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Message: <blockquote data-quote="Bobcatdan" data-source="post: 84868" data-attributes="member: 7339"><p>Relief vavle is on the control vavle. Always check and set relief pressure after a pump replacement. Easiest to hook a gauge to the aux coupler. I believe a 763 is speced at 3000 psi, maybe 3300 if a newer one. Improper relief pressure is the main killer of a pump. Probably is what cracked the old one. If ran enough, it could have smoked the new one by now.</p></blockquote><p></p>