Untitled - Flannery Plant Hire

TROUBLESHOOTING5. Hydraulic SystemAfter the machine has been kept stowed for a long time,air in the oil may be separated and accumulate in theupper section in the cylinder, causing slow responsetime in operation or reducing cylinder power. In casethese symptoms appear, repeatedly operate all actuatorsseveral times.Problem Cause SolutionAll actuators of front attachment,swing, and travel will Low hydraulic oil levelRefill.Faulty hydraulic pump* Repair and replacenot operate. (Hydraulic pumpBroken suction pipe and/or hose * Repair and replacenoise level increased.)All actuators of front attachment,swing, and travel willnot operate. (Hydraulic pumpnoise level unchanged.)All actuators are weak inpower.Inoperable or weak in poweronly when one control lever isoperated.Only one movement is inoperable.Only one cylinder is inoperable.Faulty pilot pumpFaulty solenoid valvePilot control shut-off lever is in theLOCK positionReduced pump performance due towear in hydraulic pumpReduced set pressure of main reliefvalve in control valveLow hydraulic oil levelClogged suction strainer in hydraulicoil tankDrawn air from suction sideFaulty relief valve in control valveBroken pipe and/or hoseLoose pipe line jointBroken O-ring at pipe line jointFaulty hydraulic pumpFaulty pilot valveFaulty pilot pipe lineFaulty solenoid valve of pilot lineBroken control valve spoolSeized foreign matter in valve spoolBroken pipe and/or hoseLoose pipe line jointBroken O-ring at pipe line jointBroken actuatorFaulty pilot valveFaulty pilot pipe lineFaulty solenoid valve of pilot lineBroken oil seal in cylinderOil leak due to broken cylinder rod.Faulty pilot valveFaulty pilot pipe lineFaulty solenoid valve of pilot line* Replace* ReplaceMove to the UNLOCK position.* Replace* AdjustRefillCleanRetighten* Repair and replace* Repair and replaceRetighten* Replace* Repair and replace* Replace* Repair and replace* Repair and replace* Replace* Repair and replace* Repair and replaceRetighten* Replace* Repair and replace* Replace* Repair and replace* Repair and replace* Repair and replace* Repair and replace* Replace* Repair and replace* Repair and replace11-3