Can't stop car while braking! - PeachParts Mercedes-Benz Forum

lsmalley · #1 01-24-2011, 01:26 AM

I was assembling the pads wrong. There was a T-shaped metal spacer that goes between the pads that I failed to put on correctly. Thanks for all your input everyone.

Mike Murrell · #2 01-24-2011, 01:43 AM

That's good - but as stated above - Mity Vac not suited for ABS systems. Pressure bleed the system.

Hirnbeiss · #3 01-24-2011, 12:47 PM

Quote:

Originally Posted by Mike Murrell

That's good - but as stated above - Mity Vac not suited for ABS systems. Pressure bleed the system.

I don't want to come off as a mity-vac expert or proponent, but I don't think this claim is correct. I have used the mity vac numerous times on ABS-equipped cars. The only issue I see with the method, as they point out on their own website, is that you can draw in some (very) tiny bubbles around the bleed screw threads. This is addressed by using teflon tape around the threads or by using the pedal-pal method for the final bleed, although I've never noticed the bubbles to impact pedal feel much anyway.
Maybe there were some early ABS systems that it didn't work on. Any additional info?

tbomachines · #4 01-24-2011, 01:10 PM

Quote:

Originally Posted by lsmalley

I was assembling the pads wrong. There was a T-shaped metal spacer that goes between the pads that I failed to put on correctly. Thanks for all your input everyone.

I highly doubt that this was the source of your problem, as I can't think of a way that it would change the pressure of the pedal and pedal feel. More likely after changing the clip you were able to get some air bubbles or a blockage out of the system. I would be verrrrry careful

lsmalley · #5 01-25-2011, 04:53 AM

Quote:

Originally Posted by tbomachines

I highly doubt that this was the source of your problem, as I can't think of a way that it would change the pressure of the pedal and pedal feel. More likely after changing the clip you were able to get some air bubbles or a blockage out of the system. I would be verrrrry careful

the spacer applied the necessary resistance against the caliper when I put it on correctly, but before then I did not have it between the two brake pads and so when I pressed down on the pedal I got no resistance and so the pedal sank. This is just according to what I have done and witnessed. the brakes were bled with the mity vac the same way as before. not sure how the problem was fixed, but I'm glad. I will however be cautious because a lot of you seem to think that the spacer wasn't the issue so I will continue to drive carefully and monitor everything for about a month. Thank you all again.