Home CAR GUIDE ENGINE PARTS How to Substitute a Proportioning Valve

How to Substitute a Proportioning Valve

Parts

  • Brake Fluid
  • Proportion Valve Switch

Tools

  • Brake Bleeder Kit
  • Drain Pan

Difficulty

  • Moderate

Steps

Safety Tip:
Safety Tip: Wear safety glasses at all times when working on your car. Wear other private protective equipment (PPE) when required, for example latex gloves or closed toe shoes.

1. Start your car and warm up the engine. Park the car on a flat surface and turn the engine off.

2. Raise the front side of the car using a jack.

3. Safeguard the car with jack stands on both sides for safety before starting any work. Do not be dependent on on the jack to hold the vehicle up while working.

4. Trace the brake proportioning valve.

5. Clean all exteriors of the proportioning valve by using brake cleaner.

6. While an assistant presses and discharges the brake pedal, examine the proportioning valve for leaks.

7. Gain full control to the proportioning valve to take it out from the vehicle.

8. Disengage the wiring harness for the brake fluid warning light switch.

9. Cut off all hard brake lines connected to the valve.

10. Unbolt and take away the proportioning valve from its mount.

11. Put in the new proportioning valve.

12. Find the brake bleeder valve on the right (passenger side) rear brake.

13. Connect a piece of clear plastic tubing over the brake bleeder screw and place the other end into a container with 2 to 3 inches of brake fluid.

14. Have an assistant pump and embrace the brake pedal to build up pressure in the system.

15. Release the bleeder screw. Permit for brake fluid to evacuate through the bleeder screw opening.

16. Constrict or close the bleeder screw.

17. Repeat the bleeding process until there is no more air bubbles approaching out.

18. Replicate steps 12-17 for the rest of the brakes starting with the left rear, right front, and then the left front.

19. Change any components that were removed to gain access to the proportioning valve.

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