Gold Lifetime Member
Join Date: Jul 2009
Location: casselberry, fl
Metering/Proportioning valve plunger question!
Mine is a '68 with power front disc brakes.
I had my Metering Valve (or Proportioning Valve depending on what you call it) rebuilt by Brakeboosters.com a couple of years ago. I'm just now getting ready to fill and bleed my restored brake system for the first time.
I know that when you are bleeding the brakes that the plunger on the back of the Metering Valve has to be pushed in in order for fluid to flow to the front brakes. I've read where you can have someone helping you push it in or put a clamp on it.
My question is.....just how much force does it take to push that plunger in??? I tried doing it by hand and it wouldn't move......I put the valve in a vice and gently turned it and the plunger still won't budge. I had wood between the valve and the vise jaws to protect the valve and it started crushing the wood instead of moving the plunger!...….That amount of pressure not moving the plunger hardly jives with someone being able to push it in by hand.
I'm not sure how to precede here. Do these things stick? I'm afraid of putting any more pressure on it for fear of breaking something.....Any thoughts are appreciated?
1968, 327 210 HP, Power Steering, Power Disc Brakes, Custom Interior, 4 Speed, Console, Gauges, Tilt Wheel, Speed Warning, Fiber Optics, 10 Bolt 3.55 Posi Rear end......Owned since 1978.