Q: How to replace the front brake disc on Buick LaCrosse?
A: Vehicle maintenance requires users to lift and stabilize the vehicle before they remove the tire and wheel assembly when replacing a front Brake Disc. A c-clamp should compress the Piston toward the caliper bore which lets the caliper slide away from the disc and then you can remove the c-clamp. After disconnecting the caliper bracket bolts the mechanic should remove the brake caliper and caliper mounting bracket assembly from the suspension knuckle while using heavy mechanic's wire for supportive equipment to avoid impacting the hydraulic brake hose. Mark the relationship between the Brake Disc and wheel studs before taking it off. The wheel hub resurfacing kit (J42450-A) should be used to clean rust or corrosion from the hub/axle flange before cleaning the Brake Disc mating surfaces with the rotor resurfacing kit (J41013). Before integrating the Brake Disc into the hub/axle flange check all mating surfaces are clear of debris then use the matchmark to establish proper disc orientation. Measure the lateral runout of the assembled Brake Disc after installation when possible and adjust if measurements exceed set specifications. Reinstall the brake caliper and bracket to the suspension knuckle before installing the tire and wheel assembly followed by lowering the vehicle and conducting pad and disc burnishing when Brake Disc replacement or refinishing took place.
Q: How to service and repair the Brake Disc using the J41013 and J42450-A kits on Buick LeSabre?
A: Begin the repair of the Brake Disc. Look at every disc Brake Disc to see if the surface is worn out, if there is lateral runout, and make sure it is still above the minimum allowed size after resurfacing. When refinishing because the parts are corroded, cracked, or scored beyond standards, fit the Brake Disc to the brake lathe as the manufacturer says, and check that everything is clean. Let the lathe run while you move the cutting tools toward the disc friction surfaces and look at the witness mark to make sure they are mounted properly. Use the manufacturer's guide to refinish the disc, keep checking the thickness after every cut, and fit a new disc if it gets too thin. You can get a non-directional finish by using the recommended speed and 120 grit aluminum oxide sandpaper if you have a non-directional tool, or with 150 grit sandpaper and a sanding block if you don't. Once you are done, wipe each friction surface with denatured alcohol or brake cleaner, then take the disc off the lathe.
Q: How to replace the front brake disc on Buick Regal?
A: Per instructions available in goodwrench brake parts cleaner kit (P/N 123777981), remove the protective coating from new disc friction faces by wiping with specialized cleaning solution and lint-free cloths. Never use gasoline, kerosene, or oil-based products that may contaminate the disc. Start by safely lifting the vehicle and detach the tire and wheel. Keep the brake caliper safe when you remove it from its mount without disconnecting the hydraulic brake hose through wire support. First secure the brake caliper and bracket as one unit using mechanic's wire. After that remove the Brake Disc from the vehicle. Remove all rust or foreign material from the wheel bearing flange and Brake Disc contact areas by using j 41013 disc resurfacing kit product. Install the new Brake Disc first and put on the caliper bracket afterward before replacing the tire and wheel which needs to be done below vehicle level.