172477
Shim
Cummins®

The Cummins Part #172477 Shim is a critical component in the maintenance and operation of heavy-duty trucks, particularly those equipped with Cummins engines. This part is designed to provide precise adjustments within mechanical systems, ensuring optimal performance and longevity of the vehicle.

Basic Concepts of Shims

Shims are thin, often metallic, pieces used in mechanical systems to fill gaps, provide precise adjustments, and ensure proper clearances between components. They are essential for fine-tuning the fit and function of parts, enhancing the overall performance and durability of mechanical assemblies ¹.

Purpose of the 172477 Shim

The Cummins Part #172477 Shim is utilized in trucks to maintain correct clearances and alignments within Cummins engines and associated mechanical systems. It ensures that components are properly spaced and aligned, contributing to the smooth functioning and durability of the engine ².

Key Features

This Cummins part is characterized by its material strength and flexibility, calibrated thickness for precise adjustments, and unique design elements aimed at improving functionality and integration within the engine system ³.

Benefits of Using the 172477 Shim

Incorporating this part into a truck’s mechanical system offers advantages such as improved engine performance, reduced wear on components, enhanced reliability, and easier maintenance and repairs through fine-tuning of clearances ⁴.

Installation and Usage

Proper installation of the 172477 Shim is crucial for its effective function. It should be correctly positioned between components, with specific tools and procedures required to achieve the desired fit and clearance ⁵.

Troubleshooting Common Issues

Common issues with the 172477 Shim include improper fit, damage, or failure to achieve desired clearance. These can be identified through inspection and resolved by adjusting the shim’s position, replacing it if damaged, or re-evaluating clearances ⁶.

Maintenance Recommendations

Regular maintenance of the 172477 Shim involves periodic inspection for wear or damage, aligned with the truck’s maintenance schedule. Replacement may be necessary if significant wear or damage is detected, or if clearances no longer meet required specifications ⁷.

Cummins Overview

Cummins Inc. is renowned in the heavy-duty truck industry for its reliable engines and components. The company’s commitment to innovation and excellence is evident in products like the 172477 Shim, which contributes to the efficient and reliable operation of heavy-duty trucks ⁸.

Role of the 172477 Shim in Engine Systems

The 172477 Shim is integral to the proper functioning of various engine components. Its primary role is to ensure precise alignment and spacing, which is essential for optimal performance and longevity of the engine.

Engine Mounting

In engine mounting, the 172477 Shim maintains the correct distance between the engine block and mounting brackets, ensuring secure and even support, minimizing vibrations, and reducing stress on both the engine and mounting structure.

Turbocharger Integration

For turbochargers, the 172477 Shim aligns the turbocharger housing with the engine’s exhaust manifold, preventing leaks and ensuring efficient airflow, which directly impacts turbocharger performance and engine efficiency.

Fuel Injection System

In fuel injection systems, the 172477 Shim aligns fuel injectors with engine cylinders, ensuring precise fuel delivery, enhancing combustion efficiency, and reducing emissions.

Exhaust System

For the exhaust system, the 172477 Shim aligns the exhaust manifold with the downpipe, maintaining a sealed connection, preventing exhaust leaks, and facilitating smooth exhaust flow.

Cooling System

In cooling systems, the 172477 Shim aligns the water pump with the engine block, ensuring effective coolant circulation and maintaining optimal operating temperatures.

Transmission Mounting

For transmission mounting, the 172477 Shim aligns the transmission with the engine, ensuring smooth gear shifts and durability of the drivetrain.

Accessory Drive System

In accessory drive systems, the 172477 Shim aligns belts and pulleys with the engine’s crankshaft and other driven components, ensuring belts run true, reducing wear, and maintaining efficiency and reliability.

Conclusion

The Cummins Part #172477 Shim plays a vital role in the maintenance and operation of heavy-duty trucks. By ensuring precise alignment and spacing in various engine components, it contributes to the overall efficiency, reliability, and performance of the engine system.