OEM 2004 Chevrolet Astro Brake Disc

2004 Chevrolet Astro Parts Questions & Experts Answers

• Q: How to replace the front brake disc on 2004 Chevrolet Astro?

  A: To change the front brake rotor, collect tools needed: rotor resurfacing kit (J 41013) and wheel hub resurfacing kit (J 42450-A). Start by lifting and holding the vehicle, then take off the tire and wheel assembly. Mark the position of the rotor in relation to the hub and then unbolt the two Brake Caliper Bracket mounting bolts. Support the brake caliper with heavy mechanic's wire so as not to damage the hydraulic flexible brake hose. Take the brake caliper and the mounting bracket into an assembly, allowing the hydraulic brake flexible hose to remain connected. Remove the rotor retaining push nuts from the wheel studs if required. In order to separate rotor from hub, where needed, use a deadblow hammer for; after that, remove the rotor. Remove rust or foreign matter from the mating surface of the rotor and flange using the wheel hub resurfacing kit j 42450-a, and rotor resurfacing kit (J 41013). Make sure the hub flange is free from nicks or marks by the time the rotor is mounted. Mount the rotor onto its original position on the hub and install followed by the caliper together with the caliper mounting bracket assembly. Prior to installing the caliper bracket mounting bolts, clean all the threads down with break parts cleaner, remove all traces of da of the original adhesive patch, and apply threadlocker (GM P/N 12345493). Mount the two caliper bracket mounting bolts and tighten it to 175 nm planning for 121 ft. Lbs. Reinstall the tire and wheel assembly, set the vehicle back down, and with the engine off, slowly press the brake pedal to about 2/3 of its stroke distance and then slightly release. Never release the pedal until a firm pedal is obtained which ensures appropriate seating of the brake caliper pistons and brake pads for15 seconds repeat this process. Finally, pour the brake fluid up to the proper elevation into the master cylinder reservoir for the following brake fluid.