Jimm 7/9/2013Remove the four (4) mounting bolts on the bearing hub outer flange. Then, using a puller (across the wheel lugs on the outside) simply pull the bearing ub assembly out from the axle housing - it's a press-in fit for the rear bearing hub.
You are correct to not use a hammer - damage may occur with too much force applied.
Check the many on-line auto parts sources, such as; www.partsgeek.com, www.carpartswarehouse.com, or www.rockauto.com for the replacement parts. For example, they (RockAuto) list the rear axle hub assembly from around $62.00 each for your vehicle.