Posted by Greg Coffin [67.176.56.70] on Tuesday, February 03, 2015 at 07:57:45 :
I bought a Dorman M101266 dual circuit master cylinder for my 6x6 project. It is designed for a Chevy disk/drum brake system. I'm trying to determine which circuit goes to the front disk brakes so I can install an external residual pressure valve on that line. I'm assuming the rear circuit will have a valve built in to the casting. Can you see the built-in valve from the port? Any help appreciated.
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