OEM 2003 Buick LeSabre Brake Disc

2003 Buick LeSabre Parts Questions & Experts Answers

• Q: How to Service and Repair the Brake Disc Using an On-Car Lathe on 2003 Buick LeSabre?

  A: The first step to service brake rotor/disc with an on-vehicle lathe requires moving all rotating components such as brake rotor away from the caliper and caliper bracket. During the service and repair procedure of the brake rotor/disc with an on-vehicle lathe remove both the conical brake rotor washers (J 45101-100) and the lug nuts previously installed during assembled lro measurements. Check the hub/axle flange mounting surface as well as the brake rotor for foreign particles or debris. The technician sets up the lathe following manufacturer instructions to refinish the brake rotor while also checking brake rotor thickness at each refinement step. Replacement of the brake rotor becomes required once its minimum allowable thickness exceeds during the refinish specification check. To complete the refinishing process use non-directional finishing equipment at brake lathe manufacturer-settings while working with either 120-grit aluminum oxide sandpaper on a non-directional finishing tool or a 150-grit sanding block with aluminum oxide paper. Each brake rotor friction surface needs cleaning with denatured alcohol or approved brake cleaner as an equivalent. Measure the assembled lro of the brake rotor as soon as you remove the lathe device from the vehicle. Exceeding maximum allowable specifications during measurement requires immediate corrective actions. The brake caliper installation should begin following brake pedal depression to lock the rotor position; once satisfied repeat the pedal depression. Then remove the conical brake rotor washers (J 45101-100) and lug nuts.