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Posted by John Gaukel on Sunday, March 14, 2010:In Reply to: 4020 hydraulic problem posted by Mike on Sunday, February 08, 2004:
Have a 1967 4020 Powershift. When the 3 point arms are lowered, there is a whistling or whining noise. The noise goes away when the arms are raised. Have had a JD tech rebuild the rock shaft valves and adjust. Still have the noise. Any suggestions?
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