Why do my rear drum brakes keep locking up?
Why do my rear drum brakes keep locking up?
There is a long list of reasons that one or all of the brakes on your vehicle might lock up. These can include an overheated braking system, using the wrong brake fluid, damaged or broken parts (calipers, brake pads, pistons, rotors, or others), a defective ABS component, broken parking brake, and more.
What happens if your rear brakes lock up?
When brakes lock up, the vehicle may veer sharply to the left or right, and the back end may fishtail causing the driver to lose control [source: Car Talk]. If this happens while you’re driving, pump the brakes consistently until you come to a complete stop, and get the car to a mechanic as soon as possible.
What causes rear drum brakes to grab?
Moisture inside the rear brake drum assemblies can cause the rear drum brakes to grab, or lock when first driving. Inspect the rear brakes, replace the rear shoes as needed, and make any adjustments.
What causes anti lock brakes to lock up?
Brake Issues If you have anti-lock brakes, they should not lock up while you are driving unless there is an underlying problem. Some of the most common underlying issues include faulty brake pads, bad calipers on the disc brakes or faulty cylinders on the drum brakes.
Can ABS cause brakes to lock up?
When it is functioning correctly the ABS system is designed specifically to prevent the wheels from locking up during heavy braking, preventing loss of traction. However, there can be certain instances where a faulty ABS module can behave erratically, causing your brakes to lock up even under normal driving conditions.
How do you release rear drum brakes?
Use a screwdriver to remove the screws securing the brake drum to the wheel. Draw the brake drum forcefully towards you. Use a screwdriver and rubber mallet or a brake drum puller to take the drum off of the wheel if you are unable to remove the drum by unscrewing it and pulling it.
What does it mean when brakes lock up?
Brake “lock-up” can be most simply defined as any situation in which a vehicle’s brakes are applied, but do not release as expected. This is a serious situation, in any event, but can be especially dire when it occurs while driving. In the most serious of cases, a wreck may take place as a result.
What causes brake calipers to not release?
The most common causes of your brakes not releasing is a seized caliper or brake pad. This typically occurs due to rusting or ageing. Typically, you will notice your vehicle pulling to one side when you press down on your brakes.
How do you unlock rear brakes?
Steps to Un-Jam Rear Brakes
- First try rocking car backwards and forwards vigorously in first and reverse gears, if you are lucky you will hear a bang and the brake will release.
- Try rocking car to left and right with hand brake off be sure to chock wheels or leave in gear, as vehicle might suddenly un-jam and roll.
