So I replaced my master cylinder, wheel cylinders, all the shoes and had the rotors turned on my 48' dodge deluxe and still the brake pedal gets hard as a rock after driving it a bit and the brakes stay engaged eventually popping a wheel cylinder. If anybody has any ideas to what the problem is or how I can fix it I would greatly appreciate it.
Brake pedal is not returning far enough to allow pressure to be relived, in to the reservoir. There is a bleed hole in the piston, when retracted far enough bleeds of line pressure. Is there free play in the pedal when brakes are stuck on ?
After i bleed the brakes the function properly for a bit then the pedal slowly gets harder.as the pedal gets harder the brakes start staying applied
As said to long adjustment on the MC pushrod,also you NEED a return spring on the brake pedal. Do not rely on the spring inside the MC to return the pedal. Just about has to be one or the other here.
Shoes? rotors? You have disc front, drum rear? Just trying to understand your set-up to grasp your problem...
Stock brake system? How old are the 3 brake hoses? They can deteriorate internally acting like a check valve...Brake lines routed at least 3-4" away from exhaust...
I agree with rustyangels, JohnEvans, and Kennkat, Fluid not returning to the Master Cylinder. Follow their suggestions.
No matter what ! Refer, back two post's #2 and #4 and #6. No BS, I had the same thing happen to me on the Divco. Easy fix as I made my push rod adjustable.
There should be some adjustment on the pushrod. Try shortening it a little. When the pedal gets hard, is it after pumping or does it get hard on its own?
The Jalopy Journal
