Steering Rack Centering; Suspension; Front Camber And Toe Adjustments - Seat Leon Cup Racer TCR 2016 User Manual

4.2

Steering rack centering

As the steering rack is electric, the steering angle sensor has to be electronically aligned with the wheels
at the aligning time.
How to proceed to align the steering angle sensor:
It is necessary fix the steering wheel. To do it, you can use straps fixed between the roll cage and the
steering wheel or other kind of standard tools.
The use of a rack centring stopper tool is not recommended because it is difficult to get the steering angle
sensor at 0 deg. The most important is to obtain the toe alignment with the sensor at 0 deg.
Proceed as following:

Switch on main and ignition switches.

Turn left and right to get the steer angle signal
initialized.

Fix the steering wheel when the steer angle is 0 deg.

Switch off the ignition and main.

Proceed now with the alignment jobs.
Note:

With this process the steering angle signal will be 0 deg with the wheels aligned. This is very
important for the steering assistance and for the electronic slip differential behaviour.
4.3

Suspension

Wheel ratio
Bilstein damper travel
4.4

Front camber and toe adjustments

The front suspension is very special on this car due its kinematic characteristics. To reach the front
suspension set-up value is recommended to proceed as following:
1. Car ride height: put the ride height at your choice through damper/spring adjustments.
2. Camber: to change the camber is recommended to move the steering rack arm first. The camber
will change quickly.
3. Toe: to change the toe enlarge or reduce the wishbone adjustment.
4. Check: adjust a second time if necessary.
Note:

Although this process seems strange, it is the best and faster way to obtain the camber and toe
adjustments.
Front wishbone adjustment:
Underneath the front wishbone there is a bolt to control the adjustment movement. Unblock the four
screws that are fixing the camber regulator plate and proceed to the adjustment.
Notes:

After any intervention, fix the wishbone regulator plate bolts in the right tighten.

Maintain the wishbone regulation plate clean and little oiled between plates.
Front
1 mm wheel / 0,9 mm damper
110 mm
Rear
1:1
119 mm
26