4 - 132 S-100 • S-105 • S-120 • S-125 Part No. 102916June 2011Section 4 • Repair ProceduresREV AMeasure the circle-end tires:3 Press the square-end steer mode button.4 Measure the distance between the inside of onecircle-end tire and the chassis side plate onboth sides of the axle.Result: Both measurements should be thesame to indicate that the tires are parallel withthe chassis.Note: If the measurements are different or if a tireis not parallel with the chassis, the steer sensor ofthat tire will need to be adjusted. SeeHow to Adjusta Steer Sensor.5 Repeat step 4 for the other circle-end tire.Axle Components13-1Steer SensorsThe steer sensor measures steer angle andcommunicates that information to the groundcontrols ECM. The steer sensor on the groundcontrols side of the machine at the square end actsas the lead sensor. The other three sensors followthe position, or steer angle, of the lead sensor.There is a steer sensor mounted to the top of eachupper yoke pivot pin.Note: If the square-end steering function becomesinoperative, switch to circle-end steer mode and theground controls side circle-end steer sensor willbecome the lead sensor.Note: This procedure will require a minimum of twopeople.Note: Perform this procedure with the axlesextended.How to Measure the TireAlignment1 Start the engine from the platform controls.2 Press down the foot switch and push the engineidle select button until the engine switches tohigh rpm.
