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#1
07-24-2011, 11:54 AM
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Bad flex disk driving home
Friday night on my way home from dinner I started to feel a bad vibration at 70mph. I pulled off the road and looked under, could not see anything with a flashlight. I decided to try and limp it home but after hitting 35mph the vibration returned and I noticed the gear shift moving. I pulled over and called a friend to tow me home. After getting it up on a lift, I seen the damage. Front flex disk destroyed and the center bearing support gone. The disk held together long enough to save damage to the tunnel.
http://img.villagephotos.com/p/2010-2/1353273/IMG_20110724_111957.jpg http://img.villagephotos.com/p/2010-2/1353273/IMG_20110724_112020.jpg http://img.villagephotos.com/p/2010-2/1353273/IMG_20110724_112058.jpg
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 85 300CD Gramps 390K 89 190D Baby 322K 93 300D Grumpy 176K 99 SLK230 Last edited by whunter; 07-25-2011 at 03:35 PM. Reason: attached pictures 
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#2
07-24-2011, 12:15 PM
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Yeah, you may get a few more miles out of it, but not likely
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1977 300d 70k--sold 08 1985 300TD 185k+ 1984 307d 126k--sold 8/03 1985 409d 65k--sold 06 1984 300SD 315k--daughter's car 1979 300SD 122k--sold 2/11 1999 Fuso FG Expedition Camper 1993 GMC Sierra 6.5 TD 4x4 1982 Bluebird Wanderlodge CAT 3208--Sold 2/13
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#4
07-24-2011, 12:22 PM
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If that let loose at speed it literally could have ripped through the sheet metal of the transmission tunnel and did some real damage.
Getting it towed the rest of the way was a wise choice.
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Proud owner of .... 1971 280SE W108 1979 300SD W116 1983 300D W123 1975 Ironhead Sportster chopper 1987 GMC 3/4 ton 4X4 Diesel 1989 Honda Civic (Heavily modified) --------------------- Section 609 MVAC Certified --------------------- "He who fights with monsters might take care lest he thereby become a monster. And if you gaze for long into an abyss, the abyss gazes also into you." - Friedrich Nietzsche
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#5
07-24-2011, 12:32 PM
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Nasty
 still at least no harm done!... so glad I finally got round to doing mine yesterday! Did you have any warning it was going or did it just let go out of the blue? Mine was 'clunking' a little when going in and out of 'N', and a little bit on downshifts. All the steel inserts were loose but the rubber looked fairly good though....next time I'll replace them as soon as I notice anything at all! cheers!
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 cheers!!
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#6
07-24-2011, 12:51 PM
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Dang 'ol. You're lucky it didn't give a way on the highway. I bought my 240 after the PO blew the front one out at about 30mph.
One the 123's the centering cone is a replaceable part. You drill a hole through the cone and drive a rod through then hammer wedges between the rod and the flanges of the shaft, it will come right out. Then you hammer or press in a new one. Before  After 
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Andrew '04 Jetta TDI Wagon  '82 300TD ~ Winnie ~ Sold '77 300D ~ Sold
Last edited by whunter; 07-25-2011 at 03:39 PM. Reason: attached picture
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#7
07-24-2011, 02:04 PM
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With what looks to be worn out spots...
You may have a vibration problem going into the future.. and if those were there before...may have been what caused this failure. That part needs to be balanced before putting it back in....
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1980 240d , chain elongation, cam marks reference: http://www.peachparts.com/shopforum/showthread.php?threadid=10414 http://www.peachparts.com/shopforum/diesel-discussion/305365-9-degrees-chain-stretch.html evap fin cleaning: http://www.peachparts.com/shopforum/showthread.php?t=156207&highlight=evaporator A/C thread http://www.peachparts.com/shopforum/diesel-discussion/297462-c-recommendations-mb-vehicles.html
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#8
07-24-2011, 02:13 PM
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I hope you marked the ends before you pulled the splines apart...
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John HAUL AWAY, OR CRUSHED CARS!!! HELP ME keep the cars out of the crusher! A/C Thread "as I ride with my a/c on... I have fond memories of sweaty oily saturdays and spewing R12 into the air. THANKS for all you do! My drivers: 1987 190D 2.5Turbo 1987 190D 2.5Turbo 1987 190D 2.5-5SPEED!!!  1987 300TD 1987 300TD 1994GMC 2500 6.5Turbo truck... I had to put the ladder somewhere!
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#9
07-24-2011, 02:32 PM
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Quote:
The front shaft had what looks like a saw mark in it so I replaced the entire shaft from the parts car. I didn't pull the shafts apart, just replaced everything. The parts car had new disks and bearing installed by the dealer 2 years ago.
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85 300CD Gramps 390K 89 190D Baby 322K 93 300D Grumpy 176K 99 SLK230
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#10
07-24-2011, 02:34 PM
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Quote:
I didn't have or notice any vibration before this. I don't know if the dealer balanced the shaft I put in or not. Is there a way to tell ?
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85 300CD Gramps 390K 89 190D Baby 322K 93 300D Grumpy 176K 99 SLK230
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#11
07-24-2011, 03:11 PM
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LOL. you did notice a catastrophic failure though... right ?
If that was wearing... and was off enough to cause the rest of it to wear enough then that thing with the three holes in it may have been the cause of this whole thing... On your model car I have no manuals... and the shaft itself is not what I am referring to... since you did feel vibration before they probably did balance it... that is SOP...
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1980 240d , chain elongation, cam marks reference: http://www.peachparts.com/shopforum/showthread.php?threadid=10414 http://www.peachparts.com/shopforum/diesel-discussion/305365-9-degrees-chain-stretch.html evap fin cleaning: http://www.peachparts.com/shopforum/showthread.php?t=156207&highlight=evaporator A/C thread http://www.peachparts.com/shopforum/diesel-discussion/297462-c-recommendations-mb-vehicles.html
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#12
07-24-2011, 04:22 PM
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THAT was a Catastrophic Propeller Shaft System Failure!
Howeveah, The Car Gods allowed you to ESCAPE the Results/Pain.
(Other than to the Wallet,of replacing the Driveshaft inToTal) PaJon, You are this Month's Most Lucky Mercedes Owner (to date) ! How BAD is the Suspension on that W124 ? (That you couldn't FEEL that? Sooner. ) OR Are your tire tread separation VIBRATIONS masking everything else except the 350 Db Stereo output? BD300TD, The Vibration Dampner mounted on the Driveshaft is DESTROYED.
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'84 300SD sold 124.128
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#13
07-24-2011, 04:22 PM
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That amout of wear on the bolts had to be happening for a long time. Last time I wa under the car was back in Feb. and everything looked fine. I just can't believe that I didn't feel anything.
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85 300CD Gramps 390K 89 190D Baby 322K 93 300D Grumpy 176K 99 SLK230
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#14
07-24-2011, 04:25 PM
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Quote:
 The suspension is good and tight, replaced almost all the rubber under it last year.
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85 300CD Gramps 390K 89 190D Baby 322K 93 300D Grumpy 176K 99 SLK230
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#15
07-24-2011, 04:35 PM
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Yeah, Well
[Incredible AND Terrifying,If as you say, Calamity can Avisit with so little notice.]
Moi, 186K (Allegedly) Both Flex discs and the Center Support Driveshaft Bearing System LOOK good. BUT... I've got Two brand New Flex Discs and a New center Support Bearing (In Boxes) Eyeballing me right now. I Does Believe we Be Removin the Temptation from The Lord High Murphy's Interest.
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'84 300SD sold 124.128
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