Bosch BP149
Manual d'instruccions del joc de pastilles de fre de disc semimetàl·liques BOSCH BP149 QuietCast Premium
This manual provides essential information for the installation, operation, and maintenance of your Bosch QuietCast Premium Semi-Metallic Disc Brake Pad Set.
Producte acabatview
The Bosch QuietCast Premium Semi-Metallic Disc Brake Pad Set (Model BP149) is engineered for optimal braking performance across a wide range of vehicles. These brake pads are designed to deliver OE quality performance, durability, and quiet operation with low dust. They feature advanced friction materials and innovative technologies to ensure reliable stopping power.
Característiques principals:
- OE Braking Excellence: Draws on over 77 years of Bosch's original equipment braking expertise.
- Quieter Stops: Equipped with pre-attached OE style multilayer rubber core shims for reduced noise, increased strength, and corrosion resistance.
- Exceptional Friction Material: Rigorously formulated Semi-Metallic friction material for robust performance, stopping power, and low dust.
- Bosch Durability: Powder-coated backing plate prevents rust and corrosion, extending product life. Features OE style slots and chamfers for premium quality, fit, and function.
- Llest per instal·lar: Each set includes pads for one axle (two wheels), a hardware kit (where applicable), and synthetic lubricant for reduced resistance on sliding contact points.

Image: Components of the Bosch QuietCast Premium Semi-Metallic Disc Brake Pad Set, showing four brake pads, two metal clips, and a packet of synthetic lubricant.

Image: Cross-section diagram of a Bosch QuietCast brake pad, detailing its layered construction with coating, steel, rubber, steel, and adhesive, which contributes to its quiet operation and durability through Molded Shim Technology.
Informació de seguretat
Always prioritize safety when working on vehicle braking systems. Improper installation or maintenance can lead to serious injury or vehicle damage. If you are not confident in your ability to perform this installation, seek assistance from a qualified automotive technician.
- Utilitzeu l'equip de protecció individual (EPI) adequat, incloent-hi ulleres i guants de seguretat.
- Assegureu-vos que el vehicle estigui ben recolzat sobre els suports hidràulics abans de començar qualsevol treball.
- Consulteu el manual de servei del vostre vehicle per conèixer les especificacions i els procediments de parell d'apriete específics.
- Mantingueu el líquid de frens allunyat de les superfícies pintades, ja que pot danyar la pintura.
- Dispose of old brake components and fluids responsibly according to local regulations.
Guia d'instal·lació
This section provides a general guide for installing the Bosch QuietCast Premium Semi-Metallic Disc Brake Pad Set. Specific steps may vary depending on your vehicle make and model. Always consult your vehicle's service manual for detailed instructions.
Eines i materials necessaris:
- Jack i Jack es paran
- Lug wrench
- Joc de preses i carraca
- C-clamp or brake caliper piston compression tool
- Raspall de filferro
- Netejador de frens
- Clau dinamométrica
- New Bosch QuietCast Brake Pads (BP149)
- Synthetic lubricant (included with pads)
- Hardware kit (where applicable, included with pads)
Instal·lació pas a pas:
- Preparar el vehicle: Park the vehicle on a level surface, engage the parking brake, and loosen the lug nuts on the wheels where brake pads will be replaced. Jack up the vehicle and secure it with jack stands. Remove the wheels.
- Treure les pastilles de fre velles: Locate the brake caliper. Depending on your vehicle, you may need to remove caliper guide pins or bolts to swing the caliper open or remove it entirely. Carefully remove the old brake pads. Note their orientation.
- Inspeccionar components: Inspect the brake rotors for excessive wear, scoring, or warping. If necessary, replace the rotors with new Bosch QuietCast Premium Disc Brake Rotors for optimal performance. Check caliper slides and boots for damage.
- Netejar i lubricar: Clean the caliper bracket and hardware mounting points with a wire brush and brake cleaner. Apply the provided synthetic lubricant to the caliper slide pins and any metal-to-metal contact points on the new hardware (if included).
- Pistó de la pinça de compressió: Utilitzeu un C-clamp or a brake caliper piston compression tool to slowly push the caliper piston(s) back into the caliper bore. This creates space for the thicker new brake pads.
- Instal·leu pastilles de fre noves: Install the new Bosch QuietCast brake pads into the caliper bracket, ensuring they are correctly seated. If a new hardware kit is included, install the new clips and shims.
