In summary, the lifespan of drum brake pads typically ranges from 30,000 to 70,000 miles, influenced by several factors including driving habits, vehicle type, and maintenance practices. Regular inspections and being attentive to signs of wear can help maintain brake performance, ensuring safety on the road. For vehicle owners, understanding the importance of drum brake maintenance is crucial for both safety and the longevity of their braking system.
Before we dive into the adjustment process, it’s important to understand the components of the drum brake assembly. The main parts include the brake drum, brake shoes, wheel cylinder, return springs, and adjuster. When you press the brake pedal, hydraulic pressure pushes the brake shoes outward against the inner surface of the drum, creating the necessary friction to slow down or stop the vehicle.
When a vehicle's brake system is engaged, friction occurs between the brake shoes and the brake drum. This friction generates heat, which is a normal and necessary part of the braking process. However, excessive heat can lead to various problems, including brake fade, warped drums, and decreased braking efficiency.
Севум, се, агар гармӣ давом кунад, он метавонад боиси канда кофтан ё шикастани компоненти механикӣ гардад. Ғайр аз ин, агар овардани дохилшудаи тормоз ба доираи маҳлули гармӣ ворид шавад, ин мегузорад, ки лутфан боқии дастгоҳҳо шахсан фаъол шаванд ва шикастам шаванд. Он метавонад боис гардад, ки мошин дар ҳолатҳои тохтусии ногаҳонӣ қарор гирад.
A typical drum brake line diagram illustrates several key components the brake drum, brake shoes, wheel cylinder, and the hardware kit, which includes springs and levers. The brake drum is a cylindrical component that rotates with the wheel. When the brake pedal is pressed, hydraulic pressure is generated in the brake line, pushing the piston in the wheel cylinder. This action causes the brake shoes to expand outward against the inner surface of the drum, creating friction that slows down or stops the vehicle.
On average, the cost to replace rear drum brake shoes ranges from $150 to $300 per axle, which typically includes both parts and labor. However, this can go higher depending on the factors mentioned above. For example, if your vehicle requires additional parts, such as drums or wheel cylinders, the total can rise to $400 or more.