4979140
Water Pump
Cummins®

Introduction

The Cummins 4979140 Water Pump is a component designed for use in commercial trucks. It plays a role in the engine cooling system by ensuring that the engine operates within optimal temperature ranges. This is particularly significant for commercial trucks, which often operate under demanding conditions that can lead to increased engine temperatures ².

Basic Concepts of Water Pumps

Water pumps are integral to the engine cooling system of any vehicle. They function by circulating coolant through the engine and radiator, which helps to dissipate heat generated during operation. There are various types of water pumps, including mechanical and electric models, each with its own set of advantages. The primary role of a water pump is to maintain engine temperature, which is important for engine performance and longevity ¹.

Purpose of the Cummins 4979140 Water Pump

The Cummins 4979140 Water Pump is specifically engineered to meet the cooling needs of commercial truck engines. It circulates coolant through the engine block and cylinder heads, ensuring even heat distribution and effective cooling. This helps to maintain engine efficiency and prevent overheating, which can lead to engine damage. By ensuring consistent coolant flow, the water pump contributes to the overall performance and durability of the engine ².

Key Features

The Cummins 4979140 Water Pump is characterized by several key features that enhance its performance and durability. Its design incorporates high-quality materials that are resistant to corrosion and wear, ensuring longevity even under demanding conditions. The pump is engineered to provide efficient coolant circulation, which is vital for effective engine cooling. Additionally, it is designed to operate quietly and efficiently, minimizing noise and vibration ².

Benefits

The Cummins 4979140 Water Pump offers several advantages for commercial truck operators. Its efficient design contributes to improved engine cooling, which can enhance engine performance and longevity. The pump’s reliability reduces the likelihood of unexpected failures, which can be costly and inconvenient. Additionally, its efficient operation can contribute to fuel savings, making it a cost-effective choice for fleet operators ².

Installation and Compatibility

Proper installation of the Cummins 4979140 Water Pump is crucial for ensuring optimal performance. It is important to follow manufacturer guidelines during installation to ensure that the pump is securely fitted and properly aligned. The pump is designed to be compatible with a range of commercial truck models, though specific compatibility details should be verified with the manufacturer or through professional installation services ².

Maintenance and Troubleshooting

Regular maintenance of the Cummins 4979140 Water Pump is important for ensuring its continued efficient operation. This includes regular inspections for signs of wear or damage, such as leaks or unusual noises. Common issues may include impeller wear or gasket failure, which can often be addressed through routine maintenance checks. Troubleshooting tips may include checking for proper coolant levels and ensuring that the pump is securely fitted ².

Performance and Efficiency

The Cummins 4979140 Water Pump is designed to provide efficient coolant circulation under a variety of operating conditions. Its performance characteristics contribute to effective engine cooling, which is important for maintaining engine efficiency and preventing overheating. Efficient engine cooling can also contribute to improved fuel economy and reduced emissions, making it a valuable component for commercial truck operators ².

Cummins Overview

Cummins Inc. is a well-established manufacturer with a reputation for producing high-quality automotive components. The company has a long history of innovation and commitment to quality, which is reflected in its range of products, including the Cummins 4979140 Water Pump. Cummins’ dedication to producing reliable and efficient components makes it a trusted choice for commercial truck operators ².

Compatibility with Cummins Engines

The Cummins Water Pump part number 4979140 is designed to fit a variety of Cummins engines, ensuring efficient cooling and optimal performance. This water pump is engineered to meet the specific requirements of several engine models, providing reliable operation and durability.

G855 and N14 G Engines

The Water Pump 4979140 is compatible with the G855 and N14 G engines. These engines are known for their robust construction and high performance, often used in heavy-duty applications. The water pump ensures that the engine maintains the correct operating temperature, preventing overheating and extending the engine’s lifespan ².

NH/NT 855 Engines

The NH/NT 855 engines also benefit from the use of the Cummins Water Pump part number 4979140. This engine series is widely used in various industries, including agriculture and construction, where reliability and efficiency are paramount. The water pump’s design ensures that the engine’s cooling system operates smoothly, contributing to the engine’s overall performance and longevity ².

QSN14 CM876 N103 Engines

The QSN14 CM876 N103 engines are another series where the Water Pump 4979140 is a suitable fit. This engine model is known for its power and efficiency, making it a popular choice for various applications. The water pump’s compatibility with this engine ensures that the cooling system functions effectively, maintaining the engine’s optimal temperature and preventing potential damage from overheating ².

Role of Part 4979140 Water Pump in Engine Systems

The part 4979140 water pump is an integral component within the engine’s cooling system, working in conjunction with several other parts to maintain optimal engine temperature.

Integration with Engine Components

• Water Pump: The water pump, specifically part 4979140, circulates coolant throughout the engine. It is driven by a belt connected to the engine’s crankshaft, ensuring continuous operation as the engine runs.

• Base: The base of the water pump is designed to seal against the engine block, creating a watertight connection. This ensures that coolant flows efficiently from the pump into the engine’s cooling passages.

• Idler: The idler pulley assists in maintaining tension on the belt that drives the water pump. Proper tension is essential for the pump’s impeller to spin at the correct speed, facilitating effective coolant circulation ².

Function within the Cooling System

The water pump’s primary function is to move coolant from the radiator, through the engine block, and back to the radiator. This process helps dissipate heat generated by the engine’s combustion process.

• As the engine operates, heat is transferred from the cylinders to the coolant via the water jackets within the engine block.

• The heated coolant is then pumped to the radiator, where it releases heat to the ambient air, cooling down before returning to the engine ¹.

Interaction with Other Components

• Thermostat: The thermostat regulates the flow of coolant based on engine temperature. When the engine is cold, the thermostat remains closed, routing coolant back to the pump to circulate within the engine until it reaches operating temperature.

• Radiator: The radiator plays a key role in dissipating heat from the coolant. The water pump ensures a consistent flow of coolant through the radiator’s fins, enhancing heat exchange efficiency.

• Hoses and Pipes: These components facilitate the movement of coolant between the water pump, engine block, and radiator. The water pump generates the necessary pressure to push coolant through these pathways ¹.

Conclusion

In summary, the Cummins 4979140 Water Pump is essential for maintaining the engine’s thermal balance, ensuring it operates within safe temperature ranges and prolonging the engine’s lifespan. Its efficient design, compatibility with various Cummins engines, and reliable performance make it a valuable component for commercial truck operators ².