TwinTurbo.NET: Nissan 300ZX forum - there are two pistons within the MBC
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Subject there are two pistons within the MBC
     
Posted by aliaZ on May 06, 2012 at 4:07 PM
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In Reply To Rear caliper bleeding problem. posted by Mecha300zx on May 06, 2012 at 03:19 PM
     
Message it is possible for the rear brake circuit to fail, but you won't have any external leakage because the it leaks internal to the MBC. It is only when the primary (Front) seal fails that you get external leakage from the MBC.

also, it is possible that the proportioning valve within the MBC has failed too. It isn't a bad idea to rebuild/replace the MBC as preventative maintenance, IMHO

     
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