Looks like plenty of brake pad left. Piston looks like it is way extended. I don't have a book. Talking with IMGTX he said a Concorde he was working on needed almost 1/2" of material on each pad. I need an oil filter for the Cummins so I am going to go check some new pads at the store.

I coated the slides and the chrome plated pins with Neversieze for lube.