The severity of this gyroscopic effect could hardly be due to a dashpot, like I said you could have the pedal perfectly still in any gear part throttle, and as soon as you let off and try to get back in it immediately triggers the oscillations. It seems it may help but this is definitely looseness in the drivetrain somewhere. What about gearbox? I'm lost

There is a guy on 190rev that makes the solid flex disks. If you are getting bucking you need a new rear trans mount. I filled mine with loctites roof flashing glue sealant (polyurethane). No bucking but a lot more noise in the cabin. There is also every other part of course but if the engine is bucking thats where you should be looking.

Now if you are talking about extra movement in the rear end, linkages, rear diff mounts, subcarrier mounts etc.

Considering the whole rear subframe is mounted in rubber, it doesn't seem that far fetched. The rear diff bushings I have now are very close to being hard plastic yet did not translate to much of a difference in NVH in the cabin.

Winmutt, I had a different experience with the trans mount I got from you. I was having an issue with a gusset on the trans tailhousing bumping against the crossmember when I ran over speedbumps, etc... The poly filled mount fixed that right up. Other than that, I wouldn't be able to tell it was in there.

Interesting. I really havent investigated the noise yet. That is good to know. I did use quite a bit more of the stuff on mine :D

Would that be the same part number as this? 124 242 0501

mines an 86 201 and I know the manual mounts are different. That number is for a 124 I was wondering if they are the same.

I pryed with a pry bar gently on a few of these things and I swore this one got a pass but I guess I'll check again. It would make sense.

What about the rear axles? or subframe mounts? probably not since they aren't "inline" with this oscillation...

201.126 parts:
ENGINE SUSPENSION ENGINE SUSPENSION

The # you posted doesn't show up on this page. Is that a trans mount # or motor mount #?

5 speed 124 rear trans mount.
Thanks for the link, that's the only thing about mercs that I hate is there isn't something like realoem or bmw.info

What ???
 

For those of you who are unaware, Mercedes has posted up all the service manuals for our favorite cars on their Star TekInfo website, no need to login at all.

STAR TekInfo

Click, MB Workshop Resources -> Service Manual Library CD/DVD

Here's the direct links to manuals:

124:
Model 124

107:
Model 107

123:
Model 123

126:
Model 126

201:
Model 201

Hope this helps!

.

Thanks for the info, I do have the software with all of the .pdf's so I guess it is providing the same information, I just like bmw.info's/realoem's interface. you can quickly find blown up diagrams with individual part numbers which you can click and see what cars share the parts and if they are available and how much etc etc.

I found the diagram showing the "engine mount" for the rear (why don't they call it transmission..) and it shows the diagram of the part but no part number...

http://img.photobucket.com/albums/v4...ps42b773f5.jpg







http://img.photobucket.com/albums/v4...psbe3a942f.jpg








It looks like I could just order a standard one for a 124 and that would work fine since it's the same height

I called a trusted merc mechanic nearby and he told me he has had several cars come in with that trans mount needing replaced. But he said the only symptoms were vibrations, and not actual back forth oscillations like I am experiencing. I don't know if that is because of the manual gearbox or what? He thinks it is probably some rear end bushings I assume the subframe bushings, I just feel like I would notice those being shot in other ways besides my current symptom. I just need to get this thing on a lift again..