Manual transmission bearings

[john collins]

I am completely restoring my 1965 230sl and the manual transmission internals are all in very good shape, but since I am here, I thought I would replace the bearings.   It looks like they were replaced once before, as the identifying numbers on them appear “after-market”.  I can list those after market numbers, but I would prefer to find “correct” ones.

I do not have a parts manual to look up the actual part numbers - can anyone assist, so I can provide original part numbers to the Classic Center?

Here is a photo of the transmission, showing the tag…. 

[Benz Dr.]

I've used FAG bearings but I've also used others. I think any reputable bearing supplier could get you what you need for half the price of MB parts. Besides, MB doesn't make those parts, they just resell them.

[john collins]

These are the aftermarket bearings.
SKF 361727D (1)
NDH 3306 (1)
FAFNIR 305KDDC3 (2)

[wjsvb]

Agree with the good Doctor!  Name brand bearings (FAG, NDH etc.) are good: you can trace the part number to catalogs or mfr website and see construction specs if you want to confirm.   

[Cees Klumper]

The tag on the trans indicates that it is a replacement unit.

[sandcrab59]

Cees is correct. All my manual transmissions, gas and diesels do not have tags.
Mine are all originals.

[Shvegel]

Cees just gave you a big clue.  Your bearings were most likely changed by Mercedes when they rebuilt your gearbox.  I am sure the same bearings will be fine.

[ja17]

You can also bench test your old bearings. Clean them completely with solvent.
Lightly pinch them one at a time in the jaws of a bench vice (outside to outside). Rotate the inner race with your fingers. if any rough or flat spots are felt then the bearing is failing and should be replaced. In my case I automatically replace all bearings anyway since labor cost is most critical. Testing the old bearings however will confirm failing and noisy bearings when trying to diagnose problems with the unit.