How to Troubleshoot & Replace Samsung AP4066431 / 6021-001208 Range Hexagon Nut Cap

While removing the old fan (top), I stripped the nut. Initially thought nut was opposite turn based on research. Had to hack/dremel the shaft to removed fan. Initially ordered wrong replacement fan from another vendor. AppliancePartsPros.com support went about and beyond to ensure the correct fan was ordered. Unfortunately, new fan was busted upon arrival. AppliancePartsPros.com promptly addressed the issue assisted with ordering and the rershipment. 

The problem was a faulty lower fan ( this oven has an upper and a lower fan). Had to take front door off and had a little problem getting it off. On inside, had to remove nut that holds fan on, remove fan and sleeve over shaft(nut turned clockwise to loosen). I ordered new fan assembly complete with a conical shield and reinstalled sleeve. Important—shaft of new fan has different threads and must order new nut with new fan assembly. Old nut would not screw on. Sales agent alerted me to the need for new nut. Reassembled and now oven fan works fine. Be sure to place something under oven feet so doesn’t scratch floor 

Youtube the problem.