
Signs that drum brakes need replacement include: 1. The vehicle has traveled 80,000 kilometers; 2. Hearing a sharp screeching noise when braking; 3. Excessive wear on the vehicle's braking system; 4. Brakes are not responsive. The method for replacing drum brakes is as follows: 1. Remove the tire, tap the surface of the brake drum with a hammer to loosen it, then remove it; 2. Insert a flat-head screwdriver into the spring gap and pry out the return spring; 3. Remove the bolts fixing the brake shoes and take off the brake shoes; 4. Remove the positioning pins of the brake shoes, install them on the new brake shoes, and assemble them onto the brake assembly; 5. Adjust the handbrake height after installation; 6. Install the new brake drum and tire.

After driving an old car for years, I judge when drum brakes need replacement by braking performance – if you have to stomp hard to stop with noticeably longer pedal travel, it's a red flag. Last week on the highway I noticed a spongy feel, and post-inspection found the brake pads worn dangerously thin – the mechanic said anything under 1.5mm thickness means replacement. Noise warnings like 'grinding' sounds or squealing are also wear limit signals. Don't forget rainy season water buildup accelerates drum brake rust failure – early checks bring peace of mind. I personally check every 5,000km as routine to avoid mishaps. Safe driving is king – don't wait until total brake failure to regret it.

From a perspective, determining when drum brakes need replacement involves checking key points: whether the remaining thickness of the brake linings is below the 2mm standard (measurable with calipers), if the brake drum surface has cracks, grooves, or deformation (which can cause unstable braking), and unusual noises like squeaking indicating severe friction. I often remind friends that noticeable vehicle shaking or delayed response during braking is dangerous, necessitating checks for stuck springs or adjustment pins. For daily care, using specialized cleaners to prevent rust is advised—don't let minor issues escalate into major problems. Safety comes first; if problems arise, stop driving immediately and seek professional service.

As a seasoned driver with decades of experience driving drum brake models, my advice is to watch for wear signals: sudden increase in braking distance, difficulty controlling downhill; or severe rust after washing causing braking slippage. Common situations include excessively thin brake pads and drum body cracks affecting balance. Once detected, don't skimp and delay—replace them early for peace of mind. Pay extra attention during the rainy season, as water seepage can accelerate drum brake deterioration.

The rear wheels of my small car have drum brakes. Last time, the brakes made a 'squeaking' noise and vibrated, and after replacing them, I found they had reached the end of their lifespan. If you feel the brakes are unresponsive or the pedal is soft while driving, you should be alert, especially if the thickness is less than 2mm or there are signs of rust. Loud noises at high speeds are even more dangerous. I suggest checking them during every session to prevent problems before they occur. Safe driving should never be taken lightly.

Drum brakes need replacement under the following circumstances: severely worn brake pads with thickness below the standard value; damaged or deformed brake drum surface; sluggish braking response requiring excessive pedal force; abnormal noises such as friction sounds; and vehicle vibration during deceleration. Regular exposure to water or prolonged use leading to rust can also accelerate wear. If these signs are detected, stop driving and have the brakes inspected immediately—do not risk driving further.


