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 > Tech Help

Reply
 
LinkBack Thread Tools Display Modes
  #1  
Old 09-07-2016, 11:35 PM
Banned
 
Join Date: Dec 2007
Posts: 5,061
1991 560SEL: New Meyle rotors and Wagner Thermo Quiet disc pads - TIGHT FIT!!

Installed Wagner Thermo Quiet brake pads on new Meyle vented front disc rotors.

I had to use a pry bar to move the pistons back far enough so I could install the brake pads. The instructions for these particular brake pads say to not install any chemical compounds on the insulator area (whatever that is). I went ahead and installed Mercedes Benz Brake paste on the backs of the pads and the holes as well as the brake pins.

As you can see from the photos, the pads are in their TIGHT! They are so tight the rotor doesn't spin freely. As a matter of fact, it doesn't spin at all. What am I doing wrong?


Attached Thumbnails
1991 560SEL: New Meyle rotors and Wagner Thermo Quiet disc pads - TIGHT FIT!!-wagner-brake-pads-010.jpg   1991 560SEL: New Meyle rotors and Wagner Thermo Quiet disc pads - TIGHT FIT!!-wagner-brake-pads-011.jpg  
Reply With Quote
  #2  
Old 09-07-2016, 11:57 PM
Banned
 
Join Date: Dec 2007
Posts: 5,061
Just found this advice on another forum, what do you think?

"Once in a while I encounter the same situation, particularly if I get the parts from AutoZone or Advance. Leave any anti-squeal feature in place or you'll be reminded that you removed them every time you hit the brakes. Best thing to do is to put each pad in a vise horizontally and carefully sand it down with a belt sander with a medium grit belt in it (parallel to the long dimension of the pad). That keeps it pretty flat and even. Don't forget to maintain a bevel on the leading edges of the pads. After doing this, everything fits. Next time, get your parts at someplace like NAPA and they'll fit the first time."
Reply With Quote
  #3  
Old 09-07-2016, 11:57 PM
79Mercy's Avatar
Registered User
 
Join Date: Mar 2008
Location: Florida
Posts: 4,131
If it took that much effort to compressor the calipers then i would have to say they are seized, and should be replaced.

Where is the rest of the hardware, springs are missing.

The pads probably fit tightly because the calipers are not fully compressed
__________________
1985 300TD Turbo Euro-wagon
1979 280CE 225,200 miles
1985 300D Turbo 264,000 miles
1976 240D 190,000 miles
1979 300TD 220,000

GONE but not forgotten
1976 300D 195,300 miles
1983 300D Turbo 175,000 miles

http://i42.photobucket.com/albums/e3...e485-1-2-1.jpg
Reply With Quote
  #4  
Old 09-08-2016, 06:38 AM
optimusprime's Avatar
Trevor Hadlington
 
Join Date: May 2014
Location: Worcestershire in England
Posts: 1,295
I would say one or the other is the wrong part .If the pistons are back as far as they can go.Then get the disc dim , and check the new one if it righ then the pads are wrong. To me the pads look over size.
Reply With Quote
  #5  
Old 09-08-2016, 05:37 PM
Hit Man X's Avatar
I LOVE BRUNETTES
 
Join Date: Sep 2004
Location: FUNKYTOWN
Posts: 9,086
Thumbs up

Well, Meyle makes basically only junk now. I easily suspect oversize rotors and excess run out.

As others pointed out, perhaps you have a seized piston on the caliper.

Do not forget to set bearing end play up front!
__________________
I'm not a doctor, but I'll have a look.

'85 300SD 245k
'87 300SDL 251k
'90 300SEL 326k

Six others from BMW, GM, and Ford.

Liberty will not descend to a people; a people must raise themselves to liberty.
[/IMG]
Reply With Quote
  #6  
Old 09-10-2016, 08:43 PM
Banned
 
Join Date: Dec 2007
Posts: 5,061
Well.....I wasn't too happy when the Myele rotors arrived but it would have cost a small fortune to ship them back. So, decided to ride the tiger and see what happened.

I used a belt sander and managed to take some pad material off the Wagner ceramic brake pads so that the pads now fit easier. Question; I can now turn the rotor but the pads drag a bit.

I'm thinking that I should go ahead and install the new rotor and pads on the left side of the car, replace the brake fluid and pressure bleed the system. Then bed the brake pads in properly using the usual stop and go braking. Or.....should I pull out the pads and shave some more material off so that the rotor can spin freely?
Reply With Quote
  #7  
Old 09-10-2016, 09:26 PM
tyl604's Avatar
Registered User
 
Join Date: Feb 2008
Location: Atlanta, GA
Posts: 3,299
Do you still bed in pads?
Reply With Quote
  #8  
Old 09-11-2016, 08:32 AM
Hirnbeiss's Avatar
ich fahre, also bin ich
 
Join Date: Mar 2002
Location: South Florida
Posts: 1,660
Quote:
Originally Posted by Hit Man X View Post
Well, Meyle makes basically only junk now. I easily suspect oversize rotors and excess run out.

As others pointed out, perhaps you have a seized piston on the caliper.

Do not forget to set bearing end play up front!
This prejudice is easily confirmed or refuted wth a caliper to measure the thickness of the rotor.
__________________
Prost!
Reply With Quote
  #9  
Old 09-13-2016, 11:02 PM
Registered User
 
Join Date: Sep 2004
Location: Seattle
Posts: 1,942
Are the pistons fully seated?

Are the rotors the correct thickness?

Are the pads the correct thickness?

Once you answer these questions then you will have your answer.

Disc brakes have no return spring. Once you drive a bit and stop, if you jack up the wheel it will spin.

__________________
1998 C230 330,000 miles (currently dead of second failed EIS, yours will fail too, turning you into the dealer's personal human cash machine)
1988 F150 144,000 miles (leaks all the colors of the rainbow)
Previous stars: 1981 Brava 210,000 miles, 1978 128 150,000 miles, 1977 B200 Van 175,000 miles, 1972 Vega (great, if rusty, car), 1972 Celica, 1986.5 Supra
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 08:18 PM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2020, 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