I have two Carrier 39 series A/H that need shafts and blower wheels . last week upon replaced bearings we noticed this.
Carrier says these are custom units and there should be a 17 digit number to see if any of the parts are still available.
Problem is the paint shop painted these with a real nice thick white paint and there's no markings of any kind anywhere. today we had several people looking for these identification marks and we all came up with zip.
Can anyone who has knowledge of these old units give us a location of the 17 digit # so we can try to remove a spot of paint to retrieve these numbers?