REV DSection 3 • Scheduled Maintenance ProceduresPart No. 82259 GS-3384 3 - 31September 2005B-17Perform Hydraulic Oil AnalysisReplacement 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.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. See E-1,Test or Replace the Hydraulic Oil.B-18Replace the Medium and HighPressure Hydraulic FilterElementsReplacing the medium pressure hydraulic filterelement is essential to good machine performanceand service life. A dirty or clogged filter elementmay cause the machine to perform poorly andcontinued use may cause component damage.Extremely dirty conditions may require that thefilter element be replaced more often.Bodily injury hazard. Beware ofhot oil. Contact with hot oil maycause severe burns.Perform this procedure with theengine off.1 Release the latches on the engine tray and fullyslide the engine tray out.2 Insert a 6 inch / 15 cm screwdriver or rod intothe engine tray lock hole located near theengine tray roller wheels to prevent the enginetray from moving.3 Locate the medium pressure hydraulic filtermounted on the side of the engine near thepump.4 Remove the filter housing using a wrench onthe nut provided on the bottom of the housing.5 Remove the filter element from the housing.CHECKLIST B PROCEDURES
