Simple job. Comes as a unit, noticed that Rock Auto had a good price on Timken assemblies. Don't buy the cheapo units, as there are some bearings out there that are not up to par .
Do not waste your $ on a Haynes or Chilton manual!!! Go here: http://www.bedlib.org/ebsco.html
User Name is "library" Password is the same. Can be used for ALL brands.