At first i just bought the belt, started dryer and off came the belt, and yes it was in place,looking at the idler arm it had a lot off back and forth movement so i ordered the whole assembly but the spring which no one has.put it all together again but drum barely turned.. so back apart and belt was in place. took the idler spring out cut 4 loops off it re did the end so it would hook on idler arm.and that did the trick.runs like new.