1965 brakes locking

[richardengine]

1965 Thunderbird hardtop. What could cause the brakes to Stay locked after a normal stop? Step on the gas and they release what at around 1500 rpm.

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[74 Harley]

You probably need to replace the rubber lines. As they deteriorate they close up inside, you hit the brakes they work, then it takes a while for the fluid to bleed back out.

 

[biddle]

1965 Thunderbird hardtop. What could cause the brakes to Stay locked after a normal stop? Step on the gas and they release what at around 1500 rpm.

When you post to the forum, follow the posting prompt. Your title "1965 Thunderbird hardtop" is not what your post is about. Also, we are an all Ford Thunderbird site so you can omit the make and model of the car.

 

[Frankie the Fink]

Absolutely change the rubber lines; they can appear fine but "hourglass" internally from deterioration.
Remember when you apply the brakes you are using hydraulic pressure to stop the car and it is often enought to push past obstructions in the rubber lines. When you release the brakes there is no such pressure to force fluid back the other way. and the brakes won't disengage.

 

[richardengine]

Absolutely change the rubber lines; they can appear fine but "hourglass" internally from deterioration.
Remember when you apply the brakes you are using hydraulic pressure to stop the car and it is often enought to push past obstructions in the rubber lines. When you release the brakes there is no such pressure to force fluid back the other way. and the brakes won't disengage.

Are the rubber lines on all four wheels? Do you know part numbers?

 

[74 Harley]

You have one on each front wheel and one for the rear axle.
Any good parts store can get these for you. Part numbers will vary by manufacturer...

 

[Thunder rd]

1965 Thunderbird hardtop. What could cause the brakes to Stay locked after a normal stop? Step on the gas and they release what at around 1500 rpm.

Almost always the master cylinder