Steps for Replacing Trailer Drum Brakes Safely and Efficiently

How to Change Drum Brakes on a Trailer

Changing the drum brakes on a trailer is an important maintenance task that ensures safe and efficient stopping power. If you notice any signs of wear, such as squeaking or grinding noises, or if the trailer doesn’t stop as quickly as it should, it may be time to change the brakes. With the right tools and a bit of patience, you can perform this task yourself. Here’s a step-by-step guide on how to change drum brakes on a trailer.

Tools and Materials Needed

Before you start, make sure you have the following tools and materials

- Tools - Jack and jack stands - Lug wrench - Socket set - Screwdriver - Brake cleaning spray - Pliers - Torque wrench

- Materials - Replacement brake shoes - New brake drums (if needed) - Brake grease - Safety glasses - Work gloves

Step 1 Safety First

Before you get started, ensure that you take all necessary safety precautions. Put on safety glasses and work gloves. Make sure the trailer is parked on a flat surface and secured with wheel chocks. Disconnect the trailer from the towing vehicle and ensure it is stable.

Step 2 Remove the Wheel

Using the lug wrench, loosen the lug nuts on the trailer wheel. Once they are loose, use the jack to lift the trailer and place it securely on jack stands. Remove the lug nuts completely and take off the wheel to expose the drum.

Step 3 Inspect the Brake Drum

Next, take a close look at the brake drum. Check for any grooves, cracks, or signs of damage. If the drum is damaged beyond repair, it will need to be replaced before installing new brake shoes. Use the brake cleaning spray to clean the drum and remove any dust or debris.

Step 4 Remove the Brake Drum

If the brake drum is still in good condition, you can remove it. If it is stuck due to rust or debris, you might need to gently tap it with a hammer (be careful not to damage it) or use a puller to remove it. Once removed, set the drum aside.

Step 5 Remove Old Brake Shoes

With the drum removed, you’ll have access to the brake assembly. Take note of how the old brake shoes are installed; it may help to take a picture for reference. Start by disconnecting the springs and any clips holding the shoes in place using pliers. Carefully remove the old brake shoes from the backing plate.

Step 6 Install New Brake Shoes

Check the new brake shoes for any defects and apply a thin layer of brake grease to the contact points. Install the new shoes in the same position as the old ones, following the reference picture you took earlier. Secure them with the springs and clips, ensuring everything is tight and in place.

Step 7 Reinstall the Brake Drum

Once the new shoes are installed, it’s time to put the brake drum back. Carefully slide the drum over the brake shoes. If the drum doesn’t fit, you may need to adjust the brake shoes by turning the adjustment wheel.

Step 8 Replace the Wheel

After the drum is securely in place, it’s time to replace the wheel. Lift the wheel back onto the hub and hand-tighten the lug nuts. Lower the trailer back to the ground, then use the torque wrench to tighten the lug nuts to the manufacturer’s specifications.

Step 9 Repeat for Other Side

If your trailer has two axles or if you are replacing the brake shoes on both sides, repeat the same process for the other wheel. It’s always a good practice to replace brake components on both sides to ensure even braking.

Step 10 Test the Brakes

Finally, after completing the installation, perform a systematic check of the braking system. Reattach the trailer to the towing vehicle, and pump the brakes a few times to ensure proper adjustment. It’s also recommended to take the trailer for a short test drive in a safe area to ensure everything is working correctly.

Conclusion

Changing the drum brakes on a trailer is a manageable task if approached methodically. Maintaining your trailer’s braking system is crucial for safe towing and peace of mind on the road. If you ever feel uncertain about the process or encounter any complications, don’t hesitate to consult with a professional mechanic. Regular maintenance will prolong the life of your trailer’s braking system, ensuring safer journeys ahead.