Semi-truck drivers take many precautions to remain on schedule, but most experience the occasional breakdown. However, there are ways to maintain truck parts to lessen the chance of future problems. Here are some of the most common reasons semi-trucks break down and how to prevent these issues.

What Causes Semi-Trucks to Break Down?

1. Faulty Tires

Because they routinely haul heavy loads, semi-trucks are at increased risk of experiencing tire blowouts. Tire failure accounts for more than half of semi-truck breakdowns. Overloading the vehicle, under-inflation, and poor tread depth make the tires more vulnerable to flats and blowouts. To avoid problems, follow the truck's weight restrictions and assess tread wear regularly, and schedule regular tire rotations and alignments.

2. Battery Failure

A battery can last from three to five years, but it may be susceptible to premature failure if you drive your semi-truck in cold climates. Some signs a replacement is needed include flickering lights when you stop the vehicle and trouble turning over the engine. A battery often corrodes over time, but regular cleaning will lengthen its life span. A damaged alternator can also impact battery charging, especially if it’s delivering the wrong amount of voltage, so test this truck part regularly.

3. Engine Malfunction

A semi-truck engine has the potential to last for up to 750,000 miles. Changing the oil approximately every 25,000 miles is key to protecting the engine’s efficiency and reducing friction that could damage metal components. Common signs of problems include reduced fuel efficiency and difficulty reaching your desired speed.

4. Brake Damage

The truck’s disc and drum brakes are exposed to frequent pressure, heat, and friction, causing them to wear down over time. Most semi-trucks use air brake systems, which are vulnerable to developing air leaks that affect stopping time and efficiency. Test their leakage rate by running the truck so the compression reservoir charges. Then power off the engine, release the parking brake, and time the rate at which pressure drops. If it’s more than 2 pounds per square inch each minute, there’s likely an air leak. It’s crucial to repair this promptly to prevent sudden breakdowns.

If you’re seeking high-quality truck parts for your semi, turn to The Best Shop in Soldotna, AK. Their mechanics are proud to serve drivers across the Kenai Peninsula, offering everything from repairs to heavy-duty tire service. Visit the website to learn more about their products and services, or call (907) 262-8785 to speak with a representative.