- Torneu a muntar el calibre: Reinstall the brake caliper over the new pads and rotor. Secure the caliper guide pins or bolts and tighten them to the manufacturer's specified torque.
- Passos finals: Reinstall the wheels and tighten the lug nuts hand-tight. Lower the vehicle and torque the lug nuts to the manufacturer's specifications. Repeat the process for the other wheels.
Vídeo: Un overview of Bosch QuietCast Premium Disc Brake Pads and Rotors, highlighting key features and benefits. This video provides general product information and does not replace specific vehicle installation instructions.
Instruccions de funcionament
Brake Pad Break-In Procedure (Bedding-In):
After installing new brake pads, it is crucial to follow a proper break-in procedure to ensure optimal performance and longevity. This process, known as "bedding-in," transfers a thin layer of friction material from the pads to the rotor surface, creating a more consistent braking surface.
- Find a safe, open area with minimal traffic.
- Accelerate to approximately 35 mph (56 km/h) and apply moderate braking pressure to slow down to about 5 mph (8 km/h). Do not come to a complete stop.
- Repeat this moderate braking procedure 4-5 times, allowing a short period between each stop for the brakes to cool slightly.
- Next, accelerate to approximately 50 mph (80 km/h) and apply firm braking pressure (but not hard enough to activate ABS) to slow down to about 5 mph (8 km/h). Do not come to a complete stop.
- Repeat this firm braking procedure 2-3 times, allowing a short period between each stop for the brakes to cool slightly.
- After the bedding-in process, drive normally for at least 200 miles (320 km), avoiding sudden or aggressive braking.
During the break-in period, you may notice a slight burning smell or reduced braking effectiveness. This is normal. Avoid heavy braking or prolonged stops immediately after installation.
Manteniment
Regular inspection and maintenance of your braking system are essential for safety and performance.
- Inspecció de rutina: Inspect brake pads, rotors, and calipers at least once a year or every 12,000 miles (20,000 km), whichever comes first. Look for signs of wear, cracks, or damage.
- Brake Pad Wear: Replace brake pads when the friction material wears down to the minimum thickness specified by your vehicle manufacturer, typically around 2-3mm. Bosch QuietCast pads are designed for long life, but wear rates can vary based on driving conditions.
- Líquid de frens: Check brake fluid level and condition regularly. Consult your vehicle manual for recommended brake fluid replacement intervals.
- Condició del rotor: Ensure rotors are free from deep grooves, excessive rust, or warping. Replace rotors if they are below minimum thickness or show significant damage.
Resolució de problemes
| Símptoma | Causa possible | Solució |
|---|---|---|
| Soroll de xiscle/grinxament | New pads not properly bedded-in, worn pads (wear indicator), foreign object, caliper issues. | Perform break-in procedure. Inspect pads for wear and replace if necessary. Check for debris. Inspect calipers for proper function. |
| Vibration/Pulsation during Braking | Warped rotors, uneven pad wear, loose wheel bearings. | Inspect and replace rotors if warped. Check for proper pad installation. Inspect wheel bearings. |
| Pedal de fre suau | Air in the brake lines, low brake fluid, faulty master cylinder. | Bleed the brake system. Check and top up brake fluid. Inspect master cylinder. |
| Vehicle Pulls to One Side | Uneven brake pad wear, seized caliper, contaminated brake fluid. | Inspect pads and calipers. Flush and replace brake fluid. |
If you experience any persistent braking issues, it is recommended to have your vehicle inspected by a professional mechanic immediately.
Especificacions
| Atribut | Detall |
|---|---|
| Marca | Bosch |
| Número de model | BP149 |
| Material | Semimetàl·lic |
| Posició de peces d'automòbil | Front, Rear (Note: Verify specific fitment for your vehicle) |
| Tipus de servei del vehicle | Automoció |
| Especificació Met | OEM |
| Pes de l'article | 3.9 lliures |
| Dimensions del producte | 8.25 x 5.25 x 3.25 polzades |
| UPC | 031808169217, 077212101467 |
Garantia i Suport
Bosch products are manufactured to high-quality standards. For specific warranty information regarding your Bosch QuietCast Premium Semi-Metallic Disc Brake Pad Set, please refer to the documentation included with your product or visit the official Bosch Automotive website. For technical support or inquiries, please contact Bosch customer service.
Bosch Automotive Weblloc: www.boschautoparts.com
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