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Posted by: rosenfe Aug 27 2014, 02:43 PM

Pmb recommends gravity brake bleeding,any opinions about this method?

Posted by: Harpo Aug 27 2014, 03:50 PM

I have heard of manual, power & vacuum brake breeding but never gravity bleeding.

David

Posted by: rosenfe Aug 27 2014, 04:34 PM

Check pmb website under tech tips

Posted by: Philip W. Aug 28 2014, 12:10 PM

i used it , and it seemed to help get a lot of the air out of the system.
but i had some other issues. - note- you have to set the rear venting clearance - i ended up taking it to a local shop to do that and they power bled them.

Posted by: zipedadoo Aug 28 2014, 01:15 PM

I rebuilt the rear calipers and used the gravity method to bleed the system. Worked great. Setting the venting clearance is easy too.

Posted by: pcar916 Aug 29 2014, 06:06 AM

It works. The only issue is that it leaves the system open to air/moisture for longer than I'd like. I'll take pressure bleeding any time.

Posted by: wndsrfr Aug 29 2014, 06:21 AM

I got the "Speedbleeders" & really like them......simple, fast, neat. No affiliation.

Posted by: dlee6204 Aug 29 2014, 06:37 AM

If I have a dry system I usually start out gravity bleeding initially to prime the system. Then I finish it off the old fashion way.

Posted by: GeorgeRud Aug 29 2014, 09:15 AM

When I replaced my calipers with rebuilt ones (thanks Eric), I had a heck of a time getting a firm pedal after bleeding. A long ride on a bumpy road followed by pressure bleeding finally did the trick for me, but gravity bleeding is certainly an easy, safe way to bleed the brakes as well. In the long run, whatever works to get rid of air in the system!