i have a 1982 bolens articulator 942 with chain drive and drum brakes.i just made up a new steering cable and noticed the wheel on the left should have a new axel bushing.does any one know how to take this apart to replace the bushing and were to aquire this part.i took the wheel off removed the bolt in the end of the axel and the snap ring but am not having any luck getting the wheel hub off any info would be greatly apreciated