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Message: <blockquote data-quote="wford" data-source="post: 47890" data-attributes="member: 6365"><p>Tazza, thanks for the reply. I've always thought it acts like a faulty relief valve, but haven't found any problem. I inspected the charge pump relief valve - it was clean and appeared to be in good working order. The charge pump operates at spec of 50 psi until the pressure dumps to zero. I inspected the two check valves and they were clean and in good working order. The three valves were also inspected by the Repair Facility. I don't know if the test truly replicates conditions as it would if pump is coupled to a motor...and I don't really know how they went about testing it, but the tech is known to do a good job. Since it is such a pain to work on, I've put off removing both motors and switching them until now - thought the repair facility testing would locate a problem. Rather than remove the motors, I may get a couple of longer hoses and just couple the right pump to the left motor and see what happens. When there is no resistance on the motors (up on blocks), the left side won't fall to zero pressure - only when there is some load on it, causing it to produce more than 1500-1800 psi. I'm concerned about the charge pressure falling zero and not providing lubrication to the pump, but the pump hasn't failed during the time that this has been a problem, so I don't know...</p></blockquote><p></p>