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Checking radial and lateral run-out of wheels and tyres with wheel balancing machine centring systemVAS 5271 > < Radial and lateral run-out on wheels and tyres

A4 Mk1

Checking radial and lateral run-out of wheels and tyres on V.A.G 1435
Checking radial and lateral run-out of wheels and tyres on V.A.G 1435
Checking lateral run-out:
–  Preload dial gauge about 2 mm.
–  Apply dial gauge to sidewall of the tyre as shown in illustration.
–  Slowly rotate the wheel.
   
–  Note the smallest and the largest dial readings.
  Note
If the difference is greater than 1.3 mm, the lateral run-out is too great.
In this case, you can reduce lateral run-out by match mounting the tyre → Chapter.
You can disregard extreme readings on the dial gauge which are due to small irregularities in the rubber.
Checking radial run-out:
–  Preload dial gauge about 2 mm.
–  Apply dial gauge to running surface of the tyre as shown in illustration.
–  Slowly rotate the wheel.
  N44-0232
–  Note the smallest and the largest dial readings.
  Note
If the difference is greater than 1 mm, the radial run-out is too great.
In this case, you can reduce radial run-out by match mounting the tyre → Chapter.
  N44-0233

Checking radial and lateral run-out of wheels and tyres with wheel balancing machine centring systemVAS 5271 > < Radial and lateral run-out on wheels and tyres