How do you reset the proportioning valve?
How to Reset a Brake Proportioning Valve
- Locate the brake proportioning valve near the rear brake line. It will have one or two buttons located on it.
- Push the reset button located on the valve with your fingers, which will reset it so the valve is working properly again. Inspect the brake pressure.
Does the proportioning valve controls pressure to the front brakes?
The proportioning valve reduces the pressure to the rear brakes. Whichever type of brakes your vehicle has, the rear brakes require less pressure than the front brakes.
Are proportioning valves load sensitive?
The load sensing proportioning valve is located in the brake system for the rear wheels. It functions to control the brake fluid pressure from the master cylinder in response to the vehicle load and prevents early locking of the rear wheels. A load sensing valve is found on a braking system of a car or a truck.
How does a proportioning valve equalize braking action?
The proportioning valve reduces the pressure to the rear brakes. If equal braking force were applied to all four wheels during a stop, the rear wheels would lock-up before the front wheels. The proportioning valve only lets a portion of the amount of pressure to the rear wheels thus preventing rear wheel lock-up.
How does the load sensing valve work?
A load sensing valve is found on a braking system of a car or a truck. It detects ,by way of a connecting rod; the weight or downward movement of a vehicle caused by a heavy load and allows more brake fluid/air/pressure to be applied to the rear brakes. As a vehicle moves forward, the front brakes do most of the work.
How does a proportioning valve work?
A proportioning valve is a valve that relies on the statics to supply a reduced pressure to an output line. A simple example is where spring load applies a reducing force so that the output pressure is reduced. Proportioning valves are frequently used in cars to reduce the brake fluid pressure to the rear brakes.
How exactly does a brake proportioning valve work?
An adjustable proportioning valve changes the front to rear brake balance by reducing the hydraulic line pressure to the rear brakes, whenever the inlet pressure is above the breakpoint pressure set by the valve adjustment. Below the breakpoint pressure, the rear line pressure will always be the same as the front pressure.