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Old 05-15-2006, 10:59 AM
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76 Corvette Brake Problem

I've replaced the master cylinder(twice), and all 4 calipers. I've bled the brakes, no air from anywhere. No leaks on floor under car. I can't get a pedal no matter what I try. Any ideas?

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Old 05-15-2006, 11:13 AM
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Did you replace the lines? Sounds like that's all you haven't tried. I have seen lines plug up completely and cause these troubles.
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Old 05-15-2006, 11:17 AM
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No, I haven't tried replacing lines. But it bleeds even on all sides. The booster doesn't hold vacuum, But I would imagine that should cause the pedal to be hard.
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Old 05-15-2006, 02:15 PM
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Did you bench bleed the master cylinder (s) before installing it?
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Old 05-15-2006, 02:55 PM
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Yeah. Both of them.
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Old 05-15-2006, 03:10 PM
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On those cars I jack the back end of the car up a couple inces higher than the front, and tap on the calipers to help dislodge air bubbles while gravity bleeding. Raising the back levels the master and the calipers. I read it in a 'bleeding sequence' manual I have.

Let's see...
"Corvette, 1983-65,
LR inner, LR outer, RR inner, RR outer, LF, RF
Raise car to level master cylinder, tap calipers lightly to dislodge any air"

I've had best luck gravity bleeding or pressure bleeding them. When manual bleeding, I never let the pedal operator pump the pedal. Just push down and let up when I tell them to. I close the bleeder before they're done pushing and them have them let up.


EDIT
Oh, BTW, if the rotors are no longer riveted you have to fasten them down with a lug nut or they'll float around and you cant get a pedal.
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Old 05-16-2006, 10:19 AM
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Hey, Just thought I'd mention this. Wev'e seen this type of problem at
our shop. Make sure you check... Calipers installed with bleeders up top.
I know it sounds silly... pads binding in the slides.. Theses two can catch you of guard.
Mark
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