>> NO MORE STUCK RECEIVERS <<
Not wanting to get into some of the sledge-hammer episodes that I have witnessed others who are less quick in their thinking partaking in, I like to coat the shanks of hitch receiver tongues with a generous layer of anti-sieze.
Though, at about seven bucks for a little skinny bottle, that soon quits being so much fun.
There is a better way and I stumbled on it;
Alemites in the receiver.
Lacking a welder, you can simply drill/tap the receiver in several spots to accomadate the thread size of the Alemites you intend to use.
If you can weld, then drill the holes and tap them for threads, then thread a nut of the same caliber onto a bolt and screw the bolt into the tapped hole, until the nut is against the receiver.
Weld the nut to the receiver.
Lubricate and remove the bolt, and install the Alemite into the welded-on nut.
Doing thus prevents any possibility of the Alemite bottoming against the hitch tongue and gives the grease a little driving room to better spread in all directions.
Seeing as how one entire side of the receiver is usually inaccessible, I would install SIX Alemites, one each side, centered between the pin-hole and end of the receiver, both fore and aft.
Now, every time you are greasing anything else, be sure and give all of your receivers a squirt also.
If you live in salt or sand country, the grease will help to purge any grit that may try and migrate into the receiver.
Follow these instructions and you will never be the one swinging that nine-pound hammer and singing the Spike Driver Blues, trying to get the tongue out of the receiver.