Help! Intertherm blower motor

[williamcharrison]

I am desperate for any info I can get on repairing/replacing the
blower motor in the Intertherm a/c unit on my '90WL.
The fan runs for about 10-15 minutes then slows down and stalls.
If I let it sit for 5 - 6 minutes it will run again for 10-15 min's.
When it first runs it runs at top speed and the drop off to 0 rpm
takes about 30 sec's. Same result with a/c on or fan only.
Has anyone out there had this same experience? If so can someone
tell me how big a job it is to replace/repair the motor and how much
disassembly is required to access it?