easy to work on, the po of my car didn't know much of how to service the unit. He put bearing grease on the seal bearing for what I don't know. The grease started to run inside the drum getting on the shoes. The plate that bolts the axle into the housing puts pressure on the outer race of the bearing keeping it from spinning against the housing. Good idea when you have it apart to do a little more at that point to replace the normal wear items.
