Replacing brake calipers is a crucial task that ensures the safety and performance of your vehicle. These components play a vital role in the braking system, converting hydraulic pressure into mechanical force to slow down or stop the wheels. If you notice any signs of caliper failure, such as uneven brake pad wear, pulling to one side while braking, or a spongy brake pedal, it’s imperative to replace them promptly. While this task may seem daunting, it is feasible with the right tools, preparation, and a systematic approach. Follow these detailed instructions to guide you through the process, ensuring a successful and safe outcome.
Before embarking on this endeavor, gather the necessary tools and materials. You will require a set of wrenches, sockets, pliers, a brake fluid bleeder kit, and new brake calipers. Safety should be your utmost priority throughout the procedure. Wear protective gloves and safety glasses, and park your vehicle on a level surface. Engage the parking brake and chock the wheels to prevent any unexpected movement. Additionally, refer to your vehicle’s service manual for specific instructions and safety precautions.
Gathering Necessary Tools and Materials
Tools:
To replace brake calipers, you will need the following tools:
- Jack and jack stands
- Lug wrench
- Socket wrench set
- Allen wrench set
- Brake caliper spreader
- Bleeder wrench
- Flashlight
- Safety glasses
Materials:
In addition to the tools listed above, you will also need the following materials:
- New brake calipers
- New brake pads
- Brake fluid
- Anti-seize lubricant
It is important to gather all of the necessary tools and materials before starting the replacement process. This will help you avoid any delays or inconveniences while working.
Additional Notes:
| Tool | Purpose |
|---|---|
| Brake caliper spreader | Used to spread the brake caliper pistons back into their bores when installing new brake pads. |
| Bleeder wrench | Used to open the bleeder valves on the brake calipers to allow air to escape from the brake lines when bleeding the brakes. |
| Anti-seize lubricant | Applied to the threads of the brake caliper bolts and other components to prevent them from seizing up due to corrosion. |
Safety Precautions
Before beginning any brake work, it is important to take the following safety precautions to avoid injury or damage to your vehicle:
- Park your vehicle on a level surface and engage the parking brake.
- Allow the engine and brakes to cool completely before working on them.
- Wear safety glasses and gloves to protect yourself from brake dust and debris.
- Use a jack and jack stands to safely raise your vehicle and support it while you work.
- Never work under a vehicle that is supported only by a jack.
Vehicle Preparation
Once you have taken the necessary safety precautions, prepare your vehicle for the brake caliper replacement by following these steps:
1. Gather your tools and materials
You will need the following tools and materials to replace your brake calipers:
- New brake calipers
- Brake pads
- Brake fluid
- Wrench or socket set
- C-clamp
- Brake cleaner
- Rags
2. Locate the brake calipers
The brake calipers are located on the wheels of your vehicle. They are typically made of cast iron or aluminum and have two pistons that push the brake pads against the rotors to stop the vehicle.
3. Remove the brake caliper bolts
The brake caliper bolts are typically located on the back of the caliper. They are usually 17mm or 19mm bolts. Use a wrench or socket set to remove the bolts and carefully lift the caliper off the rotor. Be careful not to damage the brake hose when removing the caliper.
Removing the Old Brake Calipers
Step 1: Loosen the lug nuts but do not remove them entirely.
Step 2: Jack up the vehicle and secure it with jack stands.
Step 3: Remove the wheels.
Step 4: Disconnect the brake line from the caliper.
| Tools Required | Procedure |
|---|---|
| Flare nut wrench | – Use a flare nut wrench to loosen the brake line fitting at the caliper. – Be careful not to overtighten the fitting. – If the line is stubborn, apply a penetrating oil and allow it to sit for a few minutes before attempting to loosen it. |
Step 5: Remove the caliper mounting bolts.
Step 6: Remove the caliper from the rotor.
Installing the New Brake Calipers
Once you have removed the old brake calipers, it’s time to install the new ones. Here’s a step-by-step guide:
- Clean the mounting surfaces: Before installing the new calipers, it’s important to clean the mounting surfaces on the knuckle and caliper bracket. This will ensure a good seal and prevent any leaks. Use a wire brush or brake cleaner to remove any dirt or debris.
