February 2017 Service ManualChecklist B ProceduresPart No. 1259369GT S-80 • S-85 • S-80X 37B-10Check the Oscillate DirectionalValve LinkageGenie specifications require that this procedure beperformed every 250 hours or quarterly, whichevercomes first.Proper axle oscillation is essential to safe machineoperation. If the oscillate directional valve linkage isnot operating correctly, the stability of the machineis compromised and it may tip over.1 Remove the drive chassis cover from thenon-steer end of the machine.2 Locate the oscillate directional valve inside ofthe non-steer axle and inspect the linkage forthe following:• Lock nut is tight against yoke• Yoke clevis pins are installed• Cotter pins are installed through clevis pins• Linkage is properly attached to directionalvalveB-11Test the Ground Control OverrideGenie 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 allowground personnel to operate the machine from theground controls whether or not the EmergencyStop button on the platform controls is in the on oroff position. This function is particularly useful if theoperator at the platform controls cannot return theboom to the stowed position.1 Push in the platform red Emergency Stopbutton to the off position.2 Turn the key switch to ground controls.3 Pull out the red Emergency Stop button to theon position at the ground controls.4 From the ground controls, operate each boomfunction through a partial cycle.Result: All boom functions should operate.5 From the platform, activate the foot switch andoperate each boom function.Result: No boom functions operate.6 Pull out the red Emergency stop button to theon position at the platform controls.7 Activate the foot switch and operate eachboom function.Result: No boom functions operate.
