Brake Bleeding Problems -- Any advice?

[Russell]

Hey guys!

A friend of mine was out on the trail yesterday and blew a seal in her master cylinder. I brought her out to my place to change the M/C out, which is a pretty typical job. I made sure to bench bleed it, and didn't get any more air out of the M/C before installing it. I bolted it on, then bled the lines as they go into the M/C. Got all sorts of air out, so I kept going till the air stopped. Tried the truck, and the pedal goes straight to the floor.

I then bled the whole system, and got a bit of air out, but nothing remarkable.

Truck's pedal still hits the floor, and has very little braking force.

Does anyone have any suggestions of what may be up with the thing? Its a 95 fullsize Bronco BTW

Thanks!

Russ

 

[shane74]

Odds are you still have air in the system. Try bleeding the brake system a couple more times. You might be suprised at how much air gets into a system when you swap out a MC.

 

[dremu]

Bleeding brakes is a miserable, slimy, evil job.

Pressure bleeding with the garden sprayer is the only thing that's worked for me, as I'm too impatient to gravity bleed and I can never find a buddy to do it the old fashioned, two-man way.

-- A

 

[pauly383]

Its easy to do solo with a piece of tubing and jar of brake fluid . Simple and sweet solo brake bleeding .

 

[Russell]

Well, my bleeding wasn't the problem -- The drum's spring system fell apart somehow... Took the drum off, and all the parts and peices fell down on the floor, LOL

Fixed the drum, put it back together, and dang, suddenly we've got a heck of a stiff pedal!

Then went to bleed my GMC's brakes since we were already covered in brake fluid, and something is horribly wrong. Back brakes bled alright, went to do the fronts, and it puked out some puss covered crap, and I lost my entire pedal, no brakes at all. Front is full of air

No idea what happened, but it certainly is frustrating. I'm thinking I'm going to pick up a fresh 3/4 ton 4x4 to drive for the summer, and re-start my GMC from the frame again, doing it properly from start to finish...