power brake booster fail?
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Joined: May 2014
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power brake booster fail?
In the past few years I have replaced the power brake booster 3 times.They work fine after installation but it seems that if i have to brake hard it fails and there are no more power brakes. It's a 71 cutlass supreme convt. 350 2 bbl
Last edited by mikeman; May 13, 2014 at 02:32 PM. Reason: forgot to say what type of car
Registered User
Joined: Feb 2013
Posts: 15,409
From: Phoenix, AZ
I agree we need a better description of the failure.
With 3x failures that you have experienced after hard braking, the only thing that comes to mind is the push rod may not be adjusted properly and it's too long, so when you stand on the pedal you are breaking something inside the booster.
Maybe that isn't even mechanically possible, but it's all I can come up with from your description.
With 3x failures that you have experienced after hard braking, the only thing that comes to mind is the push rod may not be adjusted properly and it's too long, so when you stand on the pedal you are breaking something inside the booster.
Maybe that isn't even mechanically possible, but it's all I can come up with from your description.
Just an Olds Guy
Joined: Jul 2008
Posts: 24,528
From: Edmonton, AB. And "I am Can 'eh' jun - eh"
When you replaced the booster, are you sure you used the right hole on the brake pedal when reconnecting the new clevis? 2 failures so close together also makes me wonder about the vendor of the booster.
Old(s) Fart
Joined: Mar 2007
Posts: 50,802
From: Northern VA
This needs to be verified, but I don't think it's physically possible to force the clevis to align with the wrong hole. It just doesn't move enough, at least not on an A-body.
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delta_88_germany
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