Dorman HW5851 Rear Disc Brake Hardware Kit Instruction Manual

1. Product Overview

The Dorman HW5851 Rear Disc Brake Hardware Kit is engineered to provide a direct replacement for the original hardware components required to service the rear disc brake system on specified vehicles. This kit is manufactured from quality materials to ensure reliable performance and extended service life.

Key Features:

• Direct Replacement: Designed to match the fit and function of the original equipment hardware.
• Ideal Solution: Provides a reliable replacement for components that may have failed due to wear or fatigue.
• Durable Construction: Manufactured with quality materials for dependable performance and longevity.
• Trustworthy Quality: Backed by Dorman's extensive automotive experience.

2. Package Contents

The Dorman HW5851 Rear Disc Brake Hardware Kit includes all necessary components for a complete hardware replacement on one axle. Please verify all parts are present before beginning installation.

• Dorman HW5851: Disc Brake Hardware Kit (specific components may vary but typically include caliper guide pin boots, anti-rattle clips, and other necessary hardware).

3. Vehicle Compatibility

This hardware kit is compatible with the following vehicle models and years. Always confirm fitment using your vehicle's make, model, and trim level before purchase and installation.

• Chevrolet Express 2500: 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013
• Chevrolet Express 3500: 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013
• Chevrolet Express 4500: 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017
• GMC Savana 2500: 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013
• GMC Savana 3500: 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013
• GMC Savana 4500: 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016

4. Installation Guidance

Installation of brake components requires mechanical knowledge and specialized tools. It is highly recommended that installation be performed by a qualified automotive technician. Always refer to your vehicle's specific service manual for detailed, step-by-step instructions and torque specifications.

General Steps (Consult Service Manual for Details):

1. Safety First: Ensure the vehicle is securely lifted and supported on jack stands. Disconnect the battery if necessary.
2. Remove Wheel: Loosen lug nuts, raise vehicle, remove wheel.
3. Remove Caliper: Carefully remove the brake caliper from its mounting bracket. Do not let it hang by the brake hose.
4. Remove Old Hardware: Remove and discard all old brake hardware components, including clips, shims, and rubber boots.
5. Clean Components: Thoroughly clean the caliper mounting bracket and caliper guide pins. Remove any rust or debris.
6. Install New Hardware: Install the new Dorman HW5851 hardware components onto the caliper and mounting bracket as per your vehicle's service manual. Ensure all parts are correctly seated.
7. Reassemble: Reinstall the brake caliper, ensuring all bolts are torqued to manufacturer specifications.
8. Bleed Brakes (if necessary): If the hydraulic system was opened, bleed the brake system according to manufacturer procedures.
9. Test Brakes: Before driving, pump the brake pedal several times to ensure proper pressure. Test brakes at low speed in a safe area.

Warning: Improper installation of brake components can lead to brake failure, resulting in serious injury or death. If you are unsure about any step, seek professional assistance.

5. Maintenance

Regular inspection and maintenance of your vehicle's brake system are crucial for safety and performance. The Dorman HW5851 hardware kit is designed for durability, but components can wear over time.

• Routine Inspection: During routine brake service or tire rotations, inspect the brake hardware for signs of wear, corrosion, or damage.
• Cleaning: Keep caliper slide pins and their boots clean and properly lubricated to ensure smooth caliper movement.
• Replacement: Replace brake hardware whenever new brake pads are installed, or if any components show signs of degradation.

6. Troubleshooting

If you experience issues with your brake system after installing new hardware, consider the following general troubleshooting points. Always consult a qualified technician for diagnosis and repair.

• Brake Noise (Squealing/Grinding): Ensure all anti-rattle clips are correctly installed. Check for proper lubrication on contact points. Verify brake pads are seated correctly.
• Uneven Pad Wear: May indicate seized caliper guide pins or improper caliper movement. Ensure guide pins are clean, lubricated, and boots are intact.
• Soft Brake Pedal: Could indicate air in the brake lines (if lines were opened) or other hydraulic issues. Bleed the brake system thoroughly.
• Vibration During Braking: Often related to warped rotors, but can also be exacerbated by improperly installed or worn hardware.

7. Product Specifications

8. Warranty and Support

Dorman Products are manufactured to high-quality standards. For specific warranty information or technical support, please refer to the official Dorman website or contact Dorman customer service directly. Keep your purchase receipt for warranty claims.

For additional information or to explore other Dorman products, visit the Dorman Store on Amazon.