Dometic blower squeal/squeak

[kmb1966]

I sleep with the blower on constant and in the middle of the night the Dometic a/c started sqeaking/squealing sound. Compressor wasn't needing to come on because it was in the 50's. But the fan blower was on squealing. Unit is fairly new (3 years). Squeal would go away for a while, and then come back. Is it a replace blower situation or can I lubricate it somehow?
Dometic Penguin A/C 13,500

[kmb1966]

dougrainer wrote:
I would lubricate the motor shaft with penetrating spray lube. Also, make sure it is not one of the 2 Fan blades/impellors that is making the noise. They may be rubbing slightly and need to be adjusted away from the housing. Doug

Update on this topic: I did the above recommendation. The squeak stopped and it has now been several nights of good sleeping with NO SQUEAKING! THANK YOU DOUG! :C

[2oldman]

When that happens to a heater fan motor it's replace time.

[dougrainer]

I would lubricate the motor shaft with penetrating spray lube. Also, make sure it is not one of the 2 Fan blades/impellors that is making the noise. They may be rubbing slightly and need to be adjusted away from the housing. Doug