v12lincoln Posted June 3 Share Posted June 3 Recently my right rear brake locked up stranding me on side of road. i have replace everything from rubber line to shoes and springs. its still locks up and wont release until i bleed pressure off wheel cylinder, drivers side works perfect. do have a 0.002 worn spot on bottom edge of backing plate just on one side that I polished and the emergency cable is lubed and releases fine. Any ideas? Link to comment Share on other sites More sharing options...
TerryB Posted June 3 Share Posted June 3 (edited) Did you remove the wheel cylinder to see if the pistons inside it are free to move smoothly? Edited June 3 by TerryB (see edit history) Link to comment Share on other sites More sharing options...
v12lincoln Posted June 3 Author Share Posted June 3 yes, rebuilt both rear wheel cylinders when i replace the drivers axle last week. have had passenger side apart twice to make sure. the brakes seat properly if I bleed the wheel cylinder. Link to comment Share on other sites More sharing options...
TerryB Posted June 3 Share Posted June 3 If you jack up the rear of the car so the wheels can turn freely and then apply the brakes, does the right rear stick and bind then? Link to comment Share on other sites More sharing options...
TerryB Posted June 3 Share Posted June 3 Thinking out loud here..if you swap brake drums from right to left do get same side sticking? Link to comment Share on other sites More sharing options...
dalef62 Posted June 3 Share Posted June 3 Are you sure you didn't pinch a steel line in removing replacing the rear end? With your description, it shows all the signs of a blockage in the line, and since you replaced the rubber hoses the only thing left would be a pinched steel line. Link to comment Share on other sites More sharing options...
v12lincoln Posted June 3 Author Share Posted June 3 replaced the steel lines with new ones after rear end was installed. Link to comment Share on other sites More sharing options...
v12lincoln Posted June 3 Author Share Posted June 3 car is jacked up on stands and still same problem. have tried swapping hubs but not having problem once pressure is bleed off. Link to comment Share on other sites More sharing options...
v12lincoln Posted June 3 Author Share Posted June 3 I should tell you I swapped it to disk breaks and a dual master cylinder 25 years ago, to many stupid drivers here in california, need the extra stopping power 1 Link to comment Share on other sites More sharing options...
kings32 Posted June 3 Share Posted June 3 C .heck your master cyln make sure both holes are open . Happen to 50 chrysler , a small grain of sand got lodged in small hole .Same problem you are having . Howard 1 Link to comment Share on other sites More sharing options...
TerryB Posted June 3 Share Posted June 3 12 minutes ago, v12lincoln said: I should tell you I swapped it to disk breaks and a dual master cylinder 25 years ago, to many stupid drivers here in california, need the extra stopping power Disk brakes on all 4 wheels? Link to comment Share on other sites More sharing options...
v12lincoln Posted June 3 Author Share Posted June 3 TerryB. I wish, just the front. stops very good when these idiots cut me off to turn right. Need a Ferret APV to drive around here. 1 Link to comment Share on other sites More sharing options...
TerryB Posted June 4 Share Posted June 4 I’m thinking it could be in the wheel cylinder. That’s because your left side is working fine so fluid is getting to it and because you say relieving the pressure in the cylinder by opening the bleeder releases the brakes. Maybe the wheel cylinder piston and rubber are jamming in the bore under the pressure of braking, just like it’s slightly out of round? By removing the pressure in the cylinder the piston can then be pushed back. Then when the brake is applied the whole process starts all over and it is again jammed? Link to comment Share on other sites More sharing options...
dalef62 Posted June 4 Share Posted June 4 Have you checked the return springs on the brakes? Are they installed correctly and are they in good shape?? Link to comment Share on other sites More sharing options...
Oldtech Posted June 4 Share Posted June 4 I'm thinkin like Kings 32. The pinhole in the master cyl. Link to comment Share on other sites More sharing options...
v12lincoln Posted June 4 Author Share Posted June 4 it was a clog in the master cylinder. little piece of something but i got it out and cleaned ready to go in as soon as these 100 degree day go by. thanks guys. 3 1 Link to comment Share on other sites More sharing options...
TerryB Posted June 4 Share Posted June 4 Thanks for the follow up. Again the collective knowledge here helps solve a problem! 2 Link to comment Share on other sites More sharing options...
ramair Posted June 4 Share Posted June 4 5 hours ago, v12lincoln said: it was a clog in the master cylinder. little piece of something but i got it out and cleaned ready to go in as soon as these 100 degree day go by. thanks guys. I to want to commend you for letting us know, so many either forget to post their solution or don’t care. Not only is it thoughtful to do so, it also allows others to search for a solution quickly through old threads 1 1 Link to comment Share on other sites More sharing options...
Recommended Posts
Create an account or sign in to comment
You need to be a member in order to leave a comment
Create an account
Sign up for a new account in our community. It's easy!
Register a new accountSign in
Already have an account? Sign in here.
Sign In Now