Terex Genie TZ-50 Service Manual

Also see for Genie TZ-50: Operator's manual

Part No. 824982 Genie TZ-50 4 - 45January 2016 Section 4 • Repair ProceduresPlatform Overload Components13-1Platform Overload SystemCalibrate the Platform OverloadSystem (if equipped)Note: Perform this procedure with the machine ona fi rm, level surface.1 At the ground controls, extend the outriggersuntil the axle is off the ground and the machineis level.2 Release the boom hold down latch and raisethe platform approximately 2 feet / 60 cm. Levelthe platform.3 Tag and disconnect the wire harness from theload sense limit switch.Note: The load sense limit switch is located nearthe platform support.4 Set a multi-meter to measure continuity.Connect the leads from the multi-meter to theblack and red wires disconnected from the limitswitch in step 3.5 Determine the maximum platform capacity.Refer to the machine serial plate.6 Using a suitable lifting device, place anappropriate test weight equal to that of themaximum platform capacity at the center of theplatform fl oor.Determine the limit switch trigger point:7 Gently move the platform up and down byhand, so it bounces 1 to 2 inches / 2.5 to 5 cm.8 Check the continuity between the black andred wires originating from the limit switch of theplatform overload assembly.Result: There is no continuity. Slowly tightenthe load spring adjustment nut by turning itclockwise just until the limit switch closes andshows continuity.Result: There is continuity. Slowly loosenthe load spring adjustment nut by turning itcounterclockwise just until the limit switchopens and shows no continuity.Note: The platform will need to be continuouslymoved up and down while making adjustments.Fine adjustment of the switch trigger point:9 Continue moving the platform up and down andadjust the load spring adjustment nut clockwiseor counterclockwise just until the limit switch isalternately opening and closing.Note: When the limit switch is adjusted correctly,there will be continuity slightly longer than nocontinuity.10 Remove the continuity tester from the limitswitch wires. Securely install the wires onto thelimit switch.