MAKING LOUD NOISE

first, used putty knife to open top of dryer, then removed front panel (nut driver removed hex head screws.
removed housing cover with support arm, again with nut driver.
cleaned lint from area
removed two clamps holding broken part in place
removed broken part, installed new blower wheel, which required a rubber mallet and the old part to coax into place.
replaced clamps, replaced housing, replaced front panel and closed top - the dryer is now running more quietly than when it was new