3011342
Captive Washer Cap Screw
Cummins®

The Captive Washer Cap Screw Assembly 3011342, manufactured by Cummins, is a specialized component designed for use in commercial trucks. Cummins, a well-established name in the commercial truck industry, produces a range of parts and systems aimed at enhancing the performance, reliability, and efficiency of heavy-duty vehicles. This Cummins part is integral to the structural and functional integrity of commercial trucks.

Basic Concepts of Captive Washer Cap Screw Assembly

A Captive Washer Cap Screw Assembly is a type of fastener that includes a cap screw and a washer that is permanently attached to the screw. This design ensures that the washer remains in place during installation, reducing the risk of loss and ensuring consistent torque application. In mechanical systems, these assemblies are used to secure components, provide structural support, and maintain alignment between parts ¹.

Purpose of the 3011342 Captive Washer Cap Screw Assembly

The 3011342 Captive Washer Cap Screw Assembly plays a role in the operation of a truck by securing various components and contributing to the structural integrity of the vehicle. It is designed to withstand significant stress and vibration, common in the operation of commercial trucks, ensuring that parts remain firmly attached and aligned ².

Key Features

The 3011342 Captive Washer Cap Screw Assembly features a robust design that incorporates high-strength materials, typically steel alloys, to ensure durability and resistance to wear. The captive washer is a notable attribute, designed to stay attached to the screw, which simplifies the installation process and ensures consistent performance. Additionally, the assembly may include features such as a corrosion-resistant coating to enhance its longevity in harsh operating environments ³.

Benefits

Utilizing the 3011342 Captive Washer Cap Screw Assembly offers several advantages. Its design contributes to improved reliability by ensuring that components are securely fastened. The captive washer feature simplifies installation, reducing the time and effort required for assembly. Over time, the durability and ease of maintenance of this assembly can lead to cost savings by minimizing the need for frequent replacements or repairs ⁴.

Installation Process

Installing the 3011342 Captive Washer Cap Screw Assembly involves several steps to ensure proper fitting and function. Begin by identifying the correct location for the assembly on the truck. Use the appropriate tools, such as a torque wrench, to install the screw to the specified torque settings. This ensures that the assembly is securely fastened without over-tightening, which could damage the screw or the components it is attaching.

Maintenance Tips

To ensure the longevity and optimal performance of the 3011342 Captive Washer Cap Screw Assembly, regular maintenance is recommended. This includes periodic inspections to check for signs of wear, corrosion, or loosening. Cleaning the assembly and its surrounding area can prevent the accumulation of dirt and debris, which could affect its function. Applying a corrosion-resistant coating during maintenance can further protect the assembly from environmental damage.

Troubleshooting Common Issues

Common issues with the 3011342 Captive Washer Cap Screw Assembly may include loosening due to vibration or corrosion from exposure to the elements. If loosening is detected, re-tightening the assembly to the manufacturer’s specified torque settings can resolve the issue. In cases of corrosion, cleaning the affected area and applying a protective coating can prevent further degradation. Regular inspections during maintenance checks can help identify and address these issues before they lead to more significant problems.

Cummins: A Brief Overview

Cummins is a leading manufacturer in the commercial truck industry, known for its wide range of engines, components, and systems. With a history of innovation and quality, Cummins has established a reputation for producing reliable and efficient products that meet the demanding requirements of commercial transportation. The company’s commitment to excellence is reflected in its extensive product line, which includes engines, filtration systems, and aftermarket parts designed to enhance the performance and longevity of commercial vehicles.

Captive Washer Cap Screw Assembly (Part 3011342) in Cummins Engines

The Captive Washer Cap Screw Assembly, part number 3011342, is a critical component in various Cummins engines. This part is designed to provide secure fastening and stability, ensuring that engine components remain properly aligned and fastened during operation. Here is how this part integrates with different Cummins engines:

G855 Series

• G855
• G855 CM558
• GTA855 CM558 (CM2358) G101

The G855 series engines, including the G855, G855 CM558, and GTA855 CM558 (CM2358) G101, utilize the Captive Washer Cap Screw Assembly to secure various engine components. This assembly is crucial in maintaining the integrity of the engine’s structure and ensuring smooth operation.

K Series

• K19
• K38
• KTA19GC
• KTA19GC CM558

In the K series engines, such as the K19, K38, KTA19GC, and KTA19GC CM558, the Captive Washer Cap Screw Assembly is used to fasten and secure critical components. This ensures that the engine’s internal parts remain in place under various operating conditions.

N14 Series

• N14 CELECT
• N14 CELECT PLUS
• N14 G
• N14 MECHANICAL

The N14 series engines, including the N14 CELECT, N14 CELECT PLUS, N14 G, and N14 MECHANICAL, incorporate the Captive Washer Cap Screw Assembly to secure various engine parts. This assembly is essential for maintaining the alignment and stability of the engine components, contributing to the overall performance and longevity of the engine.

NH/NT 855 Series

• NH/NT 855

The NH/NT 855 engine uses the Captive Washer Cap Screw Assembly to ensure that the engine’s components are securely fastened. This assembly plays a vital role in maintaining the structural integrity of the engine.

QSK19 Series

• QSK19 CM500

The QSK19 CM500 engine utilizes the Captive Washer Cap Screw Assembly to secure various engine parts. This ensures that the engine components remain properly aligned and fastened during operation.

QSN14 Series

• QSN14 CM876 N103
• QSNT14 CM876 N102

The QSN14 CM876 N103 and QSNT14 CM876 N102 engines use the Captive Washer Cap Screw Assembly to fasten and secure critical components. This assembly is essential for maintaining the alignment and stability of the engine parts.

V Series

• V28
• V903
• VTA903 CM2250 V105

The V series engines, including the V28, V903, and VTA903 CM2250 V105, incorporate the Captive Washer Cap Screw Assembly to secure various engine components. This ensures that the engine’s internal parts remain in place under various operating conditions.

Role of Part 3011342 Captive Washer Cap Screw Assembly in Engine Systems

The Part 3011342 Captive Washer Cap Screw Assembly is integral to the secure and efficient operation of various engine components. Here’s how it interfaces with specific engine systems:

Aftercooler Drain Tubing

The assembly ensures the secure attachment of the aftercooler drain tubing, preventing leaks and maintaining the integrity of the cooling system.

Air Intake Manifold

In the air intake manifold, the captive washer cap screw assembly provides a tight seal, which is essential for optimal airflow and engine performance.

Air Intake Manifold Assembly

For the air intake manifold assembly, this part ensures that all components are firmly held together, reducing the risk of vibrations and enhancing durability.

Alternator Mounting

When mounting the alternator, the assembly plays a key role in securing the alternator to the engine block, ensuring stable operation and efficient power generation.

Assembly Step Control

In the assembly step control system, it maintains the precise alignment and connection of components, which is vital for the step-by-step control mechanisms.

Block Heater

For the block heater, the assembly ensures a secure fit, which is important for effective heat transfer and engine preheating during cold starts.

Component Cover

The component cover is held in place using this assembly, protecting internal engine parts from debris and environmental factors.

EBM Housing

In the EBM (Electric Blower Motor) housing, it ensures that the housing is securely attached, which is crucial for the blower motor’s efficient operation.

Flywheel

The assembly is used to secure the flywheel to the crankshaft, ensuring smooth power transmission and reducing the risk of mechanical failure.

Engine Control Module

For the engine control module, it provides a stable mounting solution, ensuring the module remains securely in place and functions correctly.

Engine Mounting

In engine mounting applications, the assembly helps in securing the engine to the chassis, which is essential for reducing vibrations and ensuring smooth operation.

Exhaust Recirculation

It plays a role in securing the exhaust recirculation components, ensuring they are properly aligned and sealed to reduce emissions effectively.

Flywheel Housing

The flywheel housing is securely attached using this assembly, which is important for the overall stability and performance of the flywheel system.

Housing

Generic housing components are often secured using this assembly, ensuring they remain in place and function as intended.

Lubricating Oil Filter

For the lubricating oil filter, it ensures a tight seal, which is vital for maintaining oil pressure and filtration efficiency.

Lubricating Oil Filter Cooler

In the lubricating oil filter cooler, the assembly secures the cooler to the engine, ensuring efficient oil cooling and prolonged engine life.

Lubricating Oil Pan

The lubricating oil pan is held securely in place, preventing oil leaks and ensuring the pan remains intact during engine operation.

Manifold Press Line Mounting

It is used to secure the manifold press lines, ensuring they remain in place and do not leak, which is important for maintaining engine pressure.

Mounting Baffle and Tubing

For mounting baffles and tubing, the assembly ensures these components are firmly attached, which is crucial for the efficient flow of fluids and gases.

MTG. AFC Drain

In the MTG. AFC (Aftercooler) drain system, it ensures the drain components are securely mounted, preventing leaks and maintaining system integrity.

Oil Cooler Water Plumbing

The assembly is used to secure the oil cooler water plumbing, ensuring efficient heat exchange and maintaining optimal engine temperature.

Plumbing Turbocharger

For turbocharger plumbing, it ensures all connections are secure, which is vital for the turbocharger’s efficient operation and overall engine performance.

Rear Water Header Cover

The rear water header cover is securely attached using this assembly, ensuring it remains in place and functions correctly.

Torque Converter Cooler Plumbing

In the torque converter cooler plumbing, the assembly ensures all components are tightly sealed, which is important for efficient cooling and performance.

Water Manifold

The water manifold is held securely in place, ensuring efficient water distribution and maintaining engine cooling efficiency.

WTR HDR Cover

Finally, the water header cover is securely mounted using this assembly, ensuring it remains in place and functions as intended.

Conclusion

The 3011342 Captive Washer Cap Screw Assembly is a critical component in the maintenance and operation of commercial trucks and various Cummins engines. Its robust design, featuring high-strength materials and a captive washer, ensures secure fastening, consistent torque application, and durability in harsh environments. Regular maintenance and proper installation are key to maximizing the benefits of this assembly, contributing to the overall reliability and efficiency of the vehicle.