Rear Brakes

[mustangman1974]

I got a bit of a mystery. Recently I check my brake fluid and noticed lower fluid for my rear brakes. Considering I just changed them I marked it up to forgetting to refill the master cylinder. I filled it and checked it a day later and did not notice a loss. I checked it a week later and it was low again. II jacked up the car and no leaks on the rear cylinders, lines, or hoses. However I noticed there was fluid all over the master cylinder. So I refilled and cleaned. about 4 days later it was lower again and the leak was on the cap.

Could something be forcing the fluid beyond the cap and gasket? Could my proportional valve been changed? Any hints?

Oh its a ssbc front disc conversion.

 

[jcp123]

TTT. Have this same exact problem on my SSBC kit, but also had on my '68 as well which had the Granada disc swap. No idea what causes it...

 

[mustangman1974]

hey could it be the adjustable proportional valve?

 

[mustangman1974]

Anybody else every have this happen. I read breed the brakes and replaces the cover seal and its still squeezing out of the rear braks portion of the master cylinder

 

[mustangman1974]

Well maybe I should just replace the master cylinder. Does anybody know the master cylinder replacement for ssbc dual bowl disc/drum manual.

 

[Edbert]

If it is leaking out from under the cap and the cap is not broken or warped and the gasket is in good shape, then it is the cylinder itself or a (completely) blocked line, which would be very odd.

I'd suggest buying a replacement MC from the local parts store. For the 68 just tell them you have a disc brake car from the factory, sometimes those guys behind the counter get all confused if you ask for something that is not in their computer.

 

[Decurion]

Probly just a leaky cover gasket. Id try a new lid and gasket first. Should only be a few bucks and a bunch easier than changing the master. If it still leaks, then try the master cylinder, etc.