The rear furnace has developed a whine , suspect the fan motor sealed bearings are drying out .
Plan to replace the motor , has anyone photos of this change out or advice on suitable motor replacement, would like to have motor on hand before stripping the furnace down .
Link to Atwood manual. See page 23 (Circuit Breaker & Motor), and page 47 (Part Reference - Motor). You need to make sure you order/buy the correct motor for your furnace model. Once you have the motor part number, do a Google search for price and availability.
http://bryantrv.com/docs2/docs/hflamefurn04.pdf