331.06.0008 Fan Belt Tensioner for DAF Trucks

What does a fan belt tensioner do?

The fan belt tensioner is a critical mechanical component within the cooling system of heavy commercial vehicles. It maintains the necessary tension on the belt driving the fan, ensuring that the cooling fan operates at its designed speed without slipping. By compensating for belt stretch caused by heat and mileage, this unit prevents overheating and ensures reliable engine thermal management.

Vehicle and engine compatibility

This specific tensioner is compatible with DAF CF and XF models, as well as DAF XD and XG units. It is engineered to work seamlessly with PACCAR MX-11 and MX-13 series engines, including various configurations like the FA 530, FT 530, and FAG 450. It is also suitable for other PACCAR engine applications in the heavy commercial vehicle sector.

Installation and maintenance

For optimal performance, technicians should inspect the tensioner during every cooling system service. Signs of wear include unusual belt noise or visible vibration in the belt assembly. When replacing the unit, it is essential to verify that the pulley alignment is correct and that all mounting bolts are tightened to the manufacturer's specified torque to prevent premature wear of the belt or pulley.

Troubleshooting and selection

Maintaining a stable tension is vital for preventing sudden belt failure in high-mileage fleets. Selecting a high-strength component ensures that the cooling system remains operational under heavy loads.

OE cross-reference

331.06.0008 (Fan Belt Tensioner Fan) is the equivalent of the DAF OE numbers. This part directly replaces DAF OE numbers 1878397, 1929107, 2019364, 2234864.