3969562
Connecting Rod Bearing
Cummins®

Introduction

The Cummins 3969562 Connecting Rod Bearing is a component designed for use in heavy-duty truck engines. Its purpose is to facilitate the smooth operation of the engine by reducing friction between the connecting rod and the crankshaft. This bearing plays a role in ensuring the efficient transfer of power from the piston to the crankshaft, contributing to the overall performance and reliability of the engine ⁴.

Basic Concepts of Connecting Rod Bearings

Connecting rod bearings are integral components within an engine, positioned between the connecting rod and the crankshaft. Their function is to allow for the smooth rotation of the crankshaft as it is pushed by the connecting rod, which is in turn driven by the piston. These bearings operate by providing a low-friction surface that minimizes wear and tear on the engine components, thereby facilitating smooth engine performance and efficiency ¹.

Role of the 3969562 Connecting Rod Bearing in Truck Operation

In the context of heavy-duty truck engines, the 3969562 Connecting Rod Bearing plays a specific role in ensuring the efficient operation of the engine. It interacts with the connecting rod and crankshaft, allowing for the smooth transfer of power generated by the piston’s movement. This bearing’s design and material composition are tailored to withstand the high loads and stresses encountered in heavy-duty applications, ensuring reliable engine performance under demanding conditions ².

Key Features

The 3969562 Connecting Rod Bearing is characterized by several key features that enhance its performance and durability. These include a precision-engineered design that ensures optimal fit and function within the engine, a material composition that provides high resistance to wear and corrosion, and unique attributes such as advanced coating technologies that further reduce friction and improve longevity. These features collectively contribute to the bearing’s ability to operate efficiently in the harsh environment of a heavy-duty truck engine ³.

Benefits

The use of the 3969562 Connecting Rod Bearing in heavy-duty truck engines offers several benefits. These include improved engine efficiency due to reduced friction, which allows for smoother operation and potentially lower fuel consumption. Additionally, the bearing’s design and material properties contribute to reduced wear on engine components, enhancing the longevity of the engine. The overall result is a more reliable and efficient engine performance, which is critical for the operation of heavy-duty trucks ⁴.

Troubleshooting and Maintenance

Common issues associated with connecting rod bearings can include excessive wear, noise during engine operation, or failure due to contamination or improper lubrication. Troubleshooting these problems involves a thorough inspection of the bearing and related components, checking for signs of wear, damage, or misalignment. Maintenance practices to ensure the longevity and optimal performance of the 3969562 Connecting Rod Bearing include regular inspection, proper lubrication, and adherence to manufacturer-recommended service intervals. These practices help prevent premature failure and ensure the bearing continues to operate efficiently ¹.

About Cummins

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 spanning over a century, Cummins has established itself as a leader in the diesel engine manufacturing industry, known for its commitment to quality, innovation, and customer satisfaction. The company’s expertise in engine technology and components is reflected in its product offerings, which are designed to meet the demanding requirements of various industries, including heavy-duty trucking ².

Connecting Rod Bearing 3969562 Compatibility with Cummins Engines

The Cummins Connecting Rod Bearing part number 3969562 is designed to fit a variety of Cummins engines. This part is crucial for maintaining the smooth operation of the engine by reducing friction between the connecting rod and the crankshaft. Below is a detailed description of the engines with which this bearing is compatible.

4B3.9 and 6B5.9 Engines

The 4B3.9 and 6B5.9 engines are part of the B-series family, known for their reliability and performance in various applications. The 3969562 bearing is engineered to fit these engines, ensuring optimal performance and longevity.

B3.3, B4.5, and B5.9 Engines

The B3.3, B4.5, and B5.9 engines are another subset of the B-series engines. The 3969562 bearing is compatible with these engines, providing the necessary support and reducing wear and tear.

• B3.3
• B4.5 CM2350 B129B
• B4.5 RGT
• B5.9
• B5.9 CM2670 B166C
• B5.9 GAS PLUS CM556

B5.6, B6.7, and G5.9 Engines

The B5.6, B6.7, and G5.9 engines represent a more advanced range within the Cummins lineup. The 3969562 bearing is designed to fit these engines, ensuring they run smoothly and efficiently.

• B5.6 CM2670 B152B
• B6.7 CM2350 B135B
• B6.7 CM2670 B153B
• B6.7 CM2670 B164C
• B6.7 G CMOH6.0 B125
• G5.9
• G5.9 CM558

ISB Engines

The ISB (Intra-Cylinder Sleeve Bearing) engines are a significant part of Cummins’ product line, known for their durability and efficiency. The 3969562 bearing is compatible with various ISB engines, ensuring they maintain their performance standards.

• ISB (Chrysler)
• ISB CM2150
• ISB CM550
• ISB CM850
• ISB/ISD4.5 CM2150 B119
• ISB/ISD6.7 CM2150 SN
• ISB3.9 CM2220 B107
• ISB4.5 CM2350 B104
• ISB5.9 CM2880 B110

F3.8 Engine

The F3.8 engine is another model that benefits from the 3969562 bearing, ensuring its smooth operation and longevity.

• F3.8 CM2620 F137B

This comprehensive compatibility ensures that the 3969562 bearing can be used across a wide range of Cummins engines, providing a reliable solution for maintaining engine performance ³.

Role of Part 3969562 Connecting Rod Bearing in Engine Systems

The part 3969562 Connecting Rod Bearing is an essential component in various engine systems, particularly within the context of short blocks and cylinder blocks. This bearing facilitates the smooth operation of the connecting rod, which in turn links the piston to the crankshaft.

In the Block 6-B Short, Block Short, and Short 6-B Block configurations, the connecting rod bearing ensures minimal friction between the connecting rod and the crankshaft journal. This is vital for the efficient transfer of power from the piston’s reciprocating motion to the crankshaft’s rotational motion.

For the Short 4BTA Block, Short 6-BT Block, Short E2 215/235 Block, and Short E2 Block, the part 3969562 bearing plays a similar role. It supports the connecting rod’s movement, reducing wear and tear on both the rod and the crankshaft. This bearing is also integral in the Short E1 180 Block and Short E3 Incent Block, where it contributes to the overall durability and performance of the engine.

In the Cylinder Short Block and Cylinder Block, the connecting rod bearing is part of a comprehensive system that includes the engine piston, injector plumbing, and pistonless overhaul kit. Here, it ensures that the connecting rod operates smoothly, which is essential for the engine’s reliability and efficiency.

For the Service Block and Short Block 6-BT, the bearing is a key component in the connecting rod and pistons assembly. It allows for the precise alignment and movement necessary for optimal engine function.

In summary, the part 3969562 Connecting Rod Bearing is a fundamental element in various engine blocks and short blocks, ensuring the smooth and efficient operation of the connecting rod within the engine system ⁴.

Conclusion

The Cummins 3969562 Connecting Rod Bearing is a critical component in heavy-duty truck engines, designed to reduce friction and ensure efficient power transfer from the piston to the crankshaft. Its precision-engineered design, high resistance to wear and corrosion, and advanced coating technologies contribute to its durability and performance. The bearing is compatible with a wide range of Cummins engines, providing reliable operation and enhancing engine efficiency and longevity.