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      10-22-2016, 12:14 AM   #1
kry226
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Drives: 2018 X5 xDrive35i M-Sport
Join Date: Aug 2016
Location: Pennsylvania

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Failed Transfer Case Fluid Change

At my wits' end.

I attempted a set of drive train fluid changes yesterday (6HP transmission, F/R differentials and transfer case).

The transmission and diff fluid changes actually went pretty well... and then I hit the transfer case.

My 35i has the ATC35L transfer case with no drain plug (like the rear diff). OK, no problem. I was prepared for that and had a suction pump handy, but I COULDN'T GET THE TUBE DOWN INTO THE CASE! Within an inch or so, you run into the wall of the case or other internal structures. We even tried stepping down in tube diameter... NO GO.

We were able to skim about 150-200 ml out of the case but that's it.

So, what am I doing wrong? And is there a better way to completely replace the fluid?
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2018 X5 xDrive35i M-Sport - Traded
2013 X1 xDrive35i - Sold
1986 320i - Sold
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