front brakes lock up
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New User
Joined: Feb 2008
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front brakes lock up
I have a 1980 ford f250 4x4 that someone has put a 1968 body on. When I bought the truck it stopped but the brake pedal was soft and went to the floor. I replaced the power brake booster with a new one for a 1968 b/c the 1980 would not mount up. A new 1980 master cylinder. New back brake drums, shoes, adjusters, wheel cylinders, springs and cables. New front pads and rotors. This did nothing so I replaced the front calipers and rubber brake hoses. Now when I drive the truck the front brakes start to lock up after driving a few miles until they are completly locked and I have to open the bleeders to relieve pressure. I was thinking this could be an out of adjustment brake booster push rod or the brake prop./combo. valve. Any ideas would be greatly appreciated.
Postmaster
Joined: Feb 2008
Posts: 2,658
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From: Out of here
Yes, your rod is too long and is putting constant pressure on the front brakes.
I had an old Pontiac that did the same thing after replacing the master cylinder with another one that I had laying around.
I smelled something funny one night, got out to look and my front brake rotors were GLOWING red hot!
Make sure that there is a little play between the rod and the back of the master cylinder once you get it adjusted.
I had an old Pontiac that did the same thing after replacing the master cylinder with another one that I had laying around.
I smelled something funny one night, got out to look and my front brake rotors were GLOWING red hot!
Make sure that there is a little play between the rod and the back of the master cylinder once you get it adjusted.
