Q: How to replace the front brake disc on Cadillac CTS?
A: You need to lift and place support under the vehicle before starting the front Brake Disc replacement work. Take off the wheel and tire combination. Always tie down the brake caliper to heavy mechanic's wire or similar when working with the caliper separate from its mounting but connected to the hydraulic brake hose as improper caliper placement may damage the hose and create a brake fluid leak. Do not take apart the hydraulic brake flexible hose from the caliper while servicing. Pull the brake assembly from suspension knuckle while avoiding torque on hydraulic brake hose. Locate the Brake Disc to the wheel studs before you take out the brake mounting screw and disc. Wipe away rust and dirt from both sides of the hub/axle flange and Brake Disc using j 42450-a wheel hub resurfacing kit and j 41013 rotor resurfacing kit. Check the mating surface area to verify no dirt or fragments exist before moving forward. Install the Brake Disc properly due to its matchmark position before adding the Brake Disc mounting screw and tightening it to 14 nm (124 inch lbs.). After brake system work remove the Brake Disc and check the assembled disc lateral runout (LRO) to reach required performance levels. Adjust the Brake Disc when its measurements show beyond allowed tolerances. Attach the brake caliper assembly onto the suspension knuckle followed by fitting tire and wheel assembly and lifting the vehicle down then perform required Brake Pad and disc burnishing for new components.
Q: Why is burnishing the front brake disc and brake pad essential after servicing the disc brake system on Cadillac Escalade?
A: To achieve optimal brake system performance our technician needs to smooth both braking parts before any brake disc work on a vehicle. Start on a quiet road and drive up to 48 km/hour (30 mph) for brake burnishing. Be cautious not to heat up your brakes throughout this operation. Lightly push the brakes until you stop the vehicle smoothly to prevent brake locks. Perform this brake acceleration and stopping pattern about 20 times keeping adequate cooling time between sessions to help pad and brake disc surface smoothing.
Q: How to Properly Replace a Brake Disc on Cadillac XLR?
A: Start replacing the front Brake Disc by lifting and stabilizing your vehicle before taking off the wheel and tire set. Put a c-clamp tool j 41013 onto the caliper piston until it pushes into place enough to let the caliper slide from the disc surface. After that, remove the c-clamp. Holding up the brake caliper stops damage to its hydraulic flexible brake hose. Separate the caliper bracket bolts without disconnecting the brake flexible hose bolts and carefully take off the caliper unit with its bracket while keeping hydraulic tension off the flexible brake hose. Use the alignment marks to put the new Brake Disc on the wheel studs and take it off. Before adding the new disc you should clean rust and debris from the hub/axle flange using the Wheel Hub resurfacing kit (J 42450-A) and clean any contaminants found on the Brake Disc using the rotor resurfacing kit (J 41013). Put the new Brake Disc in place on the hub/axle flange and fit it based on the matching marks you have. Check the lateral runout of the assembled Brake Disc and adjust it when the measurement crosses manufacturer limits. Put back all parts in their original position except if you replaced or refinished the disc which needs a pad and disc burnishing process.