if you pull your axle, rear end gear oil is going to leak out...I always jack the side I am working on a little higher than the side I am not working on to avoid the spillage.Use a pointed pry bar to reinsert the axle item# 53 ( it give you leverage by using one of the axle bolt holes)
you will need new gaskets if I remember correctly item# 51 plus some sealant
be careful with the oil seal,