3055742
Injector Stop Screw
Cummins®

Introduction

The Cummins Injector Stop Screw, identified by part number 3055742, is a critical component in the management of diesel engines. It is designed to facilitate precise control over fuel delivery and plays a significant role in the shutdown procedures of the engine. Understanding its function and importance is essential for maintaining optimal engine performance and ensuring safety in commercial truck operations.

Function and Operation

The Injector Stop Screw operates within the fuel injection system to regulate the flow of fuel to the engine. By adjusting the screw, operators can control the amount of fuel delivered, which directly influences engine performance. Additionally, the screw is involved in the engine shutdown process, allowing for a controlled and safe cessation of engine operation. This mechanism ensures that the engine can be stopped promptly in emergency situations or during routine maintenance ¹.

Key Features

The design and construction of the Injector Stop Screw are tailored for durability and efficiency. It is typically made from high-strength materials to withstand the harsh conditions of diesel engine environments. The threading specifications are precise, ensuring a secure fit within the injection system. Unique attributes, such as corrosion resistance and ease of adjustment, enhance its performance and longevity ².

Role in Truck Operation

In the context of commercial truck operation, the Injector Stop Screw contributes to several aspects of performance. It aids in achieving better fuel efficiency by allowing for fine-tuned control over fuel delivery. This precision also impacts engine performance, ensuring that the engine operates within optimal parameters. Furthermore, the screw’s role in safe engine shutdown procedures is a critical safety feature, protecting both the vehicle and its occupants ³.

Benefits

The Cummins Injector Stop Screw offers several advantages. Its design allows for precise fuel control, which can lead to improved fuel efficiency and reduced operating costs. The component is reliable under harsh operating conditions, ensuring consistent performance over time. Additionally, by enabling more precise fuel delivery, it contributes to efforts in reducing emissions, aligning with environmental regulations and standards.

Troubleshooting and Maintenance

Common issues with the Injector Stop Screw may include wear and tear, leading to less precise fuel control, or difficulties in adjusting the screw. Diagnostic procedures involve checking for proper fit and function within the injection system. Regular maintenance practices, such as cleaning and inspecting the screw for damage, are recommended to ensure optimal performance and longevity.

Installation and Replacement

Proper installation and replacement of the Injector Stop Screw require adherence to specific procedures. This includes ensuring the correct torque specifications are met to secure the screw in place without over-tightening, which could damage the component or the injection system. Precautions should be taken to avoid contamination of the fuel system during installation.

Cummins Overview

Cummins Inc. is a global power leader that designs, manufactures, and distributes a wide range of power solutions, including diesel and natural gas engines, as well as related technologies. With a history of innovation and a commitment to sustainability, Cummins serves commercial, industrial, and transportation markets worldwide. The company’s product portfolio is designed to meet the evolving needs of its customers, emphasizing efficiency, reliability, and environmental responsibility.

Compatibility of Injector Stop Screw Part 3055742 with Cummins Engines

The Injector Stop Screw part number 3055742, manufactured by Cummins, is designed to fit a variety of Cummins engines. This part plays a role in the operation of the fuel injection system by controlling the stop position of the injectors, ensuring precise fuel delivery and engine performance.

K-Series Engines

The Injector Stop Screw part 3055742 is compatible with the following K-Series engines:

• K19
• K38
• K50

These engines are known for their robust design and are often used in heavy-duty applications, where reliability and performance are paramount.

M-Series Engines

For the M-Series engines, the part 3055742 fits both:

• M11 CELECT PLUS
• M11 MECHANICAL

The M11 engines are widely recognized for their advanced electronic controls and mechanical robustness, making them suitable for a variety of demanding applications.

N-Series Engines

The N14 MECHANICAL engine is also compatible with the Injector Stop Screw part 3055742. This engine is known for its durability and efficiency, often used in on-highway and vocational applications.

NH/NT Series Engines

The NH/NT 855 engine is another model that can utilize the Injector Stop Screw part 3055742. This engine is designed for heavy-duty applications and is known for its power and reliability.

V-Series Engines

Lastly, the Injector Stop Screw part 3055742 is compatible with the V-Series engines:

• V903
• VTA903 CM2250 V105

These engines are engineered for high-performance applications, offering exceptional power and efficiency. The V903 and VTA903 CM2250 V105 engines are often used in demanding environments where reliability and performance are critical.

Role of Part 3055742 Injector Stop Screw in Engine Systems

The Injector Stop Screw, identified by part number 3055742, is an integral component in the orchestration of various engine systems. Its primary function is to regulate the fuel injection process, ensuring precise control over the amount of fuel delivered to the combustion chamber. This regulation is vital for maintaining engine performance, efficiency, and emissions standards.

Interaction with EBM-Injector and EBM-Performance Parts

When integrated with EBM-injectors and EBM-performance parts, the Injector Stop Screw plays a significant role in fine-tuning the injection parameters. It works in conjunction with the injector plumbing to manage fuel delivery, directly impacting the engine’s power output and fuel economy. The screw’s adjustment capabilities allow for optimization of the injection timing and quantity, which is essential for maximizing the performance of EBM: performance parts.

Coordination with Cylinder Head and Camshaft

The Injector Stop Screw’s function is closely tied to the operation of the cylinder head and camshaft. By controlling the fuel injection, it influences the air-fuel mixture that enters the combustion chamber. This mixture is then compressed by the piston, guided by the camshaft and cam follower housing, before ignition. Proper fuel injection timing and quantity are essential for efficient combustion, which in turn affects the overall performance and longevity of the engine.

Impact on Oil and Fuel Systems

The screw also interacts with the oil connection and fuel connection systems. It ensures that the fuel is injected at the optimal moment, which is particularly important in engines with oil control valves and oil manifolds. The precise control over fuel injection helps in maintaining the correct lubrication and cooling of engine parts, including the connecting rod and piston, thus enhancing engine durability and performance.

Role in Turbocharger and Tachometer Systems

In turbocharged engines, the Injector Stop Screw’s role becomes even more significant. It must work in harmony with the turbocharger to ensure that the increased air flow is matched with the appropriate fuel quantity. This balance is crucial for preventing issues like detonation or excessive heat, which can damage engine components. Additionally, the screw’s precise control over fuel injection can influence readings from the tachometer, providing accurate data on engine RPM and performance.

Integration with On Board Spares and Kit Components

Finally, the Injector Stop Screw is often part of on board spares and various engine kits. Its adjustability makes it a key component in these kits, allowing for easy modifications and adjustments to the engine’s fuel injection system. This flexibility is particularly useful in performance tuning and maintenance scenarios, where quick adjustments to the fuel system can be necessary.

Conclusion

The Injector Stop Screw (part 3055742) is a versatile and essential component in modern engine systems. Its role in regulating fuel injection has a widespread impact on various engine components and systems, from the cylinder head and camshaft to the turbocharger and performance parts. Understanding and maintaining this part is crucial for ensuring optimal engine performance, efficiency, and safety in commercial truck operations.