Replacing the upper gearbox mount, also known as the coxim superior cambio in some regions, on a Peugeot 208 is a crucial maintenance task that ensures smooth gear changes and reduces vibrations. Guys, if you're experiencing excessive engine movement, difficulty shifting gears, or unusual noises while driving your Peugeot 208, it might be time to inspect and potentially replace this mount. This article will walk you through everything you need to know about this process, from identifying the symptoms to the actual replacement steps. Let's dive in!

Understanding the Upper Gearbox Mount

The upper gearbox mount is a vital component in your Peugeot 208's drivetrain system. Its primary function is to secure the gearbox to the vehicle's chassis, absorbing vibrations and minimizing movement during acceleration, deceleration, and gear changes. Over time, the rubber or polyurethane material that makes up the mount can degrade due to heat, age, and exposure to road contaminants. This degradation leads to a loss of its damping properties, causing increased vibrations and potential damage to other components. Think of it like the shock absorbers for your engine and transmission – when they wear out, you feel every bump and jolt! A worn gearbox mount can cause a number of problems, including:

• Excessive Engine Movement: You might notice the engine rocking back and forth more than usual, especially when starting or stopping the car.
• Vibrations: These can be felt through the steering wheel, seats, or floor of the vehicle.
• Difficulty Shifting Gears: Worn mounts can cause misalignment in the drivetrain, making it harder to engage gears smoothly.
• Noises: Clunking or banging sounds, particularly when shifting gears or going over bumps, are common indicators.
• Damage to Other Components: Ignoring a worn gearbox mount can lead to premature wear on other drivetrain parts, such as the CV joints and driveshaft.

Identifying the Need for Replacement

So, how do you know if your Peugeot 208's upper gearbox mount needs replacing? Here are some key symptoms to watch out for. Visual inspection is your first line of defense. Check the mount for cracks, tears, or excessive wear. If the rubber looks brittle or is completely separated, it's definitely time for a new mount. If you can't visually inspect the mount, enlist the help of a mechanic. They can use a pry bar to check for excessive play in the mount. Pay attention to vibrations, as unusual vibrations are another telltale sign. If you feel excessive shaking or vibrating, especially at idle or during acceleration, it could be due to a worn gearbox mount. The vibrations may be felt through the steering wheel, seats, or floor of the car. Also, listen for noises. Clunking or banging sounds when shifting gears or going over bumps are common indicators of a failing mount. These noises are caused by the gearbox moving excessively within the engine bay. And of course, poor shifting performance can be a symptom. If you're experiencing difficulty shifting gears smoothly, or if the gear lever feels loose or vague, a worn gearbox mount could be the culprit. A worn mount can cause misalignment in the drivetrain, making it harder to engage gears properly. Early detection and replacement of a worn upper gearbox mount can prevent more serious and costly damage to your Peugeot 208.

Tools and Materials Needed

Before you start the replacement process, make sure you have all the necessary tools and materials. Working with the right equipment will make the job easier, safer, and more efficient. Here’s a comprehensive list of what you’ll need. First off, you'll need the new upper gearbox mount specifically designed for your Peugeot 208 model. Ensure it's a high-quality replacement part from a reputable brand to guarantee proper fit and performance. Next, you'll need basic hand tools, including a socket set, wrenches (various sizes), and screwdrivers (Phillips and flathead). A torque wrench is also essential for tightening bolts to the manufacturer's specifications. Then, you'll need a jack and jack stands. These are critical for safely lifting and supporting your vehicle while you work underneath it. Never work under a vehicle supported only by a jack. Additionally, you'll need wheel chocks to prevent the car from rolling while it's lifted. Penetrating oil will help loosen any stubborn or rusted bolts, making removal easier. Spray the bolts well in advance of attempting to remove them. You'll also need a pry bar or long screwdriver to help maneuver the gearbox and align the new mount. A flashlight or work light will provide adequate illumination in the engine bay. A gloves and safety glasses are crucial for protecting your hands and eyes during the process. And lastly, a repair manual or online resource specific to your Peugeot 208 model will provide detailed instructions and torque specifications.

Step-by-Step Replacement Guide

Now, let's get down to the nitty-gritty: replacing the upper gearbox mount on your Peugeot 208. Follow these steps carefully to ensure a successful replacement.

