Service and Repair Manual April 2018Jib Boom Components46 ZX®-135/70 Part No. 1279835GT4 Remove the pin retaining fasteners from thejib boom lift cylinder rod-end pivot pin. Use asoft metal drift to remove the pin and let thecylinder hang down.5 Attach a lifting strap from an overhead craneto the barrel end of jib boom lift cylinder.6 Remove the pin retaining fasteners from thejib boom lift cylinder barrel-end pivot pin. Usea soft metal drift to remove the pin.7 Remove the jib boom lift cylinder from themachine.Crushing hazard. The jib boomlift cylinder may becomeunbalanced and fall when it isremoved from the machine if it isnot properly supported by theoverhead crane.3-4Jib Boom Level CylinderHow to Remove the Jib BoomLevel CylinderNote: Perform this procedure with the boom in thestowed position.Note: When removing a hose assembly or fitting,the O-ring (if equipped) on the fitting and/or hoseend must be replaced. All connections must betorqued to specification during installation. Refer toSpecifications, Hydraulic Hose and Fitting TorqueSpecifications.1 Extend the primary boom until the jib boomlevel cylinder barrel-end pivot pin isaccessible.2 Raise the jib boom above horizontal.3 Attach an overhead crane to the jib boomassembly for support.4 Place a block under the jib boom level cylinderfor support. Protect the cylinder rod fromdamage.5 Remove the pin retaining fasteners from thejib boom level cylinder rod-end pivot pin. Use asoft metal drift to remove the pin.Crushing hazard. The jib boomcould fall if not properlysupported when the jib boomlevel cylinder rod-end pivot pin isremoved.
