29/05/2025
The Peugeot 107, a popular choice for urban commuting across the UK, is renowned for its compact size, fuel efficiency, and ease of manoeuvrability. However, like any vehicle, its most crucial safety feature lies in its braking system. Understanding how your 107 stops and what components are involved is paramount for both safety and effective maintenance. While the 107 is a small car, it employs a sophisticated and reliable braking setup designed to provide consistent stopping power in various driving conditions.
At its core, the Peugeot 107 utilises a combination of disc brakes at the front and drum brakes at the rear. This configuration is a common and highly effective choice for smaller, lighter vehicles, balancing performance, cost-effectiveness, and longevity. This setup ensures that the primary braking force, which is predominantly handled by the front wheels due to weight transfer during braking, is managed by the more powerful disc brake system, while the rear wheels benefit from the robust and low-maintenance drum brake system.
- Understanding the Front Disc Brakes
- Exploring the Rear Drum Brakes
- The Hydraulic Braking System
- Advanced Braking Technologies: ABS and EBD
- Comparative Overview: Front Disc vs. Rear Drum Brakes
- Maintaining Your Peugeot 107's Braking System
- Why Knowing Your Peugeot 107's Version Matters
- Frequently Asked Questions About Peugeot 107 Brakes
Understanding the Front Disc Brakes
The front wheels of your Peugeot 107 are equipped with disc brakes, which are widely regarded for their superior stopping power and excellent heat dissipation capabilities. This is vital, as the front brakes typically handle around 70-80% of the braking effort during a typical stop.
Key Components of Front Disc Brakes:
- Brake Discs (Rotors): These are circular metal plates that rotate with the wheels. When the brakes are applied, the brake pads clamp down on these discs, creating friction that slows the vehicle. Peugeot 107s typically use solid discs, though some variations might feature vented discs for improved cooling, especially under heavy use.
- Brake Pads: These are friction materials mounted on a metal backing plate. They are designed to wear down over time and must be replaced periodically. The material composition of brake pads affects their performance, noise levels, and lifespan.
- Brake Calipers: The caliper houses the brake pads and contains a piston (or pistons). When hydraulic pressure is applied from the master cylinder, the piston pushes the pads against the brake disc, generating the necessary friction.
The efficiency of disc brakes comes from their open design, which allows heat generated during braking to dissipate quickly into the air, reducing the risk of brake fade – a reduction in braking power due to excessive heat.
Exploring the Rear Drum Brakes
For the rear wheels, the Peugeot 107 employs drum brakes. While often considered older technology compared to disc brakes, drum brakes are perfectly suited for the rear of a lightweight city car. They are simpler in design, more economical to manufacture, and typically require less frequent maintenance than disc brakes.
Key Components of Rear Drum Brakes:
- Brake Drums: These are hollow, cylindrical metal components that rotate with the wheels.
- Brake Shoes: These are curved friction materials, similar to brake pads, that are pressed outwards against the inner surface of the drum to create friction and slow the vehicle.
- Wheel Cylinders: Located within the drum assembly, the wheel cylinder receives hydraulic pressure from the master cylinder and pushes the brake shoes outwards against the drum.
- Return Springs: These springs pull the brake shoes back to their original position when the brake pedal is released.
- Handbrake Mechanism: The handbrake (or parking brake) typically operates on the rear drum brakes via a cable, mechanically engaging the shoes to hold the vehicle stationary.
Drum brakes are enclosed, which means they are less exposed to dirt and water, contributing to their durability and longevity. However, their enclosed nature means heat dissipation is less efficient than disc brakes, which is why they are primarily used where less intense braking is required.
The Hydraulic Braking System
Both the front disc brakes and rear drum brakes rely on a hydraulic system to transmit the force from your foot on the brake pedal to the brake components at each wheel. This system uses an incompressible fluid to transfer pressure efficiently.
Core Hydraulic Components:
- Brake Pedal: The point of interaction for the driver.
- Brake Booster (Servo): This vacuum-assisted unit multiplies the force applied by the driver to the brake pedal, making it easier to depress and providing more braking power with less effort.
- Master Cylinder: This is the heart of the hydraulic system. When the brake pedal is pressed, the master cylinder converts the mechanical force into hydraulic pressure, pushing brake fluid through the brake lines. It typically has two separate circuits for redundancy, ensuring that if one circuit fails, you still have some braking capability.
- Brake Lines and Hoses: These are robust pipes and flexible hoses that carry the hydraulic brake fluid from the master cylinder to each wheel cylinder (for drums) or caliper (for discs).
Advanced Braking Technologies: ABS and EBD
Modern vehicles, including the Peugeot 107, come equipped with advanced electronic braking systems that significantly enhance safety and control. These systems work in conjunction with the basic hydraulic setup.
- Anti-lock Braking System (ABS): This is a critical safety feature. Sensors at each wheel monitor their rotational speed. If a wheel begins to lock up during hard braking, the ABS control unit rapidly modulates the brake pressure to that specific wheel, preventing it from skidding. This allows the driver to maintain steering control, even under emergency braking conditions. The Peugeot 107, being a modern vehicle, will have ABS as standard.
