I know just what you're talking about...I tried removing it to see if it would give me more room for when I was doing something to my belt...I took the same 3 bolts off you did, and the center one and it only moved around, once i realized it wasn't important enough i just figured it wasnt worth it(not a very motivated day for me) but I think I remember finding two more caps on the bottom that need to come off...then the upper rad hose needs to be taken off or have a friend pull it back you might be able to squeeze it out, also that plastic piece on the top, forget what it does, (holds in a vac line?) needs to be pushed back alittle, it hung over the cover slightly on mine