Section 4 • Repair ProceduresPart No. 122985 S-80 • S-85 • S-80X 4 - 69February 20126 Remove the lug nuts. Remove the tire andwheel assembly.7 Remove the hydraulic hose clamp retainingfastener from the top of the yoke pivot pin.8 Remove the drive motor mounting fasteners.9 Slide the drive motor shaft out of the drive huband remove the drive motor from the machine.10 Remove the pin retaining fasteners from theupper and lower yoke pivot pins.11 Support and secure the yoke and drive hubassembly to a lifting jack.12 Use a slide hammer to remove the upper yokepivot pin. Use a soft metal drift to drive thelower yoke pivot pin down and out.Crushing hazard. The yoke anddrive hub assembly could becomeunbalanced and fall when the yokepivot pins are removed if notproperly supported and secured tothe lifting jack.13 Place the yoke and drive hub assembly on a flatsurface with the drive hub facing down.14 Remove the drive hub mounting fasteners thatattach the drive hub to the yoke. Remove theyoke from the drive hub. Refer toSection 2,Specifications.Note: Replace the thrust washer when installingthe yoke and drive hub assembly onto the axle.4WD Steer Axle Components12-1Yoke and Drive HubHow to Remove the Yokeand Drive Hub AssemblyNote: 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 pin retaining fasteners from boththe steer cylinder and the tie rod cylinder pivotpins. Remove the pins.2 Tag, disconnect and plug the hydraulic hosesfrom the drive motor. Cap the fittings on thedrive motor.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.3 Loosen the wheel lug nuts. Do not removethem.4 Block the non-steer wheels, and center a liftingjack of ample capacity under the steer axle.5 Raise the machine approximately6 inches / 15 cm and place blocks under thechassis for support.
