Rear calibers or wheel cylinders are sticking. This is most often due to brake fluid that is contaminated with moisture. This moisture will cause internal parts to rust. Replace the rear calibers/wheel cylinders and replace the brake fluid with fresh fluid from an unopened can. It can also be a defective proportioning valve.
On most cars the handbrake is applied to the rear wheels only. The footbrake applies to both the front and back brakes, with a bais to the front to help avoid the rear wheels locking up under heavy braking.
Braking
The rear brakes will lock when there isn't enough weight in the rear of the vehicle, the surface is loose (like a gravel road), or they [the brakes] are applied to heavily. Newer vehicles with anti-lock brake systems (ABS) should not have this problem.
If the rear wheel brakes are locking up on a vehicle they should be thoroughly checked. The master cylinder may need to be replaced on the car.
that nosie is the wheels locking up, this doesnt usually happen in modern cars as they have anti-lock brakes.
At the back behind the wheels??????
Parking brakes apply generally on rear wheels to control enough sliding of the vehicle.
its your worning clip time to change your brake pads drive safe
brakes on all 4 wheels
A 1991 mercury topaz has drum brakes on the rear wheels.
The problem with the rear brakes locking up may be the self adjusting screws themselves. They should only tighten when reversing the car and hitting the brakes, putting the pressure on the drums in back instead of the rotors in front.
They aren't, however if they are locking on your 106 then the 1st thing to do is to check your tyre's have plenty of tread, and that they are good quality tyres.If the car has ABS there is a bigger problem.If its the rear locking up before the front it may be due to the brake bias valve needing adjusting.Of course your brakes will lock on ice or other slippery surfaces, so dont brake hard and gradually increase the braking force.------------------------------------------------------------------------------------Having too much pressure (air) in your tyres can also be a cause, as there will be less of the tyre in contact with the road.If the brakes are locking when the car has been parked for a while, it is usually the rear brakes sticking. This can be resolved by rocking it backwards and forwards, either manually or by using first and reverse gears.I have also known the friction linings to come off the the rear brake shoes and jam/lock the rear wheels. This requires the rear wheels and brake drums to be removed and new brake shoes fitted.