New deer gun

Well, new to me. My father in-law bought me a Remington 7600 (pump action) in 270win. It's used, a little banged up but perfect for deer hunting down in Florida with him. Well, looking at it closely....it's filthy! I downloaded the manual for it and will break it down and clean it. The manual only tells you to clean the bore "alway clean the barrel from the muzzle to the chamber" (news to me!) and to remove the trigger plate assembly. It says nothing about cleaning around the bolt area. Does anyone know how to disassemble receiver so I can clean it? It looks like I can remove the fore-end screw kind of like the 870 and go from there. I'm not sure the barrel will come off in the same fasion though.