1. This site uses cookies. By continuing to use this site, you are agreeing to our use of cookies. Learn More.

Brake judder problem

Discussion in 'Suspension, Steering & Brakes' started by Jimbo1959, Oct 6, 2019.

  1. Jimbo1959

    Jimbo1959 Senior Member

    Messages:
    1,077
    Likes Received:
    815
    Joined:
    Mar 22, 2018
    Location:
    Ayrshire
    Your Mercedes:
    E350 CDi Blue Efficiency Sport Coupe, fast, smooth, comfortable, what more does one need?
    After much faffing about trying to cure the problem, diagnostics and saving like mad, I've now managed to get the money together to replace the complete front brake system on my Coupé.

    The general consensus being that the front calipers are jamming on, heating up the discs which is causing them to warp. If I drove like my Grandpa I'd never even be aware of the problem, as soon as one is "making progress" however, problems, problems.

    When I asked for opinions on the forum regarding my judder problem, it was recommended that I buy only O.E. parts for the car. Working in the motortrade in the parts side of things, this galled me purely for the reason that MB outsource their parts like every other manufacturer and, usually want three times the price for the same parts if purchased from them.

    The parts advisor Neil at MB Grangemouth, has been extremely helpful and gave me the discounted MBO club price however, this was still close to £1K, a significant amount of money in anyones book.

    I was talking to one of the parts advisors at work about this and with his help we have managed to track down the O.E. parts that I need. So, for both front calipers, two front discs, a set of front brake pads with sensors and two front flexihoses I will now be saving £460 on the parts alone.

    It was my intention to change all the parts and complete the job myself, however, due to the age of the car (it's now ten years old) I've decided to get help to do it. Reason being, I have a friend at one of my customers garages who, has a brake pipe flaring tool kit which I may need (knowing my luck, despite meticulous preparation, cleaning pipe ends and covering all nuts and bolts with WD40), one or more of the pipes will probably break, the old saying, "fore warned is fore armed", comes to mind. My hope being I will not need the kit if I have it. So, next Saturday the deed will be done.

    Cars! Don'tcha just love 'em?

    I'll update with the details of problem solved or not.
     
    Last edited: Oct 6, 2019
    Wighty and davidsl500 like this.
  2. joderest

    joderest Senior Member

    Messages:
    388
    Likes Received:
    160
    Joined:
    Apr 16, 2018
    Your Mercedes:
    ML270 2003
    I had a brake judder issue on my w163, but from the rear, and it did the same, warped a new disc. I took off callipers and re built them using new rubbers and seals, new disc's (2nd set) and pads, been fine since.
    Here;s a tip, i was also worried about releasing the brake pipe unions to caliper, as they looked like they would be seized, and as you cannot use heat (brake fluid does not like heat !!!), i thought i was going to have to replace pipes, but i bought a product that no only is a releasing fluid but is a freeze agent, takes temp down to about -15. It worked really well, i had no issues getting pipes undone.
    I cannot remember what it was called but found it on e bay.
    Freeze releasing fluid, have a look, may help you.
     
    Jimbo1959 and Wighty like this.
  3. Wighty

    Wighty Senior Member

    Messages:
    6,798
    Likes Received:
    3,904
    Joined:
    Aug 4, 2016
    Location:
    Sunny Essex
    Your Mercedes:
    W211/E320cdi/2009 and CLK200k 2009
    And I followed your brave example by refurbing my CLK calipers myself . I didn't have any trouble with my pipe to caliper Union , even on a 10 year old car they came off easily .
    The only trouble I had was getting new bleed nipples to work properly , I had to work each one in and out 10-20 times using red rubber grease on the threads and cleaning on each removal to get rid of any rust and dirt in the caliper hole for the bleed nipple
     
  4. joderest

    joderest Senior Member

    Messages:
    388
    Likes Received:
    160
    Joined:
    Apr 16, 2018
    Your Mercedes:
    ML270 2003
    wighty, yep , same as, forgot all about that, my nipples (sounds a bit gross !!!) were very rusty and rounded off.
     
    Wighty likes this.
  5. malcolm210

    malcolm210 Senior Member

    Messages:
    3,490
    Likes Received:
    557
    Joined:
    Aug 21, 2005
    ‘In the old days’ we used to use washing up liquid bottle top stoppers (or similar) on the nipples to stop ingress of water/salt/grime pity the manufacturers didn’t adopt the same
     
    Wighty likes this.
  6. Wighty

    Wighty Senior Member

    Messages:
    6,798
    Likes Received:
    3,904
    Joined:
    Aug 4, 2016
    Location:
    Sunny Essex
    Your Mercedes:
    W211/E320cdi/2009 and CLK200k 2009
    The new ones came with rubber caps for the ends , and I put a good dollop of red rubber grease on the threads to keep them rust free
     
    malcolm210 likes this.
  7. OP
    Jimbo1959

    Jimbo1959 Senior Member

    Messages:
    1,077
    Likes Received:
    815
    Joined:
    Mar 22, 2018
    Location:
    Ayrshire
    Your Mercedes:
    E350 CDi Blue Efficiency Sport Coupe, fast, smooth, comfortable, what more does one need?
    Really looking forward to tomorrow, starting work on the front brakes, with a little luck and no untoward issues should be back on the road about tea time. Can't wait!
     
