07-23-2023, 07:13 PM
(07-23-2023, 06:06 PM)EdK Wrote: The AC unit in my shop doesn't work well once it gets up into the 100s. It squeals like a banji. I think the heat distorts the housing and tweaks the motor bearings. It's a window unit. I can work in there in the morning briefly then need to exit to cool down. It's been in the 100 teens for the past few weeks.
Ed
How old is the unit? The blower motor in my furnace started squealing as well which is what prompted the replacement. After getting the old motor apart I discovered the wicking for the sleeve bearings had completely dried out and didn't have a single drop of oil left. It's a "modern" motor with no oil ports for the bearings. Thankfully we caught it early and I was able to polish out the motor shafts and bushings to clean them up. Re-soaked all the wicking material with fresh machine oil and it's ready for service again if necessary.
Willie