On-The-Vehicle - aesco

On-The-VehicleBrake Rotor Inspection7.0 Before attempting any resurfacing, rotorinspection is necessary. Determine the manufacturer’srotor specifications from an approved specificationguide.7.2 Attach a dial indicator to the vehicle and recordthe rotor runout. Refer to DIAL INDICATOR ASSEM-BLY AND SET UP on page 10.7.1 Using an AMMCO ® model 2780 digital micrometer(p/n 902780) or other rotor-measuring tool, recordthe thickness of the rotor. Observe any deep scoresand gouges, as this depth will also need to berecorded.7.3 Determine if the total amount of material to beremoved will meet the manufacturer’s minimum specifications,if not a new rotor will be required. In allcases, a new rotor must be inspected for runout andsometimes resurfaced to meet manufacturer’s specifications.Note: Be aware that all vehicle manufacturers have aminimum “machine to” and a “discard” thickness.12 • AMMCO 800 On-The-Vehicle Brake Lathe