5272007
Push Rod
Cummins®

Introduction

The Cummins 5272007 Push Rod is a component designed for use in commercial truck engines. It serves a specific function within the engine’s valve train mechanism, contributing to the overall operation and performance of the truck. Understanding its purpose and role is fundamental for maintaining and optimizing engine efficiency.

Basic Concepts of Push Rods

A push rod is a mechanical linkage used in overhead valve (OHV) engines to transmit motion from the camshaft to the valves. It operates by converting the rotational motion of the camshaft into linear motion that opens and closes the engine valves at precise intervals. This mechanism is vital for the proper timing of the valve events, which in turn affects the engine’s combustion process and overall performance ¹.

Role of the 5272007 Push Rod in Truck Operation

The Cummins 5272007 Push Rod plays a role in the engine’s operation by connecting the camshaft to the rocker arms. As the camshaft rotates, it actuates the push rod, which then moves the rocker arm. This action opens the valve, allowing air and fuel into the combustion chamber or expelling exhaust gases. The precise interaction between the push rod, camshaft, and rocker arm is crucial for maintaining the engine’s efficiency and reliability ².

Key Features

The 5272007 Push Rod is characterized by its material composition and design. It is typically made from high-quality steel, ensuring durability and resistance to wear. Its design includes specific dimensions and tolerances to ensure a snug fit within the engine’s valve train components. Additionally, the push rod may feature unique attributes such as a polished surface to reduce friction and enhance performance.

Benefits

The use of the 5272007 Push Rod in commercial truck engines can lead to improved engine efficiency, reliability, and longevity. By ensuring precise valve timing and operation, it contributes to the engine’s overall performance. The durability and quality of the push rod also mean fewer maintenance intervals and a longer service life for the engine components.

Troubleshooting and Maintenance

Common issues with push rods may include wear, bending, or breakage, which can affect engine performance. Regular inspection and maintenance are recommended to identify and address these issues promptly. Diagnostic tips include checking for unusual engine noises, monitoring engine performance, and conducting routine inspections during maintenance intervals. Proper lubrication and adherence to manufacturer-recommended maintenance schedules are also important for ensuring the optimal performance and longevity of the 5272007 Push Rod ³.

About Cummins

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 reputation for producing high-quality components, Cummins is committed to advancing the technologies that power our world. Their automotive components, including the 5272007 Push Rod, are designed with precision and quality in mind, reflecting Cummins’ dedication to excellence in the industry.

Cummins Push Rod 5272007 Compatibility

The Cummins Push Rod 5272007 is designed to fit within a variety of Cummins engine models. This part is essential for maintaining the operational integrity of the engine by ensuring proper valve operation. Below is a detailed description of the engines with which this push rod is compatible.

Compatible Engines

• B4.5 CM2350 B129B
• D4.0 CM2620 D103B
• F3.8 CM2350 F120B
• F3.8 CM2350 F128C
• F3.8 CM2620 F137B
• F3.8 F102
• F4.5 CM2620 F139B
• F4.5 CM2620 F141C
• ISB4.5 CM2350 B104
• ISF3.8 CM2220 AN
• ISF3.8 CM2220 F103
• ISF3.8 CM2350 F109
• ISF4.5 CM2220 F123
• QSF3.8 CM2350 F107
• QSF3.8 CM2880 F112

Grouping by Engine Series

• F3.8 Series

  • F3.8 CM2350 F120B
  • F3.8 CM2350 F128C
  • F3.8 CM2620 F137B
  • F3.8 F102
  • ISF3.8 CM2220 AN
  • ISF3.8 CM2220 F103
  • ISF3.8 CM2350 F109
  • QSF3.8 CM2350 F107

• F4.5 Series

  • F4.5 CM2620 F139B
  • F4.5 CM2620 F141C
  • ISB4.5 CM2350 B104
  • ISF4.5 CM2220 F123

• D4.0 Series

  • D4.0 CM2620 D103B

• B4.5 Series

  • B4.5 CM2350 B129B

• QSF3.8 Series

  • QSF3.8 CM2880 F112

This push rod is engineered to meet the specific requirements of each engine series, ensuring compatibility and optimal performance. It is crucial to verify the engine model before installation to ensure the correct fit and function of the push rod.

Role of Part 5272007 Push Rod in Engine Systems

The 5272007 Push Rod is a component in the operation of various engine systems, particularly in the interaction between the camshaft and the valve train. This push rod transmits motion from the camshaft to the rocker arm, ensuring precise and efficient valve operation.

Interaction with the Lever and Rocker Arm

1. Camshaft to Rocker Arm Transmission: The primary function of the 5272007 Push Rod is to transfer the motion generated by the camshaft lobes to the rocker arms. As the camshaft rotates, its lobes push against the push rod, which in turn moves the rocker arm. This motion is vital for opening and closing the engine’s valves at the correct times.

2. Amplification of Motion: The push rod works in conjunction with the rocker arm to amplify the motion initiated by the camshaft. The rocker arm, pivoting on a fulcrum, uses the push rod’s movement to open the valves wider and faster than the camshaft’s direct action could achieve. This amplification ensures that the valves open sufficiently to allow the necessary airflow for combustion.

3. Maintaining Valve Timing: Consistent and reliable operation of the 5272007 Push Rod is key to maintaining proper valve timing. Any deviation in the push rod’s performance can lead to mistimed valve operations, affecting engine efficiency and performance. The push rod must withstand the high stresses and temperatures within the engine compartment while delivering consistent performance.

4. Reducing Mechanical Wear: By acting as an intermediary between the camshaft and the rocker arm, the push rod helps in reducing direct mechanical wear on these components. This indirect contact minimizes the friction and wear that would otherwise occur if the camshaft were to interact directly with the rocker arm, prolonging the lifespan of both components.

Conclusion

In summary, the 5272007 Push Rod plays a significant role in ensuring the smooth and efficient operation of the valve train in engine systems. Its reliable performance is fundamental to the precise timing and effective functioning of the engine’s valves.