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Message: <blockquote data-quote="frogfarmer" data-source="post: 37146" data-attributes="member: 4075"><p>Given you know some debris was introduced to the system reservoir I would be looking at the low pressure fluid feed to the problem pump. Commonly called the charge line. Blockage could be in a T fitting that sends fluid to both pumps. An IR point and shoot thermometer would tell you if you have a blockage due to heat change at the blockage. I worked on a brand new unit with no drive to one side it was set up to feed both pumps from the filter housing that was cast aluminum. The feed to one pump was completely blocked with casting slag. Needless to say that housing was overnighted to the manufacturer and we sent the entire unit back. Tazza is right about the paper all the manufacturers specify a lint free enviroment. If you had no fluid in the problem pump due to a blockage at initial startup you may have scored the mating surfaces badly enough to ruin the pump. At some point the blockage may have passed but the damage was done. If you can verify the problem pump has charge fluid I would suspect it is bad; but I would check the motor lines with a guage to verify.</p></blockquote><p></p>