Service Manual February 2017Checklist E Procedures68 S-80 • S-85 • S-80X Part No. 1259369GTE-1Test or Replace the Hydraulic OilGenie specifications require that this procedure beperformed every 2000 hours or every two years,whichever comes first.Perform this procedure more often if dustyconditions exist.Replacement or testing of the hydraulic oil isessential for good machine performance andservice life. Dirty oil and a clogged suction straineror hydraulic filters may cause the machine toperform poorly and continued use may causecomponent damage. Extremely dirty conditionsmay require oil changes to be performed morefrequently.Note: Before replacing the hydraulic oil, the oil maybe tested by an oil distributor for specific levels ofcontamination to verify that changing the oil isnecessary. If the hydraulic oil is not replaced at thetwo year inspection, test the oil quarterly. Replacethe oil when it fails the test.Note: When removing a hose assembly or fitting,the O-ring (if equipped) on the fitting and/or hoseend must be replaced. All connections must betorqued to specification during installation. Refer toSpecifications, Hydraulic Hose and Fitting TorqueSpecifications.Note: Perform this procedure with the boom in thestowed position.1 Remove the fuel tank. Refer to RepairProcedure, How to Remove the Fuel Tank.2 Models without hydraulic tank shutoffvalves: Remove the drain plug from thehydraulic tank and completely drain the tankinto a suitable container. Refer toSpecifications, Machine Specifications.Models with hydraulic tank shutoff valves:Close the two hydraulic tank valves located atthe hydraulic tank.open closedComponent damage hazard.The engine must not be startedwith the hydraulic tank shut-offvalves in the closed position orcomponent damage will occur. Ifthe tank valves are closed,remove the key from the keyswitch and tag the machine toinform personnel of thecondition.3 Remove the drain plug from the hydraulic tankand completely drain the tank into a containerof suitable capacity. Refer to Specifications,Machine Specifications.4 Tag, disconnect and plug the two suctionhoses that are attached to the hydraulic tankshutoff valves.5 Disconnect and plug the T-fitting located at thereturn filter with the two hoses connected to it.Cap the fitting on the return filter housing.
