If by "deformed" MC gasket you mean it grew oversize, this is a prime indicator of contamination in the system. Even a small amount of petroleum based product will cause swelling of the rubber in the brake system. Shouldn't affect the power booster, but any brake system part that uses rubber could be-MC, WC, calipers, hoses, proportioning valve, etc. Once you do get it working, be sure to completely flush the system with new fluid to prevent reocurrence.
Glenn





From: Trooper <[EMAIL PROTECTED]>
Reply-To: [EMAIL PROTECTED]
To: [EMAIL PROTECTED]
Subject: Re: [Chevelle-List] Brake Problems
Date: Tue, 10 Dec 2002 09:10:51 -0600

Also I've seen lines get rusted closed from the inside and look
absolutely fine on the outside. I have cut lines that have just a pin
hole for an ID. This would also be consistent with what your
experiencing. The brake fluid can't bleed back so the brakes lock then
over time they bleed through the bad line and the brakes release.

Trooper

> Brian Zack wrote:
>
> It could be in the distribution block/proportioning valve. Maybe
> gummed up and sticking.
>
>
> Brian Zack
> '70 Chevelle Malibu
>
> mailto:[EMAIL PROTECTED]
>
>      -----Original Message-----
>      From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]
>      Sent: Monday, December 09, 2002 10:30 PM
>      To: [EMAIL PROTECTED]
>      Subject: Re: [Chevelle-List] Brake Problems
>
>      Just purchased this 70 Chevelle.
>      Driving to the movie store with my kids last weekend and the
>      front brakes slowly lock up. Had to have the car towed home.
>      Later that afternoon I was able to driver her into the
>      garage. I presumed car was sitting up for quite a while and
>      calipers were gummed up. took one side down and certainly
>      looks that way. Purchased 2 newly loaded calipers and hooked
>      everything back up.
>
>      Cant get fluid through the lines. Took rubber lines off and
>      can blow through with no problem. Tried pumping through
>      disconnected metal line and still very little comes through.
>      Appears I have a blockage somewhere from last weeks "Cooking
>      of the Brakes"
>      Noticed when I took master cylinder cap off the rubber
>      gasket was all deformed? replaced it with an aftermarket
>      gasket on Sunday as all I could get.
>
>      Any ideas here. I certainly don't want to replace the master
>      cylinder and power brake booster.... But right now I just
>      forked out big bucks for a car I cant drive...
>
>      I have been a Camaro guy all my life until now. Never had
>      this happen before...

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