8-2
ZRA_Aero Z Owner’s Manual
OM_ZRA_Aero Z_0913RevA
CHAPTER 8: AXLE PLATES AND CAMBER PLUGS
(CENTER OF GRAVITY; REAR SEAT HEIGHT)
Adjusting the Center of Gravity
Tools Needed:
• 3/16” Allen Wrench
• Ruler
1. Loosen, but do not remove, the four Allen screws (two on each side of the chair) that secure the camber mount
clamps to the frame. See Figure 8-2.
2. Slide the camber mount clamps forward or rearward along the frame until it is positioned in the desired location.
Use a ruler to ensure the camber mount assemblies on both sides of the chair are the same distance from the
ends of the frame tubes.
3. Securely tighten the four Allen screws.
4. Check the rear seat height and adjust as needed.
5. Check the toe-in/toe-out and adjust as needed and square the casters as needed. See pages 8-3 to 8-4.
Figure 8-2
Adjusting the Center of Gravity
Camber Mount
Clamp
Allen
Screws
Replacing the Camber Tube
Tools Needed:
• 3/16” Allen Wrench
• 5/64” Allen Wrench
• Ruler
1. Remove the rear wheels.
2. Using the 5/64” Allen wrench, remove the camber mount bumper assembly, making note of the order in which the
parts are assembled.
3. Loosen, but do not remove, the Allen screw that secures the camber tube to each camber clamp. See Figure 8-3.
4. Remove the camber tube.
5. Install the new camber tube, making sure the distance from the outside edge of the camber clamp to the end of
the camber tube is identical on each side of the chair.
6. Make sure that the camber plug ats are perpendicular to the ground and that the camber is oriented properly.
7. Securely tighten both Allen screws.
8. Reinstall the bumper assembly.
9. Reinstall the rear wheels.
10. Check the toe-in/toe-out and adjust as needed and square the casters. See pages 8-3 to 8-4.