My dolly had a hard time for the pan to turn with or without car on it. I looked all over and couldn't find any info on this except take it back to the dealer. So myself and son did the best thing we tore it down.
They said the pad was Teflon but mine isn't and the manufacturer applied grease on it. This was full of grit
The bottom of the pan was also full of grit and it was painted which cause gum balls.
The Teflon washer also full of grit.
We cleaned up the area and removed the paint on the rubbing surface and reapplied a good water resistant grease. Torque on nut no one knows so I will probably do 60 foot lbs or more. I hope this will help others with this issue.