1st stop using it without filter as it could cause a fire!
remove the bottom back panel where the vent hose comes out.lay dryer on its side and remove the 4 screws that hold the motor.disconnect wires to motor making a note where they go.there is a plastic pin which holds the plastic fan cover on that needs pulling out and then quarter twist cover and you can totally remove the motor.this will give you access to everything for cleaning it out
ck
March 2011