Citroën Saxo Brake Pad Replacement Guide

The braking system is arguably the most critical safety feature on any vehicle, and ensuring your Citroën Saxo's brake pads are in good condition is paramount. Worn brake pads can significantly reduce your stopping power, increasing the risk of accidents. This guide will walk you through the process of replacing the brake pads on your Citroën Saxo (S0, S1), providing you with the knowledge to tackle this essential maintenance task with confidence. While it's a job many DIY enthusiasts can undertake, always prioritise safety and consult a professional if you're unsure about any step.

When to Replace Your Brake Pads

Several indicators suggest it's time to replace your brake pads. The most common sign is a squealing or grinding noise when you apply the brakes. This noise is often caused by the wear indicator – a small metal tab that contacts the brake disc when the pad material is low. Ignoring this warning can lead to damage to the brake discs, a more costly repair. Other signs include:

• A spongy or soft brake pedal.
• The brake warning light illuminating on your dashboard.
• A visible reduction in the thickness of the brake pad material. You can often see this by looking through the spokes of your wheels. The friction material should be at least 3-4mm thick.
• The car pulling to one side when braking.

Tools and Materials You'll Need

Before you begin, ensure you have all the necessary tools and materials to hand. This will make the process smoother and more efficient.

Essential Tools:

• New brake pads specifically for your Citroën Saxo model.
• Jack and jack stands.
• Wheel brace or torque wrench.
• Socket set and ratchet.
• C-clamp or brake caliper piston compressor tool.
• Wire brush.
• Brake cleaner.
• High-temperature brake lubricant (grease).
• Gloves and safety glasses.
• Rag or shop towels.
• Possibly a hammer for stubborn caliper pins.
• Flathead screwdriver or pry bar.

Step-by-Step Guide to Replacing Brake Pads

Here's a detailed breakdown of how to replace the brake pads on your Citroën Saxo. Remember to work on one wheel at a time to avoid confusion.

Step 1: Prepare the Vehicle

Park your Saxo on a flat, level surface. Engage the parking brake firmly. You may wish to place chocks behind the rear wheels for added security, even when working on the front brakes. As per the tip provided, press the brake pedal several times with the engine shut down until you feel resistance build up. This retracts the caliper pistons slightly and makes them easier to push back later. Remove any wheel chocks and jacks that might be hindering access, but ensure the car is securely supported.

Step 2: Loosen the Wheel Nuts

Before jacking up the car, use your wheel brace or torque wrench to slightly loosen the wheel nuts on the wheel you'll be working on. Just a quarter to half a turn is sufficient. This prevents the wheel from spinning freely when you try to loosen them once the car is in the air.

Step 3: Jack Up the Vehicle and Secure It

Locate the correct jacking point for your Saxo (refer to your owner's manual if unsure). Place the jack under the designated point and raise the vehicle until the wheel is completely off the ground. Once the car is raised, place a jack stand securely under the vehicle's chassis or a strong structural point near the wheel. Lower the car slowly onto the jack stand, ensuring it is stable. Never work under a vehicle supported only by a jack.

Step 4: Remove the Wheel

With the car securely supported, fully unscrew and remove the wheel nuts. Carefully pull the wheel off the hub and set it aside.

Step 5: Locate the Brake Caliper

You'll now see the brake disc and the brake caliper assembly. The brake pads are housed within the caliper.

Step 6: Remove the Caliper Bolts/Pins

Most brake calipers are held in place by two bolts, often referred to as caliper carrier bolts or slider pins. These are typically located on the back of the caliper. You may need to hold the slider pin with a wrench while undoing the bolt. In some cases, you might only need to remove the bottom bolt to allow the caliper to pivot upwards, or both bolts might need to be removed entirely. Consult your Saxo's specific design if you're unsure.

Step 7: Remove the Old Brake Pads

Once the caliper bolts are out or the caliper is pivoted up, you should be able to slide the caliper off the brake disc. If it's stuck, you might need to gently tap it with a rubber mallet or use a flathead screwdriver to pry it slightly. Hang the caliper from the suspension using a piece of wire or bungee cord to prevent straining the brake hose. The old brake pads should now be visible. They might be held in place by clips or simply sit in the caliper bracket. Carefully remove the old pads. Note their orientation, as the new ones will need to be installed in the same way.

