Front Axle Toe, Adjusting
Explanation:
When the wheel compresses or rebounds, the wheels toe changes as a function of the compression and rebound travel. The resulting toe measurements are described as the toe curve.
The change in toe constants "S" is adjusted when the vehicle is raised by vertically shifting the toe head → Toe Constant S, Adjusting .
The wheel alignment computer determines the toe constant "S" using values measured in the initial and raised positions. The computer compares the measured values with the specifications and displays them on the screen.
- An incorrectly adjusting toe constant causes vehicle to turn when braking/accelerating or when driving over bumps.
- Due to differing measuring lifts, it may be necessary to raise vehicle at front axle in order to be able to insert the spacer unit V.A.G 1925.
- Insert the spacer V.A.G 1925 with the adapter V.A.G 1925/1 and loosen both threaded spindles until they just make contact on the front subframe bolts - 1 - of the subframe.
The vehicle must not be raised by doing this!
The vehicle is now in the initial position.
With all suspension versions
In this position, check of whether the present toe-in value of each wheel matches the specification is performed in this position by the alignment program on the alignment computer. If necessary, correct toe-in using tie rod length adjuster.
Setting toe on front axle to start position → Front Axle Toe, Adjusting .
Specified values for wheel alignment → Wheel Alignment Specifications .
The alignment program will display a message only if a correction is necessary.
- Loosen lock nut - B -.
- Adjust toe on left and right-hand wheels at hex - A -.
Be sure that boot is not twisted after turning tie rods.
Twisted boots wear out quickly.
- Tighten lock nut - B - , and check toe-in value again.
After tightening lock nut - B - it is possible that the value deviates slightly.
If the measured toe nevertheless lies within the tolerance, the adjustment is correct.