'65 tbird brakes locking

[menglehart77]

I have recently purchased a 1965 tbird 2dr hard top. I am having a brake issue that I can't seem to figure out. I am a hands on mechanic - so would like to solve this problem without having to bring it somewhere.
Here is the deal: After driving about a mile the back brakes seem to be applying pressure. Have taken apart, checked for broken springs, bled and put on new master brake cylinder. After the car sits and cools, they release. When pulling rear end apart, passenger side wheel cylinder seemed to be only applying pressure to one side more.
Any ideas?!

Thanks,

Omaha Mike

[simplyconnected]

...and put on new master brake cylinder...

Your brake pedal rod doesn't have enough slack, and the M/C isn't returning all the way.

If you changed shoes, make sure the long ones go towards the back of the car. - Dave

[menglehart77]

Thanks

Thank you for your help! Will try that right now... is there any specific slack in rod or is it to where you feel safe of clearing?

Will post some pics tonight!

[simplyconnected]

The rod needs to come off of the m/c plunger. If you can jiggle the rod, that's enough. Any additional clearance won't improve matters, but you need at least that amount of adjustment.

Pick up any shop manual and read the part about replacing the M/C. Hope this helps. - Dave

[Rigormortor]

Yep, the M/C rod has to come all the way back if it dosent the rubber seal can cover the return port in the M/C and this keeps pressure on the brakes, eventually heating up and locking the brakes.