Parts Catalog Accessories Catalog Tech Info Tech Forums
 
  Search our site:    
 Cart  | Project List | Order Status | Help    


Go Back   PeachParts Mercedes ShopForum > Technical Information and Support > Diesel Discussion

Reply
 
LinkBack Thread Tools Display Modes
  #1  
Old 05-13-2012, 04:03 AM
wilburtual's Avatar
240D + 240D = :)
 
Join Date: Oct 2010
Location: Los Angeles,CA
Posts: 183
horrible wheel screech :/ ! any ideas?

1977 240D - while driving home today the rear drivers (i think) wheel started to give a horrible metal grinding/screeching sound !! oh no
its different than a worn out break pad type grind, much more terrible..! I've never messed with wheels/ axle stuff much, so its not a sound i recognize. my first thought was wheel bearings? or something... that needs some lubing..
I took a quick look underneath before it got dark today and found that on the axle where it meets the wheel seems to have a strange wear mark on it - see pic #1 below -- there is an obvious mark wear like it is rubbing or something,, i think? i checked the other rear tire and there is no similar wear marking.
i didnt see anything actually touching it/draggin on it, could this be my source of screeching??

also, while poking around down there i noticed a piece/metal line just hanging under there (in pic i have a red arrow pointing to it..) on the other rear wheel, this same line seems to have a little connector line that goes to the axle, but this side (the screeching side) there is no connector tube. what is this part? and should it just be hanging there un connected??



__________________
1981 240D ... 246k
1977 240D ... 242k
Reply With Quote
  #2  
Old 05-13-2012, 04:21 AM
Stretch's Avatar
...or are we dancer?
 
Join Date: Sep 2009
Location: The Netherlands
Posts: 11,172
The bit that the arrow points to is the anti roll bar connection.

I can imagine that it has been rubbing up against the axle making that mark you show in the first picture.

There anti-roll bars either have a plastic connecting link or a metal one. They are easy to replace - well the biggest trouble you'll probably have is undoing rusted nuts...

Have a look on fastlane for pictures of the bit I mean (Click on Buy Parts above)

Before you go off buying bits, however, I think you should have a good look at the rest of that area and see what else might be wrong. Remove the wheel - have a good look - take more photographs if you are unsure about anything you find.
__________________
1981 W123 300D ~ 100,000 miles / 160,000 km - project car stripped to the bone

1992 W201 190E 1.8 171,000 km - this one should be the daily driver

Don't leave that there - I'll take it to bits!
Reply With Quote
  #3  
Old 05-13-2012, 07:41 AM
vstech's Avatar
DD MOD, HVAC,MCP,Mac,GMAC
 
Join Date: Mar 2006
Location: Mount Holly, NC
Posts: 23,045
the link you need to replace looks NOTHING like the new one,but it's the correct part.



the one on your car has a metal shaft, and metal shield around it, don't worry, it's perfectly fine to use the plastic one.
__________________
John HAUL AWAY, OR CRUSHED CARS!!! HELP ME keep the cars out of the crusher! A/C Thread
"as I ride with my a/c on... I have fond memories of sweaty oily saturdays and spewing R12 into the air. THANKS for all you do!

My drivers:
1987 190D 2.5Turbo
1987 190D 2.5Turbo
1987 190D 2.5-5SPEED!!!

1987 300TD
1987 300TD
1994GMC 2500 6.5Turbo truck... I had to put the ladder somewhere!
Reply With Quote
  #4  
Old 05-13-2012, 04:15 PM
wilburtual's Avatar
240D + 240D = :)
 
Join Date: Oct 2010
Location: Los Angeles,CA
Posts: 183
Quote:
Originally Posted by Army View Post
The bit that the arrow points to is the anti roll bar connection.

I can imagine that it has been rubbing up against the axle making that mark you show in the first picture.
thanks for the info, i assume its best to have one of those on there,,,? !! i'll order on and put 'er on.
could the lack of the sway bar link be causing the screeching noise? i dont really know what the sway bar link does or is for...
__________________
1981 240D ... 246k
1977 240D ... 242k
Reply With Quote
  #5  
Old 05-13-2012, 04:25 PM
Stretch's Avatar
...or are we dancer?
 
Join Date: Sep 2009
Location: The Netherlands
Posts: 11,172
I would personally replace it. However I've read here that some people have done with out it (possibly on those lovely long straight desert roads in the US?). The rear anti-sway / roll bar isn't doing 1/20th of the work the front one does...

