Thread: Proportioning valve question.

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Originally posted by Daver
Your welcome, Don....

....does anyone know how this proportioning valve works,
or how to adjust it, and the initial setting?
What is the little red thing on top of the valve ?

Daver.

that little red thing looks like a residual pressure valve, that you use if your master cylender is mounted lower than your wheel cylenders and its a one way valve so the fluid cant drain back into your master cylender when you take your foot off of the brake pedal. the proportioning valve is used to balance your front brakes with your rear brakes. i always start to adj. the brake balance in the shop with the wheels off of the ground with someone pressing on the brake pedal untill you get about the same amount of drag on all 4 wheels. you are turning the knob on the proportioning valve to get this bal. when you get the front and rear brakes as close as you can, then take the car outside on some dirt and test the brakes, you wont the front brakes to lock up a little before the rear. turn the knob on the valve until you get the bal. you wont. hope this makes sense, if it dont let me know.

the residual valve might be the problem with your brake padel sticking. there is a 2 lb. valve for disc brakes and a 10 lb valve for drum brakes, see if its stamped on your valve.