The Brake Proportioning Valve for Nissan Quest is an essential component that aids minivan during sudden stops. It controls the hydraulic pressure between the front and rear brakes. As a result, it helps prevent the rear wheels from locking up and keeps minivan stable. The valve is mounted next to the master cylinder. The valve links to the anti-lock braking system where it examines the fluid pressure when the brake pedal is applied. During a regular braking situation, fluid flows in a balanced manner. However, under panic braking a build-up of pressure compresses an internal spring which moves the piston to close off the internal passage. This prevents fluid flowing to the rear circuit and allows a higher flow and pressure to the front brakes which are seeing greater weight transfer. The Brake Proportioning Valve allows one set of brakes to engage more than another. In this case, it's the front disc brakes over the rear drum brakes. This helps reduce the chance of skidding. Through the Brake Proportioning Valve, the Quest distributes pressure to the point where it can do good in any hard stop. All Quest drivers benefit from this proportioning effect. By regularly inspecting the Brake Proportioning Valve housing for corrosion which could potentially impede piston movement, this essential part will continue to operate reliably and safeguard operation of the Nissan Quest braking system. The Brake Proportioning Valve is also responsible for maintaining factory-balanced braking on Nissan vehicles, strengthening brake safety across the wider Nissan lineup.
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