Brake pads? or something else? Squeaking... - Page 4 - PeachParts Mercedes-Benz Forum

leathermang · #46 04-25-2011, 11:52 PM

Quote:

Originally Posted by azitizz

Its not looking good. Ill be looking for a new set of calipers..

That is probably the best thing to do... no use taking chances with brakes...

azitizz · #47 06-14-2011, 08:46 PM

So waking this thread up again... I completely replaced the front calipers with a brand new set. The Mechanic i bought the car off in NC was nice enough to hook me up with a brand new pair for just over $100 each. He was even surprised as to why they were so cheap. He mailed them up to me and indeed they were brand spanking new Bendix calipers. They were pretty easy to install but they took a bit of work to bleed. I ended up needing to take a vacuum pump and suck it from the bleed valve in order to get the process going otherwise it seemed to be doing nothing with the pedal pushes.

Does anyone know approximately how many pedal pushed you need to press in order to do a good bleed of each brake both front and rear?

I seemed to get a good bleed as far as I can tell. I bled and i bled and I could quite tell if the little tiny cloud like bubbles were actually bubbles from the lines or if it was simply getting in to my clear vinyl hose because it didnt form a seal around the bleed valve properly (it wasnt super tight)

I still get a funny brake behavior now. If I havent pressed the brake while driving for a few minutes and press it the fisrt pressing will feel loose and go closer tot the floor. if I press it again immediately it is tighter and feels more responsive. Could this be due to air still or something else?

Yak · #48 06-15-2011, 06:51 PM

Quote:

Originally Posted by azitizz

So waking this thread up again... I completely replaced the front calipers with a brand new set. The Mechanic i bought the car off in NC was nice enough to hook me up with a brand new pair for just over $100 each. He was even surprised as to why they were so cheap. He mailed them up to me and indeed they were brand spanking new Bendix calipers. They were pretty easy to install but they took a bit of work to bleed. I ended up needing to take a vacuum pump and suck it from the bleed valve in order to get the process going otherwise it seemed to be doing nothing with the pedal pushes.

Does anyone know approximately how many pedal pushed you need to press in order to do a good bleed of each brake both front and rear?

I seemed to get a good bleed as far as I can tell. I bled and i bled and I could quite tell if the little tiny cloud like bubbles were actually bubbles from the lines or if it was simply getting in to my clear vinyl hose because it didnt form a seal around the bleed valve properly (it wasnt super tight)

I still get a funny brake behavior now. If I havent pressed the brake while driving for a few minutes and press it the fisrt pressing will feel loose and go closer tot the floor. if I press it again immediately it is tighter and feels more responsive. Could this be due to air still or something else?

That sounds like symptoms of air in the lines. Vacuum bleeding is not preferred, although I use it like you seem to have in order to start the fluid flowing from the MC.

If you ever let the reservoir run dry while filling your calipers then you pulled air into the lines. That's one reason people recommend pressure bleeding.