Section 3 • Scheduled Maintenance Procedures January 20133 - 42 GS-84 • GS-90 Part No. 84793E-1Test or Replace the HydraulicOilGenie specifications require that this procedure beperformed every 2000 hours or every two years,whichever comes first.Replacement or testing of the hydraulic oil isessential for good machine performance andservice life. Dirty oil and suction strainers maycause the machine to perform poorly and continueduse may cause component damage. Extremelydirty conditions may require oil changes to beperformed more frequently. Refer to Section 2,Specifications.Component damage hazard. Thework area and surfaces where thisprocedure will be performed mustbe clean and free of debris thatcould get into the hydraulicsystem.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 atthe two year inspection, test the oil quarterly.Replace the oil when it fails the test.Note: When removing a hose assembly or fitting,the O-ring on the fitting and/or hose end must bereplaced and then torqued to specification duringinstallation. Refer to Section Two, Hydraulic Hoseand Fitting Torque Specifications.Note: In extreme cold conditions, 20°F / -6°C andbelow, warm the engine for 5 minutes beforeoperating to prevent hydraulic system damage.Checklist E Procedures1 Turn the key switch to ground controls and pullout the red Emergency Stop buttons to the onposition at both the ground and platformcontrols.2 Start the engine.3 Raise the platform approximately 18 feet / 5.5 mfrom the ground.4 Release the safety arm latch, lift the safety armand rotate to a vertical position. Lock the safetyarm in position.Note: Be sure that the safety arm is locked in thevertical position.5 Lower the platform onto the safety arm and turnthe engine off.Crushing hazard. Keep hands clearof the safety arm when loweringthe platform.6 Attach a lifting strap from an overhead crane tothe entry ladder on the hydraulic tank side of themachine.7 Remove the entry ladder mounting fasteners andremove the entry ladder from the machine.Crushing hazard. The entry laddercould become unbalanced and fallwhen removed from the machine ifnot properly supported.8 Remove the retaining fasteners from the accessplate located behind the hydraulic and fuel tanktray and remove the access plate from themachine.
