front right brake

[dthomso1]

One of my projects this winter was to do a complete rebuild of the brakes - new rotors, rebuilt master cylinders, ss lines, rebuilt calipers (thanks Skydoc!).

 

I know the brake bleeding is a pain but I have managed to get the rear/front left air-free after at least a dozen bleeds! I now have good pedal pressure. The easy one, the front rt however, is driving me crazy - no matter what I do, I cannot get any lever pressure. I rebuilt the master cylinder and even disassembled it twice to make sure I installed the rubber cups with the large diameter going into the bore first. After many brake bleeds, there are no more bubbles but still the lever has zero resistance. I must be missing some thing obvious - any hints out there?

 

Thanks!

[MiCarl]

One of my projects this winter was to do a complete rebuild of the brakes - new rotors, rebuilt master cylinders, ss lines, rebuilt calipers (thanks Skydoc!).

 

I know the brake bleeding is a pain but I have managed to get the rear/front left air-free after at least a dozen bleeds! I now have good pedal pressure. The easy one, the front rt however, is driving me crazy - no matter what I do, I cannot get any lever pressure. I rebuilt the master cylinder and even disassembled it twice to make sure I installed the rubber cups with the large diameter going into the bore first. After many brake bleeds, there are no more bubbles but still the lever has zero resistance. I must be missing some thing obvious - any hints out there?

 

Thanks!

 

Loosen the banjo bolt at the master cylinder 1/4 turn. Slowly squeeze the lever. Close the bolt before you release the lever. Repeat a few times. Air can get trapped there and it'll never build pressure.

 

You want to have a good wad of towels around everything when you do this, it's messy.

[Snaggletooth]

Yeah....what he said! That lil bubble at the connection to the master can make ya nuts!