My AO Smith 1.5hp pump motor was making a squealing noise so I changed out the pump motor bearing. Motor is quiet during a bench test (and also quiet when mounted without any water being pumped).
However, when the pump is primed it is making a constant loud noise (not squealing or metallic sounding). Motor primes fine and pumps fine. Any ideas as to what the problem might be? Thanks.
However, when the pump is primed it is making a constant loud noise (not squealing or metallic sounding). Motor primes fine and pumps fine. Any ideas as to what the problem might be? Thanks.