If an axleshaft is broken and you have spares, the next step is to pull the brake caliper, hub, and spindle. You’ll need a hub socket. Shown is one for a Dana 44, but there are different ones available for Dana 25/27/30, Dana 60, and so forth. Take some time to pull your hub off and see which socket your axle takes. Most auto parts stores sell a wide variety. Don’t forget to pull the caliper off the rotor.