June 2017 Service and Repair ManualJib Boom ComponentsPart No. 1268497 SX-180 353-1Jib BoomHow to Remove the Jib BoomNote: 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 Remove the platform. Refer to RepairProcedure, How to Remove the Platform.2 Remove the platform mounting weldment andthe platform rotator. Refer to RepairProcedure, How to Remove the PlatformRotator.3 Support the jib boom with a suitable liftingdevice.4 Tag, disconnect and plug the jib boom liftcylinder hydraulic hoses. Cap the fittings onthe cylinder.Bodily injury hazard. Sprayinghydraulic oil can penetrate andburn skin. Loosen hydraulicconnections very slowly to allowthe oil pressure to dissipategradually. Do not allow oil tosquirt or spray.5 Support the barrel end of the cylinder with asuitable lifting device.6 Remove the pin retaining fastener from the jibboom lift cylinder barrel-end pivot pin.7 Use a soft metal drift to remove the pin and letthe cylinder hang down.8 Attach a lifting strap from an overhead craneto the jib boom.9 Remove the pin retaining fastener from the jibboom pivot pin.10 Use a soft metal drift to remove the pin andremove the jib boom from the jib rotator.Crushing hazard. The jib boommay become unbalanced and fallwhen it is removed from themachine if it is not properlysupported by the overheadcrane.11 Remove the pin retaining fasteners from thejib boom lift cylinder rod-end pivot pin. Do notremove the pin.12 Attach a lifting strap from an overhead craneto the lug on the rod end of the jib boom liftcylinder.13 Use a soft metal drift to remove the jib boomlift cylinder rod-end pivot pin. Remove the jibboom lift cylinder from the jib boom bellcrank.Crushing hazard. The jib boomlift cylinder may becomeunbalanced and fall when it isremoved from the machine if it isnot properly supported by theoverhead crane.
