Any common problems resulting in loose-like brakes? - PeachParts Mercedes-Benz Forum

azitizz · #1 02-03-2010, 09:48 PM

Thanks for the replies.
I never noticed there were two separate reservoirs until yesterday when I got a chance to take off the wheels and take a better look. The one in the front was full but the one in the rear was empty so I was mistaken into thinking they were both full.

I checked the rear lines and the left side flexible line had some minor cracks in it but no sign of leakage. I plan to replace them all anyway as I dont know when they were last done.
Would an empty rear reservoir correspond to a rear brake line leak?

Would this possibly rule out the mater Cylinder as the culprit? (the Mercedes parts dealership quoted me over $500 for a new MC!) I found brand new ones online and from Canadian sources for as low as $60. Not sure if thats a gamble though. Is there an obvious quality difference? Sure is a price difference.

I filled up the reservoir again and bled the line I took off and it works fine again, however I know this is temporary. I'm just waiting for the parts to be shipped.

I alos was considering getting new brake pads as they may need replacing withing the next year. But when I was about to choose them I got 3 different versions. One that says for ATE Calliper 123, one for a Bendix 123 and the other simply said it was for 123 models.
All 3 options had an OEM selection. I wasnt sure if thre was a big difference between the models if they are all for 123s. The callipers appear to be original so I was just going to go for the general 123 option but perhaps someone could shed some light on the differences?

unkl300d · #2 02-03-2010, 09:59 PM

Best bet is to make sure you spec the pad for your particular caliper.
The manufacturer is stamped on an open space but you have to clean it up to see. Sometimes not that obvious.

Might as well replace the pads. Then you can eyeball the calipers for leaks.
Pad wear patterns can also shed light on calipers behavior.

I forget what's the idea behind the rear reservoir..... I only recall that one must be sure to top out both after refilling.

Diesel911 · #3 02-04-2010, 12:15 AM

Quote:

Originally Posted by azitizz

Thanks for the replies.
I never noticed there were two separate reservoirs until yesterday when I got a chance to take off the wheels and take a better look. The one in the front was full but the one in the rear was empty so I was mistaken into thinking they were both full.

I checked the rear lines and the left side flexible line had some minor cracks in it but no sign of leakage. I plan to replace them all anyway as I dont know when they were last done.
Would an empty rear reservoir correspond to a rear brake line leak?

Would this possibly rule out the mater Cylinder as the culprit? (the Mercedes parts dealership quoted me over $500 for a new MC!) I found brand new ones online and from Canadian sources for as low as $60. Not sure if thats a gamble though. Is there an obvious quality difference? Sure is a price difference.

I filled up the reservoir again and bled the line I took off and it works fine again, however I know this is temporary. I'm just waiting for the parts to be shipped.

I alos was considering getting new brake pads as they may need replacing withing the next year. But when I was about to choose them I got 3 different versions. One that says for ATE Calliper 123, one for a Bendix 123 and the other simply said it was for 123 models.
All 3 options had an OEM selection. I wasnt sure if thre was a big difference between the models if they are all for 123s. The callipers appear to be original so I was just going to go for the general 123 option but perhaps someone could shed some light on the differences?

You fixed what was causing the problem. However, changing the Hoses is a good idea.
Unless you are buying your brake parts local; where they can easily be returned it is best you get under the Car and identify what company's Brake Calipers you actually have.
It is hard to read but I know that the ATE Brake Calipers are marked with an styalized ATE with the A being larger and the other letters getting smaller as you read left to right. Sort of like a Trialngle with the A being the tallest part.