4928698
Rocker Lever Assembly
Cummins®

The Rocker Lever Assembly 4928698, manufactured by Cummins, is a vital component used in commercial trucks. Cummins, a well-established name in the automotive industry, is renowned for its high-quality engine components. This Cummins part is designed to enhance the performance and reliability of truck engines, ensuring efficient operation under demanding conditions.

Basic Concepts of Rocker Lever Assembly

Rocker lever assemblies are mechanical devices that play a role in the valve operation within an engine. They act as a linkage between the camshaft and the valves, transmitting motion to open and close the valves at precise intervals. This mechanism is essential for the intake and exhaust processes, which are fundamental to engine operation. The rocker lever amplifies the motion from the camshaft, ensuring that the valves open sufficiently to allow the necessary airflow for combustion ¹.

Purpose of the 4928698 Rocker Lever Assembly

The 4928698 Rocker Lever Assembly is specifically engineered to facilitate the operation of valves in truck engines. It interacts with the camshaft and pushrods to ensure that the valves open and close in sync with the engine’s timing. This assembly plays a role in maintaining the engine’s efficiency by ensuring proper valve operation, which is vital for optimal combustion and overall engine performance.

Key Features

The 4928698 Rocker Lever Assembly boasts several key features that enhance its performance and durability. It is constructed from high-quality materials, such as hardened steel, which provide resistance to wear and corrosion. The design includes precision-machined surfaces to ensure smooth operation and minimal friction. Additionally, the assembly features robust mounting points and adjustable components to accommodate various engine configurations and ensure a secure fit.

Benefits

The 4928698 Rocker Lever Assembly offers several advantages. Its high-quality construction contributes to improved engine efficiency by ensuring precise valve operation. The durable materials and robust design enhance the assembly’s longevity, reducing the need for frequent replacements. Furthermore, the assembly’s reliable performance contributes to the overall reliability of the engine, making it a valuable component for commercial truck applications.

Installation Process

Installing the 4928698 Rocker Lever Assembly requires careful attention to detail. Begin by ensuring the engine is clean and free of debris. Position the assembly over the valve and align it with the camshaft and pushrod. Secure the assembly in place using the provided fasteners, ensuring they are tightened to the manufacturer’s specified torque settings. Verify the alignment and operation of the assembly by manually rotating the engine and observing the valve movement. Finally, conduct a thorough inspection to confirm that all components are properly installed and functioning as intended.

Common Issues and Troubleshooting

Rocker lever assemblies can encounter several common issues, such as worn pivot points, loose fasteners, or misaligned components. These problems can lead to valve train noise, reduced engine performance, or even valve failure. To troubleshoot these issues, inspect the assembly for signs of wear or damage. Tighten any loose fasteners and realign the components as necessary. If significant wear is detected, replacement of the affected parts may be required to restore proper function.

Maintenance Tips

Regular maintenance is key to ensuring the longevity and optimal performance of the 4928698 Rocker Lever Assembly. Inspect the assembly during routine engine servicing for signs of wear, corrosion, or misalignment. Lubricate the pivot points and other moving parts as recommended by the manufacturer to reduce friction and wear. Additionally, ensure that the fasteners are tightened to the specified torque settings to maintain a secure fit. Addressing these maintenance practices will help prevent common issues and extend the service life of the assembly.

Cummins Overview

Cummins Inc. is a global power leader that designs, manufactures, and distributes engines, filtration, and power generation products. Founded in 1919, Cummins has a long-standing reputation for innovation and quality in the commercial truck industry. The company offers a wide range of products, including diesel and natural gas engines, as well as aftermarket parts and services. Cummins’ commitment to excellence and customer satisfaction has established it as a trusted name in the automotive and heavy-duty truck sectors.

Compatibility of Rocker Lever Assembly Part 4928698 with Cummins Engines

The Rocker Lever Assembly part 4928698, manufactured by Cummins, is a critical component in the valve train system of various Cummins engines. This part is designed to fit seamlessly with a range of engine models, ensuring optimal performance and reliability. Below is a detailed description of its compatibility with different engine types.

