Tools required: Stubby socket wrench, 5/16" socket, 1/2" socket, 1/4" socket, #3 Phillips screwdriver, external circlip pliers, straight slip joint pliers. A decently strong electric screwdriver is highly recommended - Milwaukee 2401-20 M12 cordless 1/4" Hex Screwdriver, for example.
Unplug the dryer. Turn off the gas supply.
Remove the screws holding the door hinges to the dryer.
Remove the door and hinges from the dryer by pulling the door and hinges up, then out.
Remove the two plastic thingies (door stops), opposite of where the hinges were, from the front panel of the dryer. Each plastic piece is held in place by two screws.
Grasp the front panel by its top edge, pull it toward you, then lift the panel up and off the clips at the bottom.
There are a couple metal brackets holding the top of the dryer down to the front shroud (the doorway) and frame, one on either side. Each bracket is held in place by two screws. Remove the screws, remove the brackets, then rock the top panel up and back, like the hood of a car.
Remove the screws holding the shroud to the frame. Look carefully. There are two screws that look like they hold the shroud to the frame, but actually do not. Don't remove these screws yet.
Remove the screws holding the plastic duct / lint screen slot to the shroud. These are very long.
Disconnect the wires from the door switch.
Remove the shroud.
Remember the two screws I referenced previously, stating they shouldn't yet be removed? Now's the time to remove them. Do so, then set the panel aside, being careful not to damage any wires. Don't lose the rubber gasket sitting around the circular portion of the duct.
There's a metal cover over the blower wheel. This cover is held in place by a bunch of screws. Remove them all, then remove the cover.
Remove the circlip going around the blower shaft, in front of the blower wheel.
Remove the clamp from around the blower wheel and shaft.
Pull the blower wheel off the shaft.
Install the new blower wheel.
Reinstall the clamp around the blower wheel and shaft.
Reinstall the circlip.
Reinstall the metal blower cover.
Make sure the rear of the drum is resting on the wheels.
Now things become a little difficult, because you have to fight the drum a little bit. Put the panel containing the moisture sensor, front drum seal, and duct into position. (Be careful not to mess up the drum glides. Make sure the rubber seal at the bottom of the vent is in place, sealing the vent to the blower.) Screw the panel into place with two screws, but don't fully tighten yet.
There's a felt seal that is supposed to go between the rear lip of the drum and the rear inside wall. The seal is supposed to be held folded, pinched between the lip and the wall, with the edge of the seal being outside the drum. The seal isn't supposed to jut into the inside of the drum. Use your fingers and some other tool to push the rear felt drum seal out of the inside of the drum. If you use a screwdriver, be careful that you don't cut, rip, or otherwise damage the felt seal.
Do the same with the front felt drum seal.
Carefully inspect the felt seals. You don't want any portion of the seal somehow working its way back into the inside of the drum. Then verify again that the rubber seal that goes between the blower housing and the vent is in place and properly sealing. Now tighten the screws.
Connect the wires to the door switch on the shroud, then loosely screw the shroud in place. Screw the shroud to the vent. Once all the screws are in place, tighten all the screws.
Lower the top of the dryer into position.
Hook a bracket into one side of the lid, position the bracket over the front shroud, then screw in place.
Repeat with the other bracket.
Place the front panel onto the bottom clips. Seat the panel onto the clips all the way, then rock the panel forward into place.
Install the plastic door stops.
Insert the door hinges into their slots, push the door down to seat into place, then install the screws that hold the hinges in place.
Plug the dryer in, turn on the gas, test.
Other Parts Used: