Adjusting The Rear Seat Height (Tra And Yra); Adjusting The Center Of Gravity (Tra And Yra) - TiLite Rigid TR Series Owner's Manual

Figure 54
Adjusting the Rear Seat Height
(TRA and YRA)
The TRA and YRA chairs have a seven position axle
plate (see Figure 70A) to permit a wide range of
adjustability to the rear seat height.
Tools Needed:
• 3/16" Allen Wrench
• 7/16" Open End Wrench
Figure 55
1. Remove the rear wheels.
2. Remove the camber tube. See "Replacing the
Camber Tube" on page 59.
3. Remove the three Allen Screws that secure the axle
plate to the camber mounts. See Figure 70B.
4. Reposition the axle plate to desired height, making
sure three holes in the axle plate (two outer holes
and one center hole) align with the three holes in
the camber mounts. Note: In position O, it will be
necessary to remove the Allen Screws that secure
the camber tube clamp to the axle plate. See Figure
70C.
5. Reinstall the three Allen Screws that secure the axle
plate to the camber mounts and the frame. Note that
the non-threaded camber mount must be flush
against the axle plate. The threaded camber mount
should be on the opposite side of the frame tube
from the axle plate.
6. Repeat steps 2 through 4 with the axle plate and
camber mounts on the opposite side of the chair.
7. Securely tighten all Allen Screws.
8. Reinstall the camber tube. See "Replacing the
Camber Tube" on page 59.
9. Reinstall the rear wheels.
10. Check the toe-in/toe-out and adjust as needed and
square the front casters as needed.
Note: The camber tube may be mounted either above
or below the frame tube. In most instances, making a
rear seat height adjustment will not require reversing
this configuration. However, if necessary you can
reverse the direction of the camber tube mounts to
switch the position of the camber tube from above the
frame tube to below it or vice versa. See Figure 70D.
Adjusting the Center of Gravity
(TRA and YRA)
Tools Needed:
• 3/16" Allen Wrench
• Ruler
1. Remove the rear wheels.
2. Loosen, but do not remove, the six Allen Screws
(three on each side of the chair) that secure the axle
plates to the camber mounts. See Figure 70B.
58
Figure 55
Figure 56
Figure 55
A.
Figure 56
Available Positions 0 Through 6.
B.
Allen
Screws
Axle
Plate
Camber Tube Clamp
ure 70 ure 70
Available Positions 0 Through 6.
Position 4 Shown.
C.
Axle
Plate
Allen
Screws
Available Positions 0 Through 6.
Position 0 Shown.
D.
Positioning the
Camber Tube Above
Frame Tube.
Figure 70
TRA/YRA Camber Tube and Axle Plate Positions
TiLite ® OM000007 - Rev. B
Align Holes With
Position Holes
Position 6
Position 5
Position 4
Position 3
Position 2
Position 1
Position 0
Camber
Mounts
Figure 56
Camber Mounts
(threaded)
Camber Mounts
(non-threaded)
Camber
Tube Clamp
Figure 56