B Series Engines

• B4.5 RGT
• B6.7 CM2350 B135B
• B6.7 CM2670 B153B
• B6.7 CM2670 B164C
• B6.7 G CMOH6.0 B125

The Rocker Lever Assembly part 4928698 is compatible with the B4.5 RGT and several B6.7 models, including the CM2350 B135B, CM2670 B153B, CM2670 B164C, and G CMOH6.0 B125. This part ensures proper valve operation and timing, contributing to the engine’s overall efficiency and longevity.

ISB Series Engines

• ISB (Chrysler)
• ISB CM2150
• ISB CM550
• ISB CM850
• ISB/ISD4.5 CM2150 B119
• ISB/ISD6.7 CM2150 SN
• ISB5.9 CM2880 B110
• ISB6.7 CM2250
• ISB6.7 CM2350 B101
• ISB6.7 G CM2180 B118

The Rocker Lever Assembly part 4928698 fits various ISB engines, including the ISB (Chrysler), ISB CM2150, ISB CM550, ISB CM850, ISB/ISD4.5 CM2150 B119, ISB/ISD6.7 CM2150 SN, ISB5.9 CM2880 B110, ISB6.7 CM2250, ISB6.7 CM2350 B101, and ISB6.7 G CM2180 B118. This compatibility ensures that the assembly works effectively across different configurations and specifications within the ISB series.

ISBE Series Engines

• ISBE CM2150
• ISBE CM800
• ISBE4 CM850

The Rocker Lever Assembly part 4928698 is also compatible with the ISBE series, including the ISBE CM2150, ISBE CM800, and ISBE4 CM850. This ensures that the assembly can be used across various ISBE engine models, maintaining consistent performance and reliability.

QSB Series Engines

• QSB4.5 CM2250 EC
• QSB4.5 CM850 (CM2850)
• QSB5.9 44 CM550
• QSB5.9 CM2880 B115
• QSB5.9 CM850
• QSB6.7 CM2250

The Rocker Lever Assembly part 4928698 is designed to fit the QSB4.5 CM2250 EC, QSB4.5 CM850 (CM2850), QSB5.9 44 CM550, QSB5.9 CM2880 B115, QSB5.9 CM850, and QSB6.7 CM2250 engines. This compatibility ensures that the assembly can be used across different QSB engine models, providing reliable valve operation.

ISD Series Engines

• ISD4.5 CM2220 D108

The Rocker Lever Assembly part 4928698 is also compatible with the ISD4.5 CM2220 D108 engine, ensuring that the assembly can be used across different engine series within the Cummins lineup.

This comprehensive compatibility ensures that the Rocker Lever Assembly part 4928698 can be used across a wide range of Cummins engines, providing a reliable and efficient solution for maintaining and repairing these engines.

Integration of Part 4928698 Rocker Lever Assembly in Engine Systems

The Rocker Lever Assembly, part number 4928698, is a pivotal component in the operation of an engine’s valve train system. This assembly works in conjunction with several key components to ensure the efficient and precise operation of the engine.

Interaction with the Lever and Rocker

The Rocker Lever Assembly is designed to amplify the motion of the camshaft. It receives the rotational motion from the camshaft through the lever and converts it into a linear motion that operates the valves. This conversion is essential for the intake and exhaust processes, allowing air and fuel to enter the combustion chamber and exhaust gases to exit efficiently.

Role in the Long Block

In a long block engine configuration, which includes the cylinder block, crankshaft, pistons, and often the camshaft, the Rocker Lever Assembly plays a significant role. It is responsible for translating the camshaft’s motion into valve actuation. This ensures that the valves open and close at the correct times in the engine’s cycle, which is vital for maintaining engine performance and efficiency.

Function within the Long Block Kit

When considering a long block kit, which typically includes all the components of a long block plus additional parts like gaskets, seals, and sometimes the Rocker Lever Assembly itself, the integration of part 4928698 becomes even more relevant. The kit is designed for ease of installation and to provide a complete solution for engine rebuilding or replacement. The Rocker Lever Assembly in this context ensures that once the long block is assembled, the valve train will function correctly from the outset, reducing the likelihood of post-installation issues.

Conclusion

In summary, the Rocker Lever Assembly, part 4928698, is integral to the valve train’s operation in engine systems. Its precise interaction with levers, rockers, and its role within long block and long block kit configurations underscores its importance in ensuring the engine’s valves operate efficiently and in sync with the engine’s overall performance.