Common Causes of AC Compressor Failure in Trucks and Effective Solutions

“Hot as fire” accurately describes Hanoi summers. Amidst the sweltering heat, a truck’s AC becomes a lifesaver. But what happens when this “savior” malfunctions? A broken AC compressor is a nightmare for any driver, especially truckers on long hauls. This article diagnoses your AC system, explores the causes of compressor failure, and offers preventative measures.

Why Your Truck’s AC Compressor Fails

The AC compressor, the heart of the cooling system, compresses and circulates refrigerant. When it fails, the “heart” weakens, severely impacting cooling. So, what causes this?

1. Lack of or No Lubricating Oil

Like the engine, the AC compressor needs lubrication for smooth operation. Insufficient oil causes internal parts to wear down, increasing friction, leading to overheating and damage.

FAQ: How do I know if the AC compressor is low on oil?

Answer: Signs of low lubricating oil include:

• Unusual noises from the compressor.
• Weak cooling performance.
• Low refrigerant pressure.

Expert Advice: Nguyen Van A, a technician at Hung Vuong Auto Repair in Ha Dong, advises: “For optimal compressor performance, check and replenish lubricating oil according to the manufacturer’s recommendations.”

2. Internal Component Damage

The AC compressor consists of many small parts operating under high pressure. Over time, components like pistons, cylinders, and valves can wear out or break, leading to reduced efficiency or complete failure.

3. Blocked Refrigerant System

Clogs from dirt and debris buildup in the refrigerant system can also cause compressor failure. A blocked system forces the compressor to work harder, leading to overload and damage.

FAQ: How often should I clean my truck’s AC system?

Answer: For optimal performance, clean the AC system every 6 months or 10,000 km. Visit reputable garages like My Dinh Auto Repair (Le Duc Tho Street, My Dinh, Nam Tu Liem) for professional cleaning.

4. Using Low-Quality Refrigerant

Low-quality refrigerant containing impurities can clog and corrode internal compressor parts, leading to damage.

Note: Use genuine refrigerant from reputable sources to ensure the longevity of your AC system.

5. Incorrect Installation

Incorrect compressor installation can lead to inefficient operation and damage to the compressor and other components.

Recommendation: Choose reputable garages or service centers for AC compressor installation.

A Trucker’s Tale of Woe with a Hino Truck

Tuan, a seasoned Hino truck driver, frequently travels between Hanoi and Hai Phong. Last summer, during a rush delivery, his AC faltered, emitting only weak cool air. Even at maximum fan speed, the stifling cabin heat was unbearable.

Suspecting a problem, Tuan stopped at a roadside garage. The mechanic diagnosed a failed compressor due to lack of oil. Tuan regretted neglecting regular AC maintenance. He had to replace the compressor at considerable cost.

Since then, Tuan learned his lesson and prioritizes regular maintenance for his Hino truck, especially the AC system.

Hino truck

Conclusion

AC compressor failure is undesirable, impacting comfort and safety. This article provides insights into the causes and prevention of this issue.

Share your AC experiences and visit xetaihanoi.edu.vn for more truck-related information!

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