Furnace howls
It's getting to be warm here in Southern Arizona, but it still seemed like a good idea to check the furnace in my new (used) 1999 Santara 23RB Class C. Howls! Banshee-like howls and screeches! So...
Forum Discussion
wolfe10 wrote:
Strongly recommend AGAINST 3-1 oil. It increases viscosity with time.
A light, non-detergent oil such as sewing machine oil is much better choice for the fan motor bushings.
Actually, 3-in-1 'electric motor' formula is designed for exactly this use.
I would however highly recommend against just letting it howl. It's a sign the bearing is dry and the shaft is bouncing around within the clearance that should be taken up with lubricant. That bouncing and friction will dramatically increase the wear.
