Replace JLC Allegheny Electrocoupler?

Lionel's part site for the tender: https://www.lionelsupport.com/...nder-Only-6938081T01

You will probably need to remove the tender screws to take the shell off.  Remove the C clip holding the rear truck on, unplug the electrocoupler wiring connector from the board, (probably) remove the pins from the white plastic connector to gain room to snake the wires down and out the bottom of the frame, and then remove another C clip to remove the coupler from the truck.  Installation is reverse of removal.

Depending on clearance you *might* not need to remove the truck from the frame, but you probably will.  I have one of these engines.  If you have trouble I can take a look at mind and assist.

Worth also nothing: you may just have a stuck coupler.  If it buzzes but doesn't open, try pulling on the knuckle while hitting the uncouple button.  See if you can force it open.  Then if you have some very, very fine oil, lubricate the hinge on the knuckle.  Sometimes just playing with it for a while and lubricating it has worked for me for ones that were just stuck.

Thanks Woody! The coupler does not buzz. It does nothing but make the sound.
Thanks for the list!