Car And Truck Brake Parts

Brake Piston

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Brake Piston
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Parts of a car's braking system are designed to wear down and as this happens, they will lose their effectiveness. How often should a car's braking system be inspected? It is recommended that you have the major components of the brake system be inspected once a year or about every 10,000 miles. How often you have the brake system inspected depends on things such as how you drive (how you stop in particular), the age of your car, the type of braking system, whether you live on hilly versus flat lands, highway versus city driving, and the type of braking system that you have. Inspecting under the hood Check the level of brake fluid in the master brake cylinder reservoir. Top it off if neccessary. Be sure not to let any kind of dust or dirt enter the reservoir. If you need to add more than 2oz of brake fluid frequently, there may be a leak somewhere in the brake system. The brake fluid should be clear, not dark in any way. If it is, it may be time to have it replaced. Inspecting the Brake System while driving If the brake pedal goes almost to the floor or looses its firmness, there may be a leak somewhere in the braking system or the brake fluid level in the master brake cylinder reservoir has gotten low. A vibrating of pulsating feeling in the brake pedal and/or the steering wheel may be a sign that the brake pads and rotors or brake shoes and drums need to be resurfaced or replaced. A light squealing sound is normal, especially when the car is cold. If you hear a metal to metal sound, have your brakes inspected immediately. Underneath the Car Inspect the metal brake lines that run the length of the car and also the rubber hoses that deliver the brake fluid to the brake calipers and make sure that the lines and hoses are not damaged in any way and also that they are free of any moving or heat producing parts. Inspecting Disc Brakes On disc brake systems, the parts that are designed to wear down are:

o brake pads

o rotors, also called discs

o calipers, in particular the piston or pistons inside of them

Inspect the condition of the brake pads and rotors and also check to make sure that the piston inside of the caliper is working properly. Inspect the overall thickness of the brake pads and rotors. Brake pads that show excessesive wear should be replaced. Rotors that have slight wear should be resurfaced or replaced and rotors that show excessesive wear should be replaced. Brake pads and rotors with light scratches can mean that there is a contaminent such as dirt lodged between them. At the very least clean them or have them cleaned with a brake cleaner. Rotors with deep scratches should be replaced with new ones or resurfaced. Inspection of Drum Brakes On drum brake systems, the parts that are designed to wear down are:

o brake shoes

o drums

o wheel cylinders

Remove the drum so that the inside can be inspected. Inspect the inside of the drum for any damage that is done to it. Any brake dust buildup should be removed with a brake cleaner. If there are heavy scratches to the inside of the drum, replace both drums. A wheel cylinder that is defective will leak brake fluid from its sides (where the metal meets the rubber part). warning: when working on the car's braking system, do not inhale any brake dust. It is recommended that you wear a face mask when working on the brakes themselves.

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Gain Maximum Braking Power With the Mazda Brake Caliper

The modern brake system has undergone rigorous refinements for over 100 years and has now become extremely reliable and efficient. In your Mazda, the brake mechanism is one of the most critical devices that greatly influence handling and safety driving. It is responsible for setting your moving vehicle into a stop. It does this by absorbing the kinetic energy of your vehicle and converts it into heat. This is successfully executed with the efficiency of its working parts such as the Mazda brake caliper. This is the assembly that encases the brake pads and pistons. These pistons are normally made of aluminum or chrome-plated iron. Typical caliper design employs a single hydraulically operated piston that goes inside the cylinder. But for high performance brakes, they are equipped with as many as twelve pistons. Modern cars use a different hydraulic circuit that activates the brakes that are located at each wheel. This hydraulic design is more effective as it can multiply the braking force. The number of pistons employed in the caliper is sometimes referred as the number of ‘pots’.

In terms of high performance and responsive braking, having a reliable Mazda brake caliper is a must. It is regarded as the most integral part of the braking system for it is the one that liberally stops your moving vehicle. This is the U-shaped device and is geared with a piston at each sides of the U. The brake pads go along the sides of the U and the brake disc is located inside the brake caliper. As the force is applied to the brake pedal, a high pressure brake fluid from the master cylinder is forced to the brake caliper where it actuates the piston. This in turn pushes the brake caliper and allows it to clamp down firmly on the brake disc. This creates a massive friction, which stops or slows down the wheels from turning. The wheels can spin thousands of RPM and it is the job of the brake caliper to stop it or slow it down. Just imagine that enormous force that the Mazda brake caliper must endure. Most heat created from friction is dispersed via the brake pad along with the brake disc. But among these parts, the brake caliper has to endure most of the stress during braking.

Typically, there are two main types of calipers and these are the floating calipers and the fixed calipers. There are other caliper designs but these two are the most popularly used. Floating calipers are so called as they ‘floats’ or moves in a track mounted in its support. This is necessary in order for them to center itself over the rotor. When brake pressure is applied, the hydraulic fluid pushes in two directions: one it forces the piston to the inner pad, allowing it to push against the rotor and two, it pushes the caliper in the opposite direction so as to make contact with the outer pad. On the other hand, fixed calipers are mounted tightly to the support and they are not allowed to move. Instead, they employ two pistons at each side of the caliper that rub against the pads and the rotor. These types of calipers provide a better brake feel and are more efficient but they are expensive to produce and cost more on service unlike the floating calipers that are least costly to produce.

About the Author

George Wiggins is a business man and also a part-time bartender. He is a car enthusiast and been exploring different kinds of car modifications for the past years.

How can I put the piston back into my brake calpier?

I have a 95 Mustang and the rear calipers are the type that the piston needs to be screwed back in. The piston is too far out of the caliper and when I try to screw it back in, it's not 'catching'. Does it need to be pushed in a certain amount first? It's a new caliper (year old) and I'd hate to buy another new one. Any suggestions?

The best answer is a.... C clamp. I change the brakes on my car all the time and I use a C clamp for the caliper every time. But when your are done and ready to drive your car, be sure to PUMP the brake pedal (until it gets hard) before you start the car. Because what is going to happen is when you squeeze the piston back in you are building pressure in the break line and creating air pockets so by pumping the brake you are releasing those a air pockets.... Good Luck

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