BM76340
Fuel Pump Damper Cover
Cummins®

Introduction

The BM76340 Fuel Pump Damper Cover, manufactured by Cummins, is a critical component in the fuel system of heavy-duty trucks. Cummins, a prominent name in the automotive and heavy-duty truck industry, is known for producing high-quality engine components. This part is designed to meet the rigorous demands of heavy-duty applications, ensuring efficient and reliable engine operation ¹.

Function and Operation

This Cummins part operates within the fuel system to maintain a consistent fuel flow to the engine. It works in conjunction with the fuel pump and other fuel system components. By damping the pulsations generated by the fuel pump, it stabilizes the fuel flow, which is essential for the smooth operation of the engine. This stabilization ensures that the engine receives a steady supply of fuel, which is vital for maintaining performance and efficiency ².

Purpose of the BM76340 Fuel Pump Damper Cover

The primary function of the Fuel Pump Damper Cover is to reduce the pulsations in the fuel line caused by the fuel pump. This reduction in pulsations leads to a more consistent fuel delivery to the engine, enhancing overall engine performance and contributing to better fuel efficiency. Additionally, by ensuring a stable fuel flow, it helps in minimizing the wear and tear on other fuel system components ³.

Key Features

The BM76340 is characterized by several key features that enhance its functionality. It is constructed from durable materials that are resistant to the harsh conditions found in heavy-duty truck environments. The design of the damper cover includes elements that facilitate efficient damping of fuel pulsations. Additionally, it is engineered to be compatible with a wide range of Cummins fuel systems, ensuring versatility and ease of integration into various truck models ⁴.

Benefits

The advantages provided by the BM76340 include improved fuel delivery, reduced noise and vibration from the fuel system, and enhanced durability. By ensuring a consistent fuel flow, it contributes to more efficient engine operation. The reduction in noise and vibration can lead to a quieter and more comfortable driving experience. Furthermore, its durable construction ensures long-term reliability, making it a valuable component for heavy-duty truck applications.

Installation and Compatibility

Proper installation of the BM76340 is crucial for ensuring optimal performance. It is important to follow the manufacturer’s guidelines for installation, which may include specific torque specifications and alignment requirements. Ensuring that the damper cover is correctly installed will help in achieving the desired damping effect and maintaining the integrity of the fuel system.

Troubleshooting and Maintenance

Identifying common issues related to the Fuel Pump Damper Cover can involve checking for signs of wear, leaks, or inconsistent fuel delivery. Diagnostic procedures may include inspecting the damper cover for physical damage and ensuring that it is securely installed. Regular maintenance practices, such as checking for proper installation and ensuring that all connections are tight, can help in prolonging the lifespan of the damper cover and ensuring reliable operation.

Cummins: A Brief Overview

Cummins Inc. is a global power leader that designs, manufactures, and distributes engines, filtration, and power generation products. With a history spanning over a century, Cummins has established a strong reputation in the automotive and heavy-duty truck industry for producing high-quality, reliable components. The company’s product range includes engines, powertrain components, and aftermarket parts, all designed to meet the needs of various industries and applications. Cummins is committed to innovation, sustainability, and customer satisfaction, making it a trusted name in the industry.

Cummins BM76340 Fuel Pump Damper Cover Compatibility

The BM76340 is designed to fit seamlessly into various Cummins engine models. This part is essential for maintaining the integrity and performance of the fuel system by providing a protective cover for the fuel pump damper.

ISM Series Engines

The BM76340 is compatible with several ISM series engines, including:

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

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

K Series Engines

The part also fits the following K series engines:

• K19
• K38
• K50

These engines are typically used in medium-duty applications, providing a balance of power and efficiency.

L10 Series Engines

The BM76340 is suitable for the L10 series engines, which include:

• L10 CELECT
• L10 MECHANICAL

These engines are designed for high-performance applications, often found in construction and agricultural equipment.

M11 Series Engines

The part is also compatible with the M11 series engines, such as:

• M11 CELECT
• M11 CELECT PLUS
• M11 MECHANICAL

These engines are versatile and widely used in various industries, including transportation and power generation.

N14 Series Engines

The BM76340 fits the N14 series engines, which include:

• N14 CELECT
• N14 CELECT PLUS
• N14 MECHANICAL

These engines are known for their durability and are often used in heavy-duty applications.

NH/NT 855

The part is also compatible with the NH/NT 855 engine, which is used in various heavy-duty applications.

QSK Series Engines

The BM76340 is suitable for the QSK series engines, including:

• QSK19 CM500
• QSK45 CM500
• QSK60 CM500

These engines are designed for high-performance applications, often found in marine and power generation.