1. Safety First: Before you begin, make sure the vehicle is parked on a level surface. Engage the parking brake and use wheel chocks to secure the rear wheels. Loosen the wheel nuts on the front wheels. Use a jack to lift the front of the vehicle and securely support it with jack stands. Never work under a vehicle supported only by a jack.
2. Locate the Upper Gearbox Mount: The upper gearbox mount is typically located on top of the gearbox, near the engine. Refer to your repair manual or online resource for the exact location on your specific Peugeot 208 model.
3. Disconnect Components (if necessary): Depending on the design of your vehicle, you may need to disconnect or move some components to access the mount. This could include air intake ducts, wiring harnesses, or other accessories. Be careful when disconnecting any electrical connectors and make sure to label them if needed.
4. Support the Gearbox: Use a jack to gently support the gearbox from underneath. This will prevent it from dropping when you remove the mount.
5. Remove the Old Mount: Using the appropriate sockets and wrenches, remove the bolts securing the upper gearbox mount to the gearbox and the vehicle's chassis. Once all the bolts are removed, carefully lift out the old mount. You may need to use a pry bar or long screwdriver to gently persuade it if it's stuck.
6. Inspect the Surrounding Area: Before installing the new mount, inspect the area where the old mount was located. Clean any dirt, debris, or corrosion. Check the condition of the surrounding components and replace them if necessary.
7. Install the New Mount: Position the new upper gearbox mount in place and align the bolt holes. Install the bolts and tighten them to the manufacturer's specified torque using a torque wrench. Make sure the mount is seated correctly and that all bolts are properly tightened. Important: Do not overtighten the bolts, as this can damage the mount or the surrounding components.
8. Reconnect Components: If you disconnected any components earlier, reconnect them now. Ensure all connectors are properly seated and that any wiring harnesses are securely fastened.
9. Lower the Vehicle: Slowly lower the vehicle to the ground and remove the jack stands. Tighten the wheel nuts to the manufacturer's specified torque.
10. Test Drive: Take the vehicle for a test drive and check for any unusual noises or vibrations. Pay attention to the gear shifting and make sure it's smooth and effortless. If you notice any problems, re-inspect the installation and make sure everything is properly aligned and tightened.

Tips and Tricks for a Smooth Replacement

Replacing the upper gearbox mount can be a straightforward process, but here are some tips and tricks to make it even smoother. First, soak the bolts with penetrating oil a few hours before starting. This will make them much easier to remove, especially if they're rusted or corroded. Apply the penetrating oil liberally and let it sit for at least a few hours, or even overnight. You can also use a wire brush to clean the threads of the bolts before applying the penetrating oil. Second, take photos as you disassemble things. This will serve as a visual reference when you're reassembling everything. Take photos of the location of each bolt, connector, and component. This will help you remember where everything goes and prevent mistakes. Third, use a jack to support the gearbox. This will prevent it from dropping when you remove the mount. Position the jack carefully under the gearbox and use a block of wood to protect the surface. Adjust the height of the jack so that it's just supporting the weight of the gearbox. Fourth, don't overtighten the bolts. Over-tightening can damage the mount or the surrounding components. Use a torque wrench to tighten the bolts to the manufacturer's specified torque. If you don't have a torque wrench, tighten the bolts snugly, but not excessively. Lastly, if you're not comfortable doing the job yourself, take it to a professional. Replacing a gearbox mount can be a complex and potentially dangerous job. If you're not comfortable working on your car, it's best to take it to a qualified mechanic. A professional will have the necessary tools, experience, and knowledge to do the job safely and correctly.

Choosing the Right Replacement Mount

Selecting the right replacement upper gearbox mount for your Peugeot 208 is crucial for ensuring optimal performance and longevity. Not all mounts are created equal, and choosing a high-quality part will make a significant difference in how your car drives and feels. OEM (Original Equipment Manufacturer) mounts are designed and manufactured by the same company that made the original mount for your vehicle. They are guaranteed to fit perfectly and provide the same level of performance as the original mount. However, OEM mounts can be more expensive than aftermarket options. Aftermarket mounts are manufactured by companies other than the original manufacturer. They can be a more affordable alternative to OEM mounts, but the quality can vary widely. When choosing an aftermarket mount, make sure to select a reputable brand that is known for producing high-quality parts. Performance mounts are designed to improve the performance of your vehicle. They are typically made from stiffer materials than OEM or aftermarket mounts, which can reduce engine movement and improve handling. However, performance mounts can also transmit more vibration to the cabin. When choosing a mount, consider the material. Rubber mounts are the most common type of mount. They are relatively inexpensive and provide good vibration damping. Polyurethane mounts are stiffer than rubber mounts and can provide better performance. However, they also transmit more vibration. Also, read reviews. Before purchasing a replacement mount, read reviews from other owners of Peugeot 208s. This can give you valuable insights into the quality and performance of different mounts. Ultimately, the best way to choose the right replacement mount is to consult with a qualified mechanic. They can assess your needs and recommend the best mount for your vehicle and driving style.

Conclusion

Replacing the upper gearbox mount on your Peugeot 208 is a manageable task with the right tools, knowledge, and a bit of patience. By following the steps outlined in this guide, you can restore your car's smooth shifting and reduce unwanted vibrations. Remember to prioritize safety, use quality replacement parts, and don't hesitate to seek professional help if needed. Taking care of your gearbox mount will contribute to a more enjoyable and reliable driving experience. Happy wrenching, guys!