How to Determine if Drum Brakes Need Replacement?
2 Answers
Methods to determine if drum brakes need replacement are: 1. If brakes are used frequently, consider replacing drum brakes after the vehicle has traveled 80,000 kilometers; 2. If brakes are not used frequently, consider replacing drum brakes after the vehicle has traveled 100,000 kilometers; 3. If squeaking sounds are heard when using the brakes, immediately take the vehicle to a service center to inspect the braking system and replace the drum brakes. The working principle of drum brakes is: using the stationary brake shoes inside the brake drum to rub against the rotating brake drum that moves with the wheel, thereby generating friction to reduce the wheel's rotation speed. Its components include: brake backing plate, brake wheel cylinder, brake shoes, related linkages, springs, pins, and brake drum.
To determine whether drum brakes need replacement, I can share my personal experience. Frequent drivers know that when braking produces squeaking sounds or the car doesn't stop smoothly, it could be a warning sign. Especially on slippery roads, if the braking distance noticeably increases and the rear of the car wobbles a bit, the drum brake wear might be quite severe. Another simple method is to test the handbrake. If the handbrake feels loose or only works when pulled to a high position, there could be serious issues inside the drum brake. I recommend having the brake pad thickness checked during annual maintenance. Generally, if it's below 2mm, it's time for a replacement. Delaying it too long can cause the brake pads to wear through the drum shell, potentially leading to a breakdown or accident. Remember, safety comes first—don't cut corners and risk bigger problems.
