OEM Chevrolet Cobalt Brake Disc

Chevrolet Cobalt Brake Disc Parts and Q&A

• Rotor, Front
  19303808
  Q: How to replace the front brake disc on Chevrolet Cobalt?

  A:

  The initial step for replacing a front rotor begins with elevating and supporting the vehicle. Use the c-clamp (J 41013) to place between the brake caliper's body and outboard disc Brake Pad at the back of the caliper body. After that move on to installing the c-clamp ends against the appropriate spots. A c-clamp (J 41013) should be tightened to compress the caliper piston so the caliper can move beyond the brake rotor before the clamp is taken off. Attach mechanic's heavy wire or its equivalent to the brake caliper whenever removal of its mounting bracket puts the hydraulic flexible brake hose at risk of damage. It is essential to leave the caliper connected to its hydraulic brake flexible hose at all times. First disconnect the brake caliper together with its mounting bracket from the Steering Knuckle while maintaining the hydraulic brake flexible hose tension-free. You should mark the brake rotor position in relation to its wheel studs before you take off the rotor. Use the wheel hub resurfacing kit (J 42450-A) and the rotor resurfacing kit (J 41013) to clean all rust and contaminants from the hub/axle flange and the brake rotor mating surfaces. Use matchmarks to orient the brake rotor correctly before installing it onto the hub/axle flange where no residual foreign objects are present. Measure the assembled lateral runout (LRO) of the brake rotor after installation if the rotor was part of a brake system repair work to verify optimal performance. Address any brake rotor specifications which exceed the set standards. To finish the repair process install the brake caliper along with the Brake Caliper Bracket as a set to the Steering Knuckle while also putting back the tire and wheel combination and lowering the automobile before conducting pad and rotor burnishing if necessary.
• Rotor, Red Line, Front
  19303829
  Q: What Tools Are Required to Service and Repair the Brake Disc, and What Steps Should Be Followed to Ensure Proper Refinishing on Chevrolet Cobalt?

  A:

  The job needs J 41013 Disc Resurfacing Kit and J 42450-A Wheel Hub Resurfacing Kit to perform brake disc repairs. You should make sure the brake disc has enough thickness above minimum standards during inspection and watch for other issues like uneven thickness, bad corrosion, cracks, or damaged surface that exceed specific measures. Apply the J 42450-A hub/axle cleaning tool to remove flange contamination first and then switch to the J 41013 to clean the brake disc surfaces. Fully clean both brake disc mating areas before securing each steel part onto the brake lathe surface. Lower the lathe cutting tools onto the disc surface with the lathe running then examine the mark; repeat the mounting if the mark does not cover two-thirds around the disc. Stick to disc refinishing steps provided by the lathe producer while checking thickness results and getting a fresh disc when minimum thickness limits reach. Set the machine to its suggested speed and use sandpaper at 120 grit aluminum oxide if you have a non-directional finishing tool or 150 grit paper if not. After cleaning friction surfaces with denatured alcohol or brake cleaner you must remove the disc from the lathe to measure assembled LRO. Readjust until it meets defined requirements.