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JD 6420 Whining Noise
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DVFarms
Posted 4/8/2020 11:07 (#8173589)
Subject: JD 6420 Whining Noise


Northern Kentucky
Changed the hydraulic oil and filter in this tractor now there is a extremely loud Whining noise in the cab and sounds like the pump cavitation. All functions work but I am conserned I damaged the pump. What is the best way to test these tractors? The 3 ports on the rear next to the SCV's?
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