    Wighty likes this.
  8. joderest

    joderest Senior Member

    Messages:
    388
    Likes Received:
    160
    Joined:
    Apr 16, 2018
    Your Mercedes:
    ML270 2003
    have fun, dont forget copperease or some other assembly compound (just in case you have to take it all apart again)
     
  9. OP
    Jimbo1959

    Jimbo1959 Senior Member

    Messages:
    1,077
    Likes Received:
    815
    Joined:
    Mar 22, 2018
    Location:
    Ayrshire
    Your Mercedes:
    E350 CDi Blue Efficiency Sport Coupe, fast, smooth, comfortable, what more does one need?
    You are talking to an OCD reveller, it will be done properly, I have no doubt. No chances will be taken, no perfection forsaken.
    I will try to remember to take photos as we go. Depends how dirty my hands get. Don't want to kill my camera phone.
     
    Wighty likes this.
  10. OP
    Jimbo1959

    Jimbo1959 Senior Member

    Messages:
    1,077
    Likes Received:
    815
    Joined:
    Mar 22, 2018
    Location:
    Ayrshire
    Your Mercedes:
    E350 CDi Blue Efficiency Sport Coupe, fast, smooth, comfortable, what more does one need?
    Job done, no problems or issues with the work and, it was flown through so quickly that, I forgot all about taking pictures. :oops:

    There was defo a problem with both calipers though, as the pad which locks into the piston, on both sides was worn at an angle, suggesting that the pad and/or the piston were seiz(ed/)ing in the caliper. The right side being worse than the left.

    This would explain the judder at higher speeds and during harder braking.

    During "old man driving style" when the brakes only needed a gentle pressure to slow down, no judder could be felt.

    I will update the performance of the brakes as soon as they are properly bed in, first indications feel good though, the whole driving/braking experience definitely feels smoother, a good sign I think.

    Time now to give the car a good wash and scrub up.

    Lord, I nearly wrote "give her a good wash and scrub up" there, that would have gained some salty comments, lol. :D:D:D
     
    Wighty and Blobcat like this.
  11. vtaylor78

    vtaylor78 Senior Member

    Messages:
    1,415
    Likes Received:
    580
    Joined:
    Jan 5, 2012
    Location:
    Northamptonshire.
    Your Mercedes:
    E350 CDI Coupe W207 2010 \ SLK 250 R172 2011.
    Great work Jimbo , don’t forget SWMBO’s car if you’ve got your bucket out :D.
     
  12. OP
    Jimbo1959

    Jimbo1959 Senior Member

    Messages:
    1,077
    Likes Received:
    815
    Joined:
    Mar 22, 2018
    Location:
    Ayrshire
    Your Mercedes:
    E350 CDi Blue Efficiency Sport Coupe, fast, smooth, comfortable, what more does one need?
    IMG_3967.JPG IMG_3965.JPG

    Looks as though I'm going to have to take the calipers off again so that I can paint them. After washing the alloys and getting the oily finger prints off the brakes it has highlighted the difference in colour, bu99er!!

    Nothing ever goes smoothly does it?

    Can you see the copper grease alright joderest? :D
     
    Wighty likes this.
  13. OP
    Jimbo1959

    Jimbo1959 Senior Member

    Messages:
    1,077
    Likes Received:
    815
    Joined:
    Mar 22, 2018
    Location:
    Ayrshire
    Your Mercedes:
    E350 CDi Blue Efficiency Sport Coupe, fast, smooth, comfortable, what more does one need?
    It can wait Vincente, tomorrow's another day sir! ;)
     
    vtaylor78 likes this.
  14. John Laidlaw

    John Laidlaw Senior Member

    Messages:
    21,187
    Likes Received:
    5,941
    Joined:
    Nov 15, 2013
    Location:
    Wirral
    Your Mercedes:
    UnMercs BMW i8 Volvo XC90
    Can we see the copper grease? My lord sir.. :p
     
    Wighty likes this.
  15. OP
    Jimbo1959

    Jimbo1959 Senior Member

    Messages:
    1,077
    Likes Received:
    815
    Joined:
    Mar 22, 2018
    Location:
    Ayrshire
    Your Mercedes:
    E350 CDi Blue Efficiency Sport Coupe, fast, smooth, comfortable, what more does one need?
    Yes you can, first photo just below the Mercedes Benz logo'd black plate.
     
  16. John Laidlaw

    John Laidlaw Senior Member

    Messages:
    21,187
    Likes Received:
    5,941
    Joined:
    Nov 15, 2013
    Location:
    Wirral
    Your Mercedes:
    UnMercs BMW i8 Volvo XC90
    Sorry my sarcasm as usual Jim, my exclamation was the trowel load :rolleyes:
     

Share This Page