[sensei]

Originally Posted by slief

I suggest cleaning your skimmer pump inside and out every 4-5 months. That will insure the best long term reliability and peace of mind while also keeping your skimmer pump running and looking like new. Besides, the whole process should only take about 15 minutes including a 10 minute soak in vinegar. I check my venturi port about once a month regardless of whether or not I have had an overflow. It’s just something I do as preventative maintenance.

In case you haven’t seen it, this thread in our sponsor forum covers all those details.
http://www.reefcentral.com/forums/sh....php?t=2573406

Thanks a lot Slief,

I cleaned the pump.
the manual I have says that the 75Watts RD3 has a additional axial floating bearing on the rear shaft but I did not find it.
I found a teflon white ring in the container after I pulled the rotor out.
I am not sure if it is installed instead of the bearing and if I installed it correctly.
here is the photo

rear shaft.jpg
can you confirm that this teflon white ring should be installed there on the rear shaft please