Table of contents: Wheel balancing ↓ Execution order ↓
If a wheel that is in good condition and balanced on the vehicle is to be remounted, for example after a brake test, it must be bolted to the wheel hub in the same position as before. To do this, mark the mounting position of the rim and hub (arrows) as shown here.
Wheel imbalance is felt by vibration in the steering wheel and shaking in the front of the car. This is especially noticeable at certain speeds. The reason is the uneven distribution of weight on the wheel.
Wheel balancing
Wheels must be statically and dynamically balanced. There are two methods for this:
Execution order
1. The car wheel is removed and placed on a balancing machine. There it is rotated for testing. This provides information about the imbalance, which is leveled by adding lead weights.
2. Precise balancing is required to eliminate residual imbalance. This involves equalizing the imbalance of the wheel hub and brake disc. The wheels on the machine are driven to rotate at the required speed using an electric motor with a friction disc, and thus information about the residual imbalance is obtained. It is equalized again using lead weights.
3. For accurate wheel balancing of the Audi A4, all four wheels of the car must be raised.
4. Due to the lack of their own drive, the rear wheels in the front-wheel drive Audi are driven by an electric motor with a friction wheel during dynamic balancing.
This article was previously published on the resource: AUDIMANUAL.RU