Installing the stub axle is one tough job! There are 5 bearings, 4 races and 3 seals. Everything in this rear axle assy it tough to get apart and tough to get together. Make several tools and bought several pullers including a 10 ton hydraulic one to get the big bearing out. The crush washer is very tough, a 5' breaker bar did nothing so I used the big impact wrench to slowly tighten with checking end play about 15 times.