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#1
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300SDL vibration at higher speeds
My SDL is not much fun to drive above 60mph. The car gets a certain vibration which is not from the wheels I believe. If I hit the gas at 60mph it is vibrating very much but when I get off the gas at the same speed it is more or less silent. I was thinking fist it could be a badly balanced drive shaft... but then it should vibrate also when I am getting off the gas and not only if I hit it?
What are your experiences with the SDL? I was driving the 6.9 now for some time and this car is just so smooth and silent in comparison. Martin Last edited by werminghausen; 09-06-2015 at 08:09 PM. |
#2
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I think half shafts are something which can vibrate under load but much less or not at all without....
Also check your center driveshaft bearing...
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1980 240d , chain elongation, cam marks reference: http://www.peachparts.com/shopforum/diesel-discussion/10414-help-i-need-check-stretch.html http://www.peachparts.com/shopforum/diesel-discussion/305365-9-degrees-chain-stretch.html evap fin cleaning: http://www.peachparts.com/shopforum/diesel-discussion/156207-photo-step-step-post-showing-w123-evaporator-removal-1983-240d-1982-300td.html?highlight=evaporator A/C thread http://www.peachparts.com/shopforum/diesel-discussion/297462-c-recommendations-mb-vehicles.html |
#3
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This is a great excuse to check out the flex disks. You don't want one letting go. The disk stays with the shaft and you only need to remove 1/2 of the bolts. Disks should be replaced if they have any cracks in them.
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85SD 240K & stopped counting painted, putting bac together. 84SD 180,000. sold to a neighbor and member here but I forget his handle. The 84 is much improved from when I had it. 85TD beginning to repair to DD status. Lots of stuff to do. |
#4
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I just got a 240D and had a similar issue. While looking at the flex discs I noticed one of the bolts was loose. I snugged it up and it's much better. Just in case I bought new discs and center bearing and transmission mount. I'm going to work on those this weekend if it's not 100 degrees in the garage.
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#5
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Thanks for the input. I'll check the flex disc and center driveshaft bearing for sure.
I also have a weird noise (acoustical...not a vibration) when I am coasting and the car is slowing down close to a stop. The noise is weird..metallic... as if a bearing is grinding. Could that be a central bearing? Martin |
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