Genie GR-12 Service Manual

Contents

Genie GR-12 Service Manual Manual pdf 46 page image

Section 3 • Scheduled Maintenance ProceduresREV ANovember 20053 - 30 GR-12 • GR-15 • GR-20 Part No. 84700Checklist E ProcedureE-1Test or Replace the Hydraulic OilReplacement or testing of the hydraulic oil isessential for good machine performance andservice life. Dirty oil may cause the machine toperform poorly and continued use may causecomponent damage. Extremely dirty conditionsmay require oil changes to be performed moreoften.Before replacing the hydraulic oil,the oil may be tested by an oildistributor for specific levels ofcontamination to verify thatchanging the oil is necessary. Ifthe hydraulic oil is not replacedat the two year inspection, testthe oil quarterly. Replace the oilwhen it fails the test.Perform this procedure with theplatform in the stowed position.1 Disconnect the battery pack from the machine.Electrocution hazard. Contactwith hot or live circuits couldresult in death or serious injury.Remove all rings, watches andother jewelry.2 Open the power unit module tray.3 Tag and disconnect the hydraulic tank returnhard line from the hydraulic filter head andremove the hard line from the tank. Cap thefitting on the filter head.4 Tag and disconnect the hydraulic pump inlethard line and remove the hard line from thetank. Cap the fitting on the pump.5 Remove the hydraulic tank retaining fastenersand remove the hydraulic tank from themachine.6 Drain all of the oil into a suitable container.Refer to Section 2, Specifications, for capacityinformation.Bodily injury hazard. Sprayinghydraulic oil can penetrate andburn skin. Loosen hydraulicconnections very slowly to allowthe oil pressure to dissipategradually. Do not allow oil to squirtor spray.7 Clean up any oil that may have spilled. Properlydiscard the used oil.8 Clean the inside of the hydraulic tank using amild solvent. Allow the tank to dry completely.9 Install the hydraulic tank and install and tightenthe hydraulic tank retaining fasteners. Torque tospecification.Torque specificationsHydraulic tank retaining fasteners, dry 35 in-lbs4 NmHydraulic tank retaining fasteners, lubricated 26 in-lbs2.9 Nm