The springs are responsible for cushioning shocks from various bumps on the road. The main function of the mechanism is to distribute the load from the body and frame directly to the chassis of the vehicle. The springs can be rear or front. In their manufacture, plastic or metal sheet is used. The first option is easier, although the movement is softer. The reliability of products directly depends on the manufacturer. An important role is played by the presence of a high-quality spring eye bush. With its help, springs are attached to the body on the left and right.

1. 4 - series
2. 3 - series
3. 3 - series bus
4. P,G,R,T - series
5. K - series
6. F - series bus
7. K - series bus
8. N - series bus
9. 4 - series bus
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The usage of the spring eye bush

The sheets of the assembled spring should be pressed tightly against each other. In case of improper bending, the sheets are deformed almost immediately. If there are no new sheets, the old ones are restored by means of work hardening. Spring eye bushings must be replaced in a timely manner. Otherwise, the seats will wear out. The springs must be installed by connecting to the front bracket with the long end.

So that the rubber bushings do not rotate on the finger and in the spring eye, the seats are cleaned. Then they are washed with gasoline. The FEBI BILSTEIN brand Bush, spring eye must fully adhere to the respective surface. Before installing the rubber sleeve, it is kept in gasoline for a minute, and then pressed in raw form. When the car is already on its wheels, tighten the nuts.