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Brake Master Cylinder

Your brake master cylinder is a hydraulic device that allows you to easily apply force to your brake pads and stop your vehicle. It's basically a one way valve that pushes the hydraulic fluid in your brake lines to your brake calipers. Brake fluid is usually stored in a reservoir or in the master cylinder itself.

When you depress the brake pedal, the rod that connects to the pedal assembly pushes into the master cylinder. The fluid then pushes from the master cylinder into the brake lines and down to your brake calipers. When you let go of the brake pedal, the fluid rushes back to the master cylinder.

You can maintain and check the health of your braking system by regularly checking the fluid levels in your master cylinder reservoir. To check your brake fluid levels, follow these simple steps.

  1. Open your hood
  2. Locate your master cylinder or reservoir
  3. Open the cap of your cylinder or reservoir - Make sure that you don't drop any debris or dirt inside your master cylinder. These contaminants can compromise the seal of your valve, which will cause the master cylinder to fail.
  4. Inspect the lid of your master cylinder or brake reservoir - Check the seal or rubber grommet on the underside of your master cylinder cap. Make sure there's no damage or tears in the gasket. This gasket is crucial to the operation of your brake master cylinder.
  5. Check levels of brake fluid in your brake master cylinder - Fill with the right brake fluid if low.

If the rubber grommets under your brake master cylinder cap are damaged, replace them right away.

 

Because these cups actually descend and seal the brake master cylinder, replace your lid if these gaskets are torn or broken. The lid of your master cylinder prevents any dirt or contamination, and fights off evaporation of your brake fluid.

The brake fluid inside your brake master cylinder should line up to the "FULL" or "MAX" line in your brake fluid reservoir. If it's low, fill with the proper DOT approved brake fluid for your vehicle, if you aren't sure what kind of brake fluid your car takes, check your owners manual.

When you are done filling your brake master cylinder to the fill line, replace the top and seal the container when done. Since brake fluid can evaporate quickly, don't leave the cap open to the elements.

Inspect the area around your brake master cylinder for signs of flaking paint or leaking brake fluid. As brake fluid is very corrosive to paint, a quick glance is usually more than enough to tell you if your brake master cylinder is leaking or not.

Have any questions about your brake master cylinder? Leave them for us below! Looking for more information, How-tos, DIY's or tech tips on brakes, brake pads, brake rotors, brake discs, wheel bearings, master cylinders or brake calipers? Check out some of our latest articles at our blog My Pro Street.

You hear the familiar scraping sounds coming from your front wheels as you depress the brakes, the shudder of your rotors, telling you you need new brakes.

Over time your brake pads will become worn and unusable, and the scraping sounds you hear when pressing on the brakes are from the caliper or the brake pad clips grinding into your rotor.

This guide shows you how to change the brakes in a 1998 Honda Civic EX, and replacing them with Centric units. The part number for the front rotors is Centric 120.40023, for a set of Centric Carbon Alloy rotors

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Depending on your calipers, you may or may not have the plate that many Z32 brake hardlines run to.

This plate makes sure the brake line does not spin or rotate out of the grooves or brake caliper tabs.

The brake caliper is a 12mmx1.25 fitting and you can convert the brake line on your 240SX using a brake adapter fitting.

This fitting comes in many different varieties and through many different manufacturers, we like the Russell 65702, which is a 10mm female -3 AN to banjo straight.

You can then incorporate a Russell 68272 or Aeroquip FCM2945 – -3 male to 10mm x 1.0 inverted flare to go to the front brake.
 
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Today we’ll be showing you the process of removing the replacing the Chevy brakes in front on a 2001 Chevy Silverado.

This vehicle is a HD version with the 6.0 liter engine and we’ll be replacing the front rotors with Centric versions part number 120.66040 and the pads as well, Centric 105.07840.

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