Parts Catalog Accessories Catalog How To Articles Tech Forums
Call Pelican Parts at 888-280-7799
Shopping Cart Cart | Project List | Order Status | Help




Go Back   PeachParts Mercedes-Benz Forum > Mercedes-Benz Tech Information and Support > Diesel Discussion

Reply
 
LinkBack Thread Tools Display Modes
  #16  
Old 06-26-2011, 06:08 PM
Registered User
 
Join Date: Mar 2010
Location: Chicago Il
Posts: 44
Quote:
Originally Posted by JimSmith View Post
First, it is not unusual for a service shop that is not very familiar with MBs to have difficulty refilling the brake reservoir correctly. Old cars can have discolored plastic reservoirs that make seeing the rear section is full very difficult, as when it is empty there is no fill "line" to detect and an inexperienced mechanic may conclude the rear section is full when it is empty. Part of the problem can come if the shop is full and they do this in the lot where the car might not be on level ground. Nose down at any significant angle and filling the rear section (normally done by overfilling the front section) and this becomes near impossible.

As to your state of repair, I recommend you purchase only new or rebuilt by a professional service brake calipers, new hoses and start over. While you are at it, jack up the rear of the car, and try rotating the wheels by hand. IF the service brake is dragging, open the bleed screw and see if that changes anything. If you are lighting fires due to braking friction you should have very apparent drag. If opening the bleed screw does nothing, take the caliper on the side or sides that drag off and see if the problem goes away. I have had a buddy drive with the emergency brake on because the warning light went out on the dash, and cause the wheel bearings to fry (no fires though), then seize at highway speeds and spin in the bearing housing. Big bummer.

But you need to identify what is dragging. The service brake, the parking brake, or the wheel bearings. Or is the problem something else? Like fuel dripping on the brakes? The driver's side has a breather line, the main fuel line and the return line tucked up in the wheel well, and they generally rot out by now.

Good luck,

Jim
i will redo the hoses, and I will try again, the calipers are good because when i release the fluid back to the calipers they dislocate from the rotors.
At this moment i disconnected the rear brakes and wait for parts to show up.
I suspect the MC to be bad, actually i suspect that the MC doesn't relive the pressure when i release the brake and that is happening only for the rear brakes...so i suspect the front of the piston or the pin inside the piston it doesn't touch correctly the release point.
About the rear chamber i have paid attention to that when i was doing the bleeding!


I'm not a professional but in the past i fixed other cars with brakes problems without any issue, starting from MC to calipers and hoses.
Reply With Quote
  #17  
Old 06-26-2011, 06:08 PM
Registered User
 
Join Date: Mar 2010
Location: Chicago Il
Posts: 44
Quote:
Originally Posted by kerry View Post
Where are you releasing pressure on the line? At the caliper or at the master cylinder?
at the caliper
Reply With Quote
Reply

Bookmarks

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On
Trackbacks are On
Pingbacks are On
Refbacks are On




All times are GMT -4. The time now is 08:34 PM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2018, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0
Copyright 2018 Pelican Parts, LLC - Posts may be archived for display on the Peach Parts or Pelican Parts Website -    DMCA Registered Agent Contact Page