When I try to turn the nut on the fan inside the oven the fan justs keeps turning is there a way to stop the spindle from turning

Derek, February 2017

Clearly shewn here:

https://www.youtube.com/watch?v=uJoNi8BeVmY

and here:

https://www.youtube.com/watch?v=TToJgQGvV-U

Note: Your fan motor shaft may have a LEFT HAND THREAD. Look at the replacement. Check the direction the engineer turned the nut to ndo it in the two above examples

Another one here, but the nut appears to have been pre-loosened

https://www.youtube.com/watch?v=AYC3mVlqxmA

Yo'd have found all those with a quick Google search for "change oven fan motor"

XXX, February 2017