tgui

Its probably your servo pin.

While on my bench I did a ton of pressing on the servo to get it to engage correctly, I even had to weld some material on the end to adjust length after I cut it too short!

I followed this short guide.
400/4L80 Band Adjustment

tgui

Also, my old drum was crazy worn. I had to get a new one.


Can't see, but lightly sanded to remove glaze and improve grip.

vipergtrdj

Thanks for the link. I'll test it out. I dropped the pan and pulled the servo. Found the c clip for the pin was bent into the piston cover. Almost like something tried yanking on the pin to pull it out of the cover. I have a spare pin but need to measure it. The original pin I damaged when removing from the piston, it was stuck in there pretty good. I attached pictures, hopefully can see what I'm talking about.




Original servo - marked up pretty good from removing pin.








Original pin on left





Do these lines mean anything?

Beatdown Z

iTrader: (18)

Yea, those lines can tell you the length of the pin. Do you have an ATSG manual? That would help you determine what length pins you have.