BOSCH BC905 QuietCast Premium Ceramic Disc Brake Pad Set - Instruction Manual

1. Product Overview

The Bosch QuietCast BC905 Premium Ceramic Disc Brake Pad Set is engineered for superior braking performance, quiet operation, and extended durability. Designed for a wide range of Asian, Domestic, and European vehicles, these rear brake pads incorporate advanced technologies to ensure optimal safety and comfort.

Image 1: Bosch BC905 QuietCast Premium Ceramic Disc Brake Pad Set, including pads, hardware, and lubricant.

Key Features:

• OE Friction Type Matching: Ensures performance equivalent to original equipment.
• Molded Shim Technology (MST): Pre-attached multilayer rubber core shims are heat and pressure cured between steel layers for reduced noise, increased strength, and corrosion resistance.
• Ceramic Friction Material: Meticulously formulated for superior stopping power, quiet operation, and low dust.
• Powder-Coated Backing Plates: Prevents rust and corrosion, extending product life.
• Hardware Kit and Lubricant: Includes necessary hardware (where applicable) and synthetic lubricant for proper installation and reduced resistance on sliding contact points.
• Preinstalled Wear Indicator: One wear indicator is preinstalled per pad set.

2. Installation (Setup)

Proper installation of brake pads is crucial for vehicle safety and performance. It is highly recommended that brake pad replacement be performed by a qualified automotive technician. If you choose to perform the installation yourself, ensure you have the necessary tools, knowledge, and safety equipment.

General Installation Steps:

1. Safety First: Park the vehicle on a level surface, engage the parking brake, and use wheel chocks. Loosen lug nuts, then raise the vehicle with a jack and secure it with jack stands. Remove the wheel.
2. Remove Old Pads: Remove the caliper bolts and carefully slide the caliper off the rotor. Suspend the caliper with a wire or bungee cord to avoid stressing the brake hose. Remove the old brake pads and any old hardware.
3. Inspect Components: Inspect the brake rotor for wear, cracks, or warping. Replace the rotor if necessary (Bosch QuietCast rotors are recommended for optimal performance). Check the caliper for proper function and ensure the piston moves freely.
4. Clean and Lubricate: Clean the caliper bracket and all contact points where the new pads and hardware will sit. Apply the provided synthetic lubricant to the caliper pins and any metal-to-metal contact points, but avoid getting lubricant on the friction material of the pads or the rotor surface.
5. Install New Hardware: Install the new brake pad hardware (clips) onto the caliper bracket.
6. Install New Pads: Insert the new Bosch QuietCast brake pads into the caliper bracket. Ensure the wear indicator is correctly positioned.
7. Retract Caliper Piston: Use a caliper piston compression tool to retract the caliper piston(s) to accommodate the new, thicker brake pads.
8. Reassemble Caliper: Carefully slide the caliper back over the new pads and rotor. Reinstall and tighten the caliper bolts to the manufacturer's specifications.
9. Bleed Brakes (if necessary): If the brake system was opened or air entered the lines, bleed the brakes according to your vehicle's service manual.
10. Reinstall Wheel: Reinstall the wheel, hand-tighten lug nuts, lower the vehicle, and then fully tighten lug nuts to the manufacturer's torque specifications.
11. Repeat for Other Wheels: Repeat the process for all other wheels requiring brake pad replacement.

Image 2: Close-up of Bosch QuietCast brake pads and included hardware kit.

Brake-In Procedure:

After installation, a proper break-in procedure is essential to ensure optimal performance and longevity of your new brake pads and rotors. This process helps to transfer a thin layer of friction material from the pads to the rotor surface, ensuring even contact and preventing premature wear or noise.

• Perform 5-6 moderate stops from 30 mph (48 km/h) down to 5 mph (8 km/h).
• Allow approximately 30 seconds between stops for the brakes to cool slightly.
• Avoid hard braking or prolonged braking during the first 200 miles (320 km) after installation.

3. Operation

The Bosch QuietCast Premium Ceramic Disc Brake Pads are designed to provide consistent, reliable stopping power under various driving conditions. Their ceramic formulation ensures quiet operation and minimal dust accumulation, contributing to a cleaner wheel appearance and a more comfortable driving experience.

Expected Performance:

• Quiet Braking: The Molded Shim Technology significantly reduces noise and vibration.
• Low Dust: Ceramic friction material produces less dust compared to semi-metallic pads, keeping wheels cleaner.
• Consistent Stopping Power: Engineered to provide reliable and predictable braking performance throughout the pad's lifespan.
• Smooth Pedal Feel: Designed for a comfortable and responsive brake pedal feel.

4. Maintenance

Regular maintenance is essential to ensure the continued safety and performance of your vehicle's braking system. Adhere to your vehicle manufacturer's recommended service intervals for brake inspections.

Recommended Maintenance Practices:

• Regular Inspections: Have your brake pads, rotors, calipers, and brake fluid inspected by a qualified technician at least once a year or every 12,000 miles (19,000 km), or as recommended by your vehicle manufacturer.
• Listen for Wear Indicators: The preinstalled wear indicator will produce a high-pitched squealing sound when the brake pads are nearing the end of their service life. Address this sound promptly to prevent damage to the rotors.
• Check Brake Fluid: Ensure brake fluid levels are within the recommended range and that the fluid is clean. Brake fluid should be flushed and replaced periodically as per your vehicle's maintenance schedule.
• Monitor Braking Performance: Pay attention to any changes in braking feel, such as a spongy pedal, pulling to one side, or unusual noises.

5. Troubleshooting Common Issues

If you experience any issues with your braking system, consult a qualified technician immediately. Below are some common brake-related symptoms and potential causes:

Always consult a professional for brake system diagnosis and repair if you are unsure about the cause or solution to a braking issue.

6. Specifications

7. Warranty Information

Bosch automotive parts are manufactured to high-quality standards. For specific warranty details regarding your Bosch QuietCast Premium Ceramic Disc Brake Pad Set, please refer to the warranty documentation included with your product packaging or visit the official Bosch Automotive website. Warranty terms typically cover defects in materials and workmanship under normal use and service.

8. Customer Support

For technical assistance, product inquiries, or support, please contact Bosch Customer Service or visit their official website:

• Bosch Automotive Website: www.boschautoparts.com
• Refer to your product packaging for specific customer service contact numbers or email addresses.