4071248
Belt Tensioner
Cummins®

The Cummins 4071248 Belt Tensioner is a component designed for use in commercial trucks. It serves to maintain the appropriate tension on the drive belts within the engine system, ensuring efficient operation of various engine accessories.

Basic Concepts of Belt Tensioners

A belt tensioner is a device used in an engine system to keep the drive belts at the correct tension. It functions by applying consistent pressure to the belt, which helps in reducing slippage and wear. Proper belt tension is vital for the efficient transfer of power to components such as the alternator, water pump, and air conditioning compressor ¹.

Purpose of the Cummins 4071248 Belt Tensioner

This Cummins part plays a specific role in the operation of a truck by maintaining the correct tension on the drive belts. This ensures that the belts operate efficiently and with minimal wear, contributing to the overall reliability of the truck’s accessory systems.

Key Features

This part is characterized by its robust design and the use of high-quality materials. These features contribute to its performance and durability. The tensioner is engineered to withstand the demanding conditions of commercial truck operations, ensuring long-term reliability.

Benefits of Using the Cummins 4071248 Belt Tensioner

Utilizing this part offers several advantages. It contributes to improved engine efficiency by ensuring that the drive belts operate under the correct tension. This reduces wear on the belts and enhances the reliability of the truck’s accessory systems, leading to potentially lower maintenance costs and increased uptime.

Installation Considerations

When installing this part, it is important to follow specific guidelines to ensure compatibility with the truck model and proper function. Installation procedures should be adhered to closely to avoid issues such as improper belt tension, which could lead to accessory failure or increased wear on the belts.

Troubleshooting Common Issues

Common problems associated with belt tensioners include noise, belt slippage, and tensioner failure. Troubleshooting these issues involves checking the tensioner for signs of wear or damage, ensuring the belts are correctly routed and tensioned, and addressing any mechanical issues that may affect the tensioner’s operation.

Maintenance Tips

To maintain this part, regular inspections are recommended. Look for signs of wear or damage on the tensioner and belts. Adhering to best practices for maintenance, such as keeping the tensioner clean and free from debris, can help prolong its lifespan and ensure continued efficient operation.

Cummins Overview

Cummins Inc. is a global power leader that designs, manufactures, and distributes engines, filtration, and power generation products. With a history of innovation and a broad product range, Cummins has established a strong reputation in the commercial truck industry for quality and reliability.

Belt Tensioner Part 4071248 Compatibility with Cummins Engines

The Belt Tensioner part number 4071248, manufactured by Cummins, is designed to fit a variety of Cummins engines. This part is crucial for maintaining the proper tension of the engine’s serpentine belt, ensuring efficient operation and longevity of the belt and related components.

ISM Series Engines

• ISM CM570
• ISM CM570/870
• ISM11 CM876 SN

This part is compatible with the ISM series engines, including the ISM CM570, ISM CM570/870, and ISM11 CM876 SN. These engines are known for their robust performance and reliability, often used in heavy-duty applications.

M11 Series Engines

• M11 CELECT
• M11 CELECT PLUS
• M11 MECHANICAL

For the M11 series engines, this part is also suitable. This includes the M11 CELECT, M11 CELECT PLUS, and M11 MECHANICAL variants. These engines are designed for versatility and efficiency, making them ideal for a range of applications.

Other Cummins Engines

• QSM11 CM570
• VTA903 CM2250 V105

Additionally, this part fits the QSM11 CM570 and VTA903 CM2250 V105 engines. These engines are engineered for specific performance needs, ensuring that the belt tensioner part maintains the necessary tension for optimal engine function.

Role of Part 4071248 Belt Tensioner in Engine Systems

This part is an essential component in maintaining the proper function of various engine systems. It ensures that the belts driving multiple components are kept at the correct tension, which is vital for the efficient operation of these systems.

Interaction with Mounting Components

The Belt Tensioner is mounted on the engine using specific mounting brackets. These brackets are designed to securely hold the tensioner in place while allowing it to move as needed to maintain belt tension. The interaction between the tensioner and its mounting points is key to ensuring that the belt remains taut under varying engine conditions.

Coordination with Refrigerant Compressor

In systems where a refrigerant compressor is belt-driven, the Belt Tensioner plays a significant role. It ensures that the belt driving the compressor maintains the necessary tension to operate efficiently. This is important for the consistent performance of the air conditioning system, as any slack in the belt can lead to inefficient compressor operation and potential damage.

Synergy with Pump Systems

Belt-driven pumps, such as those for coolant or power steering, rely on the Belt Tensioner to keep the belts taut. This ensures that the pumps receive consistent power from the engine, allowing them to maintain the required flow rates for their respective systems. Proper belt tension is essential for the reliable operation of these pumps, preventing issues such as overheating or steering difficulties.

Integration with Water Pump

The water pump, a critical component for engine cooling, often relies on a belt driven by the crankshaft. The Belt Tensioner ensures that the belt remains properly tensioned, allowing the water pump to circulate coolant effectively through the engine. This helps in maintaining optimal engine temperature and preventing overheating, which can lead to severe engine damage.

Conclusion

In summary, the part 4071248 Belt Tensioner is integral to the proper functioning of various engine-driven components. Its role in maintaining belt tension is essential for the efficient and reliable operation of mounting systems, refrigerant compressors, pumps, and the water pump.