4982773
Valve Cover
Cummins®

The Cummins 4982773 Valve Cover is a critical component in heavy-duty truck engines, designed to seal the valve train components and protect them from external contaminants. Understanding its purpose and functionality is essential for maintaining engine efficiency and performance.

Basic Concepts of Valve Covers

A valve cover is an integral part of the engine system that encloses the valve train components, including the camshaft, rocker arms, and valves. Its primary functions are to seal these components, preventing oil leaks and keeping out dirt and debris, thereby maintaining the integrity and performance of the engine’s valve train ¹.

Purpose of the Cummins 4982773 Valve Cover

This Cummins part is specifically designed to seal the valve train components, ensuring the engine operates in a clean and lubricated environment. This seal is vital for maintaining engine efficiency and performance, contributing to the overall durability and reliability of the engine ².

Key Features

The 4982773 Valve Cover is constructed with durability and functionality in mind. It is made from high-quality materials resistant to wear and corrosion. The design includes precise gasket seating surfaces and robust mounting points, enhancing its sealing capabilities and ensuring a secure fit on the engine. Additionally, the cover may incorporate ventilation features to manage pressure within the valve train compartment ³.

Benefits

Using this part offers several benefits. It provides enhanced engine protection by effectively sealing the valve train components from contaminants. The durable construction contributes to the cover’s longevity, reducing the need for frequent replacements. Furthermore, by maintaining a clean and sealed environment for the valve train, the cover can contribute to improved engine performance and efficiency.

Installation Process

Installing the 4982773 Valve Cover involves several steps to ensure a proper fit and seal. The process begins with preparing the engine surface by cleaning it thoroughly to remove any old gasket material or debris. Next, the new gasket is placed on the engine, followed by positioning the valve cover over the gasket. It is then secured in place using the appropriate fasteners, ensuring they are tightened to the manufacturer’s specified torque settings to achieve a proper seal without over-tightening, which could damage the gasket or the cover itself.

Maintenance and Care

Regular maintenance and care of the 4982773 Valve Cover are important for ensuring its longevity and optimal performance. This includes periodic inspections for signs of wear, damage, or leaks. Cleaning the cover and its gasket seating area during routine engine maintenance can prevent the buildup of dirt and debris that could compromise the seal. If any issues are detected, such as a damaged gasket or cover, it is advisable to replace the affected components to maintain the engine’s integrity.

Troubleshooting Common Issues

Common issues with valve covers, such as leaks or damage, can often be identified through visual inspection or by observing symptoms such as oil leaks around the valve cover area or a drop in engine performance. Troubleshooting may involve checking the condition of the gasket and the valve cover itself. If a leak is detected, replacing the gasket or, in some cases, the valve cover, may be necessary. For more complex issues, professional repair or replacement by a qualified technician is recommended.

Cummins Overview

Cummins Inc. is a well-established manufacturer in the diesel engine and component industry, known for its commitment to quality and innovation. With a history of producing reliable and high-performance engines and parts, Cummins has built a reputation for excellence in the automotive sector. The company’s focus on research and development ensures that its products, including the 4982773 Valve Cover, meet the demanding requirements of heavy-duty applications.

Valve Cover 4982773 Compatibility with Cummins Engines

The Cummins Valve Cover part number 4982773 is designed to fit a variety of Cummins engines, ensuring a secure seal and efficient operation. Here’s a detailed look at the compatibility of this valve cover with different Cummins engine models:

B6.7 Series Engines

• B6.7 CM2670 B153B
• ISB/ISD6.7 CM2150 SN
• ISB6.7 CM2250
• ISB6.7 CM2350 B101

The 4982773 valve cover is specifically engineered to fit the B6.7 series engines, which include the B6.7 CM2670 B153B, ISB/ISD6.7 CM2150 SN, ISB6.7 CM2250, and ISB6.7 CM2350 B101. This compatibility ensures that the valve cover will properly align with the engine’s design, providing effective sealing and maintaining the integrity of the engine’s internal components.

ISBE Series Engines

• ISBE CM2150
• ISBE4 CM850

The 4982773 valve cover is also compatible with the ISBE series engines, including the ISBE CM2150 and ISBE4 CM850. This compatibility is crucial for maintaining the engine’s performance and preventing oil leaks, which can lead to engine damage if not properly addressed.

QSB Series Engines

• QSB6.7 CM850 (CM2850)
• QSB7 CM2880 B117

Lastly, the 4982773 valve cover fits the QSB6.7 CM850 (CM2850) and QSB7 CM2880 B117 engines. This compatibility ensures that the valve cover will provide a reliable seal, protecting the engine from oil leaks and ensuring optimal performance.

Conclusion

The 4982773 Valve Cover is an essential component in the arrangement of an engine’s valve system. It serves as a protective cover for the valve train, which includes the camshaft, rocker arms, and valves. This part is designed to seal the top of the engine, preventing oil leaks and contaminants from entering the valve compartment.

The Valve Cover is bolted onto the cylinder head, ensuring a tight seal around the perimeter. It allows access to the valve train for maintenance and adjustments while protecting the internal components from dirt, debris, and moisture. The cover also facilitates the routing of hoses and wires that connect to the valve train components.

In addition to its protective function, the Valve Cover often incorporates features such as breather ports and passages for positive crankcase ventilation (PCV) systems. These features help manage pressure within the crankcase, ensuring optimal engine performance and longevity. The cover may also house components like the camshaft position sensor, which is vital for engine timing and performance monitoring.

Overall, the 4982773 Valve Cover plays a significant role in maintaining the integrity and efficiency of the engine’s valve system, contributing to the smooth operation and reliability of the engine.