3968355
Access Hole Cover
Cummins®

Introduction

The Cummins 3968355 Access Hole Cover is a component designed for use in commercial trucks. It serves to protect access points on the engine, facilitating easier maintenance and operation. This cover is integral to the upkeep and functionality of commercial trucks, ensuring that critical areas remain safeguarded against contaminants and damage ¹.

Purpose and Function

The Cummins 3968355 Access Hole Cover provides a secure seal over access points, helping to prevent debris, dirt, and moisture from entering sensitive areas of the engine. By maintaining a clean and dry environment, the cover contributes to the overall efficiency and safety of the vehicle. It also allows for easier access during maintenance, enabling technicians to quickly and effectively perform necessary checks and repairs ².

Key Features

This Cummins part is constructed from durable materials, ensuring it can withstand the rigors of commercial truck operation. Its design includes precise fitting to ensure a secure seal, minimizing the risk of leaks or contaminants entering the engine compartment. The cover is also easy to remove and reinstall, facilitating convenient access for maintenance tasks.

Benefits

The Cummins 3968355 Access Hole Cover offers several benefits. It enhances the protection of underlying components by preventing the ingress of contaminants, which can lead to wear and corrosion. Improved access for maintenance tasks reduces downtime and enhances the efficiency of service operations. Additionally, the cover contributes to the longevity of the engine by maintaining a clean and dry environment, which is crucial for optimal performance ³.

Installation Process

Installing the Cummins 3968355 Access Hole Cover involves several steps to ensure a secure fit. First, the area around the access hole should be cleaned to remove any dirt or debris. The cover should then be aligned with the access hole and pressed into place until it snaps securely. It is important to ensure that the cover is properly seated to maintain an effective seal. Tools such as a soft mallet may be used to assist in seating the cover if necessary.

Maintenance and Care

Regular maintenance of the Cummins 3968355 Access Hole Cover is important to ensure its continued effectiveness. This includes periodic cleaning to remove any accumulated dirt or debris. Inspections should be conducted to check for signs of wear or damage, and the cover should be replaced if any issues are detected. Proper care will help maintain the integrity of the seal and the protection it provides.

Troubleshooting Common Issues

Common issues with the Cummins 3968355 Access Hole Cover may include leaks or damage to the cover itself. If a leak is detected, the cover should be inspected for proper seating and any signs of wear. If damage is found, the cover should be replaced to restore the seal and protect the engine. Regular inspections and maintenance can help identify and address these issues before they lead to more significant problems.

Cummins Overview

Cummins Inc. is a global power leader that designs, manufactures, and distributes a wide range of power solutions. With a history spanning over a century, Cummins is committed to innovation and quality, providing reliable and efficient products for the commercial truck industry. Their product range includes engines, filtration systems, and aftermarket parts, all designed to meet the demanding needs of commercial applications.

Access Hole Cover Part 3968355 Compatibility with Cummins Engines

The Access Hole Cover part number 3968355, manufactured by Cummins, is designed to fit a variety of Cummins engines. This cover is crucial for providing access to specific engine components, ensuring maintenance and repair can be performed efficiently. Below is a detailed list of the engines with which this part is compatible:

Cummins 4B Series

• 4B3.9

Cummins 6B Series

• 6B5.9

Cummins 6C Series

• 6C8.3

Cummins B Series

• B4.5
• B5.9 G
• B5.9 GAS PLUS CM556

Cummins C Series

• C GAS PLUS CM556

Cummins C8 Series

• C8.3 G

Cummins G Series

• G5.9
• G5.9 CM558
• G8.3

Cummins ISB Series

• ISB5.9G CM2180

Cummins QSB Series

• QSB3.9 30 CM550
• QSB5.9 30 CM550

This cover is engineered to ensure a snug fit and proper sealing, which is essential for maintaining engine integrity and performance. It is compatible across a range of Cummins engine models, providing a versatile solution for various applications.

Role of Part 3968355 Access Hole Cover in Engine Systems

The part 3968355 Access Hole Cover is integral to the functionality and maintenance of various engine systems. It provides a secure and sealed access point for several key components, ensuring both operational efficiency and ease of service.

Cylinder Block

In the cylinder block, the Access Hole Cover allows technicians to access internal components without disassembling the entire block. This is particularly useful for inspections, maintenance, and repairs, enabling quick and efficient service.

Drive and Tachometer

For the drive system and tachometer, the Access Hole Cover facilitates the monitoring and adjustment of performance metrics. It provides a point of entry for diagnostic tools, allowing for real-time data collection and analysis without compromising the integrity of the engine’s seals.

Long Block and Short Block

In both long block and short block configurations, the Access Hole Cover plays a significant role. It enables access to critical internal components such as bearings, pistons, and crankshafts. This is essential for routine maintenance, performance tuning, and troubleshooting.

Short Block 6Cart and Short Block Kit

For the Short Block 6Cart and Short Block Kit, the Access Hole Cover is designed to accommodate the specific requirements of these assemblies. It allows for the inspection and replacement of components within the short block, ensuring that the engine can be serviced efficiently and effectively.

Cover Gear Kit

In the Cover Gear Kit, the Access Hole Cover provides a sealed environment for the gears and related components. It allows for periodic checks and lubrication, ensuring that the gear kit operates smoothly and reliably.

Hand Hole

The hand hole, often covered by the Access Hole Cover, is a critical access point for manual adjustments and inspections. It allows technicians to reach into the engine without removing major components, streamlining the maintenance process.

Conclusion

Overall, the part 3968355 Access Hole Cover is a versatile and essential component in various engine systems, facilitating easier maintenance, more efficient operations, and enhanced diagnostic capabilities.