Place the drum into position.
Put the belt around the drum.
Feed a loop of the belt through the idler arm.
Put the loop onto the motor spindle/pulley.
Put the claw feet of the idler arm into the slots (on the roof).
Hook the spring to the switch on the roof.
Put the other end of the spring into one of the holes in the idler arm.
Put on the rear cover, it is a bit tricky but if you chock up the back of the dryer about 70mm (3"), you can slide the cover on from the bottom and align the drum into the felt bearing housing (you might need to help it a bit by putting your arm in the dryer and lifting the drum a bit), put in a few screws (4 at least) then try to turn the drum from inside the door, it should run smoothly and not grind anywhere. If it does grind remove rear cover and try to re-align.
If it all seems ok put in the rest of the screws.
Put on the belt for the fan and re-install the fan belt cover and the air vent cover.
I suggest you test run in the cool position first and if it sounds ok then try the warm or hot setting.
good luck I hope this helps
Grant, April 2007