The Crucial Role of Radiator Fans in Truck Engine Cooling
The Crucial Role of Radiator Fans in Truck Engine Cooling

The Crucial Role of Radiator Fans in Truck Engine Cooling

08/02/2025
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During a summer haul from Hanoi to Lao Cai, Tuan, a veteran driver for Thanh Cong Transport, experienced a near disaster. Under the scorching northern sun, his Hyundai HD120 truck suddenly began to overheat. The temperature gauge crept towards the red, signaling imminent engine damage.

After frantic troubleshooting, Tuan discovered the culprit: a failed radiator fan. Fortunately, he found a truck repair shop on Nguyen Van Linh Street in Long Bien District for a quick replacement, saving his beloved truck from serious harm.

Tuan’s experience highlights the vital role of radiator fans in maintaining optimal engine temperature, especially for trucks enduring heavy loads and long journeys. But what exactly is a radiator fan? How does it work, and what types are available? Let’s delve into the details with Hanoi Trucks.

What is a Radiator Fan?

A radiator fan is a crucial component of an engine’s cooling system. Its primary function is to draw air from the surroundings to cool the coolant circulating within the radiator. This process lowers the engine temperature, ensuring stable and reliable performance.

Functions of a Radiator Fan

  • Engine Temperature Reduction: The core function of a radiator fan is to cool the engine by drawing air across the radiator, reducing coolant temperature.
  • Enhanced Engine Performance: Effective cooling allows the engine to operate smoothly and achieve optimal performance.
  • Extended Engine Lifespan: High temperatures are a leading cause of engine damage. A properly functioning radiator fan significantly extends engine life.

Types of Radiator Fans

Two common types of radiator fans are available:

  • Mechanical Radiator Fans: These fans are directly connected to the engine via a belt. When the engine runs, the belt rotates, driving the fan.
  • Electronic Radiator Fans: Controlled by the Engine Control Unit (ECU), these fans activate based on coolant temperature readings from a sensor.

Mechanical radiator fanMechanical radiator fan

Radiator Fan Price Guide

Vehicle Type Fan Type Estimated Price (VNĐ)
Hyundai HD120 Truck Mechanical 1,500,000 – 2,000,000
Hyundai HD120 Truck Electronic 2,500,000 – 3,000,000
Isuzu QKR Truck Mechanical 1,200,000 – 1,800,000
Isuzu QKR Truck Electronic 2,000,000 – 2,500,000

Note: Prices are estimates and may vary depending on time, dealer, and specific vehicle model.

Radiator Fan Maintenance and Usage Tips

  • Regular Inspection: Inspect the radiator fan periodically (as recommended by the manufacturer or every 10,000 km) to detect potential issues.
  • Frequent Cleaning: Dust accumulation on fan blades reduces cooling efficiency. Regularly clean the radiator fan.
  • Timely Replacement: Replace a damaged or malfunctioning radiator fan promptly to ensure effective engine cooling.

Cleaning a radiator fanCleaning a radiator fan

Frequently Asked Questions about Radiator Fans

1. When should I replace my radiator fan?

Answer: Replace your radiator fan if you notice these signs:

  • Unusual noises from the fan.
  • Broken or bent fan blades.
  • Frequent engine overheating.

2. Where can I find reliable radiator fan replacement services?

Answer: Reputable auto repair shops or authorized dealerships offer reliable radiator fan replacement services. In Hanoi, consider garages on Tam Trinh Street (Hoang Mai District), Le Van Luong Street (Thanh Xuan District), or authorized Hyundai and Isuzu truck dealerships.

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