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Diagnosing the demand perpetrator can seem impossible to those who aren ’ t ace in the ways of a machinist. Don ’ triiodothyronine worry, The Drive ’ s information team is hera to help. Let ’ s figure it out and fix it !
A rotor and adjust of brake pads .
Why Does Your Car Shake When You Brake?
Unless you ’ re gifted with the ability to diagnose a cable car instantaneously like a Formula 1 engineer, you ’ ll likely want to diagnose the trouble by serve of elimination. By doing so, you can eliminate a host of likely suspects. however, evening compiling a number can be daunting. That ’ south why The Drive ’ s editors put together this short list of the most common reasons why your cable car shakes when you brake .
Warped Brake Rotors
In a car ’ mho braking system, a brake caliper applies pressure to a bracken pad which clamps down on a brake rotor. Warped brake rotors occur when the caliper and slog are applied to the rotor in uneven blackmail or when the rotor becomes thus hot that the alloy become distorted. When you brake on a warped rotor, the car will shake, as the metallic element is no longer directly .
Stuck Brake Caliper
Either perplex clamping the rotor or open and not clamping the rotor at all, a stand by bracken caliper can produce shaking when you apply the brakes as you ’ re applying odd press to the rotors .
Air Trapped In the Brake Lines
If atmosphere gets into a bracken channel, it can produce odd pressure across the brake calipers and pads, which could make the car wag when you apply the brakes .
Worn Brake Pads
Your average brake pad is engineered to last about 50,000 miles, though drive styles, use, and environmental factors affect their longevity. Hard stops, sharp shot, and ailing modulated left-foot brake can affect your brake pads ’ health. other variables include defective brake calipers, the air in your hydraulic brake lines, or leaving your car sitting for more than a year. As such, a wear brake pad, or a pad that wore asymmetrically, could produce a pulsate feeling and cause the front of your car to shake when you apply the brakes .
Out-of-Round Drum Brakes
When the drums on older vehicles are out-of-round, or unevenly break, applying the brakes can cause vibrations to come through the guide wheel .
The roulette wheel removed and the brakes accessible .
How To Replace Brake Rotors and Brake Pads
If your odd brake pads and/or rotors leave you feeling tumble dried, it ’ randomness time for a substitution. Let ’ s do this.
Brake Change Safety
Working on your cable car can be dangerous and messy, sol here ’ sulfur precisely what you ’ ll need to ensure you don ’ deoxythymidine monophosphate die, have maimed, or lose a feel and keep your jeans, shirt, and skin spotless—hopefully .
- Mechanic gloves
- Safety glasses
- A long-sleeve shirt you don’t care about (things will get messy).
A brake rotor .
What You’ll Need To Replace Brake Rotors and Brake Pads
We ’ rhenium not psychic, nor are we snooping through your toolbox or garage, so here ’ randomness precisely what you ’ ll need to get the job done .
- Jack stands
- Wheel chock
- Lug nut wrench
- A selection of wrenches
- Large face clamp pliers
- Brake pads
- Brake rotors
- Brake lubricant
Organizing your tools and gear indeed everything is easily approachable will save cute minutes waiting for your handy-dandy child or four-legged benefactor to bring you the emery paper or blowtorch. ( You wo n’t need a blowtorch for this job. Please don ’ t have your kid hand you a blowtorch—Ed. ) You ’ ll besides need a compressed workspace, such as a garage floor, driveway, or street parking. Check your local anesthetic laws to make certain you ’ re not violating any codes when using the street because we aren ’ t getting your depend on out of the slammer or paying any fines. Let ’ s do this .
- Loosen the lug nuts on the front two wheels.
- For better clearance, lift up the front end of your vehicle.
- Place jack stands on the frame at the front of the car.
- Remove the first wheel.
- Locate the brake caliper’s mounting bolts. They’ll be on the rear of the caliper.
- Remove the mounting bolts.
- Remove the anti-rattle clip by prying it off with a flathead screwdriver. It may fly off, so be careful.
- You can now slide the caliper off the rotor. Rest the caliper on the top rotor so it’s not hanging by the brake line.
- The caliper’s mounting bracket will stay in place.
- Remove the brake rotor.
- Remove the brake pads.
- The brake caliper piston, the piece that pushes the brake pad into the rotor, may be extended. Using the face clamp pliers, put one side of the plier’s grip on the piston, and the other side on the caliper’s steel backing.
- Press the piston into the caliper until it sits flush. Go slow, and be sure not to damage the piston’s rubber.
- Take the inboard brake pad, the one with a retaining clip on its backing, and place a small amount of brake pad lubricant on the back of it.
- Press into the piston’s opening until it locks in place.
- Take the outboard brake pad and place a small amount of brake pad lubricant on the back of it.
- Insert the new brake rotor.
- Rest the outboard brake pad on the caliper mounting bracket that’s still attached to the rotor.
- Slide the caliper with the onboard brake pad attached back onto the mounting bracket with the outboard brake caliper.
- Lubricate the caliper’s mounting bolts, but not the threads, and reinstall them.
- Reattach the anti-rattle clip.
- Repeat the steps for the other wheels.
- Reattach the wheels and hand-tighten the lug nuts.
- Raise the jack enough to remove jack stands.
- Lower the vehicle.
- Torque the lug nuts to their manufacturer’s designated specification.
- Pop the car’s hood and remove the brake fluid cap.
- Pump brakes to make sure braking pressure returned and air is out of the system
You ’ re all done !
BMW brakes seen through its aftermarket wheel .
Get Help With Brake Issues From a Mechanic On JustAnswer
The Drive recognizes that while our guides are detailed and easily followed, a hoary gobble, an engine part not in the right position, or oil leak everywhere can derail a project. That ’ s why we ’ ve partnered with JustAnswer, which connects you to certified mechanics around the ball, to get you through even the toughest jobs. so if you have a question or are stuck, snap hera and talk to a mechanic near you .
FAQs About Shaking While Braking
You ’ ve got questions, The Drive has answers .
Q. Can A Bad Ball Joint Cause Shaking When Braking?
A. Yes, it can. A bad ball joint would cause rebuff vibrations, particularly if you ’ ra brake from high speeds. however, the effect wouldn ’ thymine be adenine obtrusive as the more common brake issues detailed above. If you feel a dense vibration, you ’ re likely not dealing with a badly ball joint.
Q. Can Wheel Alignment Cause Vibration When Braking?
A. Yes, it can ! If done improperly, a bad wheel alignment can cause vibrations when braking as the tires aren ’ t inline with one another. This will cause the car to not only be precarious but besides wear out unevenly. additionally, raw tires that aren ’ metric ton balanced by rights can besides cause steering vibrations angstrom well as uneven wear. But unlike the brake issues above, you ’ ll feel both poor alliance or unbalanced tires all the time, not just under braking .
Q. Is Brake Shudder Dangerous?
A. It can be. Brake shiver could mean you don ’ t have equal or adequate brake pressure and might affect your stopping distance .