14 bolt drum brake rebuild

Rebuilding a 14% Bolt Drum Brake A Comprehensive Guide

Rebuilding a 14% bolt drum brake may seem like a daunting task, but with the right tools and knowledge, you can successfully complete the job and ensure safe and efficient braking performance. This article will guide you through the process step-by-step, outlining key considerations and tips to make your rebuild project easier and more effective.

Understanding Drum Brakes

Drum brakes are a common type of braking system found in vehicles, particularly older models and trucks. They consist of a drum, brake shoes, a wheel cylinder, and various springs and hardware. When the brake pedal is pressed, hydraulic pressure from the wheel cylinder pushes the brake shoes against the inner surface of the drum, creating friction and slowing down the vehicle.

Gathering Necessary Tools and Materials

Before starting your rebuild, gather all necessary tools and materials. You will need

- A lug wrench - A jack and jack stands - Brake cleaner - Replacement brake shoes - A wheel cylinder - New springs and hardware - A drum brake tool for adjustment - Basic hand tools (wrenches, sockets)

1. Preparation Begin by safely lifting the vehicle using a jack and securing it with jack stands. Remove the wheel where the drum brake is located.

2. Disassembly Remove the drum by unscrewing any retaining screws and sliding the drum off the hub. If the drum is stuck, a gentle tap with a rubber mallet may help loosen it.

3. Inspect Components Check the condition of the brake shoes, drum, and wheel cylinder. Look for signs of wear, such as scoring on the drum or excessive wear on the brake shoes. If any component appears damaged or worn beyond acceptable limits, replace it.

4. Remove Old Parts Detach the old brake shoes from the backing plate, taking note of how they are assembled and the positioning of the springs and hardware. This is crucial for proper reassembly.

5. Install New Parts Install the new brake shoes, making sure to follow the arrangement of the old ones closely. Attach the new springs and hardware, ensuring everything is secure and correctly positioned.

6. Replace the Wheel Cylinder If you’re replacing the wheel cylinder, disconnect it from the brake line. Install the new cylinder, ensuring all seals and connections are tight to avoid leaks.

7. Reassemble the Drum Once all components are in place, carefully slide the drum back onto the hub. Rotate the adjuster on the brake shoes to ensure that there is a slight drag when turning the drum, which indicates proper adjustment.

8. Final Checks Reattach the wheel and lower the vehicle. Before taking your vehicle on the road, pump the brake pedal a few times to seat the brake shoes properly against the drum.

Conclusion

Rebuilding a 14% bolt drum brake is an achievable task for those willing to learn and follow the correct procedures. By understanding the components and following each step meticulously, you can restore your vehicle’s braking system for optimal performance. Always remember to prioritize safety during the rebuild process, and consult a professional if you encounter any challenges beyond your expertise. Regular maintenance of your drum brakes is essential to ensure they function correctly and keep you safe on the road.