Nissan Elgrand E50 Brake Pad Replacement Guide

The Nissan Elgrand E50, a popular people carrier, relies on a robust braking system to ensure the safety of its occupants. Over time, brake pads wear down, reducing their effectiveness and potentially leading to costly damage if left unchecked. Fortunately, replacing the brake pads on your Elgrand E50 is a manageable DIY task for those with basic mechanical knowledge and the right tools. This guide will walk you through the process, from preparation to the final checks, ensuring you can tackle this essential maintenance with confidence.

Why Replace Your Brake Pads?

Brake pads are a critical component of your vehicle's braking system. They work by pressing against the brake discs (rotors) when you apply the brake pedal, creating friction that slows and stops the vehicle. Over thousands of miles, this friction causes the pad material to wear away. Common signs that your brake pads need replacing include:

• Squealing or grinding noises: Many brake pads have a small metal indicator that scrapes against the rotor when the pad is thin, producing a high-pitched squeal. Grinding noises often indicate the pad material has completely worn away, exposing metal-on-metal contact, which can severely damage the brake rotor.
• Reduced braking performance: If you notice your vehicle taking longer to stop or requiring more pressure on the brake pedal, your pads may be worn.
• Vibration in the brake pedal or steering wheel: This can sometimes be a sign of unevenly worn pads or warped brake discs, which often accompany severely worn pads.
• Brake warning light illuminated: Some vehicles have sensors that can detect excessive pad wear and illuminate a dashboard warning light.

Ignoring these signs can lead to:

• Damage to the brake discs (rotors), which are more expensive to replace than pads.
• Compromised braking performance, putting yourself and others at risk.
• Potential failure of the braking system in extreme cases.

What You'll Need: Tools and Materials

Before you begin, ensure you have the necessary tools and parts. Using the correct equipment will make the job easier and safer.

Essential Tools:

• New brake pads: Ensure they are specifically designed for your Nissan Elgrand E50 (front or rear, depending on which you're replacing).
• Jack and jack stands: For safely lifting and supporting the vehicle. Never work under a vehicle supported only by a jack.
• Wheel chocks: To prevent the vehicle from rolling.
• Lug wrench or impact socket: Specifically a #21 socket for the Elgrand's wheel nuts.
• Torque wrench: To ensure lug nuts and caliper bolts are tightened to the correct specifications.
• C-clamp or piston compressor tool: To retract the brake caliper piston.
• Wire brush: For cleaning brake components.
• Brake cleaner: To clean dust and debris.
• Gloves and eye protection: For safety.
• Flathead screwdriver or pry bar: To help separate components if needed.
• Penetrating oil (e.g., WD-40): For stubborn bolts.

Optional but Recommended:

• Brake grease or anti-squeal compound: To lubricate contact points and prevent noise.
• New brake wear indicator clips (if applicable to your pads).

Step-by-Step Guide to Replacing Front Brake Pads

The process for replacing front and rear brake pads is similar, but there can be minor differences in caliper design. This guide will focus on the front brakes, which typically wear faster.

Step 1: Preparation and Safety

Safety is paramount. Ensure the vehicle is parked on a level surface with the engine switched off. Engage the parking brake firmly, although you'll be loosening the wheel nuts before jacking, so wheel chocks are essential. Open the bonnet and locate the brake fluid reservoir. Unscrew the cap to allow the fluid level to drop as you retract the caliper pistons later. Be careful not to overfill the reservoir when you're done; you might need to use a syringe to remove a small amount of fluid if it's too high.

Step 2: Loosen Wheel Nuts

Before lifting the vehicle, use your lug wrench or impact socket (#21) to loosen the wheel mounting bolts on the wheel you'll be working on. Turn them about half a turn to a full turn counter-clockwise. Do not remove them completely yet.

Step 3: Raise and Support the Vehicle

Using your jack, carefully raise the front of the Elgrand until the wheel you're working on is off the ground. Position a jack stand securely under a strong point of the chassis or suspension, and slowly lower the vehicle onto the jack stand. Ensure the vehicle is stable and secure before proceeding. Remove the wheel completely.

Step 4: Locate and Inspect the Brake Caliper

With the wheel removed, you'll see the brake caliper assembly mounted over the brake disc. The brake pads are housed within the caliper. Look for the caliper mounting bolts, which are typically on the back of the caliper. You may need to remove a dust cap to access them. The number and location of these bolts can vary, but most common designs require removing two bolts.

Step 5: Remove the Caliper Bolts

Identify the caliper slide pin bolts. These bolts often have rubber boots around them. You might need to hold the slide pin with a wrench while loosening the bolt to prevent it from spinning. Unscrew and remove the two caliper mounting bolts. Once the bolts are removed, the caliper should be able to be carefully pried or wiggled free from its bracket. If it's stuck, a gentle tap with a rubber mallet might help. Do not let the caliper hang by the brake hose; this can damage the hose. Support the caliper with a piece of wire or a small block of wood.

Step 6: Remove Old Brake Pads

The old brake pads are usually held in place by clips or simply slide out from the caliper bracket. Inspect the pads. You'll notice they have a metal backing plate and a friction material. If your new pads came with new wear indicator clips, remove the old ones. The old pads should now slide out of their slots in the caliper bracket. If they are stuck, a flathead screwdriver can be used to gently pry them out. Note the orientation of the pads and any shims or clips they have.

