brake drum wont go back on

Dec . 02, 2024 05:58 Back to list

brake drum wont go back on

Troubleshooting Your Brake Drum When It Won’t Go Back On

Brake drums are a crucial component of the drum brake system, which is commonly used in older cars and some trucks. Despite their endurance, there are instances when you may find that the brake drum will not go back on after servicing. This can be frustrating, especially when you're eager to complete your brake job. In this article, we’ll explore the common reasons why a brake drum may not fit back onto the assembly and how you can troubleshoot the issue effectively.

1. Understand the Components

Before diving into troubleshooting, it's essential to have a clear understanding of the brake drum assembly. The main components include the brake drum itself, brake shoes, a wheel cylinder, and various springs and hardware. The drum should slide back into place over the shoes when they are retracted properly. With that in mind, let’s look at the potential problems that could prevent this.

2. Adjusting the Brake Shoes

One of the most common reasons why a brake drum won’t go back on is that the brake shoes are not properly adjusted. When you replace your brake components, the shoes may expand or remain in a slightly extended position. This expansion can be caused by worn-out springs or a malfunctioning adjuster.

To remedy this, check your adjuster mechanism. Typically, this involves turning a star wheel adjusted through a slot in the backing plate, which will retract the brake shoes. Ensure both shoes are evenly adjusted and that there’s adequate clearance for the drum to fit over them.

3. Inspecting the Brake Hardware

If adjusting the shoes doesn’t resolve the issue, the next step is to check the brake hardware. Worn or misplaced springs can prevent the shoes from retracting fully. Inspect all the springs and other hardware to ensure they are in good condition. If you find any rusted, broken, or deformed parts, replace them.

brake drum wont go back on

Additionally, make sure that all the components are assembled correctly according to your vehicle’s manual. Misalignment can lead to complications during reassembly.

4. Checking for Warped Drums

Another possible issue could be the brake drum itself. If the drum is warped or worn down, it may not fit back over the brake shoes. Use a drum micrometer to check the drum’s diameter. If it exceeds factory specifications, it may need to be resurfaced or replaced entirely. Warping can occur due to excessive heat or prolonged use, so regular inspections are crucial.

5. Inspecting the Wheel Cylinder

The wheel cylinder is responsible for pushing the brake shoes outward when the brakes are applied. If it is leaking or failing, it could result in improper shoe retraction. Make sure that the wheel cylinder is functioning correctly and hasn’t extended beyond its limits.

6. Lay Down the Floor

Finally, ensure that there are no foreign objects or debris inside the drum or on the backing plate that might obstruct the reassembly. Sometimes, dirt and grime can accumulate, causing unexpected interference.

Conclusion

Getting your brake drum back on can be challenging, but with a systematic approach, you can troubleshoot and resolve the issue. Always remember to prioritize safety by ensuring you’re working in a well-lit area and wearing protective gear. If after troubleshooting you still cannot fit the drum back on, consulting a professional mechanic may be the best course of action. Regular maintenance and inspections will keep your braking system in optimal condition, ensuring you stay safe on the road. Remember, proper knowledge and care for your automotive needs are pivotal for a long-lasting vehicle experience.