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Why Does the Brake Drum Sometimes Stick?

Model: Volvo S70 MK 1 - Years 1996-2000
Part: Brake drums and shoes

In this new experience, we will explain why the brake drum sticks. But first, let's explain how the drum brake works. The brake has a function: to stop the wheel, or the vehicle, it needs the two springs at the centre of the brake to pull a metal plate close to the drum, creating friction to stop the wheel. Therefore, after this explanation, we can understand that if the springs that return the metal plates have worn out, the system will no longer function as it should. In conclusion, we can say that the malfunction is caused by the pump not returning the two springs or by the springs themselves.

Updated on 23 February 2026 by ScegliAuto

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