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Brake Master Cylinder

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Stopping on a dime is a given when you drive your vehicle. That sinking feeling you get when you push down on your brakes and when the pedal goes all the way to the floor is meant to alarm you. Likely, your brake master cylinder has failed and you will need a new one and fast. You can replace your brake master cylinder yourself and save a heap of money in the process. We supply master cylinders for just about every make and model of car sold and we will sell a master cylinder to you for less. Our prices are so low that we have match or beat pricing. We will not be undersold! All of our master cylinders meet or exceed OEM specifications so that you can be ensured that only the finest parts go into your vehicle. Take a look at our online catalog and shop for the brake master cylinder that is right for your car. Should you need help, we have online assistants standing by or you can call our toll free number and a sales associate will be glad to help you out. We stock only the best parts on the market and we will ship your order out right away.

Buying Guides
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Tips When Buying a Brake Master Cylinder

When you brake, your pedal force gets extended to the vehicle, which in turn, causes it to stop. The brake master cylinder is the one responsible for this mechanism. It converts the force you apply on the brake pedal into hydraulic pressure in a dual braking system. When your master cylinder becomes worn, it is best to replace it immediately.

Flexibility at your hands

In choosing your new master cylinder, it is essential to know what options you have in the market. Master cylinders are usually available individually or sold as a kit.

  • Individual brake master cylinder ? If the brake master cylinder is the only part of your vehicle's brake system that's damaged, then you might want to get an individually sold master cylinder. However, going for this option is a bit risky. During the installation, you might discover other parts to be worn out as well. This only means that you'll have to spend another visit to the auto parts store to get another part, which could have come with the brake master cylinder sold as a kit.
  • Brake master cylinder kit ? As a kit, a brake master cylinder comes with a reservoir and a bleeder kit. If you seek assurance and want to save time and effort in repairing your brake system, then the master cylinder kit is what you're looking for.

Convenience through your preferred cylinder

Different types of brake master cylinders suit different vehicle needs as well. Below is a brief list of the common master cylinder types.

  1. Single cylinder ? most basic type. It starts with the plunger pushing fluid into the slave cylinders. The spring then returns the plunger to its original position. With negative pressure, fluid gets pulled from the reservoir to the cylinder.
  2. Ported tandem cylinder ? has two pistons in one cylinder. It works using the combined effort of the primary and secondary pistons. The primary piston presses on a spring, which is attached to the secondary piston. When the spring gets fully compressed, the secondary piston begins pushing fluid to its own dedicated system. Pressure on both sides is evened out through a reservoir inlet. Releasing the brake pedal allows the pistons to return to their original position.
  3. Portless master cylinder ? This type gives quicker brake release than the standard master cylinder designs. Portless master cylinders use a valve assembly located in the pistons, which opens to balance the [ressure when the brake is released. This enables the master cylinder to work despite the absence of a compensating port. Its key feature is its anti-locking braking systems (ABS), which adjust braking force using rapid pressure modulations.
Repair Guides
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Brake Master Cylinder: How to Replace It

Repairing the brake master cylinder cures two unwanted vehicle malfunctioning ? a leakage and/or a fading pedal. Check for symptoms by examining the firewall for leaks. If your brake pedal goes all the way to the floor when you hit the brakes, then that's a surefire indicator of a broken master cylinder.

Below is a step by step instruction on changing your master cylinder:

Difficulty level: Moderate

Things to be used:

  • Owner's manual
  • Turkey baster or an alternative suction device
  • Brake fluid
  • Line wrenches
  • Phillips screwdriver

Step 1: Open the hood and locate the brake master cylinder. Refer to your car's manual if you're having trouble finding it.

Step 2: Look for the brake fluid reservoir and drain the brake fluid using a turkey baster or another suction device. However, if it's a two-piece master cylinder with a plastic reservoir, just detach the reservoir for reuse on the new master cylinder.

Step 3: Remove the electronic fluid level sensor, below the fluid reservoir, by disengaging and releasing the safety clip.

Step 4: Use line wrenches to disconnect the two brake lines from the brake master cylinder. Remove the two 15mm nuts to unbolt the brake master cylinder from the brake booster.

Step 5: Take the master cylinder out. Attach the bleeder hoses that came with the master cylinder into the holes for the brake lines.

Step 6: Using one hand, hold one end of the bleeder hoses in the reservoir. Refill the reservoir while pushing a Phillips screw driver in and out on the plunger. This ensures that all air is out of the master cylinder and that the fluid flows to all of the ports.

Step 7: Mount the new brake master cylinder in a vice by sliding it on the brake booster studs.

Step 8: Replace and tighten the mounting bolts.

Step 9: Reconnect the brake fluid lines to the brake master cylinder. Return the electronic fluid level sensor to its place.