Unplug power to dryer!
First I removed the two screw holding the front door, and the screw on the other side, which hold the front panel in place. Then remove the next panel, which has the lint capture basket in it. Two screw in opposite corners hold this in place. After you remove these, the drum (part where the close go in) will drop and come out. Keep in mind, you will have to un-attach the belt from the motor. This is very easy, as its help in place by a tensioner pulley. Self explanatory on that one.
Next pull the drum, so you can get to the bearings. Use your snap-ring pliers to remove the snap rings and swap out the couplers. Follow the procedure in reverse. If you're mechanical, it should take about a hald an hour or so, but if you're not, your looking at an hour and a half.
When done, plug dryer back in and test tub rotation.