Just replaced my master cylinder, wheel cylinders, shoes, and pushrod assembly. The only trouble I had was the new shoes were a little to thick. It took a little patience getting the drum back on. The shoes were dragging on the drum for the first couple of trips around the block. I pulled the brake lines loose at each wheel and used compressed air to clear the lines. After getting the system back together I purged the lines until I had clean fluid from both wheel cylinders.