1977 VW Automatic leaks transmission fluid from bottom

[Mitchdollery]

I have a 1977 automatic bus. It is leaking fluid from a small hole in the bottom of the transmission. I have not been able to find too much information on this but I am thinking this is the overfill drain. I have checked fluid level and it is not overfilled. Fluid also looks dirty, not completely red. Transmission guy tells me he thinks it is the torque converter seal, but I think it could be the seals between the transmission and the differential . Any help would be greatly appreciated.
Thanks

[Balmoral1958]

Pictures would be helpful - I have a '77 with auto - no "holes" at the bottom of my tranny.

Check the differential oil - how do I say this correctly - stick your finger in the hole and see what color the oil is - should be "pure transmission oil" with that beautiful aroma - if it has transmission fluid in it then the gasket between the two potentially needs to be replaced...

Alternatively..

If the ATF is dirty - change it, the ATF filter and the diff oil.

Warm it up - check the ATF level. Then give it a good run and see if the diff oil is still contaminated. Mine had sat for a number of years and now runs really well after replacing the fluids and the ATF filter.

If it is you will have to pull the tranny - note you have to pull the tranny and the engine together.
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2x 1974 Karmann Ghia Coup
1984 Citroen 2CV
1956 Citroen 2CV
!984 911 Targa

[danfromsyr]

the small weep hole in the bottom middle of the AT transmission goes up into the air gap between the Differential and the transmission section.
it's there to prevent fluids from mixing..

you will indeed need to R&R the transmission to remedy this.
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[Balmoral1958]

cant see any weep hole but... its worth changer the fluids etc first vs pulling the lot..
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2x 1974 Karmann Ghia Coup
1984 Citroen 2CV
1956 Citroen 2CV
!984 911 Targa

[danfromsyr]

located here
https://www.thesamba.com/vw/forum/viewtopic.php?t=682180

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[Balmoral1958]

Ah!! This one:

_________________
2x 1974 Karmann Ghia Coup
1984 Citroen 2CV
1956 Citroen 2CV
!984 911 Targa

[Mitchdollery]

Yes that is the hole where I have leaking from. Only leaks when engine is running, and it’s a pretty substantial leak. Appears to be transmission fluid.

[Mitchdollery]

I have been told I can remove the transmission without removing the engine. Is that correct?

[Balmoral1958]

According to the Haynes manual it should be removed as one with the engine but I will defer to the experts in the forum.
_________________
2x 1974 Karmann Ghia Coup
1984 Citroen 2CV
1956 Citroen 2CV
!984 911 Targa