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#1
11-05-2013, 12:26 PM
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W126 Periodic Vibration Source Solved
RE: 300 SDL Vibration at approx. 30 mph & then again at 55 through 65 mph.
Bottom line: Seemingly insignificant notch in U-Joint was the source. And I mean barely detectable / felt when I flexed it with it out of the car. Had the drive shaft rebuilt at Oceanside Driveline in Oceanside CA. $400 including all new MB parts (center bearing & carrier, end bearings / bushing, u-joint, & balance). After months of searching and studying posts, and replacing motor mounts, trans mount, flex plates, center bearing / carrier, differential mounts, new tires, Bilstien shocks, rebuilt front end, MB alignment, shimming center carrier, etc. the vibration was still there. No joy......Finally just bit the bullet and took the drive shaft in to these guys who specialize in MB, BMW, etc. Popped the shaft it back in and now at 387K+ miles she rides smooth as I remember when new. To be honest I had forgotten how smooth these cars can be. Once again....Thank you members for your assistance along the way!
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 1986 300SDL 440,xxx 
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#2
11-05-2013, 01:53 PM
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I had a seat of the pants oscillating vibration/rumble from about 35 mph up. Rebuilt ds solved it. When I took ds out, it was noticeably notched. I could feel it catching every direction I moved it. It was great to finally experience the smooth ride I knew it was supposed to have. My ujoint lasted about 275k.
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1984 300D w/ 370k mi. daily driver 1994 7.3 idi non-turbo 180k mi.
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#3
11-05-2013, 01:57 PM
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Good to know - thanks for passing this information on (Posting is also a lazy bookmarking)
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1992 W201 190E 1.8 171,000 km - Daily driver 1981 W123 300D ~ 100,000 miles / 160,000 km - project car stripped to the bone 1965 Land Rover Series 2a Station Wagon CIS recovery therapy! 1961 Volvo PV544 Bare metal rat rod-ish thing I'm here to chat about cars and to help others - I'm not here "to always be right" like an internet warrior  Don't leave that there - I'll take it to bits!
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#4
11-06-2013, 07:13 AM
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I had same problem, same solution at 320,000.
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 Present 1987 300SDL 1991 300SL 1990 560SEL 2001 ML320 Past 1969 200D 1979-82 1983 300SD 1984-85 1972 250C 1982-02 1995 S350 2011 1997 S320 2012
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#5
11-07-2013, 02:30 AM
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My local rebuilder said he cannot get replacement U-joints. And I thought I'd read that MB only sold shafts for my '83. Or maybe the issue was centering the U joint in the yoke. I guess I'll have to look into this again.
__________________
When life gives you lemmings... make lemmingade.
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#6
11-07-2013, 11:58 AM
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Quote:
There is a U-joint available for the W123s and several Years ago when I replaced the U-joint on Mine it was about $20 each for the new U-joint. There is an old thread on replacing the U-joint U-Joint 2005 http://www.peachparts.com/shopforum/showthread.php?t=124491&highlight=U-joint My U-joint Repair thread 2011 http://www.peachparts.com/shopforum/showthread.php?t=293976 My Benz World post with all of the U-joint sources. Has some sources of the U-joint in it. http://www.benzworld.org/forums/w123-e-ce-d-cd-td/1581728-another-u-joint-driveshaft-thread.html#post4677977
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84 300D, 82 Volvo 244Gl Diesel
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#7
11-07-2013, 01:44 PM
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Quote:
Thanks for posting the links.
__________________
When life gives you lemmings... make lemmingade.
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