How to lubricate fan bearings in furnace?
So in our 27-year-old Winnebago Warrior, we have a Suburban NT30KLT furnace. In the last couple of years, the first time it fires up you can hear the fan bearing squalling a bit and then it quiets ...
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As previously noted, the fan has bushings not roller or ball bearings. The squeal is because of bushing and shaft wear. Lubrication will only cause the squeal to go away for a short period of time. The motor needs to be replaced.
Richard
Richard
