Unknown seal on transmission

Good afternoon,I love this site,I've rarely had to ask a question, normally I can find the answer by looking through previous threads, but I think I have one that I can't find any info on and I've posted a picture below. It appears to be a seal, with the end of a shaft sticking out, it's located on the driver side housing of my transmission, a few inches above the pan, if you look in the picture you can see it's diagonal from a sensor that's mounted above it. I changed my oil today and noticed there's some transmission fluid leaking from the seal with what looks like a shaft sticking out the side. I went to Toyota and they were able to locate the hole in the diagram where this is but there's absolutely no asterisk no description no nothing of what this hole is with a seal in it and a shaft sticking through it. Does anyone have any idea what this is? I have a standard crew cab tundra, two wheel drive automatic transmission with the 4.0 V6. Their last comment to me is they believe I would have to replace the whole transmission to get that seal. I think with a little bit of research and help from this forum, I think we can figure it out.Jerry

 

Weird. Almost looks like it should be a fill plug.

Don't see a ton of members with the 4.0L ariund here, so don't be surprised if you hear crickets.

Might consider a 4runner forum if you don't get a response here. I believe that drivetrain is much more common in the runners.

 

COTundie,it's also the Tacomas drivetrain.Preciate the response.The fill plug is at the top.Very perplexed

 

Shift Shaft Seal!

 

Thank you AZEric. For whatever reason it's not showing it on the diagram when I give them my VIN number. By any chance do you know if the seal can be replaced without disassembling the transmission or replacing the transmission? This truck's been a great truck since the day I bought it brand new off the lot, but it seems like everything that needs to be serviced the whole assembly has to be replaced. For example, I had a universal joint on my drive shaft go bad, Toyota said you could not service the drive shaft and the whole drive shaft had to be replaced. I can't imagine replacing a whole transmission for a 9 dollar seal.Jerry

 

Yes, you can absolutely replace that seal with some simple tools. No need to disassemble or remove the transmission. I always used a small metal 90' pick to pluck it out. Be careful not to scratch the shaft or the transmission case. Then re-install by hand without damaging the seal.

 

Thank you again AZEric. I will try to find a part number or the correct seal, because when Toyota looks it up it just shows a hole in the side of my transmission. I wonder if I should have them look it up by the year but under a Tacoma instead of tundra, problem is they look everything up by a VIN number, and there's no seal showing, but it shows the hole, doesn't show the seal there or a part number. But at least I know what it is now. I really really appreciate your time.Jerry

 

Should be a A750e here's a schematic and parts list for it, I found some good sites for info while I was troubleshooting my 2007.

https://at-manuals.com/wp-content/uploads/2016/manuals/A750 scheme.pdf

https://go4trans.com/transmission/a750e-en/

 

Yeah, no probelm Jerry! Happy I could help. I am really surprised the dealer can't find that seal & part # with your truck's vin#.

To be honest, I used to know that part # and I believe that seal is shared on many Toyota automatic transmissions. Best of luck!

 

I could not help myself and looked up the part online. Follow this weblink below, keep in mind Toyota part schematics are not always an exact reflection of your specific vehicle configuration. I am almost 100% certain that 35506F highlighted below are the shift shaft seals. And 35561 is the shift shaft itself. Actually, Toyota might refer to it as a selector shaft in some parts catalogs....

https://parts.toyota.com/a/Toyota_2...ROTTLE-LINK--VALVE-LEVER-ATM/841430-3513.html