OEM Chevrolet Express 1500 Brake Disc

Chevrolet Express 1500 Brake Disc Parts and Q&A

• Rotor, Front
  19210603
  Q: How to replace the front brake disc on Chevrolet Express 1500?

  A:

  Get the needed tools like disc resurfacing kit (J 41013) and wheel hub resurfacing kit (J 42450-A) if you want to replace the front Brake Disc. Clean all friction surfaces by applying denatured alcohol to the new disc then wiping it away to ready the surface for work. Lift the vehicle and set it on stands before taking out the wheel and tire assembly. Dual wheel vehicle owners should detach the front wheel hub extension during this step. Position a large screwdriver through the brake caliper into one disc vane to block turning while marking where the hub extension meets the hub. Afterwards remove the hub-side bolts from the extension. Gently hit the hub extension edges with a rubber mallet when it is tough to remove. Apply your c-clamp between the caliper bores to push the pistons forward and remove the brake caliper. Protect the brake hose from damage while installing mechanics wire beneath the brake caliper. If the disc sticks due to corrosion you should clean this area and put penetrating oil onto it before forcing it out of the hub with two bolts that measure m10 x 1.5. Before installing the hub and disc you must clean all rust and dirt particles from their mating surfaces with the wheel hub resurfacing kit (J 42450-A) and disc resurfacing kit (J 41013). Install the disc only after checking that the hub flange surface shows no damage. Check the lateral runout measurement of the disc assembly after installation and adjust it if needed to meet project standards. After cleaning the caliper bolt threads put threadlocker gm p/n 12345493 (Canada 10953488) on threads and install the caliper assembly with caliper bracket. Tighten caliper bracket bolts to the recommended torque values. Put the front wheel hub extension for dual-wheel vehicles back into its original position then tighten all nuts to the required torque. Put the wheel and tire back on and let the vehicle drop. Also position the brake caliper pistons properly by pressing and releasing the brake pedal until a strong pedal feel is achieved before adding new brake fluid to the reservoir.
• Brake Rotor
  25757802
  Q: What Tools Are Required to Service and Repair the Brake Disc, and What Are the Necessary Steps for Refinishing on Chevrolet Express 1500?

  A:

  The brake disc repair needs Disc Resurfacing Kit J 41013 plus Wheel Hub Resurfacing Kit J 42450-A. The routine brake system service does not include disc brake disc refinishing and technicians should refrain from refurbishing new discs to handle brake system noise issues or other brake-system-related problems. The discs need evaluation for thickness before any refinishing work to confirm they stay above the specified minimum. You need to refinish the brake discs when you detect gross variations in surface thickness plus severe rust spots, breakage, hot spots, blue-colored spots, and scoring beyond set specifications. Clean both surfaces of the disc and hub using Wheel Hub and Disc Resurfacing Kits to prepare the assembly for separation. Put the brake disc on the lathe correctly and check the mating surface for dirt particles before following the manufacturer's instructions for brake disc attachment. Check the mounting position by letting the lathe run against disc friction surfaces until the cutting tools touch. Then verify proper alignment from the witness mark. Before the disc refinishing process continue follow the manufacturer's lathe instructions and check discs thickness during all cuts. The brake disc must be replaced when refinishing does not lower its thickness below the defined limit. Follow directed speed settings as you sand with non-directional tool using 120 grit aluminum oxide or create a flat surface with 150 grit aluminum oxide sandpaper when the tool lacks non-directionality. After cleaning friction areas you need to measure the assembled LRO to check if it matches disc brake standards properly. Regular maintenance also includes minor adjustments without exceeding manufacturing specifications.