3387070-R
BIG CAM ASSY & DISASSY
Cummins®

The Cummins 3387070-R Big Cam Assembly & Disassembly (BIG CAM ASSY & DISASSY) is a component designed for use in heavy-duty truck engines. It plays a role in the operation of these engines by controlling the timing of the valve train system and the fuel injection process. Understanding its assembly and disassembly is important for maintaining and upgrading heavy-duty truck engines.

Function and Operation

BIG CAM ASSY & DISASSY operates within the engine by controlling the opening and closing of the engine’s valves. This is achieved through a series of lobes and followers that interact with the valve train system. The camshaft’s design ensures precise timing of the fuel injection, which is important for the engine’s performance and efficiency. The camshaft’s rotation is synchronized with the engine’s crankshaft, allowing for optimal engine operation ¹.

Key Features

This Cummins part is constructed from high-quality materials, ensuring durability and reliability under the demanding conditions of heavy-duty truck operation. Its design includes specific lobes and followers tailored to the engine’s requirements, enhancing its performance. The assembly is engineered to withstand high stress and temperatures, contributing to its longevity and efficiency ².

Benefits

The use of the 3387070-R Big Cam Assembly in heavy-duty trucks offers several advantages. It contributes to improved engine efficiency by ensuring precise valve timing. This can lead to enhanced reliability and potentially increased power output. The assembly’s design also aids in reducing engine wear, prolonging the engine’s service life ¹.

Installation Process

Installing this part requires careful attention to detail. The process involves preparing the engine compartment, aligning the camshaft with the crankshaft, and securing it in place. Proper tools and alignment procedures are necessary to ensure the assembly functions correctly and contributes to the engine’s optimal performance ¹.

Maintenance and Troubleshooting

Regular maintenance of the 3387070-R is important for its longevity. This includes checking for wear on the lobes and followers, ensuring proper lubrication, and inspecting the valve train system for any signs of damage. Troubleshooting common issues, such as irregular engine performance or noise, may involve inspecting the camshaft’s alignment and condition ¹.

Common Upgrades and Modifications

There are several upgrades and modifications that can be made to the 3387070-R to enhance its performance. These may include changing the camshaft profile for different engine characteristics or installing higher-quality materials for increased durability. Compatibility with other engine components should be considered when making these modifications ¹.

Historical Context and Evolution

The evolution of camshaft technology in heavy-duty trucks has seen significant advancements, with the 3387070-R representing a notable development. Cummins has continually improved camshaft designs to meet the increasing demands for engine performance and efficiency in heavy-duty applications ².

Cummins Corporation

Cummins Inc. is a leading manufacturer in the automotive and heavy-duty truck industry, known for its wide range of engine and component products. The company’s history is marked by innovation and a commitment to quality, making it a trusted name in the industry ².

Conclusion

Understanding the 3387070-R Big Cam Assembly & Disassembly is essential for anyone involved in the maintenance and upgrade of heavy-duty truck engines. Its role in controlling valve timing and fuel injection, coupled with its durable construction and the potential for performance enhancements, makes it a critical component in the operation of these engines. Regular maintenance and careful installation are key to ensuring its optimal performance and longevity.