Section 3 • Scheduled Maintenance Procedures January 20133 - 26 GS-84 • GS-90 Part No. 84793CHECKLIST B PROCEDURESB-17Perform Hydraulic Oil AnalysisGenie specifications require that this procedure beperformed every 250 hours or quarterly, whichevercomes first.Replacement or testing of the hydraulic oil isessential for good machine performance andservice life. Dirty oil and a clogged suction strainermay cause the machine to perform poorly andcontinued use may cause component damage.Extremely dirty conditions may require oil changesto be performed more often. Refer to Section 2,Specifications.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. See E-1,Test or Replace the Hydraulic Oil.B-18Inspect the Fuel and HydraulicTank Cap Venting SystemsGenie specifications require that this procedure beperformed every 250 hours or quarterly, whichevercomes first. Perform this procedure more often ifdusty conditions exist.Free-breathing fuel and hydraulic tank caps areessential for good machine performance andservice life. A dirty or clogged tank cap may causethe machine to perform poorly and continued usemay cause component damage. Extremely dirtyconditions may require that the caps be inspectedmore often.Explosion and fire hazard. Enginefuels are combustible. Perform thisprocedure in an open, well-ventilated area away from heaters,sparks, flames and lightedtobacco. Always have an approvedfire extinguisher within easy reach.Note: Perform this procedure with the engine off.1 Remove the cap from the fuel tank.2 Check for proper venting.Result: Air passes through the fuel tank cap.Proceed to step 4.Result: If air does not pass through the cap,clean or replace the cap. Proceed to step 3.Note: When checking for positive tank cap venting,air should pass freely through the cap.
