4 - 12 S-60 • S-65 • S-60 HC Part No. 77828February 2012Section 4 • Repair Procedures2-3Platform Overload System,S-60 and S-65 (if equipped)How to Calibrate the PlatformOverload SystemCalibration of the platform overload system isessential to safe machine operation. Continued useof an improperly calibrated platform overloadsystem could result in the system failing to sensean overloaded platform. The stability of themachine is compromised and it could tip over.Note: For S-60 HC models, refer to RepairProcedure2-4, Platform Load Sense System, S-60HC.Note: Perform this procedure with the machine on afirm, level surface.1 Turn the key switch to platform control. Start theengine and level the platform.2 Determine the maximum platform capacity.Refer to the machine serial plate.3 Remove all weight, tools and accessories fromthe platform.Note: Failure to remove all weight, tools andaccessories from the platform will result in anincorrect calibration.4 Using a suitable lifting device, place a testweight equal to the maximum platform capacityat the center of the platform floor.5 Move the platform up and down by hand, so itbounces approximately 2.5 to 5 cm / 1 to 2inches. Allow the platform to settle.Result: The overload indicator lights are off andthe alarm does not sound. Proceed to step 6.Result: The overload indicator lights are flashingat the platform and ground controls, and thealarm is sounding. Slowly tighten the load springadjustment nut in a clockwise direction in 10°increments until the overload indicator lightturns off, and the alarm does not sound.Proceed to step 8.Note: The platform will need to be moved up anddown and allowed to settle between eachadjustment.Note: There may be a 2 second delay before theplatform overload indicator light and alarmresponds.6 Move the platform up and down by hand, so itbounces approximately 2.5 to 5 cm / 1 to 2inches. Allow the platform to settle.Result: The overload indicator lights are off atthe platform and ground controls, and the alarmdoes not sound. Slowly loosen the load springadjustment nut in a counterclockwise directionin 10° increments until the overload indicatorlight flashes at both the platform and groundcontrols, and the alarm sounds.Proceed to step 7.Result: The overload indicator lights are flashingat the platform and ground controls, and thealarm is sounding. Repeat this procedurebeginning with step 5.Note: The platform will need to be moved up anddown and allowed to settle between eachadjustment.Note: There may be a 2 second delay before theplatform overload indicator lights and alarmresponds.PLATFORM COMPONENTS
