3936895
Rear Cover
Cummins®

The Rear Cover 3936895, a component manufactured by Cummins, is designed for use in heavy-duty commercial trucks. This article provides an in-depth look at the function, features, and maintenance of this part, aimed at engineers, mechanics, truck drivers, and fleet operators.

Basic Concepts of Rear Covers

A rear cover is a protective housing that encloses the rear section of an engine. It serves to shield internal components from external contaminants, maintain engine integrity, and contribute to the overall efficiency and longevity of the engine ¹.

Function and Role of the Rear Cover 3936895

This Cummins part plays a role in protecting the rear components of Cummins engines. It helps in containing engine oil, reducing noise, and providing a mounting surface for various engine accessories. Additionally, it contributes to the structural stability of the engine ².

Key Features

• Constructed from durable materials to withstand high temperatures and pressures.
• Designed to provide a secure seal to prevent oil leaks.
• Includes mounting points for engine accessories such as the turbocharger and exhaust manifold.
• Engineered to reduce engine noise and vibration.

Benefits

• Enhanced engine protection against debris and environmental factors.
• Improved engine performance through effective sealing and reduced oil leaks.
• Increased durability and longevity of the engine due to robust construction.
• Reduction in engine noise and vibration, contributing to a smoother operation.

Troubleshooting and Maintenance

Regular inspection of the Rear Cover is recommended to identify any signs of wear, cracks, or oil leaks. Maintenance procedures may include:

• Checking for oil leaks around the rear cover gasket and addressing any issues promptly.
• Inspecting the rear cover for cracks or damage, and replacing if necessary.
• Ensuring all mounting points are secure and free from corrosion.
• Following manufacturer guidelines for periodic replacement or repair to maintain engine efficiency ³.

About Cummins

Cummins Inc. is a global power leader that designs, manufactures, and distributes engines, filtration, and power generation products. Known for their commitment to quality and innovation, Cummins provides reliable and efficient solutions for a wide range of industries, including transportation, construction, and power generation.

Compatibility with Cummins Engines

This part is designed to fit a variety of Cummins engine models. Below is a detailed list of the engines that are compatible with this rear cover:

4B Series Engines

• 4B3.9

6B Series Engines

• 6B5.9

6C Series Engines

• 6C8.3

B Series Engines

• B3.9 G
• B4.5
• B5.9 G
• B5.9 GAS PLUS CM556

G Series Engines

• G5.9
• G5.9 CM558

ISB Series Engines

• ISB CM550
• ISB CM850
• ISB5.9G CM2180

QSB Series Engines

• QSB3.9 30 CM550
• QSB5.9 30 CM550
• QSB5.9 44 CM550
• QSB5.9 CM2880 B115

This rear cover is engineered to provide a secure and reliable fit for the specified engines, ensuring that the engine’s rear section is properly sealed and protected.

Role of Part 3936895 Rear Cover in Engine Systems

The Rear Cover is an integral component in the assembly and operation of various engine systems. It is specifically designed to interface with the flywheel housing and the short block, ensuring the seamless integration and functionality of these components.

Integration with Flywheel Housing

The Rear Cover is meticulously engineered to align with the flywheel housing. This alignment is essential for maintaining the structural integrity of the engine. The Rear Cover provides a secure mounting surface for the flywheel, which is a pivotal component in the transmission of power from the engine to the drivetrain. It also plays a role in sealing the rear of the engine, preventing oil leaks and ensuring that lubricants remain within the engine compartment.

Connection to Short Block

When integrated with the short block, the Rear Cover serves as a protective enclosure. The short block, which consists of the cylinder block, crankshaft, pistons, and other essential components, relies on the Rear Cover to shield these parts from external contaminants. Additionally, the Rear Cover aids in the management of engine vibrations by providing a stable rearward boundary for the engine’s moving parts.

Functional Synergy

The synergy between the Rear Cover, flywheel housing, and short block is paramount for the efficient operation of the engine. The Rear Cover not only facilitates the mechanical connection between these components but also contributes to the overall durability and performance of the engine system. Its design considerations include precise tolerances and material selections to withstand the operational stresses and temperatures encountered in engine environments.

Conclusion

The Rear Cover 3936895 is a critical component in the maintenance and operation of Cummins engines. Its robust construction, precise engineering, and compatibility with a wide range of engine models make it an essential part for ensuring engine efficiency, durability, and performance. Regular maintenance and inspection of this part are vital for the longevity and optimal functioning of the engine.