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#1
02-08-2012, 10:12 AM
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1983 300CD Driveshaft
On my 83 300CD, there is a slight vibration in the body of the car between 40 & 45 mph. The vibration goes away after 45 & is silky smooth. My tech says the univeral joints in the driveshaft need replacing. He said the shaft must be rebuilt. I have already replaced the center support/bearing & the flex disk. Three questions:
1. I am assuming it is not possible for a good shop to replace just the UV joints (like in most cars) and it MUST be rebuilt by a company that rebuilds driveshafts? 2. Is one of the 2 driveshaft parts on the 300CD the same (length) as on a 4 door 300D turbo (same year, etc.)? 3. Tech said usually one of the 2 driveshafts gives the most trouble. Anyone know which one he is talking about? Thanks again! Richard 
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#2
02-08-2012, 11:46 AM
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Well it is the long rear shaft that has the joint. They are a special joint, they can be rebuilt but not easily replaced like the typical "U" joint. It probably could need rebuilding and it might solve your vibration. But it also could be that what you are feeling are power pulses from the engine at that critical speed, (rpm's) Are your engine mounts in good shape. If they are old and messed up, I would replace them first.
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Junqueyardjim Christianity, if false, is of no importance, and if true, of infinite importance. The only thing it cannot be is moderately important. C.S. Lewis 1983 Mercedes W123 240D 4 Speed 285,000 on the road with a 617 turbo, beautiful butter yellow, license plate # 83 240D INDIANA 2003 Jaguar Type X, AWD. beautiful, good mileage, Mom's car, but I won't let her drive it!
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#3
02-08-2012, 12:03 PM
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Might think about the differential mount as well. If it's tired out you could be getting some vibration. If you do the motor mounts do the trans mount as well.
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Andrew '04 Jetta TDI Wagon  '82 300TD ~ Winnie ~ Sold '77 300D ~ Sold
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#4
02-08-2012, 12:40 PM
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I just replace the U-joint on our 80 240D. sent it to a drive line shop that does the MB drive lines. not all shops will do it, and or don`t have the equipment to balance them etc.
The shop replaced the center support bearing, U-joint and the sleve in each end of the shafts. the joint they replaced it with has the clips and a zerk fitting. Charlie
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there were three HP ratings on the OM616... 1) Not much power 2) Even less power 3) Not nearly enough power!! 240D w/auto Anyone that thinks a 240D is slow drives too fast. 80 240D Naturally Exasperated, 4-Spd 388k DD 150mph spedo 3:58 Diff We are advised to NOT judge ALL Muslims by the actions of a few lunatics, but we are encouraged to judge ALL gun owners by the actions of a few lunatics. Funny how that works
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#5
02-08-2012, 04:01 PM
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The Metal around the U-joint Cups are Staked/Mushed in and prevents easy replacement of the U-joint.
In the newer of the threads below some places to send the Drive Shaft to rebuild it are mantioned. (If it actually needs to be rebuilt; have someone else check the Driveshaft Support Bearing.) U-Joint 2005 Can you replace the universal joints????? - PeachParts Mercedes ShopForum My U-joint Repair thread 2011 Drive Shaft U-Joint Is Staked/Crimped In Place, Now What To Do? - PeachParts Mercedes ShopForum My Benz World post with all of the U-joint sources. Another U-Joint / Driveshaft Thread - Benzworld.org - Mercedes-Benz Discussion Forum
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84 300D, 82 Volvo 244Gl Diesel
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#6
02-08-2012, 04:42 PM
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One source that sells OEM parts online had the below.
Part Number 1234104802 Part Name DRIVE SHAFT MSRP $600.00 Online Price $450.00 I do not know what the Shipping would be and the Original Drive Shaft is going to come with a Staked in U-joint. Some of the Drive Shaft Rebuilders do a mod with a replacable U-joint and also install an new Drive Shaft Bearing Support. However, if there is no rebuilder in your area you may end up paying shipping to and from the Rebuilder.
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84 300D, 82 Volvo 244Gl Diesel
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#7
02-08-2012, 11:02 PM
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The charge for my Drive Line, was $300. no shipping, I drove to their shop.
Charlie
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there were three HP ratings on the OM616... 1) Not much power 2) Even less power 3) Not nearly enough power!! 240D w/auto Anyone that thinks a 240D is slow drives too fast. 80 240D Naturally Exasperated, 4-Spd 388k DD 150mph spedo 3:58 Diff We are advised to NOT judge ALL Muslims by the actions of a few lunatics, but we are encouraged to judge ALL gun owners by the actions of a few lunatics. Funny how that works
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