3 - 26 Z-45/25 Bi-Energy • Z-45/25J Bi-Energy Part No. 237062September 2015Section 3 • Scheduled Maintenance ProceduresB-16Check the Electrical ContactorsMaintaining the electrical contactors in goodcondition is essential to safe machine operation.Failure to locate a worn or damaged contactorcould result in an unsafe working condition andcomponent damage.1 Remove the drive chassis cover from thenon-steer end of the machine and locate theelectrical contactors mounted on thecomponent mounting panel.2 Visually inspect the contact points of eachcontactor for the following items:• Excessive burns• Excessive arcs• Excessive pittingElectrocution/burn hazard. Contactwith hot or live circuits could resultin death or serious injury. Removeall rings, watches and otherjewelry.Note: Replace the contactors if any damage isfound.B-17Perform Hydraulic Oil AnalysisReplacement or testing of the hydraulic oil isessential for good machine performance andservice life. Dirty oil and suction strainers maycause the machine to perform poorly andcontinued use may cause component damage.Extremely dirty conditions may require oil changesto be performed more often.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.CHECKLIST B PROCEDURES
