REALLY REALLY easy to remove on 4x4's...
Wheel off, caliper off(14mm wrench, 2 bolts), hang caliper away somewhere, caliper mounting bracket off(15mm wrench, 2 bolts). Then just slide the disc off. Install is reverse. Remember to use red locktite on those caliper bracket mounting bolts....the like to walk out.
You may have the stock retaining washer thingys that you need to brake off. It holds the disc to the hub/bearing unit during assembly on the line.