brake bleading

Topic: brake bleading (Read 2249 times) previous topic - next topic

brake bleading

August 30, 2005, 09:54:15 PM

ok. so you just installed an entirely new brake system compleat with big cobra brakes and new master cylinder, along with some new plumbing and hoses. so how do u get all the air out? iv tryed bleading it like 4 different ways, hand pumps, vaccume pumps, pumping the pedal, and gravity. theirs still a lot of air in their with no pedal pressure what so ever. is their some way to blead the mc that im misssing? anybody got a how to link or something that i can go over because i know i must have done something stupid or missed something.

Re: brake bleading

Reply #1 – August 30, 2005, 10:28:57 PM

How about reverse bleeding? Possibly by using a low pressure pump connected to the resevoir to push the fluid out. That would also clear out any obstructions and impurities in the lines.

Re: brake bleading

Reply #2 – August 30, 2005, 10:31:23 PM

Did you bench bleed the master cylinder before you installed it?

I would think that if there was air in the system you would be able to eventually force it out by bleeding at the calipers, it would probably just take awhile...

Re: brake bleading

Reply #3 – August 30, 2005, 10:52:30 PM

yeah i'd think that to. we hooked up a air powered brake bleader to the dam car for a half hr. or so.

and i tryed bench bleading it 2x, but incase im a retard... can some one illabrate on how its done? i feel like a retard.

Re: brake bleading

Reply #4 – August 30, 2005, 11:00:25 PM

eh...i take it you got the rest of the suspension worked out. how id go. im right behind you with the same deal...id love to know what im in for. good luck bleeding out the system. i never gave it a thought looking at a pile of parts and boxes in my bedroom... :hick:

Re: brake bleading

Reply #5 – August 30, 2005, 11:00:57 PM

compress the piston with the resevoir full of fluid until there are no bubbles what so ever.

Re: brake bleading

Reply #6 – August 30, 2005, 11:18:36 PM

Quote from: 88turbo

compress the piston with the resevoir full of fluid until there are no bubbles what so ever.

Some m/c's come with little plastic fittings that screw into the ports and include some tubing. YOu basically hook the tubes up to the fittings and route them back into the reservoir. Slowly work the m/c piston in and out until there are no more bubbles in the tubes.

If you don't have these you'll have to improvise...

Re: brake bleading

Reply #7 – August 31, 2005, 11:31:49 AM

Mine had little plastic plugs that were supposed to let a little fluid seep out but not let air back in, they seemed to work good enough.