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Vibration control systemVAS 6230 A > < Work sequence when balancing wheels and tyres

A4 Mk3

Finish balancer
Finish balancer
  Caution
Position vehicle on the sensor platforms (front wheels only on front-wheel drive vehicle, all four wheels on four-wheel drive vehicle) in order to balance the wheels.
  Note
Before working with a finish balancer the mechanic needs to have been instructed by the manufacturer of the balancer.
If you determine a residual imbalance greater than 20 grams when balancing the wheels, you should rotate the mounting position of the wheel on the hub.
  Note
t  On rims with bonded wheel trims, take care not to scratch the wheel trims.
t  Wheel trims have a very sensitive surface.
t  If a wheel trim is damaged, the rim must be renewed.
   
t  The wheel trim cannot be renewed.
–  Mark the point at which the imbalance is indicated.
  Caution
Bond on the balancing weights so that they do not touch the brake caliper or parts of the suspension.
–  Unbolt the wheel and rotate its position on the hub so that the marking points downwards.
  Note
Important! The hub must not rotate during this procedure.
–  First hand-tighten the lowest wheel bolt to about 30 Nm.
–  Then tighten the remaining wheel bolts to about 30 Nm (in diagonal sequence). This process makes sure the wheel is centred properly on the hub.
–  Check that the imbalance is less than 20 grams using the finish balancer.
  Note
The imbalance should always be less than 20 grams before you change the balance weight.
–  If necessary, remove the wheel bolts again.
–  Rotate the wheel relative to the hub once more, turning it one or two wheel bolt holes further.
–  Tighten the wheel bolts using the method described above.
  Note
Do not try to reduce the imbalance using balance weights until the imbalance is less than 20 grams.
–  Balance the wheels until the imbalance is less than 5 grams.
–  Tighten wheel bolts to specified torque setting if you have not already done so.
–  Always tighten wheel bolts to specified torque using a torque wrench!
  A44-10265

Vibration control systemVAS 6230 A > < Work sequence when balancing wheels and tyres