Part No. 122985 S-80 • S-85 • S-80X 3 - 29Section 3 • Scheduled Maintenance ProceduresFebruary 2012CHECKLIST B PROCEDURESB-13Test the Ground ControlOverrideGenie specifications require that this procedure beperformed every 250 hours or quarterly, whichevercomes first.A properly functioning ground control override isessential to safe machine operation. The groundcontrol override function is intended to allow groundpersonnel to operate the machine from the groundcontrols whether or not the red Emergency Stopbutton at the platform controls is in the on or offposition. This function is particularly useful if theoperator at the platform controls cannot return theboom to the stowed position.1 Push in the red Emergency Stop button at theplatform controls to the off position.2 Start the engine from the ground controls.3 At the ground controls, operate each boomfunction through a partial cycle.Result: All boom functions should operate.B-14Test the Platform Self-levelingGenie specifications require that this procedure beperformed every 250 hours or quarterly, whichevercomes first.Automatic platform self-leveling throughoutthe full cycle of boom raising and lowering isessential for safe machine operation. Theplatform is maintained at level by the platformleveling slave cylinder which operates in a closedloop hydraulic circuit with the master cylinderlocated at the base of the boom.A platform self-leveling failure creates an unsafeworking condition for platform and groundpersonnel.1 Start the engine from the ground controls.2 Hold the function enable toggle switch to eitherside and adjust the platform to a level positionusing the platform level toggle switch.3 Raise and lower the boom through a full cycle.Result: The platform should remain level atall times to within ±5 degrees.
