may not perform properly, which in turn, may cause you to fall, tip over or lose control of the chair and
seriously injure yourself or others or damage the chair.
I
WARNING
Whenever you adjust the position of the camber tube (either to adjust the rear seat height or the center of gravity), it
may be necessary to adjust the toe-in/toe out of the rear wheels. See “Adjusting Toe-In/Toe-Out” on pages 8-2 and
8-3. In addition, whenever you adjust the position of the camber tube or when you adjust the toe-in/toe-out, it may be
necessary to square the casters to the floor.
If you ignore this Warning, your chair may not perform properly, which,
in turn, may cause you to fall, tip over or lose control of the chair and seriously injure yourself or others or damage the
chair.
Note: It is recommended that you remove the rear wheels and turn the chair upside down before attempting to make
any adjustments described in this chapter.
Standard Camber Mounts
Adjusting the Center of Gravity
I
WARNING
When repositioning the camber clamps on the CG Brackets, always leave as many open holes between the two Allen
screws as your desired placement will permit. NEVER use two adjacent holes to attach the camber clamps to the CG
Brackets.
If you ignore this Warning, your camber clamp may fail, causing you to fall, tip over or lose control of the
chair and seriously injure yourself or others or damage the chair.
Tools Needed:
• 5/32” Allen Wrench
1. Remove the rear wheels.
2. Remove the four Allen screws (two on each side) that
secure the camber clamps to the CG brackets. See
Figure 8-1.
3. Reposition the camber clamps to the desired position
on the CG Brackets, making sure the positioning is
identical on both sides of the chair. You MUST leave
one open hole between the two Allen screws.
4. Reinstall the Allen screws and lock washers and
securely tighten all four Allen screws.
5. Reinstall the rear wheels.
6. Check the toe-in/toe-out and adjust as needed. See
pages 8-2 and 8-3.
Figure 8-1
Adjusting the Center of Gravity
CG Bracket
Camber Clamp
Washers
Allen Screws
Open Hole
(Required)