8-1
ZRA_Aero Z Owner’s Manual
OM_ZRA_Aero Z_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 8-3 to
8-4. 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. See “Angle Adjustable Speedloader Caster Mount” on pages 11-6 to
11-7.
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 Rear Seat Height
Tools Needed:
• 3/16” Allen Wrench
1. Note the original position of the camber tube clamp
relative to the notches on the vertical strut. See Figure
8-1.
2. Remove the two Allen screws (one on each side) and
washers that secure the camber tube clamps to the
vertical struts.
3. Reposition the camber tube clamp to the desired height.
Notches are 3/8” apart.
Note:
Vertical struts come in three sizes, short,
medium and long. If you are not able to achieve the
desired seat height with your existing vertical strut, you
may need to purchase longer or shorter struts.
4. Make sure the identical notches are used in each of the
two vertical struts.
5. Reinstall the two Allen screws (one on each side) and
washers and securely tighten.
6. Check the toe-in/toe-out and adjust as needed, and
square the casters as needed. See pages 8-3 to 8-4.
Figure 8-1
Adjusting the Rear Seat Height
Vertical Strut
Notches
Camber Tube
Clamp
Washer
Allen Screw