3 - 22 Z-80/60 Part No. 88619June 2011Section 3 • Scheduled Maintenance ProceduresREV GB-3Test the Key SwitchProper key switch action and response is essentialto safe machine operation. The machine can beoperated from the ground or platform controls andthe activation of one or the other is accomplishedwith the key switch. Failure of the key switch toactivate the appropriate control panel could causea hazardous operating situation.1 Pull out the red Emergency Stop button to theon position at both the ground and platformcontrols.2 Turn the key switch to ground control, start theengine and then turn the key switch to platformcontrol.3 Check all machine function from the groundcontrols.Result: All machine functions should notoperate.4 Turn the key switch to ground control.5 Check all machine function from the platformcontrols.Result: All machine functions should notoperate.6 Turn the key switch to the off position.Result: The engine should stop and nofunctions should operate.B-4Check the Exhaust SystemMaintaining the exhaust system is essential togood engine performance and service life.Operating the engine with a damaged or leakingexhaust system can cause component damageand unsafe operating conditions.Bodily injury hazard. Do notinspect while the engineis running. Remove the key tosecure from operation.Bodily injury hazard. Beware ofhot engine components. Contactwith hot engine components maycause severe burns.1 Remove the engine tray retaining fastener.Swing the engine tray out away from themachine.a engine tray anchor holeb engine tray retaining fastenerCHECKLIST B PROCEDURES
