When it comes to setting up your Shimano SM-RT800 [paid link] disc brakes, one of the most common questions cyclists face is whether to take on the task themselves or leave it to a professional mechanic. While installing your own disc brakes can be rewarding and cost-effective, the complexity of the task often makes it a daunting job for those without experience. This guide will help you assess whether DIY installation is the right choice for you or if it’s better to let a professional handle the job.
Tools Required for SM-RT800 Disc Brake Installation
Before diving into the installation process, it’s important to gather the necessary tools. Here’s what you’ll need if you decide to go the DIY route:
- Torque wrench [paid link] (preferably with a 3-6 Nm range for small bolts)
- 5mm hex wrench
- 8mm hex wrench (for rotor bolts)
- Brake caliper mounting tool (for proper caliper alignment)
- Shimano disc brake grease or mineral oil [paid link]
- Isopropyl alcohol (for cleaning)
- Rotor bolt washers
- Optional: Shimano brake bleeder kit (for hydraulic setups)
DIY Installation of Shimano SM-RT800 Disc Brakes
Installing the Shimano SM-RT800 [paid link] disc brakes yourself can be a rewarding experience, especially for those who enjoy working on their bikes and want to gain a deeper understanding of their braking system. However, it’s important to follow a structured process to avoid issues and ensure optimal braking performance.
Step 1: Remove the Old Rotor (if applicable)
Before you install the new SM-RT800 [paid link] rotor, you’ll need to remove the old one. Using your 8mm hex wrench, carefully loosen and remove the rotor bolts. Keep the bolts aside in case you plan to reuse them. Clean the hub surface with isopropyl alcohol to remove any dirt, grease, or debris.
Step 2: Install the SM-RT800 Rotor
Place the SM-RT800 rotor onto the hub, ensuring it aligns with the bolt holes. If your rotor came with new bolts, use them to secure the rotor. Make sure to follow the manufacturer’s torque specifications (usually around 6Nm for rotor bolts). Apply a small amount of Shimano brake grease to the rotor bolt threads to prevent them from seizing.
Step 3: Mount the Brake Caliper
Next, you’ll need to mount the brake caliper onto the frame or fork. First, check that your mounting brackets are compatible with the SM-RT800 rotor (either 6-bolt or CenterLock). Secure the caliper with the provided mounting bolts, making sure they are tightened to the proper torque specification.
Step 4: Align the Caliper
It’s crucial to align the brake caliper properly to ensure even braking. Loosen the caliper mounting bolts slightly and check the rotor’s clearance from the caliper. Use a 5mm hex wrench to adjust the caliper’s position until the rotor moves freely without rubbing the pads. Once aligned, tighten the caliper bolts securely.
Step 5: Connect the Brake Levers and Check Hydraulic Lines
If your SM-RT800 disc brakes are hydraulic, make sure the brake lines are properly connected to the caliper and lever. Check the hydraulic fluid levels and ensure there are no air bubbles in the system. If necessary, bleed the brakes using a Shimano brake bleeder kit to ensure smooth and responsive braking.
Step 6: Test the Setup
Once everything is installed and aligned, test the brake lever by pulling it to make sure it feels firm and responsive. Spin the wheel to check for any rubbing noises or resistance. If you encounter any issues with brake performance or rotor alignment, you may need to fine-tune the installation.
Professional Installation of Shimano SM-RT800 Disc Brakes
If you prefer to leave the installation to a professional, there are several advantages to this option. While the cost of professional installation can vary depending on the shop, opting for expert assistance ensures that your SM-RT800 disc brakes are installed with precision and care.
Expertise and Experience
Professional bike mechanics have extensive experience working with a wide range of components, including Shimano’s SM-RT800 disc brakes. They understand the intricacies of proper rotor alignment, hydraulic brake bleeding, and caliper installation, ensuring optimal performance and safety. Their expertise can significantly reduce the likelihood of errors that could lead to improper braking or even damage to your bike.
Proper Tools and Equipment
Many cyclists lack access to specialized tools such as hydraulic brake bleed kits, torque wrenches, and caliper alignment tools. Professional bike shops have the necessary tools on hand to install your SM-RT800 brakes to the manufacturer’s exact specifications, which is especially crucial for hydraulic setups.
Time-Saving and Convenience
Installing disc brakes can take time, especially if you’re unfamiliar with the process. A professional mechanic can complete the installation quickly and efficiently, allowing you to get back on the road sooner. Additionally, they will test the setup thoroughly to ensure everything is working as expected.
DIY vs. Professional Installation: Which Is Right for You?
Whether you should install your Shimano SM-RT800 disc brakes yourself or hire a professional depends on a few key factors:
- Skill Level [paid link]: If you have experience working on your bike and feel confident with tools, DIY installation may be a great choice. However, if you’re a beginner or uncomfortable with hydraulic brake systems, professional installation may be safer.
- Tools and Equipment: If you don’t have the required tools, a bike shop can save you time and effort. While some tools can be purchased, the cost of purchasing them may not be worth it for a one-time job.
- Time and Convenience: Professional installation is a quick and hassle-free option, whereas DIY installation can take several hours, especially if you need to troubleshoot issues along the way.
- Cost: While professional installation typically costs more, it’s worth considering the value of your time and the peace of mind that comes with expert installation. DIY installation is more cost-effective but may lead to additional costs if issues arise.
Conclusion
Ultimately, the decision between DIY or professional installation of the Shimano SM-RT800 disc brakes boils down to your skill level [paid link], the tools available to you, and how much time and effort you’re willing to invest. For riders comfortable with bike maintenance, DIY installation is a great way to save money and gain hands-on experience. However, if you’re uncertain or want to ensure that your brakes are installed perfectly, trusting a professional mechanic with the job is always a good option.
Whichever route you choose, proper installation and maintenance of your SM-RT800 disc brakes will ensure that you enjoy maximum stopping power and optimal braking performance for many miles to come.