OEM 2002 Chevrolet Trailblazer Brake Disc

2002 Chevrolet Trailblazer Parts Questions & Experts Answers

• Q: How to replace the rear brake disc on 2002 Chevrolet Trailblazer?

  A: Before changing the rear brake rotor you need to start by checking the brake fluid level in the master cylinder reservoir and drain extra liquid until the mark reaches the midpoint between full and low. Study the brake master cylinder reservoir fluid then lift the vehicle and remove the tire combined with the wheel assembly. A large c-clamp (J 21177-A) should be used to compress the front Brake Caliper Piston by putting it over the brake caliper housing and against the outboard Brake Pad. Tighten the clamp until the piston moves back far enough to remove the caliper. Finally remove the rear brake caliper mounting bracket along with any brake rotor retaining clips which might exist. After rust and foreign materials are removed from the axle flange and brake rotor mating area it will stop the lateral runout from increasing and brake pulsation from developing. The rotor requires marks for correlation when it needs reinstallation but should undergo refinishing instead of replacement. Provide the brake rotor area for cleaning by using the wheel hub resurfacing kit (J 42450-A). Apply necessary refinishing procedures when cleaning the rotor. The park brake shoes need cleaning with denatured alcohol while using non-lubricated filtered air to dry them before adding high-temperature silicone brake lubricant to the contact surface between the shoes and backing plate. Adjust the park brake shoes to the right specifications but keep the rotor to axle flange relationship marks in correct alignment when a new rotor finish is applied. To begin rotor installation workers must turn and push the rotor onto the axle flange which should then be followed by mounting the rear Brake Caliper Bracket before reinstalling the tire wheel unit. Complete the process by lowering the vehicle and perform master cylinder reservoir maintenance if fluid levels are low. The vehicle must stay parked until the Brake Pedal provides a firm resistance because moving it without precaution can lead to personal injury. Complete Brake Pad seating occurs after performing gradually firm Brake Pedal pumping which also serves to burnish the installed rotor.