Hesston 1180 blower motor access

[ns_in_tex]

Would anyone know how to access the ac/heater blower motor on a Hesston 1180 tractor?
It is making strange noises and we would like to fix it before it quits altogether.

 

[ns_in_tex]

Ok, since no one answered, we may be the only person left in the world with a Hesston cab tractor, or maybe the only one that the blower motor has worn out on.
1. Remove the metal access panel on the roof. 2 bolts.
2. Remove all screws & clips on the black plastic cover underneath #1. Note, 4 screws are down low & hard to find.
3. Drill out 2 pop rivits on expansion valve bracket.
4. Lift up and out black plastic cover.
5. Blower motor is just laying there, lift and unplug.
6. Now, if we can find someone that will install new bearing bushings in it, we will be set.
Sure wish I had known this before we tried removing the cab head liner.