- Electronic Brakeforce Distribution (EBD): Often integrated with ABS, EBD automatically varies the amount of braking force applied to each wheel based on road conditions, vehicle load, and speed. It optimises braking efficiency by ensuring that each wheel receives the maximum braking force without locking up, further improving stability and reducing stopping distances.
Comparative Overview: Front Disc vs. Rear Drum Brakes
To better illustrate the roles of each braking system type on your Peugeot 107, consider the following comparison:
| Feature | Front Disc Brakes | Rear Drum Brakes |
|---|---|---|
| Primary Function | Main stopping power, handles most braking force | Supplementary stopping power, parking brake integration |
| Components | Discs, pads, calipers | Drums, shoes, wheel cylinders |
| Heat Dissipation | Excellent (open design) | Moderate (enclosed design) |
| Maintenance Frequency | More frequent (pads wear faster) | Less frequent (shoes last longer) |
| Cost of Replacement Parts | Generally higher for pads/discs | Generally lower for shoes/drums |
| Handbrake Connection | No direct connection | Often integrates the handbrake mechanism |
| Performance in Wet | Generally better, sheds water quickly | Can be affected by water ingress, but less critical impact |
Maintaining Your Peugeot 107's Braking System
Regular maintenance is crucial for the optimal performance and longevity of your Peugeot 107's braking system. Ignoring warning signs can lead to reduced stopping power, increased stopping distances, and potentially dangerous situations.
Key Maintenance Points:
- Brake Pad and Shoe Inspection: Pads and shoes wear down over time. Listen for squealing or grinding noises, which often indicate worn pads/shoes. Many pads have wear indicators that produce a high-pitched squeal when they are low.
- Brake Disc and Drum Condition: Discs can become warped or develop grooves, while drums can become oval or worn beyond their service limit. These issues can cause vibrations or a pulsating brake pedal.
- Brake Fluid Level and Quality: Brake fluid is hygroscopic, meaning it absorbs moisture over time, which can reduce its boiling point and lead to a spongy pedal. It should be checked regularly and flushed/replaced according to Peugeot's recommended service intervals, typically every 2 years.
- Brake Line and Hose Inspection: Check for any signs of corrosion, leaks, or cracks in the brake lines and flexible hoses.
- ABS Warning Light: If the ABS warning light illuminates on your dashboard, it indicates a fault within the anti-lock braking system. While the regular braking system may still function, the ABS may not, compromising emergency stopping capability. This requires immediate professional inspection.
It is always recommended to have your brakes inspected by a qualified mechanic during routine servicing, or immediately if you notice any changes in braking performance or unusual noises.
Why Knowing Your Peugeot 107's Version Matters
While the fundamental braking system type (front disc, rear drum) is consistent across most Peugeot 107 models, specific component specifications can vary slightly depending on the exact year of manufacture, engine size, and trim level. For instance, different production years might use slightly different brake pad compounds, disc thicknesses, or drum sizes. When purchasing replacement parts, it is absolutely essential to provide your vehicle's full details – its registration number (which can be used to identify year, engine, and model), or failing that, the specific year of manufacture and engine size (e.g., 1.0L petrol). This ensures that you obtain parts that are a perfect fit for your specific vehicle, guaranteeing optimal performance and safety.
Frequently Asked Questions About Peugeot 107 Brakes
Q: How often should I have my Peugeot 107's brakes checked?
A: It's advisable to have your brakes inspected at least once a year or during every service. However, if you notice any unusual noises, changes in pedal feel, or a warning light illuminates, have them checked immediately.
Q: What does a grinding noise mean when I brake?
A: A grinding noise typically indicates that your brake pads are severely worn down and the metal backing plates are rubbing against the brake discs. This requires immediate attention, as it can damage the discs and significantly reduce braking effectiveness.
Q: My brake pedal feels spongy. What could be the cause?
A: A spongy brake pedal can be caused by air in the hydraulic system, low brake fluid levels, or old, contaminated brake fluid. It could also indicate a leak in the system. This issue needs prompt diagnosis by a mechanic.
Q: Can I replace my Peugeot 107's brake pads myself?
A: While it's possible for experienced DIY enthusiasts, brake system work is critical for safety. If you're not fully confident, it's always best to entrust brake replacements to a professional mechanic who has the right tools and expertise to ensure the job is done correctly and safely.
Q: What type of brake fluid does a Peugeot 107 use?
A: Most Peugeot 107 models typically use DOT4 brake fluid. Always check your vehicle's owner's manual or consult a professional to confirm the correct specification for your specific model year.
In conclusion, the Peugeot 107 is equipped with a robust and effective braking system featuring front disc brakes and rear drum brakes, supplemented by advanced safety features like ABS and EBD. Regular checks and timely maintenance are the keys to ensuring your little city car remains safe and reliable on every journey.
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