how to change drum brakes on a trailer

How to Change Drum Brakes on a Trailer

Changing the drum brakes on a trailer is an essential maintenance task that ensures safe and efficient operation. Over time, the brake components can wear out due to constant friction and exposure to the elements. Here, we will guide you through the process of changing drum brakes on a trailer, highlighting key steps and safety precautions.

Tools and Materials Needed

Before you begin, gather the necessary tools and materials

1. Tools - Jack and jack stands - Wrench set - Screwdrivers (flat and Phillips) - Brake adjuster tool - Brake cleaner - Bailing wire or zip ties (for holding components) - Torque wrench (if needed for installation)

2. Materials - Replacement brake shoes - New drum (if necessary) - New wheel bearings (optional but recommended) - Grease (for the wheel bearings) - Brake grease or anti-squeal compound

Safety Precautions

1. Wear Safety Gear Always wear safety glasses and gloves to protect yourself from debris. 2. Stable Workspace Ensure you're working on a flat, stable surface to prevent the trailer from rolling. Use wheel chocks. 3. Proper Support Use jack stands to support the trailer after lifting, never rely solely on a jack.

1. Prepare the Trailer - Jack up the trailer and securely place it on jack stands. Remove the wheel using a wrench to take off the lug nuts.

2. Remove the Brake Drum - Inspect the drum for retaining screws or clips. Remove these if present. - Pull the brake drum off the hub. If it's stuck, gently tap it with a rubber mallet to free it.

3. Inspect Brake Components - Check for wear on the brake shoes, drum, and other components. If the brake shoes are less than 1/4 inch thick, or if the drum has grooves or cracks, replacement is necessary.

4. Remove Old Brake Shoes - Unhook the springs and clips holding the brake shoes in place. Be cautious as these springs are under tension. - Remove the old brake shoes. Take note of how they are arranged, as you will need to install the new ones in the same configuration.

5. Install New Brake Shoes - Begin by attaching the new brake shoes. Ensure that they are positioned correctly, and secure them using the necessary clips and springs. - Use a brake adjuster tool to adjust the shoes so that there is a slight gap between the shoes and the drum before you reinstall it.

6. Reinstall the Brake Drum - Clean the new drum with brake cleaner to remove any oils or debris, then slide it back onto the hub. - Ensure it spins freely but snugly against the shoes.

7. Reattach the Wheel - Place the wheel back on, hand-tighten the lug nuts, and then lower the trailer. - Once the trailer is on the ground, use a torque wrench to tighten the lug nuts to the manufacturer’s specifications.

8. Final Checks - Before taking the trailer on the road, press the brake pedal a few times to bed in the new shoes and to ensure that everything is functioning correctly. - Recheck the brake adjustment after a short test drive.

Conclusion

Changing the drum brakes on a trailer may seem daunting, but with the right tools and careful attention to detail, it is a manageable task. Regular maintenance of your trailer's braking system will enhance safety and performance. If you encounter any difficulties or feel unsure at any point, consulting a professional mechanic is advisable to ensure your safety on the road. Remember, properly functioning brakes are crucial for a safe towing experience. Happy towing!