I noticed a small leak under the pump housing, so I obtained the appropriate Go-Kit and replaced all the seals. I put everything together and it worked fine. One day later, I'm hearing an intermittent ringing sound from the pump/motor. It's the same type of ringing sound you might hear if run your finger around the edge of a wine glass.
Everything worked fine before the tune-up.....pressure, flow, all of it was within normal parameters for this pool. After the tune-up, everything still works fine, all within normal parameters. There is no bearing noise, no grinding, pressure is fine....no leaks, etc. The only thing at issue is this ringing sound that occurs about once a minute, and lasts for about five seconds. It starts softly and ends softly. I followed the install instructions to the letter, including lubricating where indicated.