(I'm not sure if you're interested in this - I don't mean to be teaching you to suck eggs but there's this link that might be worth looking at http://en.wikipedia.org/wiki/Sway_bar)

I assume that the screeching noise is coming from metal on metal contact - anti-roll bar / or end of rubbing on the axle. I don't know if that is true though - it looks like it from your pictures but this way of diagnosing stuff is a bit limited...

...that's why I want to encourage you to remove the wheel and look critically at the rest of the car / structure / suspension etc in that area. There could be something else wrong (I hope not - but it is best to check).
__________________
1981 W123 300D ~ 100,000 miles / 160,000 km - project car stripped to the bone

1992 W201 190E 1.8 171,000 km - this one should be the daily driver

Don't leave that there - I'll take it to bits!
Reply With Quote
  #6  
Old 05-13-2012, 04:26 PM
wilburtual's Avatar
240D + 240D = :)
 
Join Date: Oct 2010
Location: Los Angeles,CA
Posts: 183
Thanks Army, i'm heading out to take the wheel off now and have a look (fingers crossed) !
__________________
1981 240D ... 246k
1977 240D ... 242k
Reply With Quote
  #7  
Old 05-13-2012, 06:02 PM
Yak Yak is offline
Registered User
 
Join Date: Aug 2009
Location: San Antonio, TX
Posts: 1,711
I'd look on the front side of the axle and see if there's a broken stub of the rear torsion bar mount stuck/flopping in there near the wheel carrier and causing that wear streak.

It's also possible something like a stone got wedged in there. I've had that happen between the brake rotor and the shield. Horrible grinding/squealing noise.
Reply With Quote
  #8  
Old 05-13-2012, 07:07 PM
vstech's Avatar
DD MOD, HVAC,MCP,Mac,GMAC
 
Join Date: Mar 2006
Location: Mount Holly, NC
Posts: 23,045
the loud noise is from the link that's still attached to the spindle hitting the inside of your wheel... when you take off the tire and look closer, you'll find the other half, and if you take it off, the noise will stop. it's not doing much, as army says, but it is doing something. it's CRITICAL on a wagon, as it's the part that tells the SLS what height the body is in relation to the tires, but on a CD/D it's only slightly offsetting the squat from corners... the front is doing the majority of the work.
__________________
John HAUL AWAY, OR CRUSHED CARS!!! HELP ME keep the cars out of the crusher! A/C Thread
"as I ride with my a/c on... I have fond memories of sweaty oily saturdays and spewing R12 into the air. THANKS for all you do!

My drivers:
1987 190D 2.5Turbo
1987 190D 2.5Turbo
1987 190D 2.5-5SPEED!!!

1987 300TD
1987 300TD
1994GMC 2500 6.5Turbo truck... I had to put the ladder somewhere!
Reply With Quote
  #9  
Old 05-13-2012, 08:00 PM
wilburtual's Avatar
240D + 240D = :)
 
Join Date: Oct 2010
Location: Los Angeles,CA
Posts: 183
ok, i took the wheel off, and it looks like the sway bar link completely ripped off, and fell off, no loose end attached to the wheel. so im thinking maybe it was hanging there for awhile and causing that wear mark on the axle, but has since fallen off.. :




when i turn the wheel a bit, i heard the screeching noise, i took a video, watch it here:

IMG 4616 - YouTube

i then sprayed a bit of pb blaster in this seam/joint right behind the wheel..:



and then the screeching went away... so, what is that joint? what do i need to do to make it stop squealing

also, on a side note, i had this up on the standard jack, but to do any work, i would want to jack stand it, but where do i put a jack stand on the rear like this?

there are 2 places i thought maybe, but wanted to check to be safe:



__________________
1981 240D ... 246k
1977 240D ... 242k
Reply With Quote
  #10  
Old 05-13-2012, 08:08 PM
vstech's Avatar
DD MOD, HVAC,MCP,Mac,GMAC
 
Join Date: Mar 2006
Location: Mount Holly, NC
Posts: 23,045
the blue arrow points to a safe place to put the stand.
__________________
John HAUL AWAY, OR CRUSHED CARS!!! HELP ME keep the cars out of the crusher! A/C Thread
"as I ride with my a/c on... I have fond memories of sweaty oily saturdays and spewing R12 into the air. THANKS for all you do!

My drivers:
1987 190D 2.5Turbo
1987 190D 2.5Turbo
1987 190D 2.5-5SPEED!!!

