April 2018 Service and Repair ManualBoom ComponentsPart No. 1287209GT GTH-636 21Note: During removal, the overhead crane strap willneed to be adjusted for proper balancing.1 Extension chain anchors2 Retract chain anchor15 Working at the fork end of the boom, removethe wear pads from boom tube number 1.16 Support and slide boom tube number 2 out ofboom tube number 1. Place boom tubenumber 2 on a structure capable of supportingit.Crushing hazard. Boom tubenumber 2 could becomeunbalanced and fall whenremoved from the boom tubenumber 1 if not properlysupported and attached to theoverhead crane.Note: During removal, the overhead crane strap willneed to be adjusted for proper balancing.1-2Boom Lift CylinderHow to Remove the Lift CylinderNote: 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 Attach a lifting strap from an overhead 10 ton /10,000 kg crane to the fork end of the boom.Support the boom. Do not apply any liftingpressure.2 Tag, disconnect and plug the hydraulic hosesat the lift cylinder manifold. Cap the fittings.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.Component damage hazard.Hoses can be damaged if theyare kinked or pinched.Attach a lifting strap from an overhead crane to therod end of the lift cylinder. Support the cylinder. Donot apply any lifting pressure.3 Remove the fasteners securing the lift cylinderbarrel-end pivot pin to the chassis.
