Ok, I started on the second one today so here are some notes. What you will need:
-screwdrivers and ratchet set to remove them from the airstream
-1/4 in socket adapter for the self tapping screws
-a few small sockets for the motor nuts
-1/4in wrench for one screw that the screwdriver canít reach
-some new gasket insulation from a heating supply store
-butyl tape for the vent
-Allen key for the fan cages set screw
-oil or grease or graphite...
I think thatís it
-disconnect the electrical wires to the furnaces
-disconnect the vent tube from the outside
- the bedroom furnace is accessed by the access panel
-the kitchen one required removing the access panel door and frame. And it also sits on an aluminium ducting adaptor that makes it too big to pull out so you just unscrew the furnace from that base and it will slide out.
-you disconnect the vents from the sides. Lifting the adaptor and rotating slightly and they just pull off.
The picture shows that duct adapter.
Once you have them out and on your workbench you can remove the blower assembly.
Remove all these screws. Note that some are longer than others.