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Old 01-12-2003, 02:53 PM
Registered User
Join Date: Nov 2002
Location: Nebraska
Posts: 58
Question Suspension or brakes

Yesterday I noticed what sounded like my left rear brake dragging when taking off from a stop. When I got home I felt the rear wheel and it was very warm, not hot. This AM I pulled both back wheels and found a part that had come loose off of both wheel hubs. The part in question is a flat arm about a foot long that goes towards the back of the car and connects to a rod about 3/4" diameter that runs behind the rear axle up on the frame and goes across the car to the other side. Both ends connect to the back of the wheel hub (one on each side of the car) with a sort of eye bolt. The eye bolt connects to the lower inside front of the wheel and has a sort of swivel there that appears to do nothing else. I find nothing else connected to this rod and can move it by hand, since it is no longer connected to the hub where it is suppose to be connected. What is this rod and what does it do? Does it have anything to do with the brakes? I feel I still have a brake problem because it does smell bad and there is considerable amount of brake dust on the wheel and tire. The car is a 1975 450SL.
Thanks for any info as I can find a picture of what this is in my Chilton book, however no mention of it.
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Old 01-13-2003, 01:11 AM
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Join Date: Jul 2001
Location: SoCal
Posts: 1,303
Sway bar - the links broke loose. Possibly subframe loose causing damage - due to collapsed subframe mounts?

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Old 01-13-2003, 01:19 AM
haasman's Avatar
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Join Date: Jun 2001
Location: San Francisco, CA
Posts: 3,096

... but your brake question:

-Did you check your the caliper? Any leaks?

-Is the disk discolored?

-Are the pads good?

-Is the disk under size (pronounced ridge on the outer edge)?

-Have the rear calipers ever been replaced?

-Have the rear brake lines ever been replaced?

You could try using the brake pads and squeezed them back into the caliper. You actually don't have to remove the pads to do this. Try it several times. This cleans and lubes the caliper puck/piston.

If the rear calipers have never been done, 27 years is a long time for brakes.

Let us know ....

'03 E320 Wagon-Sold
'95 E320 Wagon-Went to Ex
'93 190E 2.6-Wrecked
'91 300E-Went to Ex
'65 911 Coupe (#302580)
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Old 01-13-2003, 02:01 AM
Registered User
Join Date: Dec 2002
Location: monclova coahuila mexico
Posts: 23
ok sway bar LINK, the bar is mounted to car in a bushing's you got to replace the bushing's too,look for original's at benz dealer.
the sway bar link's, MOOG have a good link at lower price and work perfect. I always prefer to buy RUBER'S or seal's at benz.
The link comes with new screws.
- check the sub frame mounts too
if you don't know where the link fits. send me a mail and I will send you a photo.
good luck Doug . sorry grammatic's.
Alberto Mendez
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Old 01-15-2003, 08:31 AM
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Join Date: Nov 2002
Location: Nebraska
Posts: 58
Suspension or brakes

Thanks to all of you for your information and help. Everything you have told me about is as you say. The bushings on the sway bar are indeed worn out and gone. The brake pads are bad and it has ground into the drivers side disc so it will need to be replaced as well. The car only has 75000 miles on it and the brakes appear to be orginal so it is indeed time for new ones. A little work here and there just make these cars funnier to drive. In my location you do not see many MBs so it is a head turner to start with.
Thanks again for all the help.
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