I am trying to repair my General Pump T1321 Series 47. It is pulsating enough to close off the bay. I replaced the check valve o-rings about two weeks ago and apparently forgot to replace the top three. The o-rings were damaged pretty good so I guess I need to look at the packing that I replace two days ago. I must have put the packing in incorrectly.
Now the head leaks and the high pressure is still pulsating. Hopefully tomorrow will be a better day for pump repair.