Take this slow and careful in order to get the two settings you'll need when you reassemble. Before removing the 6 bolts holding the rear disk on, rotate the prop so that the blades are feathered (facing fore and aft). Tape the hub so that it cannot rotate, and then remove the rear disk. You'll then be able to slide the 3 blades out as a unit, as they fit on a Y shaped spacer. Make sure the hub doesn't rotate while you're doing this, as there is an index mark on one of the internal faces, and you need the letter (I think, may be a number) that it is next to. Also note that each blade, the spacer, and the hub are all marked with a blade number, so when you reassemble you need to make sure all are in the right place.
Once you have the blades out, there are 4 bolts (all with cotters) that hold the two halves of the hub together. Remove those to expose the center spline and the gear
inserted in it's rear. When you pull that gear
, note its setting (marked with an "x" I think). That's the 2nd setting you'll need to reassemble. If you get the settings wrong you'll either have the wrong pitch
or the wrong rotation (this prop can be assembled as either right or left hand). Under the gear you'll find the previously mentioned nut that holds the spline on the shaft. You'll probably need a gear or hub puller to get the spline off the shaft which is tapered.
When you reassemble you'll need to do the reverse--taping the hub in the right position, inserting all 3 blades simultaneously and all feathered, and then getting the rear disk on. It'll go much faster with 2 people.
Added: Good advice from SteveSails that was posted while I was typing this.