6mt leak

[strokemycocktus]

I have noticed a small leak under the transmission while changing the x-pipe. The cover was soaked and the exhaust mounting bracket was wet. How serious can it be and where should I look for the cause?
Here is a photo of the leak.

[deansbimmer]

Not a very good picture to be able to tell much from. These transmissions can leak from the output seal and the shift shaft seal. I've also seen drain/fill plugs overtightened which cracks the casing enough to cause a small leak.

[strokemycocktus]

Originally Posted by deansbimmer

Not a very good picture to be able to tell much from. These transmissions can leak from the output seal and the shift shaft seal. I've also seen drain/fill plugs overtightened which cracks the casing enough to cause a small leak.

I know the picture isn't the best, but I meant to show that it leaks rather somewhere in the back.
Both of the seals you mentioned are located in the rear, so I guess I'll replace both and hope to stop the leak.
How much work does this involve?

[Lambro]

I'll bet you a lot of money it's the shifter shaft seal

[deansbimmer]

Originally Posted by strokemycocktus

Both of the seals you mentioned are located in the rear, so I guess I'll replace both and hope to stop the leak.
How much work does this involve?

Lots of work. The shift shaft seal leaks in 95 out of 100 6MT's I see, it's the severity of the leak that varies.

I've also seen the case halves leak. That's a transmission out repair for a transmission shop.

[Lambro]

the shifter shaft seal isnt too bad. Remove drive shaft, take the shifter knuckle off, then use a pick very carefully to pry the old seal off and not scratch the bore. then install new seal. If you need pdfs on how to do all this I have them

[strokemycocktus]

Originally Posted by iTsEpic

the shifter shaft seal isnt too bad. Remove drive shaft, take the shifter knuckle off, then use a pick very carefully to pry the old seal off and not scratch the bore. then install new seal. If you need pdfs on how to do all this I have them

Cool, can you pm them to me?
From what I see it would be a good idea to replace some of the shifter bushings "while I'm in there"

To be sure, the part nr is 23128677736?

[strokemycocktus]

Could someone please confirm the part number?

[deansbimmer]

Yes.

https://www.realoem.com/bmw/enUS/sho...diagId=23_0966

https://www.realoem.com/bmw/enUS/sho...diagId=25_0430