727 trans issue

There’s definitely clutch material in tr

i guess the point of this post was lost in translation. I am not trying to do it wrong, what I am asking for is first steps to figure out the problem so I don’t go replacing stuff I don’t need.

A 1k idle will generate a lot of heat via the converter.
Bumping it into neutral instead of idling in gear will keep it cooler.
But what’s done is done at this point.