3967169
Crosshead Adjusting Screw
Cummins®

Introduction

The Cummins 3967169 Crosshead Adjusting Screw is a critical component in heavy-duty truck engines, designed to facilitate precise adjustments of the crosshead. This ensures optimal alignment and clearance, which is essential for maintaining engine efficiency and reliability ¹.

Function and Operation

This part allows for fine-tuned adjustments to the crosshead’s position within the engine. It maintains proper alignment and clearance between the crosshead and other engine components, contributing to smooth engine operation, reduced friction, and minimized wear ².

Key Features

The Crosshead Adjusting Screw is constructed from high-strength materials to endure heavy-duty engine operations. Its precision-engineered threading enables accurate adjustments, and it may include a locking mechanism to secure the adjustment. These features enhance the screw’s reliability and effectiveness in maintaining engine alignment ³.

Benefits

By enabling precise adjustments to the crosshead, the 3967169 enhances engine efficiency, reduces wear on engine parts, and extends the engine’s service life. Proper alignment facilitated by the adjusting screw can also contribute to smoother engine operation and potentially lower fuel consumption ⁴.

Installation and Maintenance

Proper installation of the Crosshead Adjusting Screw is essential for its effective operation. It should be installed according to the manufacturer’s guidelines. Regular maintenance, including periodic inspections and adjustments, is recommended to ensure optimal performance ⁵.

Troubleshooting

Common issues with the Crosshead Adjusting Screw may include improper alignment or wear. Diagnostic procedures can involve checking engine performance and inspecting the screw and surrounding components for signs of wear or misalignment. Solutions may include re-adjusting the screw, replacing worn components, or consulting the manufacturer’s guidelines for further troubleshooting steps ⁶.

Manufacturer - Cummins

Cummins Inc. is renowned for its high-quality components in the automotive and heavy-duty truck industry. The company’s commitment to quality is reflected in its range of engine components, including the 3967169, designed to meet the demanding requirements of heavy-duty applications ⁷.

Compatibility with Cummins Engines

The Crosshead Adjusting Screw, part number 3967169, is compatible with various Cummins engines, including the 4B3.9, 6B5.9, 6C8.3, and L8.9 models. It ensures precise adjustments and reliable performance across these engine types ⁸.

Role in Engine Systems

The Crosshead Adjusting Screw is integral to the efficient operation of engine, brake, and exhaust systems. It maintains the precise alignment of the crosshead, contributing to the smooth operation of the piston and connecting rod assembly, consistent brake performance, and efficient exhaust system operation ⁹.

Conclusion

The Cummins 3967169 Crosshead Adjusting Screw is a vital component for maintaining the efficiency, reliability, and performance of heavy-duty truck engines. Its precise adjustments ensure optimal alignment and clearance, contributing to the longevity and smooth operation of the engine and associated systems.