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BMW 3-Series and 4-Series Forum (F30 / F32) | F30POST > Technical Forums > xDrive All-Wheel Drive Discussions > Transfer case jerkness and knocking
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      04-20-2023, 03:05 PM   #1
passanger
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Transfer case jerkness and knocking

Hi folks,

Not sure if this was part od the one of existing threads, i coulnd't find ti.

I've wrote in the "wheels" thread about transfer case issue.

https://f30.bimmerpost.com/forums/sh....php?t=1870087

Also, i messured today thread dept, fronts 5.8mm and rears 5.1mm

Does anyone have such a experience?

Thanks
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      05-18-2023, 01:48 PM   #2
Wolfram23
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I've put 230,000 km on my 335i xdrive (~320,000 km on the car now), I have staggered summer tires and I just put my 3rd set of new tires on them. I have square setup in winter (2nd set).

My t-case failed at around 300,000 km, in my case it started as a rubbing sound (I thought maybe a stick was sometimes rubbing a tire) and eventually started to make a metallic clink. After replacement with a used t-case, I've already put ~20,000 km on it with no issues.

I can't say I experienced jerkiness, though recently replacing my boost solenoid fixed a bit of a surging feel (like a sine-wave) as boost fluctuated.
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      06-24-2023, 02:33 PM   #3
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Does it happen at low speeds only?
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      12-28-2023, 11:44 AM   #4
Dylan.x
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When I let of the clutch is 1st gear / reverse / or change from 3rd to 2nd I feel a knock under the front seats.

I've had a look and the driveshaft has some rubbing marks on it.

Anyone have any idea what it could be? Guibo looks OK, haven't checked centre bearing for play yet. Worthwhile checking Tcase oil? Praying its not the Tcase
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      01-02-2024, 08:05 AM   #5
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^ It could be the rear transfer case / transmission mount bushing. That's really all there is that suspends the transmission. It's one bolt going through that one bushing in the rear on the one side and that's it. If that goes bad it can clunk around. Take a look at that bushing and see if it's torn. I replaced mine around 50K miles and it did have some slight tears to it. If both of those sections are completely torn it probably would clunk.
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      02-10-2024, 06:22 AM   #6
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Quote:
Originally Posted by Dylan.x View Post
When I let of the clutch is 1st gear / reverse / or change from 3rd to 2nd I feel a knock under the front seats.

I've had a look and the driveshaft has some rubbing marks on it.

Anyone have any idea what it could be? Guibo looks OK, haven't checked centre bearing for play yet. Worthwhile checking Tcase oil? Praying its not the Tcase
Have the same problem. Please, tell me if you can find the solution
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