3990732
Access Hole Cover
Cummins®

Introduction

The Access Hole Cover Plate 3990732 is a component designed for use in commercial trucks, specifically engineered by Cummins. This cover plate serves to protect internal components and maintain the integrity of the truck’s systems. It is an integral part of the vehicle’s design, ensuring that sensitive areas remain shielded from external elements and debris ¹.

Purpose and Functionality

The primary role of the Access Hole Cover Plate 3990732 is to safeguard internal components from damage and contamination. By covering access holes, it prevents the ingress of debris, dirt, and moisture, which could otherwise lead to system malfunctions or accelerated wear. Additionally, it helps in maintaining the structural integrity of the truck’s systems by providing a secure barrier against external elements ³.

Key Features

The Access Hole Cover Plate 3990732 is characterized by several key features that enhance its functionality and durability. It is constructed from high-quality materials, ensuring it can withstand the rigors of commercial truck operations. The cover plate is designed for a precise fit, which ensures it aligns correctly with the truck’s access holes, providing effective coverage. Furthermore, its design facilitates ease of installation, allowing for quick and straightforward application by technicians ².

Benefits

Incorporating the Access Hole Cover Plate 3990732 into a truck’s design offers several benefits. It enhances the protection of internal components, reducing the risk of damage and extending the lifespan of the truck’s systems. Improved safety is another advantage, as the cover plate helps prevent accidents caused by exposed components. Additionally, the use of this cover plate can lead to reduced maintenance requirements, as it minimizes the need for repairs related to debris ingress and component exposure ¹.

Installation Process

Proper installation of the Access Hole Cover Plate 3990732 is crucial for its effective functioning. The process involves several steps: first, ensuring the access hole is clean and free of debris; second, aligning the cover plate correctly with the access hole; and third, securing it in place using the appropriate fasteners. It is important to follow the manufacturer’s guidelines to ensure a proper fit and function ².

Maintenance Tips

To ensure the optimal performance and longevity of the Access Hole Cover Plate 3990732, regular maintenance is recommended. This includes periodic inspections to check for any signs of damage or wear. Cleaning the cover plate and its surrounding area can prevent the accumulation of dirt and debris, which could affect its functionality. If any damage is detected, it is advisable to replace the cover plate to maintain the protection of internal components ¹.

Troubleshooting Common Issues

Common issues with the Access Hole Cover Plate 3990732 may include damage due to impacts or misalignment after installation. In such cases, inspecting the cover plate for any visible signs of damage is the first step. If misalignment is detected, realigning and securing the cover plate correctly can resolve the issue. For damaged cover plates, replacement is recommended to restore the protection of internal components ³.

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 in the commercial truck industry for producing reliable and high-performance components. The company’s product offerings include a wide range of engines and parts designed to meet the demanding requirements of commercial vehicles ².

Compatibility with Cummins Engines

The Access Hole Cover Plate (part 3990732) is specifically designed to fit the following Cummins engine models:

• 6B5.9: This engine model benefits from the precise fit and robust construction of the cover plate, allowing for efficient access to critical areas during maintenance procedures.

The design of the cover plate ensures that it aligns perfectly with the engine’s contours, providing a secure and reliable seal. This is crucial for maintaining the engine’s operational efficiency and longevity. The material used in the cover plate is selected for its durability and resistance to the harsh conditions within the engine compartment, ensuring that it can withstand the rigors of regular use ².

Installation and Maintenance

When installing the Access Hole Cover Plate, it is essential to follow the manufacturer’s guidelines to ensure a proper fit and seal. This involves aligning the cover plate with the designated access holes and securing it with the appropriate fasteners. Regular inspection of the cover plate is also recommended to ensure that it remains in good condition and continues to provide the necessary access points for maintenance ².

Role of Part 3990732 Access Hole Cover Plate in Engine Systems

The Access Hole Cover Plate, identified by part number 3990732, is an essential component in the assembly and maintenance of various engine systems. It is strategically positioned to seal access holes, ensuring the integrity and efficiency of the engine’s operation.

In the context of an arrangement involving multiple engine components, the Access Hole Cover Plate serves to protect and conceal critical areas that may be exposed during maintenance or assembly processes. This not only prevents contaminants from entering the engine but also safeguards internal components from potential damage ³.

When integrated with the cam follower cover, the Access Hole Cover Plate works in tandem to maintain a sealed environment around the camshaft and its associated components. This is particularly important in high-performance engines where precision and cleanliness are paramount ³.

The cover itself, often part of a larger assembly, relies on the Access Hole Cover Plate to ensure that any openings are properly sealed. This is vital for maintaining the engine’s pressure integrity and preventing oil leaks, which could lead to decreased performance and increased wear on moving parts ³.

In conjunction with the cam follower, the Access Hole Cover Plate ensures that the pathways and access points are secure. This is important for the smooth operation of the cam follower, which relies on a clean and unobstructed environment to function effectively ³.

Lastly, in the context of a short block kit, the Access Hole Cover Plate is often included to ensure that all necessary components are present for a complete and secure assembly. This is particularly relevant during the rebuilding or repair of an engine, where every component must be accounted for to ensure optimal performance and longevity ³.

Conclusion

The Access Hole Cover Plate 3990732 plays a significant role in maintaining the structural and operational integrity of engine systems. By providing a secure seal for access holes, it ensures that internal components remain protected from contaminants and potential damage. Proper installation and regular maintenance of this Cummins part are essential for ensuring the longevity and efficiency of the engine. Cummins’ commitment to producing high-quality, reliable components is evident in the design and functionality of the Access Hole Cover Plate 3990732.