Section 4 • Repair ProceduresPart No. 122985 S-80 • S-85 • S-80X 4 - 11February 20122-3Platform RotatorThe platform rotator is a hydraulically activatedhelical gear assembly used to rotate the platform160 degrees.How to Remove thePlatform RotatorComponent damage hazard. Markthe platform mounting weldmentand the rotator flange beforeremoving the platform mountingweldment. The platform mountingweldment must be replaced in theexact same position on the rotatorflange as it was before removal. Ifa new rotator is installed or therotator is disassembled, properalignment can be achieved byrotating the rotator all the way tothe left and then installing theplatform mounting weldment allthe way in the left position.Note: When removing a hose assembly or fitting,the O-ring (if equipped) on the fitting and/or thehose end must be replaced. All connections mustbe torqued to specification during installation.Refer to Section 2,Hydraulic Hose and FittingTorque Specifications.1 Remove the platform. See 2-1,How to Remove the Platform.PLATFORM COMPONENTS2 Tag, disconnect and plug the hydraulic hosesfrom the platform rotator manifold. Cap thefittings on the rotator.Bodily injury hazard. Sprayinghydraulic oil can penetrate andburn skin. Loosen hydraulicconnections very slowly to allowthe oil pressure to dissipategradually. Do not allow oil to squirtor spray.3 S-85: Support the jib boom leveling arms andthe platform mounting weldment with anappropriate lifting device. Do not apply anylifting pressure.4 Remove the mounting bolts from the platformmounting weldment. Remove the center boltand slide the platform mounting weldment off ofthe platform rotator.Crushing hazard. The platformmounting weldment could becomeunbalanced and fall if not properlysupported when removed from themachine.5 Support the platform rotator with an appropriatelifting device. Do not apply any lifting pressure.S-80:6 Support the rod end of the platform levelingslave cylinder. Protect the cylinder rod fromdamage.7 Remove the pivot pin retaining fasteners fromboth the slave cylinder rod-end pivot pin andthe rotator pivot pin.