- Apply a thin layer of brake caliper grease: To prevent the calipers from seizing, apply a thin layer of brake caliper grease to the mounting surfaces. This will also help to prevent corrosion.
- Install the new calipers: Carefully lift the new calipers into place and align them with the mounting holes. Use the bolts that came with the new calipers to tighten them down.
- Install the brake pads: Insert the new brake pads into the caliper brackets. Make sure they are seated properly and fully engaged.
- Connect the brake hoses: Connect the brake hoses to the new calipers. Tighten the brake line fittings using a flare nut wrench or torque wrench.
- Bleed the brake system: To remove any air from the brake system, you will need to bleed the brakes. This is done by opening a bleeder valve on each caliper and allowing fluid to flow out until no more air bubbles are visible. Check the manufacturer’s instructions for specific bleeding procedures.
Bleeding the Brake System
Bleeding the brake system is the process of removing any air that may have entered the hydraulic lines during the caliper replacement. This air can cause a spongy pedal feel and reduced braking performance. To bleed the brakes, you will need a brake bleeder wrench, a length of clear tubing, and a clean rag or paper towels.
- Start by locating the bleeder screw on the caliper. It is usually a small, hex-shaped screw located on the top or side of the caliper.
- Place the brake bleeder wrench onto the bleeder screw and turn it counterclockwise until it is loose. Do not remove it completely.
- Attach one end of the clear tubing to the bleeder screw and the other end to a clean container.
- Have an assistant slowly depress the brake pedal while you open the bleeder screw. You should see brake fluid begin to flow out of the tubing.
- Continue bleeding the brakes until all of the air has been removed from the system. You will know this when the brake fluid flowing out of the tubing is bubble-free.
- Once the brakes are bled, tighten the bleeder screw and remove the tubing.
- Repeat this process for each of the other calipers.
- Check the brake fluid level in the master cylinder and add fluid if necessary. Be sure to use the correct type of brake fluid for your vehicle.
Additional Tips for Bleeding the Brake System
- If you are having trouble getting all of the air out of the brakes, you may need to use a vacuum bleeder.
- Be careful not to overtighten the bleeder screws. This can damage the caliper.
- If you are not comfortable bleeding the brakes yourself, you can take your vehicle to a mechanic to have it done.
How To Replace Brake Calipers
Replacing brake calipers is a relatively simple task that can be completed in a few hours. However, it is important to follow the instructions carefully to ensure that the job is done correctly.
To replace brake calipers, you will need the following tools:
- Socket wrench
- Ratchet
- Flathead screwdriver
- Large wrench
- C-clamp
- New brake calipers
- Brake fluid
Once you have all of the necessary tools, you can begin the replacement process.
- Park the vehicle on a level surface and engage the parking brake.
- Loosen the lug nuts on the wheel that you are working on, but do not remove them completely.
- Jack up the vehicle and secure it with jack stands.
- Remove the lug nuts and take off the wheel.
- Locate the brake caliper and remove the two bolts that hold it in place.
- Gently pull the brake caliper off of the rotor.
- Use the flathead screwdriver to pry the brake pads out of the caliper.
- Insert the new brake pads into the caliper.
- Place the brake caliper back over the rotor and secure it with the bolts.
- Tighten the lug nuts on the wheel.
- Lower the vehicle to the ground and remove the jack stands.
- Pump the brake pedal several times to engage the new brake pads.
Your brake calipers are now replaced. Be sure to test them out before driving the vehicle.
People Also Ask About How To Replace Brake Calipers
What is the cost of replacing brake calipers?
The cost of replacing brake calipers can vary depending on the make and model of your vehicle. However, you can expect to pay between $200 and $600 for the parts and labor.
How long does it take to replace brake calipers?
Replacing brake calipers typically takes between 1 and 2 hours per caliper.
Can I replace brake calipers myself?
Yes, it is possible to replace brake calipers yourself if you have the necessary tools and knowledge. However, it is important to note that this is a safety-critical repair, and it is recommended that you consult with a qualified mechanic if you are not confident in your ability to complete the job correctly.
