Polaris booster pump rebuild

Thanks for the followup.

These pump/motors are not bad units. The seals will leak eventually, but every rotating seal will do the same once the rpm-hrs are up. My pump runs 12hrs/day, 365 days per year for 4380 hrs/year service. I had seals last 5-7 yrs w/o leakage, thats over 20000 hrs service life. Many turbine engines won't do that many hrs w/o an overhaul.

Only thing I might change is to create some type of deflector device (rotating disc?) on the shaft between the end bearing and the pump. This would prevent water getting to the bearing and allow an easier repair. Still, it's not too tough to replace the bearing.

My main pump has a rear bearing noise that's been going on for about a year, and I've put off pulling the pump. The worst part for my pump removal/installation is releasing the wiring from the pump and unscrewing the conduit by rotating the pump. There isn't room for an interior conduit nut and the conduit threads into the pump shell. A real PIA.

I ***ume all your thru-body bolts released w/o problems? I'm hoping my remaining two come away easy when I replace the rear bearing.

regards

I have been dissatisfied w/ the noise from my main circulation pump for some time and decided to pull the pump and motor down. Pump seal was not leaking and I found both bearings in good condition. I had earlier puchased a 10-roll lot of bearings on ebay for $10+shipping and reinstalled two of these bearings. I kept my old bearings in case these China productst are no good, but noticed the ones in the pump were from China also.

I did the work in place w/o disconnecting the wiring which resulted in much easier repair. I laid a work pad of hard cardboard down and pulled the armature w/ bearings out. The 3 bolts (not 2 as I earlier said) were still in good shape and released easily due to previous use of anti-sieze.

After reassembly, and restart I was disapointed to find the noise level only slightly better. I now believe the impellor may be making the noise. Hard to tell.

regards