[T3] Master Brake Cylinder

[J. Jonik]

Re/ 71 Std FI

   Brakes got bad yesterday.  Pedal doesn't go all the way to the floor...leaving about two or three inches of pedal to stop the car carefully....with sometimes help from hand brake.

  Today, bled the system...looked for leaks etc....even under the driver's seat rug.  Nothing wet found.    (Fluid level in reservoir seemed to be down a bit since last top-up, but not sure.)  Haven't adjusted rear brakes, but hand brake pull is fine.   Bentley says if bleeding doesn't work, the problem is the Master Cylinder.

   I have one from my 73 parts car.  It's rusty but, just being pulled from the car, it's full of brake fluid.

Question....Is the only option now to just do the work of installing it to see if it works?  Any way to get an idea if it works before doing that?   Parts car has been sitting for at least 8 years.  Does that spell probable doom for the master cylinder?
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