Eaton Hydrowa Instruction Manual

Instruction ManualPage 17Do NOT open or disassemble any parts of the hydraulic systemwhen it’s pressurised!9 Service manual9.1 Troubleshooting list of most common malfunctionsProblem Possible cause ActionExtendingCylinder extends too fast,does not extend at all,extends too slow orextends in spurtsSide load due tomisalignmentbetween cylinder andloadCheck alignment of rod with loadCheck if side load does not exceeddesign variables.Oil pressure insystem is too lowAdd oil to hydraulic systemCheck couplings and valvesAir trapped in system Remove air from system (read§5.6)SystemcontaminatedCheck wiper. Protect piston rodarea from direct contact withcontaminator.Clean and flush the entire hydraulicsystem.When cylinder is contaminated thecylinder must be cleaned andresealedCylinder pistonbindingCheck filters and connections.Cylinder pistonbindingHave equipment serviced by anauthorised EATON service centre.Inside diameter ofthe hose is too small.Use a hydraulic hose with a widerinside diameter. Contact Eaton forspare parts.Oil flow to cylinder isblockedCheck couplings and valves arecorrectly connected, fully tightenedand valves are functioning properly.PressureCylinder extends andretracts but does not holdpressureLeaking oilconnectionCheck that all connections arecorrectly connected and fullytightenedLeaking seals Check piston rod for damages thatcould damage the piston rod seals.Locate leaks and have equipmentserviced by an authorised EATONservice centre.No cause can befound or no technicalknowledge availableto correct problem.Have equipment serviced by anauthorised EATON service centre