- Before servicing the vehicle, refer to the Precautions section.
- Using a brake pedal holder, depress the brake pedal past its first one inch of travel and hold it in this position. This will isolate the master cylinder from the brake hydraulic system and will not allow the brake fluid to drain out of the master cylinder reservoir.
- Disconnect the brake tube from the proportioning valve requiring removal.
Unscrew the Proportioning valve from the master cylinder.
- Lubricate the O-ring on the proportioning valve. Make sure the O-ring on the proportioning valve is new.
- Install the proportioning valve in its master cylinder port. Tighten the proportioning valve to a torque of 13 ft. lbs. (17.5 Nm).
- Connect the brake tube to the proportioning valve. Tighten the tube nut to a torque of 13 ft. lbs. (17 Nm).
- Remove the brake pedal holder.
- Bleed the affected brake line. Refer to the brake bleeding procedure in this section.
- Road test the vehicle to ensure proper operation of the brakes.