3948095
Cylinder Liner
Cummins®

The Cummins 3948095 Cylinder Liner is a component designed to enhance the operation of commercial truck engines. This part is integral to the engine’s functionality, contributing to its performance, durability, and efficiency. Cummins Inc., a well-established manufacturer in the industry, is renowned for producing high-quality truck components. Their reputation is built on a legacy of innovation and reliability, making them a trusted name in the commercial truck sector ¹.

Basic Concepts of Cylinder Liners

A cylinder liner, also known as a cylinder sleeve, is a component that forms the inner surface of an engine cylinder. Its primary function is to provide a durable and smooth surface for the piston to move against. The liner interacts closely with other engine components, including the piston rings, which seal the combustion chamber and help maintain compression. There are two main types of cylinder liners: wet liners, which come into direct contact with the engine’s coolant, and dry liners, which do not. Each type has specific applications depending on the engine design and requirements ².

Purpose of the 3948095 Cylinder Liner

The 3948095 Cylinder Liner plays a significant role in the operation of a truck engine. It is designed to withstand the high pressures and temperatures generated during combustion, ensuring the engine operates efficiently. By providing a robust and smooth surface, the liner contributes to the engine’s performance and longevity. It also aids in maintaining proper compression, which is vital for engine efficiency ³.

Key Features

The 3948095 Cylinder Liner boasts several key features that enhance its functionality. It is made from high-quality materials, ensuring durability and resistance to wear. The design includes precise tolerances to ensure a proper fit within the engine block. Additionally, the liner may have unique attributes such as honing patterns on its inner surface to improve piston ring seal and reduce friction ⁴.

Benefits

Using the 3948095 Cylinder Liner offers several benefits. It contributes to improved engine longevity by providing a durable surface that resists wear and corrosion. Enhanced performance is another advantage, as the liner helps maintain proper compression and reduces friction within the engine. Over time, the use of this liner can lead to potential cost savings due to its durability and the reduced need for frequent replacements ⁵.

Installation Process

Installing the 3948095 Cylinder Liner requires careful attention to detail. The process involves removing the old liner, cleaning the cylinder bore, and inserting the new liner. Special tools may be required to ensure the liner is seated correctly. It is important to follow the manufacturer’s guidelines to ensure a proper fit and function. Tips for a successful installation include checking for proper alignment and ensuring the liner is free from contaminants before installation ⁶.

Maintenance and Troubleshooting

Regular maintenance practices are vital to ensure the longevity and efficiency of the 3948095 Cylinder Liner. This includes monitoring the engine’s performance and addressing any signs of wear or damage promptly. Common issues that may arise include piston ring wear or liner bore scoring. Troubleshooting steps may involve inspecting the liner for damage, cleaning the cylinder bore, and replacing worn components as necessary ⁷.

Compatibility and Applications

The 3948095 Cylinder Liner is designed for specific types of engines and trucks. It is important to verify compatibility with the specific truck model to ensure optimal performance. This can be done by consulting the manufacturer’s guidelines or using compatibility charts provided by Cummins ⁸.

Cummins Overview

Cummins Inc. has a rich history in the commercial truck industry, known for its innovative and reliable truck components. The company offers a wide range of products, from engines and powertrains to filtration and emissions solutions. Cummins’ reputation is built on a commitment to quality and customer satisfaction, making them a trusted name for truck components ⁹.

Cummins Cylinder Liner 3948095 Compatibility

The Cummins Cylinder Liner part number 3948095 is designed to fit a variety of Cummins engines. This part is essential for maintaining the structural integrity and performance of the engine. Below is a detailed overview of the engines that this cylinder liner is compatible with, grouped by their respective engine families and configurations.

6C Series Engines

• 6C8.3
• C8.3 G
• G8.3
• G8.3 CM558
• GTA8.3 CM558
• QSC8.3 CM2880 C102
• QSC8.3 CM554
• QSC8.3 CM850 (CM2850)

These engines are part of the 6C series, which are known for their robust design and high performance. The 3948095 cylinder liner is engineered to fit seamlessly within these engines, ensuring optimal performance and longevity.

L Series Engines

• L8.9
• L8.9 L121
• L8.9G CMOH2.0 L125B
• L9 CM2670 L128B
• QSL8.9 CM2150 L141

The L series engines are another critical lineup in Cummins’ portfolio, recognized for their versatility and efficiency. The 3948095 cylinder liner is designed to integrate perfectly with these engines, providing the necessary durability and efficiency.

ISC Series Engines

• ISC CM2150
• ISC CM554
• ISC CM850
• ISC8.3 CM2250

The ISC series engines are widely used in various applications due to their reliability and performance. The 3948095 cylinder liner is specifically designed to fit these engines, ensuring smooth operation and extended engine life.

ISL Series Engines

• ISL CM2150
• ISL CM554
• ISL G CM2180
• ISL9 CM2150 SN
• ISL9 CM2250

The ISL series engines are known for their high power output and efficiency. The 3948095 cylinder liner is compatible with these engines, providing the necessary support and protection for the engine’s internal components.

Gas Plus Series Engines

• C GAS PLUS CM556
• L GAS PLUS CM556

The Gas Plus series engines are designed for applications requiring cleaner emissions. The 3948095 cylinder liner is compatible with these engines, ensuring they meet stringent emission standards while maintaining performance.

QSC and QSL Series Engines

• QSC9 CM2250/QSL9 CM2250

The QSC and QSL series engines are part of Cummins’ lineup of high-performance engines. The 3948095 cylinder liner is engineered to fit these engines, providing the necessary durability and performance for demanding applications.

This detailed compatibility overview ensures that users can confidently select the 3948095 cylinder liner for their specific engine needs, knowing it is designed to fit and perform optimally within the specified engine families.

Integration of Part 3948095 Cylinder Liner in Engine Systems

The Cylinder Liner (part 3948095) is an essential component that interfaces with several key elements within an engine system, ensuring optimal performance and durability.

When installed within the Cylinder Block or Engine Block, the cylinder liner provides a smooth surface for the Engine Piston Kit or PMM Piston Upgrade to move against. This interaction is vital for minimizing friction and wear, which in turn enhances the efficiency and longevity of the engine.

In the context of an Overhaul Kit or Rebuild Kit, the cylinder liner plays a significant role. It is often included in these kits to replace worn-out liners, ensuring that the engine maintains its compression and performance standards post-overhaul.

The cylinder liner also works in conjunction with the Crankshaft and Bearings or Crankshaft and Main Bearings. As the piston moves up and down, driven by the crankshaft, the liner must withstand high pressures and temperatures. Its proper fit and condition are therefore important for the smooth operation of the crankshaft and the stability of the bearings.

For engines that come as a Short Block or Long Block, the cylinder liner is pre-installed, providing a ready-to-use component that integrates seamlessly with the block and other internal components. This pre-installation saves time during the assembly process and ensures that the liner is correctly positioned and secured.

In summary, the cylinder liner (part 3948095) is a component that ensures the smooth operation of the piston within the engine block, interacts with the crankshaft and bearings for stable engine function, and is a key part of overhaul and rebuild kits for maintaining engine performance.

Conclusion

The Cummins 3948095 Cylinder Liner is a critical component in the operation of commercial truck engines, contributing to their performance, durability, and efficiency. Its key features, benefits, and proper installation and maintenance practices ensure that it plays a vital role in the engine’s functionality. By understanding the compatibility and applications of this part, users can ensure optimal performance and longevity for their engines.