can i remove just the rear sliding glass on a 1982 f150 without removing the whole window. i broke one and have a parts truck i can take it out of.

 

Yes its possible. You need a heat gun and some epoxy. Heat the track part of the sliders. The black part will slide off of the glass. Epoxy the bottom and install glass. Put it in place and epoxy the top slide the channel over the glass engaging the slider slot and then close it and let it set for 24-36hrs to ensure full cure and good bond.