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| Flair Birds [1964-1966] You have a Fourth Generation Bird or just have some questions about them? Then this forum is for you, check it out. |
This is a discussion on 1964 power brakes within the Flair Birds [1964-1966] forums, part of the Thunderbird Model Years category; My 1964 Thunderbird for some reason has decided to not have power brakes every now and then. It will have ...
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04-25-2011, 04:13 PM
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1964 power brakes
My 1964 Thunderbird for some reason has decided to not have power brakes every now and then. It will have power and the next time it will not have power brakes. I replaced one of the vacuum hoses that went to the transmission but it mad no difference. Does anybody have any idea where to start with a problem like this. If it quit working all together it would be easier to fix.
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05-02-2011, 11:18 PM
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tbird1964,
It sounds like you have a leak in the booster unit. Sometimes the master brake cylinder will leak fluid into the booster and cause it to corrode and leak internally - and you can't see it. Check and see if it is better at higher rpms and worse at lower rpms. If so, you have a small leak that can be fixed only by replacing the booster. It's not too expensive but a real pain to do.
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05-06-2011, 11:30 PM
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I think I have cured the problem. I researched on the net and read that brake fluid is good to redo the flexibility of rubber. I suspected the check valve was the problem and put some brake fluid on the check valve where it makes contact on the booster. I have not had the problem again and have driven it several times. In fact I now have better brakes than I did before.
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