E-Class (W212) 2010 - 2016: E 350, E 550

Transfer case disassembly.

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Old 10-08-2018, 06:10 PM
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Transfer case disassembly.

Hi, I'm currently repairing a 2010 E350 4Matic where the joint highlighted in the picture attached is bad. It seems very loose inside the case and I'm wondering how i can disassembly the transfer case, and if i can reach it from there to change it? I've removed the surrounding screws, but it only comes out a tiny bit and then gets stuck. Am I missing something? Would love some guidelines on how to disassemble the transfer case from the transmission as i just need to replace the joint.
Old 10-08-2018, 08:34 PM
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The transfer case is integral to the transmission in these later 4Matic models. My understanding is the entire assembly must be replaced if you are experiencing a problem. Yes, the entire transmission/transfer case. There should be other threads on this around here as this question has been raised before.
Old 10-08-2018, 09:13 PM
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2010 E350 4Matic
Originally Posted by KEY08
The transfer case is integral to the transmission in these later 4Matic models. My understanding is the entire assembly must be replaced if you are experiencing a problem. Yes, the entire transmission/transfer case. There should be other threads on this around here as this question has been raised before.
Well my indy is about to rebuild (replace the bearings) mine. He has rebuilt them for a C300. There is another thread where they have been rebuilt (bearing replacement) Can't speak to the ujoint.

What you can't do is buy another transfer case and put it on your transmission.

Last edited by MBNUT1; 10-08-2018 at 09:18 PM.
Old 10-09-2018, 02:13 AM
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Originally Posted by MBNUT1
Well my indy is about to rebuild (replace the bearings) mine. He has rebuilt them for a C300. There is another thread where they have been rebuilt (bearing replacement) Can't speak to the ujoint.

What you can't do is buy another transfer case and put it on your transmission.

Yes, I'm aware that I can do that but all I need to fix is that u joint. How do I go forward in removing the case? It's stuck. Can't find any posts explaining how to take it off from the transmission.
Old 10-09-2018, 04:26 PM
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2010 E350 4Matic
Originally Posted by slakt
Yes, I'm aware that I can do that but all I need to fix is that u joint. How do I go forward in removing the case? It's stuck. Can't find any posts explaining how to take it off from the transmission.
Don't know would suggest a Mercedes WIS but suspect it doesn't provide any guide to component disassembly
Old 10-16-2018, 11:23 AM
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Any idea how to disassemble this part to replace the joint inside?
Old 10-16-2018, 01:04 PM
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2011 E-350 4Matic Sport
My guess is a combination of pressed bearings and/or circlips. Could be that the bearings are pressed on and the gearset is retained with circlips. Or that gearset is heated and then placed on the shaft.
Short of getting more accurate info you may need to check very closely with light and magnifying glass to verify.
Old 10-16-2018, 02:26 PM
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Have you seen
at around 2:15? Doesn't show how to do the assembly but shows the bearing parts.

Tapered roller bearings are most usually "shrink fit" ie warm up the bearing and freeze the shaft that it will fit onto.You will have to use a puller to separate them from the assembly most like destroying them in the process. If you don't have the proper tools, you could get a transmission shop to do the assembly with you supplying the bearings. Shouldn't cost too much. Don't know how you set the pre-load if any. Questions you need to ask your trans shop before you reassemble.

Anyway, good luck and let us know how it turned out.

Bob

Last edited by mercy-me; 10-16-2018 at 02:30 PM.
Old 10-16-2018, 09:00 PM
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Why do think you have a problem with that part??? I have had several of these on the bench and that component looks like it's a one piece. Are you having noises while driving?

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