Section 4 • Repair Procedures January 20134 - 96 GS-84 • GS-90 Part No. 8479310-1Drive Motor and BrakeHow to Remove a Drive Motorand BrakeComponent damage hazard.Repairs to the motor should onlybe performed by an authorizedSundstrand-Sauer dealer.Component damage hazard. Thework area and surfaces where thisprocedure will be performed mustbe clean and free of debris thatcould get into the hydraulic systemand cause severe componentdamage. Dealer service isrecommended.Note: When removing a hose assembly or fitting,the O-ring on the fitting and/or hose end must bereplaced and then torqued to specification duringinstallation. Refer to Section 2, Hydraulic Hose andFitting Torque Specifications.1 Block the steer wheels.2 Tag, disconnect and plug the hydraulic hosesfrom the drive motor and brake. Cap the fittingson the drive motor and brake.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 Remove the drive motor mounting fasteners.4 Slide the drive motor shaft out of the brake andremove the drive motor from the machine.5 Remove the brake from the drive hub.Note: There are two O-rings on the drive motorand brake assembly. One is installed between thebrake and drive hub and another between thebrake and drive motor. Be sure that both O-ringsare in place when installing the brake and drivemotor onto the machine.Mounting bolt torque specificationsDrive motor to drive hub, dry 75 ft-lbs102 NmDrive motor to drive hub, lubricated 56 ft-lbs76 NmNon-steer Axle Components
