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[Toploader]

Ever find the fittings on your AOD TC leaking? Or on-the other end, the trans cooler fitting leaking on the radiator?

Here is the p/n of those special nuts:

E6VY-7D273-A

[gadget73]

They stopped using those things around 88 or 89. Unfortunately to convert, you'd have to modify your existing lines to fit normal inverted flare fittings on there, plus get the flare to pipe thread fittings for the trans and radiator end. Or you just change the stock fitting and leave it be for 15 years or until the trans or radiator get removed.

Good find on the part number. Getting that thing is like pulling teeth. Parts houses can get them, but nobody knows what the heck you are talking about. One small store around here has them right behind the counter. Last time I needed a pair, I went in and pointed at them because they didn't know what I was looking for.

[Toploader]

Gadget, this all started after the new radiator was installed and before dropping the lift we checked for Prestone leaks.........well what we saw was trans fluid dripping!............found it was coming from the two nuts on the side of the torque converter........fortunately my bud had the old tools to tighten those nuts, and had one new spare!.......he said he had not seen those nuts in years...........well we drop the car down.......I pull away and drive about ten miles to my mom's place.......just for the hell of it I pop the hood and look at the coolant lines going into the radiator side tanks.........well trans fluid is leaking from the top nut!...............back to the shop...........no new nuts...........but......a new tub of plumbers pipe dope...........seems to be working
Anyway, call around some FoMoCo parts dealers who were kind enough to check p/n for those nuts..........found that the ones on the converter are the same as the ones on the radiator side tank.

All this because those coolant lines were moved after almost 30 yrs of being left alone

[gadget73]

yeah, they leak when you disturb them. Nothing to be done for it short of replacing them. They usually don't leak around the threaded part. There is an O ring inside of there that fails when the nut is turned, and it leaks between the O ring and the tube itself, running right out of the back of the thing.

Ford quit using those things in the late 80s. I think they started in the mid 80s. Seems to have been a several year failed experiment. GM uses something similar on their oil cooler and trans coolers on my S10. I had to buy those blasted things when I replaced the radiator. Then I found in the bottom of the box a package of new ones. Oh well, I'll have spares that I will not be able to find in 20 years when the radiator fails again.

[sly]

I said F!U! to those things and just cut the damn things off and ran some rubber trans line after single flaring the end of the cut line to better hold the hose.