1987 300TD
1987 300TD
1994GMC 2500 6.5Turbo truck... I had to put the ladder somewhere!
Reply With Quote
  #11  
Old 05-13-2012, 11:41 PM
wilburtual's Avatar
240D + 240D = :)
 
Join Date: Oct 2010
Location: Los Angeles,CA
Posts: 183
ok,thanks VS, that where i'll jack stand it then

anyone have insight on what that joint is that i lubed to make the squeal go away? and how i make it permanently go away?
__________________
1981 240D ... 246k
1977 240D ... 242k
Reply With Quote
  #12  
Old 05-14-2012, 04:06 AM
Stretch's Avatar
...or are we dancer?
 
Join Date: Sep 2009
Location: The Netherlands
Posts: 11,172
I'm not 100% sure where you intend to put the jack stand in this picture



The blue arrow seems to be pointing in between the bolt heads on the floor pan (towards the front of the car) and the big bolt that holds the sub frame in place (towards the rear of the car) => if that is the case then you are potentially going to damage that pressed steel brace. You are better off placing the axle stand right under the big bolt that holds the sub frame in place.

If you bend the steel brace you can pull the sub frame out of alignment.

EDIT - here's a picture of the good place



Stolen from the DIY link given in the next post
__________________
1981 W123 300D ~ 100,000 miles / 160,000 km - project car stripped to the bone

1992 W201 190E 1.8 171,000 km - this one should be the daily driver

Don't leave that there - I'll take it to bits!
Reply With Quote
  #13  
Old 05-14-2012, 04:13 AM
Stretch's Avatar
...or are we dancer?
 
Join Date: Sep 2009
Location: The Netherlands
Posts: 11,172
Quote:
Originally Posted by wilburtual View Post
...
anyone have insight on what that joint is that i lubed to make the squeal go away? and how i make it permanently go away?
OK I'm really glad you pulled the wheel off and did some more investigative work. The screeching seems to be coming from the rear wheel bearing rather than from the anti roll bar rubbing on the outside of the axle can.

The joint where you sprayed the oil is simply the place where the axle fits to the trailing arm / rear wheel hub. That bit shouldn't squeak. I think you will probably need to remove the axle to see what has gone wrong.

Before you do that though try pulling the wheel in a lateral direction (away and towards the other back wheel) and see if you can feel any play.

Also check to make sure that the bolt that runs through the hub into axle is in place



(Picture stolen from the first DIY link below)

DIY links that show you what you are getting yourself into include

PeachPartsWiki: Replacing the Rear Axles (I think this probably will be necessary)

PeachPartsWiki: Replacing the Rear Wheel Bearings (I hope this won't be necessary)
__________________
1981 W123 300D ~ 100,000 miles / 160,000 km - project car stripped to the bone

1992 W201 190E 1.8 171,000 km - this one should be the daily driver

Don't leave that there - I'll take it to bits!
Reply With Quote
  #14  
Old 05-14-2012, 09:00 AM
cho's Avatar
cho cho is offline
diesel power
 
Join Date: Dec 2011
Location: europe
Posts: 701
Quote:
Originally Posted by vstech View Post
the link you need to replace looks NOTHING like the new one,but it's the correct part.



the one on your car has a metal shaft, and metal shield around it, don't worry, it's perfectly fine to use the plastic one.
mine looks like on attached pic,I have bought 2 plastic white ones but
my indy did not want to change it as he thought those are much weaker...??

for the plastic one SWAG clearly stated that is fully compat. with 87 500sec ..

..
Attached Thumbnails
horrible wheel screech :/ !  any ideas?-sway500sec.jpg  
__________________
w126 500SEC gen II euro, powered by OM617 turbo stolen from 84 300SD 2.88 diff,EGR blinded
next wish/project: w114 coupe OM603 powered
Reply With Quote
  #15  
Old 05-14-2012, 12:02 PM
Stretch's Avatar
...or are we dancer?
 
Join Date: Sep 2009
Location: The Netherlands
Posts: 11,172
Quote:
Originally Posted by cho View Post
mine looks like on attached pic,I have bought 2 plastic white ones but
my indy did not want to change it as he thought those are much weaker...??

for the plastic one SWAG clearly stated that is fully compat. with 87 500sec ..

..
Do you not have the anti-squat system with the aluminium trailing arms then?
__________________
1981 W123 300D ~ 100,000 miles / 160,000 km - project car stripped to the bone

1992 W201 190E 1.8 171,000 km - this one should be the daily driver

Don't leave that there - I'll take it to bits!
Reply With Quote
Old 05-14-2012, 12:02 PM
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 Off
Trackbacks are On
Pingbacks are On
Refbacks are On



All times are GMT -4. The time now is 12:01 PM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0
Copyright 2011 Pelican Parts - Posts may be archived for display on the Peach Parts or Pelican Parts Website -    DMCA Registered Agent Contact Page