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#1
03-08-2009, 06:33 PM
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W123 grinding noise from front wheel on turns
This emerged in my brake caliper thread but I've decided to bounce it into its own topic. After replacing both front calipers, I noticed a grinding/grating sound coming from the right front wheel when turning the steering wheel. Makes noise with any turn of the wheel, left or right. I re-checked the calipers and surrounding paraphernalia and nothing is at all loose or out of place. I did not, that I know of, hit or bump anything else behind the wheel during my work. I did notice that the tie rod ends are in very bad shape, with visible cracks in the boots. The noise was not noticeably present before I did the calipers, but I thought maybe having the car up on jackstands for a couple days may have had some effect on the already-shot tie rods.
I need to do a more thorough troubleshooting, but I won't have a buddy to help me do so until Tuesday, so I thought I'd get some preliminary ideas. Does this sound like the tie rod may be the culprit? I'm hoping so, because that's a job I can do (Coming soon to a forum near you: a thread entitled "240D tied rod end won't budge" ...  ), and was planning on doing anyway.Adding addition info, maybe useful: I did notice the right wheel looks like it has excessive toe out (bottom of wheel sticks out). I also jacked that side up and could not find any glaring oddities in wheel play. The wheel turns smoothly by hand. The noise did also occur going over speed bumps, but not as pronounced as when turning the wheel.
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1987 300D, arctic white/palomino--314,000 miles 1978 240D 4-speed, Euro Delivery, light ivory/bamboo--370,000 miles 2005 Jeep Liberty CRD Limited, light khaki/slate--140,000 miles 2018 Chevy Cruze diesel, 6-speed manual, satin steel metallic/kalahari--19,000 miles 1982 Peugeot 505 diesel, 4-speed manual, blue/blue, 130,000 miles 1995 S320, black/parchment--34,000 miles (Dad's car) Last edited by BodhiBenz1987; 03-08-2009 at 08:19 PM. 
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#2
03-08-2009, 10:33 PM
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I had horrible noise especially on tight right turns and it ended up being my engine mounts......
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#3
03-08-2009, 10:42 PM
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How are your upper control arm bushings? and sway bar bushings? I would say wheel bearings too loose and grinding on tight turns. The toe out is usally caused by UCA bushings being worn. When I bought Myrtle, both his front tires had huge wear on the sides of the tires, a quick look revealed that the UCA bushings had turned into black crumbley powder. Upon replacing the bushings, my bad toe out is gone.
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#4
03-08-2009, 10:53 PM
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Quote:
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1987 300D, arctic white/palomino--314,000 miles 1978 240D 4-speed, Euro Delivery, light ivory/bamboo--370,000 miles 2005 Jeep Liberty CRD Limited, light khaki/slate--140,000 miles 2018 Chevy Cruze diesel, 6-speed manual, satin steel metallic/kalahari--19,000 miles 1982 Peugeot 505 diesel, 4-speed manual, blue/blue, 130,000 miles 1995 S320, black/parchment--34,000 miles (Dad's car)
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#5
03-08-2009, 11:18 PM
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It's the lower ball joint or as mercedes calls it the support joint. The rubber boot goes away after 25 years and then the dirt and grit gets in there and it gets rusty. Initialy it would be basically frozen but as you drive the car it loosens up and starts to creak. If you turn the wheel while your friend squirts some wd40 into the socket of it and the sound stops then there's your culprit.
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1982 240D auto 1978 300CD auto 1985 300D auto 1983 300TD auto 1984 Porsche 944 5 speed 1973 Opel GT 1900 4 speed 1967 Chevy C30 350 Sm420 1973 Mustang Grande Convertible 302 C4 1981 VW Pickup 1.6D Turbo 5 speed 1983 Rabbit 1.6D Factory Turbo 5 speed Plus parts vehicles... 
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