Service and Repair Manual April 2018Boom Components54 ZX®-135/70 Part No. 1279835GT10 Remove the retaining fasteners from the cabletrack guide at the platform end of the boom.Remove the cable track guide from themachine.11 Place blocks between the upper and lowercable tracks and secure the upper and lowertracks together.Crushing hazard. If the upperand lower cable tracks are notproperly secured together, thecable track could becomeunbalanced and fall whenremoved from the machine.12 Remove the hose and cable clamps from theprimary boom lift cylinder.13 At the counterweight end of the secondaryboom, support and secure the secondaryboom lower end cover to a suitable liftingdevice.14 Remove the cover retaining fasteners andremove the cover from the end of thesecondary boom.Crushing hazard. The secondaryboom lower end cover couldbecome unbalanced and fallwhen removed from thesecondary boom if not properlysupported and secured to thelifting device.15 Locate the two hydraulic hoses inside the endof the secondary boom that lead to the primaryboom cable track.16 Tag, disconnect and plug the hydraulic hosesfrom the unions. Cap the fittings on the unions.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.17 Disconnect the electrical connectors for theelectrical cables that lead to the cable track atthe end of the secondary boom.18 Pull all hydraulic hoses and electrical cablesthat lead to the cable track out of thesecondary boom riser.Component damage hazard.Cables and hoses can bedamaged if they are kinked orpinched.19 Attach a lifting strap to each end of the cabletrack from an overhead crane for support. Donot apply any lifting pressure.