Step 7: Compress the Caliper Piston

Before installing the new, thicker pads, you need to push the caliper piston back into its bore. This will create enough space. Use a C-clamp or a dedicated piston compressor tool. Place the C-clamp so the screw end presses against the piston and the other end rests against the back of the caliper body. Slowly tighten the clamp. Watch the brake fluid reservoir to ensure it doesn't overflow. If it looks like it might, remove some fluid with a syringe. Continue compressing until the piston is fully retracted.

Step 8: Install New Brake Pads

Clean the caliper bracket where the brake pads sit using a wire brush. Remove any rust or debris. Apply a small amount of brake grease or anti-squeal compound to the back of the new brake pads (where they contact the caliper piston and bracket) and to the sliding surfaces of the caliper bracket. Avoid getting grease on the friction material itself. Slide the new brake pads into the caliper bracket, ensuring they are seated correctly and in the same orientation as the old ones. If you have new wear indicator clips, install them now.

Step 9: Reassemble the Caliper

Carefully place the caliper back over the new brake pads and disc. Ensure the brake hose is not twisted. Reinsert and tighten the caliper mounting bolts. It's crucial to torque these bolts to the manufacturer's specifications. Consult your Elgrand's service manual for the exact torque values. If you don't have a manual, a common torque range for caliper slide pin bolts is around 20-30 Nm, but always verify.

Step 10: Reinstall the Wheel and Lower the Vehicle

With the caliper securely reinstalled, place the wheel back onto the studs. Thread the lug nuts on by hand and tighten them as much as possible. Lower the vehicle carefully off the jack stand. Once the wheel is on the ground, use your torque wrench to tighten the lug nuts in a star pattern to the manufacturer's specified torque. This is typically around 100-120 Nm for a vehicle like the Elgrand, but again, check your manual.

Step 11: Repeat for Other Side and Wheels

Repeat the entire process for the other side of the same axle. It is generally recommended to replace brake pads in pairs (both front or both rear) to ensure even braking. If you are also replacing rear pads, follow a similar procedure, though rear calipers may have a slightly different mechanism, such as a screw-in piston for the parking brake.

Step 12: Final Checks and Bedding-In

Before driving, pump the brake pedal several times until it feels firm. This is crucial to push the caliper pistons back out and seat the new pads. Check the brake fluid level in the reservoir and top up if necessary, then replace the cap. Double-check that all bolts are tightened and the wheels are secure.

Bedding-in new brake pads is important for optimal performance and longevity. This process helps the pad material transfer evenly onto the disc surface. Follow the bedding-in procedure recommended by your brake pad manufacturer, but a common method involves:

• Perform 5-10 moderate stops from around 50-60 km/h down to 10-20 km/h without coming to a complete halt.
• Allow the brakes to cool down for a few minutes without driving.
• Perform another 3-5 harder stops from around 70-80 km/h down to 20-30 km/h, again without stopping completely.
• Drive for a few minutes without heavy braking to allow everything to cool.

Avoid sudden, hard braking during the first few hundred kilometres.

Common Pitfalls and How to Avoid Them

While this guide covers the essentials, here are some common mistakes to watch out for:

• Mixing up left and right pads: Some pads have specific wear indicators or shapes for left/right fitment.
• Forgetting to pump the brake pedal: This is a critical step for brake feel and function.
• Over-tightening or under-tightening bolts: Use a torque wrench.
• Getting grease on the friction surface: This will ruin the pads and reduce braking effectiveness.
• Letting the caliper hang by the brake hose: Always support it.
• Not checking brake fluid level: Ensure it's at the correct mark after the job.

Frequently Asked Questions

Q1: How often should I replace my brake pads?

A1: Brake pad life varies greatly depending on driving style, road conditions, and the type of pads used. A general guideline is every 20,000 to 50,000 miles, but it's essential to inspect them regularly (e.g., during oil changes) and replace them when they reach the minimum thickness specified by the manufacturer (usually around 2-3mm of friction material).

Q2: Can I replace just one brake pad?

A2: No, you should always replace brake pads in pairs for each axle (both front pads or both rear pads) to ensure even braking and prevent pulling to one side.

Q3: Do I need to replace the brake discs (rotors) at the same time?

A3: It's recommended to inspect your brake discs for wear, scoring, or warping. If they are below the minimum thickness, have deep grooves, or show signs of warping (like pedal pulsation), they should be replaced along with the pads. If they are in good condition, they can be kept.

Q4: What kind of brake pads should I buy for my Elgrand E50?

A4: For general use, standard OE (Original Equipment) or equivalent ceramic or semi-metallic pads are suitable. If you tow heavy loads or drive aggressively, consider performance-oriented pads, but be aware they may produce more dust or noise.

Q5: My brakes are making a new noise after replacement, what could it be?

A5: New pads often require a bedding-in period. Some light squealing or different brake feel is normal initially. However, if the noise is a loud grinding or persistent squeal, double-check that the pads are installed correctly, that no old hardware is interfering, and that the caliper is properly seated.

Conclusion

Replacing the brake pads on your Nissan Elgrand E50 is a rewarding DIY project that can save you money and ensure your vehicle's safety. By following these detailed steps, preparing thoroughly, and prioritising safety, you can successfully complete this vital maintenance task. Remember to always consult your vehicle's specific service manual for the most accurate torque specifications and procedures. Happy motoring!