crwdns2934241:0crwdne2934241:0 rotohead
crwdns2934249:0crwdne2934249:0:
Sometimes the plate the blades mount on can come loose. You may need to remove all fan blades, level the mounting plate (usually one set screw tightens against a rotating shaft). Turn the fan on w/o blades to see if the plate wobbles and then replace blades.
crwdns2915684:0crwdne2915684:0:
open