QSM and QSNT Series Engines

The part fits the following QSM and QSNT series engines:

• QSM11 CM570
• QSM11 CM876
• QSN14 CM876 N103
• QSNT14 CM876 N102

These engines are known for their reliability and are often used in heavy-duty applications.

V Series Engines

Lastly, the BM76340 is compatible with the V series engines, such as:

• V28
• V903

These engines are designed for high-performance applications, often found in marine and power generation.

Role of Part BM76340 Fuel Pump Damper Cover in Engine Systems

The BM76340 is an integral component within various engine systems, ensuring efficient and reliable operation of the fuel pump. This cover is designed to work in conjunction with several key components to maintain the overall performance and stability of the fuel delivery system.

Integration with Fuel Pump Components

1. Fuel Pump & Drive (Custom and Wood): The damper cover is essential in mitigating vibrations and pulsations generated by the fuel pump drive mechanisms. Whether the drive is custom-made or of a specific wood design, the cover helps in smoothing out the fuel flow, which is vital for consistent engine performance.

2. Fuel Pump & CAL (Calibration): When paired with calibration systems, the damper cover ensures that the fuel pump operates within the specified parameters. This is particularly important in systems where precise fuel delivery is required to meet emission standards and performance metrics.

3. EBM: Pump (Electrically Driven Booster Module): In systems utilizing an electrically driven booster module, the damper cover plays a role in stabilizing the fuel pressure. This stabilization is crucial for the efficient operation of the EBM, ensuring that it delivers the required boost without undue stress or wear.

Interaction with Aftercooler and Auto/Hydraulic Assemblies

1. Aftercooler - Auto / Hydraulic Assembly: The damper cover works in synergy with aftercooler systems to maintain a stable fuel supply. Aftercoolers reduce the temperature of the air-fuel mixture, and a stable fuel flow ensured by the damper cover enhances the efficiency of this cooling process.

2. AFC-VS/TMD (Aftercooler with Variable Geometry Turbocharger): In advanced systems featuring variable geometry turbochargers, the damper cover helps in maintaining consistent fuel pressure. This consistency is essential for the turbocharger to operate efficiently across a range of engine speeds and loads.

Coordination with Fuel Codes and Ratings

1. Fuel Code and Fuel Rating Dummy Option: The damper cover is aligned with fuel codes and ratings to ensure that the fuel pump operates within the designated specifications. This alignment is critical for maintaining the integrity of the fuel delivery system and ensuring that the engine receives the correct fuel mixture.

2. Power Rating Sub-option: In engines with power rating sub-options, the damper cover assists in fine-tuning the fuel delivery to match the engine’s power output requirements. This ensures that the engine performs optimally under various operating conditions.

Support in Engine Spares and On-board Spares Kits

1. Engine Spares Kit and Kit On Board Spares: The damper cover is often included in engine spares kits due to its role in maintaining fuel pump efficiency. Having this component readily available ensures that maintenance can be performed swiftly, minimizing downtime.

2. Lloyds Spares: For systems certified under Lloyds standards, the damper cover is a key component in maintaining the high reliability and performance expected in marine and industrial applications.

Compatibility with Non-AFC Systems

1. Non-AFC Auto FP/B-C, Non-AFC Auto FP/Gov. Sump, Non-AFC Auto FP/WW Sump: In non-AFC (Aftercooler Fuel Control) systems, the damper cover ensures that the fuel pump operates smoothly, even in the absence of advanced aftercooling technologies. This compatibility is essential for engines that do not feature aftercoolers but still require stable fuel delivery.

2. Non-AFC VS FP/Gov. Sump: For engines with variable geometry sumps, the damper cover helps in maintaining consistent fuel pressure, ensuring that the fuel pump can adapt to changing engine demands.

Enhanced Performance with PTG Fuel Pump with Torque

1. PTG Fuel Pump with Torque: In systems where the fuel pump is designed to deliver torque-specific fuel requirements, the damper cover ensures that the fuel flow is consistent. This consistency is vital for engines that demand precise fuel delivery to achieve optimal torque output.

Throttle Control Systems

1. Throttle Control: The damper cover interacts with throttle control systems to ensure that the fuel pump can respond quickly to changes in engine load. This rapid response is essential for maintaining engine performance during acceleration and deceleration.

Conclusion

The BM76340 Fuel Pump Damper Cover is a versatile component that enhances the performance and reliability of various engine systems by ensuring stable and consistent fuel delivery. Its integration with a wide range of fuel pump and engine components underscores its importance in modern engine design.