Why are my rear drum brakes squealing? Why are my rear drum brakes squealing?

Your rear drum brakes squeal for a number of reasons. One reason is brake dust that has accumulated in the brake drum. When you apply the brake, the pads inside the drum come in contact with the brake dust, which causes the squealing. Another cause is the absence of contact between the drum and shoe. These 2 parts should come into contact when the brakes are applied and if this does not happen, squealing occurs. The last reason would lack of lubrication. If the drum brake is not properly lubricated, this will cause it to squeal. Since the brake system consists of metal parts, it needs proper lubrication, in order to function properly.

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