How do you adjust the proportioning valve on a Wilwood brake?

The adjusting knob is marked with an arrow indicating the direction required to decrease line pressure to the calipers. The knob rotated all the way out (counter-clockwise) will provide a maximum pressure reduction of 57%. Rotating the know in (clockwise) will incrementally increase line prressure, up to full pressure.

How do you adjust a proportional valve?

The proportioning valve is connected to the rear brakes in this case. Then, adjust the valve one position at a time (lever-type) or rotate the knob counter-clockwise (screw- type) until the proper balance is achieved.

Do I need an adjustable proportioning valve?

High performance brake systems such as those equipped with 4-piston or 6-piston calipers, we always suggest an adjustable proportioning valve. The adjustable valve will allow the driver to increase or decrease the amount of rear braking force so that it can be matched to the front.

How do you bleed a Wilwood proportioning valve?

For fixed mount calipers with two bleed screws on top, bleed the outboard bleed screw first, then bleed the inboard screw. Repeat this procedure until all calipers have been bled, ending with the caliper closest to the master cylinder. Once the system has been bled, the pedal should maintain a consistent, firm feel.

Do I need a proportioning valve for all drum brakes?

When the brakes are operating correctly, the pressure will be the same in both circuits. A Proportioning valve is required on vehicles that have disc brakes on the front wheels and drum brakes on the rear wheels.

How to replace a proportioning valve?

Park your vehicle on a flat,hard surface. Make sure that the transmission is in park (for automatics) or in 1st gear (for manuals).

Place wheel chocks around the tires. In this case,the wheel chocks go around the front tires since the rear of the vehicle will be lifted up.

Raise the vehicle.

Place the jack stands.

Put on safety glasses.

How to install a proportioning valve?

inlet of the proportioning valve. The outlet of the proportioning valve is connected to the line leading to the caliper(s). BulkHead mountIng 1. Select the location for bulkhead mounting the proportioning valve that allows easy access to the adjusting handle (knob). 2. Make sure that the location allows room for the hydraulic lines and access

How to get a proportioning valve unstuck?

Place the vehicle in park,for an automatic transmission,and in neutral for a standard. Apply the emergency brake and lift the hood.

Depress the brake pedal and note if you have a brake light on the dashboard.

Have an assistant sit in the driver’s seat.

What does a proportioning valve do?

What Does a Proportioning Valve Do? The function of a proportioning valve is to supply the proper amount of fluid pressure to the front and rear brakes to make the vehicle stop quickly and safely. If there is not enough fluid pressure to the rear brakes compared to the front, your vehicle will not stop as quickly as it could.