Step 8: Compress the Caliper Pistons

This is a crucial step. The new brake pads are thicker than the old ones, so you'll need to push the caliper piston(s) back into the caliper body to make room. Use a C-clamp or a dedicated brake caliper piston compressor tool. Place the old brake pad against the piston and slowly tighten the clamp, pushing the piston back into the caliper. Ensure you do this gradually and watch the brake fluid reservoir under the bonnet – if it's full, you might need to remove a small amount of fluid to prevent overflow. Keep an eye on the fluid level throughout the process.

Step 9: Clean and Lubricate

Use a wire brush to clean any rust or debris from the caliper bracket and the areas where the brake pads sit. This ensures the new pads can move freely. Apply a thin layer of high-temperature brake lubricant to the back of the new brake pads (where they contact the caliper piston and bracket) and to the caliper slider pins. Avoid getting lubricant on the friction material of the brake pads or the brake disc itself, as this will severely compromise braking performance.

Step 10: Install the New Brake Pads

Insert the new brake pads into the caliper bracket, ensuring they are seated correctly and in the same orientation as the old ones. If your new pads came with new anti-squeal shims or clips, install these now.

Step 11: Reinstall the Caliper

Carefully slide the caliper back over the new brake pads and brake disc. Reinstall the caliper bolts or pins and tighten them to the manufacturer's specified torque. If you removed both bolts, ensure the caliper is properly seated before tightening.

Step 12: Reinstall the Wheel

Place the wheel back onto the hub and screw in the wheel nuts. Tighten them by hand as much as possible. Lower the vehicle safely off the jack stand.

Step 13: Final Tightening and Checks

With the car back on the ground, use your torque wrench to tighten the wheel nuts to the manufacturer's recommended torque setting. It's good practice to tighten them in a star pattern to ensure even pressure.

Step 14: Bedding In the New Brake Pads

This is a crucial step for optimal performance and longevity of your new brake pads. As the tip suggests, slow down smoothly for the first 150-200 km after replacement. This process, known as bedding in, allows the new pad material to mate properly with the brake disc surface. Perform several moderate stops from around 60-80 km/h down to 20-30 km/h, without coming to a complete halt. Avoid harsh braking during this period. This will help transfer a thin, even layer of pad material onto the disc, creating a more efficient braking surface.

Important Considerations and Safety Tips

• Always work on a level surface and ensure the vehicle is securely supported.
• Wear safety glasses to protect your eyes from dust and debris.
• Never reuse old brake pads or hardware.
• Check your brake fluid level and top up if necessary with the correct type of fluid specified for your Saxo.
• If you experience any issues or are unsure at any stage, consult a qualified mechanic.
• Brake dust can be harmful; avoid inhaling it.
• Consider replacing brake pads in pairs (both front or both rear) for balanced braking.

Common Problems and Solutions

Here are some common issues you might encounter and how to address them:

Frequently Asked Questions (FAQs)

Q1: How long does it take to replace brake pads on a Citroën Saxo?
On average, replacing brake pads on a single wheel can take between 30 minutes to an hour for a DIYer, depending on experience and any unforeseen issues. Doing both front wheels will likely take 1-2 hours.

Q2: Can I drive my Saxo with worn brake pads?
It is highly recommended not to drive your car with significantly worn brake pads. This compromises your safety and can lead to further damage to your braking system, including the discs, which will increase repair costs.

Q3: Do I need to replace the brake discs at the same time?
It's advisable to inspect your brake discs for wear, scoring, or warping when you replace the pads. If the discs are below the minimum thickness specified by the manufacturer, or if they show significant signs of damage, they should be replaced to ensure optimal braking performance and safety.

Q4: What is the correct brake fluid for a Citroën Saxo?
Most Citroën Saxos typically use DOT 4 brake fluid. Always confirm the correct type in your owner's manual to avoid compatibility issues.

Q5: Should I replace brake pads on both sides at once?
Yes, you should always replace brake pads in pairs on the same axle (e.g., both front pads or both rear pads). This ensures even braking performance and prevents uneven wear.

By following this comprehensive guide, you should be well-equipped to replace the brake pads on your Citroën Saxo. Remember to prioritise safety, use the correct parts and tools, and always bed in your new pads properly for the best results. Regular maintenance of your braking system is key to a safe driving experience.

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