OEM Buick Terraza Brake Disc

Buick Terraza Brake Disc Parts and Q&A

• Brake Rotor, Front
  19303815
  Q: How to replace the front brake disc on Buick Terraza?

  A:

  Start replacement of front Brake Disc work by properly raising and holding the vehicle. After taking off the tire and wheel set place your c-clamp across the brake piston to gently push it into the brake caliper unit until that part can separate from the disc. Hang the brake caliper in place with heavy mechanic wire as you disassemble the unit to avoid damaging the flexible brake hose. Loosen caliper bracket bolts yet keep the brake flexible hose attached before taking off the brake caliper mounted unit from the suspension knuckle. Reverse the retaining screw and the Brake Disc comes off. Wipe away rust and dirt from the hub/axle flange and Brake Disc contact surfaces using wheel hub resurfacing kit (J 42450-A) and rotor resurfacing kit (J 41013). Check both surfaces before you put the new Brake Disc on the hub/axle flange. Test the Brake Disc's assembled lateral runout to verify its performance quality and adjust it when the level surpasses approved limits. After mounting the Brake Disc place the retaining screw and fasten it tightly at 10 nm (89 inch lbs). Reinstall the brake caliper assembly on the suspension knuckle before putting back the tire and wheel assembly. Lower the vehicle and perform needed pad and disc burnishing.
• Rotor
  88964180
  Q: What Tools Are Required to Service and Repair the Brake Disc, and What Are the Steps Involved in the Refinishing Process on Buick Terraza?

  A:

  You need both the Disc Resurfacing Kit (J 41013) and Wheel Hub Resurfacing Kit (J 42450-A) to repair and service the brake disc. During regular brake work disc brake discs should stay unchanged because they do not need refurbishing and new discs remain fresh. Reconditioning only happens when there is enough material available on the disc and when its condition shows uneven thickness plus severe rust marks or surface cracks. First clean rust and debris from the hub and axle flange plus brake disc surfaces through J42450-A Wheel Hub Resurfacing Kit and J41013 Disc Resurfacing Kit. Test the disc's attaching area and clean all related tools before setting the disc onto the brake lathe. Test how the cutting tools touch the disc's surface as you run the lathe to show that it has been installed correctly. Adhere to lathe producer guidelines when redoing the disc and test its thickness after each jet of the grinder. You need to replace the disc whenever refinishing does not lower its total thickness into allowed levels. Apply the recommended finish speed and use aluminum oxide sandpaper of 120 or 150 grit to reach non-directional results. Clean the friction surfaces using denatured alcohol or authorized brake cleaner. Check the assembled lateral runout values to optimize brake performance. Make adjustments until the runout measurements reach specified levels.