Pr0t0c01
New Member
Hey there again, it's been awhile since I've made a post on here as you guys got me fairly well setup a few years back as I was building my garage that we are still currently living in, but improved on lol.
Recently I noticed that my J5S wasn't keeping up with water demands, in fact the pump would kick in at 30psi and it used to cut off somewhere in the lines of 55-56 I believe. Now it kicks in like it should, but if too much demand, the pressure in the tank drops reading to around 10psi and I can hear the pump cavitating.
I assumed the pump which had lots of silt ran through it over the last 3-4 years, more so the first few years... Needed a rebuild on the pump side. So I got the main parts and was ready to rebuild. I was given the wrong parts somehow for the impeller and housing but found mine to be perfectly fine, no signs of any wear oddly enough. I replaced the main seal and the spring loaded portion behind the impeller.
Just because I had everything out, I pulled up my 1" pex inlet from the 2" casing and put a new 40ft piece down there with a new foot valve on it. In retrospect, none of this apparently needed to be done, as I still have the same issue.
Now I'm wondering if it's a bearing on the pump shaft possibly slowing down the pump RPM to the point where it isn't able to build pressure properly? It does have sort of a grinding sound when running and when it comes to a stop, it sounds almost like it comes to a much more sudden halt, rather then spinning down gently.
I wasn't able to check the pressure in the tank (36gal) as I couldn't drop the pressure to 0 at the time. But I can confirm no water out of schrader valve and the top portion of the tank has air in it and sounds normal. I recall having it set to 2lbs below the cut in setting.
Any insight into what this likely is and how easy/expensive is it to replace those bearings if that is the issue?
Recently I noticed that my J5S wasn't keeping up with water demands, in fact the pump would kick in at 30psi and it used to cut off somewhere in the lines of 55-56 I believe. Now it kicks in like it should, but if too much demand, the pressure in the tank drops reading to around 10psi and I can hear the pump cavitating.
I assumed the pump which had lots of silt ran through it over the last 3-4 years, more so the first few years... Needed a rebuild on the pump side. So I got the main parts and was ready to rebuild. I was given the wrong parts somehow for the impeller and housing but found mine to be perfectly fine, no signs of any wear oddly enough. I replaced the main seal and the spring loaded portion behind the impeller.
Just because I had everything out, I pulled up my 1" pex inlet from the 2" casing and put a new 40ft piece down there with a new foot valve on it. In retrospect, none of this apparently needed to be done, as I still have the same issue.
Now I'm wondering if it's a bearing on the pump shaft possibly slowing down the pump RPM to the point where it isn't able to build pressure properly? It does have sort of a grinding sound when running and when it comes to a stop, it sounds almost like it comes to a much more sudden halt, rather then spinning down gently.
I wasn't able to check the pressure in the tank (36gal) as I couldn't drop the pressure to 0 at the time. But I can confirm no water out of schrader valve and the top portion of the tank has air in it and sounds normal. I recall having it set to 2lbs below the cut in setting.
Any insight into what this likely is and how easy/expensive is it to replace those bearings if that is the issue?