2868940
Gear Retainer
Cummins®

Introduction

The Gear Retaining Clip 2868940, manufactured by Cummins, is designed for heavy-duty truck operations. This part secures gears within the transmission system, ensuring they remain in place during operation. Its role is crucial in maintaining the integrity and efficiency of the truck’s gear assembly, contributing to the overall performance and reliability of the vehicle ¹.

Purpose and Function

The Gear Retaining Clip 2868940 holds gears in position within the transmission system. By securing the gears, it maintains proper alignment and spacing, which is vital for the smooth operation of the transmission. This ensures that gears do not shift out of place, which could lead to increased wear, noise, and potential damage to other components ².

Key Features

This Cummins part is constructed from durable materials, typically a high-strength alloy, providing resistance to wear and corrosion. Its design is engineered to fit precisely within the gear assembly, ensuring a secure hold without excessive force. Additionally, the clip may feature specific contours or notches that enhance its grip on the gears, further ensuring stability during operation ³.

Benefits

The use of the Gear Retaining Clip 2868940 offers several advantages. It contributes to improved gear stability, which reduces the likelihood of gear misalignment and associated wear and tear. This, in turn, enhances the overall performance and longevity of the truck’s transmission system. Furthermore, by maintaining proper gear alignment, the clip helps to ensure smooth shifting and consistent power delivery.

Installation Process

Installing the Gear Retaining Clip 2868940 requires careful attention to detail. Begin by ensuring the gear assembly is clean and free of debris. Position the clip around the gear, making sure it is aligned correctly with the gear’s contours. Apply gentle pressure to secure the clip in place, ensuring it is snug but not overly tight, which could cause damage. Verify the installation by checking for proper alignment and secure fit.

Maintenance and Troubleshooting

Regular maintenance of the Gear Retaining Clip 2868940 is important to ensure its continued effectiveness. Inspect the clip during routine transmission checks for signs of wear, corrosion, or damage. If any issues are detected, the clip should be replaced to prevent potential failure. Additionally, ensure that the gear assembly is clean and free of contaminants, as these can accelerate wear on the clip and gears.

Common Failures and Solutions

Typical failure modes for Gear Retaining Clips include wear, corrosion, and physical damage. Wear can occur over time due to the constant motion and friction within the gear assembly. Corrosion may develop in environments where the clip is exposed to moisture or chemicals. Physical damage can result from improper installation or external impacts. To address these issues, regular inspections and timely replacements are recommended. Additionally, using clips made from corrosion-resistant materials can help mitigate the risk of corrosion.

Impact on Truck Performance

The Gear Retaining Clip 2868940 plays a role in influencing the overall performance and efficiency of the truck. By ensuring proper gear alignment and stability, it contributes to smooth transmission operation, which can enhance fuel economy and reliability. Consistent and reliable gear engagement also reduces the risk of unexpected downtime, thereby improving the truck’s operational efficiency.

Cummins Overview

Cummins Inc. is a global power leader that designs, manufactures, and distributes engines, filtration, and power generation products. With a history spanning over a century, Cummins has established a strong reputation for quality and innovation in the automotive industry, particularly in the manufacturing of components for heavy-duty trucks. The company’s commitment to excellence is reflected in its diverse product range, which includes engines, powertrain components, and aftermarket parts designed to meet the demanding requirements of heavy-duty applications.

Gear Retaining Clip (Part 2868940) Compatibility with Cummins Engines

The Gear Retaining Clip, identified by the part number 2868940, is a critical component in several Cummins engine models. This part is designed to ensure the proper alignment and retention of gears within the engine, contributing to the overall efficiency and reliability of the engine’s operation.

ISM Series Engines

The ISM series engines, including the ISM CM570, ISM CM570/870, ISM CM876, and ISM11 CM876 SN, are equipped with the Gear Retaining Clip 2868940. This part is integral to maintaining the integrity of the gear system in these engines, ensuring smooth and reliable performance.

M11 Series Engines

The M11 series engines, which include the M11 CELECT, M11 CELECT PLUS, and M11 MECHANICAL, also utilize the Gear Retaining Clip 2868940. This component is essential for these engines, providing the necessary support and alignment for the gears, which is crucial for the engine’s operational efficiency.

QSM11 Series Engines

The QSM11 series engines, specifically the QSM11 CM570 and QSM11 CM876, are designed to work with the Gear Retaining Clip 2868940. This part ensures that the gears within these engines remain securely in place, contributing to the overall durability and performance of the engine.

By ensuring that the gears are properly retained and aligned, the Gear Retaining Clip 2868940 plays a vital role in the functionality and longevity of these Cummins engines.

Conclusion

The Gear Retaining Clip 2868940 is a fundamental component in the assembly and maintenance of various engine systems. Its primary function is to secure the gear in place, ensuring that it remains correctly positioned within the engine’s mechanical framework. This is particularly important in the context of the engine block and cylinder components. Within the engine block, this Cummins part plays a significant role in maintaining the integrity of the gear system. The engine block houses numerous components, including the cylinder bores where the pistons move. The gears within this system are responsible for transmitting power from the crankshaft to other parts of the engine, such as the camshaft. The Gear Retaining Clip ensures that these gears are held firmly in place, preventing any misalignment that could lead to inefficient power transmission or even mechanical failure. In the cylinder assembly, the Gear Retaining Clip is equally important. The cylinders are where the combustion process occurs, and the precise movement of the pistons is essential for engine performance. The gears connected to the pistons must be securely held in place to ensure smooth and consistent operation. The Gear Retaining Clip facilitates this by providing a stable mounting point for the gears, allowing them to function without undue stress or movement. Overall, the Gear Retaining Clip is a fundamental component in ensuring the reliable operation of the engine’s gear system, contributing to the overall efficiency and durability of the engine.