Brake Bleeding Frustration RESOLVED.

[Ralph B.]

The problem wound up being the MC; after several attempts of bench bleeding I finally realized that there was no fluid at all being pushed out the rear port whereas the front port was aggressively shooting out fluid when manually depressing the piston. So per Larry's recommendation I sent it out to Lone Starr Caliper in Texas. Ken and his staff found the small intake holes were out of specification (too small) and stainless sleeve was not deburred properly from the previous rebuild, so they re-drilled the holes, deburred the bore, re-worked the snap ring groove, installed a new piston kit, functional tested, blasted the outside and repainted with semi gloss black, and they did all this within 24 hours, they are real pros and true gentlemen.

As soon as I received it back I bench bled the MC and noticed a big difference with rear port now pushing fluid out as it should. I installed the MC in the car, gravity bled all (4) calipers using a OEM One Man Brake Bleeder which I got from Auto Zone ---------- this is one neat tool @ only $7.95 which is ideal for precise gravity bleeding.

Anyway this is why I was unable to pedal bleed and have the rear calipers function, so I thank everyone for their much needed help, and Jim is absolutely correct that DOT 5 (silicone) gravity bleeds just fine unlike some reports.

Thank you again,
Ralph

[Larry M.]

Re: Brake Bleeding Frustration RESOLVED.

Ralph:

Glad things turned out well. That's what this Tech Board is all about........helping folks and sharing information.

Thanks for posting the final outcome.

Larry

[Richard G.]

Re: Brake Bleeding Frustration RESOLVED.

I have to wonder if the parts used for the rebuilding were Chinese? In our highly litigious society the if the parts builder was local he would already be out of business.
Rick

[Peter J.]

Re: Brake Bleeding Frustration RESOLVED.

Gary,
Glad to hear you got the job done. I went and helped a friend bleed brakes yesterday on his hot rod truck chassis (thankfully the body was still off) and after having such an easy time with the Motive bleeder system in my -66 this one was a nightmare as there were no less than four leaks in the lines that kept sucking in air. First rule next time I help anybody bleed brakes I am going to check the fittings myself.