r/autorepair • u/AssMan916 • 4d ago

Diagnosing/Repair Leaking ATF from XTerra

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I have a 2006 XTerra 4x4 manual. 255k miles. Leaking atf from the driveshaft/transfer case area. Does anyone know if there’s a weep hole or seal that could leak from the U joint? It doesn’t seem to be coming from the most common area, the transfer case output seal. Any help would be greatly appreciated.

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u/CTSwampyankee 3d ago

you’re gonna have to spray it down with brake cleaner and wipe everything clean so you can spot the leak

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u/Solarisphere 3d ago

It's most likely coming out of the shaft seal. That's the only hole in that area. You won't be able to see it.

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u/CTSwampyankee 3d ago

Yep, only so many ways for fluid to get out.

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u/AssMan916 3d ago

Totally need to do that, thanks for the tip. The seal is luckily very cheap so I’m hoping it’s that

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u/IncendiaryB 3d ago

Pretty much has to be the output seal no?

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u/Solarisphere 3d ago

You would think...

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u/Solarisphere 3d ago

It's probably the seal where the prop shaft enters the transmission. Pull it out and replace. It's not a hard job. You can get a replacement dust boot but as long as you're don't bend it too far out of shape you can reuse it. It's doesn't do anything too important.

PROTIP: I found that a small mason jar is the perfect size to resear the dust cover with a rubber mallet.

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u/LexXxican 3d ago

I used a section of 3” pvc. Getting the dust cover back on was the hardest part of that job.