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Message: <blockquote data-quote="Clone" data-source="post: 93921" data-attributes="member: 13049"><p>If your loader (boom and tilt) still operate at normal speed I would say your hyd. pump is good. It also is supplying oil (charge pressure) to the drive pumps. Sounds like the light/buzzer is giving you actual indication by the cavitation noise you are probably hearing of the drive pumps. I would say the drive pumps are leaking internally back to the case drain and the hyd. pump is having a hard time keeping up. I would recommend you post this in the New Holland section further down the main forum page. New Holland resident expert Mike10 only watches that section. He will get you lined out. Until he can give you advice, here is a great thread of how to test your drive pump leakage. Several pages of reading! http://www.skidsteerforum.com/DesktopDefault.aspx?tabid=54&frmView=ShowPost&PostID=82681</p></blockquote><p></p>