[FC] Brakes

[Bill Wells]

What I encountered when I added a dual MC to my Greenbrier was similar. I could not get the brakes to bleed and get a decent firm pedal. I found that the MC pushrod was too long and did not allow the MC to fully release. I ground it down until I had freeplay between the MC piston and the pushrod. I bled all wheels again and all is well months later. 
I still like the feel of the single MC, but have to have the safety factor. One of our club members has had a rear wheel come off a couple times and when the drum came off as well, no brakes. 
 
Bill Wells

Wild8bill at aol.com wrote:
OK, I've bled all the way around about half a dozen times. I still have a 
pedal that goes all the way to the floor (it can be "pumped up" to get pressure; 
2-3 pumps). I stopped with the one man bleeder and got a helper to push the 
brake pedal so I could see what was going on; no bubbles except the rt front 
wheel, bubbles would come out every time the pedal was pressed. Big bubbles. I 
must have run two bottles of fluid through there, so any air in the line should 
have been pumped out; the bubbles never decreased in volume. There aren't any 
leaks in the lines that I can find. The fact that I can "pump it up" and it 
holds pressure verifies that. 

So, do I have a bad wheel cylinder or master cylinder? Previous owner put a 
dual-cylinder master on this '61 'Brier.
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