OEM Cadillac XLR Brake Disc

Cadillac XLR Brake Disc Parts and Q&A

• Rotor
  89060328
  Q: How to replace the front brake disc on Cadillac XLR?

  A:

  You must lift the vehicle for support before removing the tire assembly and wheels. Apply a c-clamp on the brake caliper to push down the Piston until the caliper moves away from the Brake Disc before you remove the c-clamp. Secure the brake caliper using heavy mechanic wire to shield the hydraulic flexible brake hose from harm. After unbolt the caliper bracket while keeping the brake flexible hose intact, carefully remove the brake caliper assembly keeping the hose under no tension. You should verify that the Brake Disc lines up with the wheel studs before removing it. Use the cleaning tools j 42450-a to eliminate rust and debris from the hub/axle flange and j 41013 to clean the Brake Disc. Look for debris on the mating surfaces before you install the new Brake Disc by aligning it with the matchmark. After repairing brakes utilizing the disc check its assembled lateral runout (LRO) for proper functioning. Adjustments should be made to bring it within specified limits. After installing the brake caliper and bracket assembly to the suspension knuckle you can reinstall the tire and wheel assembly. After lowering the vehicle you can perform pad and disc burnishing when required.
• Rotor
  88955509
  Q: How to service and repair the Brake Disc using the J 41013 and J 42450-A kits on Cadillac XLR?

  A:

  For Brake Disc service and repairs use both the j 41013 disc resurfacing kit (J 41013) and the j 42450-a Wheel Hub resurfacing kit (J 42450-A). Regular maintenance of disc brake discs excludes any disc refinishing or new disc refinishing procedures. Refinishing procedures must be conducted on discs exhibiting adequate thickness and specific defects including excessive thickness variation or corrosion, cracks, blueing discoloration or scoring beyond maximum specifications. Use the j 42450-a to clean hub/axle flange and Brake Disc mating surfaces before proceeding to disc refinishing with the j 41013. Examine mating surfaces of the disc then place the disc onto the brake lathe and verify that all attachments are free from contaminants. Put the lathe into motion while you introduce the cutting tools onto the disc friction surfaces to check for a proper mounting by examining the witness mark. Follow the manufacturer's instructions to refinish the disc while inspecting the thickness after each cutting operation before possible re-mounting. The disc needs replacement once the minimum allowable thickness gets exceeded during the refinishing process. Applying a non-directional finish demands the use of 120 grit aluminum oxide sandpaper as a non-directional finishing tool or 150 grit aluminum oxide sandpaper with a sanding block while following the recommended speed settings. Clean the frictive areas with denatured alcohol or approved brake cleaner followed by disc removal from the lathe and lro measurement to confirm proper disc brake function with necessary adjustments for exceedances in specifications.