General information and front suspension design (Peugeot 307)

The suspension is the link between the body and the wheels. Through it, the forces acting on the wheels are transmitted to the body. The suspension serves to reduce dynamic loads, reduce body vibrations, mitigate wheel impacts on uneven roads, and ensure the stability and smoothness of the car. The possibility of body movements and the reduction of angular oscillations around the longitudinal and transverse axes of the vehicle depend on the geometry of the suspension and its rigidity.

The front suspension is McPherson type independent. It is characterized by compactness, low weight and greater installation height, and by increasing the distance between the supports, structural stresses in the suspension elements are reduced. One of the main advantages of the suspension is its relative insensitivity to mounting tolerances.

The lower arms are connected on one side with the steering knuckles with ball joints, and on the other - through silent blocks with a sub-frame. A caliper and a brake disc with a hub are attached to the steering knuckle.



On fig. 6.1 shows the structural elements of the front suspension.

Attention! It is strictly forbidden to carry out welding and straightening work on the elements of the front suspension. Be sure to replace self-locking nuts, as well as bolts with traces of corrosion.