The proportioning valve is mounted between the fre line master cylinder and the rear wheels. It's designed to adjust the pressure between the front and rear brakes, depending on how hard you're stopping. The shorter the stopping distance, the more of the vehicle's weight is transferred to the front rodes. This will cause the rear wheels to lift and the front wheels to "dive" down. The valve controls how much pressure is applied to each of the braking system's axle sets. In the case of the short stop, it will direct more pressure to the front wheels and less pressure on the rear wheels. The proportioning valve is the key component to a safe, reliable braking system . The instructions below will guide you as how to install a proportioning valve.
Check your owner's manual and familiarize yourself with your car's braking system
Troba el cilindre mestre. Veureu dues línies de fre que surten del cilindre mestre. La vàlvula proporcionadora es troba a la línia més propera al motor.
Traieu la vàlvula antiga tallant-la dels dos costats de la línia. Utilitzeu un tallador de canonades per a aquest pas. Feu lliscar la vàlvula nova al seu lloc, connectant-la amb un segell de fil de canonada. La vàlvula s'ha de col·locar a prop de la unitat de control del sistema de frens anti-bloqueig (ABS).
Make sure the valve isn't touching or rubbing against any brake lines, as this will cause wear and tear, and can endanger the passengers in the car.
Una vegada que la nova vàlvula estigui al seu lloc, sagneu els frens per eliminar l'aire atrapat a la línia.
Afegiu tant líquid de fre nou com sigui necessari per assolir el nivell adequat.
Take the car for a test drive and make sure the brakes are working properly Fes-ho tu.