Terex Genie ZX-135/70 Service Manual

Also see for Genie ZX-135/70: Maintenance manual Maintenance manual Maintenance manual Installation instructions Operator's manual

September 2015 Service ManualChecklist C ProceduresPart No. 218700 ZX-135/70 61C-6Test the Platform OverloadSystem (if equipped)Genie specifications require that this procedure beperformed every 500 hours or six months,whichever comes first OR when the machine failsto lift the maximum rated load.Testing the platform overload system regularly isessential to safe machine operation. Continued useof an improperly operating platform overloadsystem could result in the system not sensing anoverloaded platform condition. Machine stabilitycould be compromised resulting in the machinetipping over.The platform overload system is designed to detectan overloaded platform and prevent machineoperation anytime the machine is turned on. Whenactivated, the system halts all normal boomoperation, giving visual and audible warning to theoperator.Models equipped with the platform overload optionare provided with additional machine components:an adjustable spring-loaded platform supportsubassembly, a limit switch, an electronic modulewhich receives the overload signal and interruptspower, and an audio/visual warning indication toalert the operator of the overload.The platform support subassembly utilizes two loadsupport arms that are opposed in a fullparallelogram link. This isolates platform loads intoa shear or vertical state, which translates into acompressive load. A spring in the parallelogramlink supports this purely compressive loadregardless of where the load is placed in theplatform.As weight is added to the platform, the spring willcompress until, when the platform is overloaded,the lower arm contacts a limit switch and therebyactivating the overload signal. When adjustedcorrectly, the platform overload system willdeactivate normal boom operation at platformcapacity.Note: Perform this procedure with the boom fullyretracted and in the stowed position and with themachine on a firm, level surface.1 Remove all weight, tools, accessories andequipment from the platform.Note: Failure to remove all weight, tools andaccessories from the platform will result in aninaccurate test.2 Turn the key switch to ground control and pullout the red Emergency Stop button to the onposition at both the ground and platformcontrols. Start the engine from the groundcontrols and level the platform. Do not turn theengine off.3 Determine the maximum platform capacity.Refer to the machine serial plate.