Brake Proportioning Valve
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The brake proportioning valve is the valve that helps regulate pressure from the front brakes to the rear brakes. This valve is a mechanism that applies less pressure to the rear brakes as opposed to the front brakes. No matter what vehicle you have or drive, your car will need a proportioning valve to help regulate the hydraulic pressure.
The amount of brake force that can be applied to a wheel without locking it depends on the amount of weight on the wheel. More weight means more brake force can be applied. If you have ever slammed on your brakes, you know that an abrupt stop makes your car lean forward. This is because a lot of weight is transferred to the front of the car when you stop. To compound the issue, most vehicles also have their transmissions and engines located in the front of the car that also makes the braking situation worse.
This is where the proportioning valve comes in, it only allows a certain portion of the pressure to the rear wheels, therefore saving the cars balance and preventing wheel / brake lockup.
Commonly Asked Brake Proportioning Valve questions about our OEMSPEC Program
Q. Can I install a different brake proportioning valve than the one made for my car?
A. Although many people “modify” their vehicle in such a manner, we highly discourage anyone from doing this without proper test and development. Your vehicle was designed with those braking proportions in mind, and changing them without proper knowledge or research is highly dangerous. We would not recommend this course of action at all
Q. I don’t know where my proportioning valve is, can I install it myself?
A. Your proportioning valve is usually found on your firewall, and has brake hard lines coming out of it. These lines go to the calipers or a different ABS unit altogether. If you have difficulty finding your brake proportioning valve, try following the brake lines coming from your brakes all the way into your engine. This job is relatively easy if you have a. The box wrench in the size you need to remove the brake lines without stripping them. And b. familiarity removing and bleeding your brake system. If you are not comfortable doing this, or do not have the proper tools, take your vehicle to a local mechanic or dealer for servicing
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