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Message: <blockquote data-quote="agb1758c" data-source="post: 57128" data-attributes="member: 2946"><p>I have a older L555 (SN624325), the boom would slowly raise in the lowering pedal position and lower in the raise position. While working on it and testing the hydraulics the aluminum gear housing on the small hydraulic pump split. Prior to the housing split, I had replaced both filters, clean screen filter and drained and replaced hydraulic fluid. What would cause the pedals to reverse their function? Could the control valve bypassing cause this? I am figuring the housing split from wear or could it be from over pressuring? Machine has approx 3600 hrs on it and because of work injury it has been sitting 1 1/2yrs. Any suggestions and help would be greatly appreciated, never know how much you miss these machines until they breakdown.</p></blockquote><p></p>