136574
Hexagon Head Cap Screw
Cummins®

The Cummins Hexagon Head Cap Screw (Part #136574) is a specialized fastener designed for use in heavy-duty truck applications. It plays a role in securing various components within the truck, ensuring structural integrity and operational efficiency. Understanding its purpose and significance is key to maintaining the performance and reliability of heavy-duty trucks.

Basic Concepts of Hexagon Head Cap Screws

A hexagon head cap screw is a type of fastener characterized by its hexagonal head, which allows for efficient tightening and loosening using a wrench or socket. These screws are widely used in mechanical assemblies to secure components together, providing a strong and durable connection. The hexagonal shape of the head is designed to prevent rounding, ensuring that the screw can be manipulated with precision and ease ¹.

Purpose and Role in Truck Operation

This Cummins part is integral to the operation and maintenance of heavy-duty trucks. It is used in various applications within the truck, including securing engine components, transmission parts, and chassis assemblies. By providing a secure and reliable connection, this screw helps maintain the structural integrity and operational efficiency of the truck ².

Key Features

The Cummins Hexagon Head Cap Screw boasts several key features that enhance its functionality and durability. It is made from high-quality materials, ensuring resistance to corrosion and wear. The screw features a specific thread type that provides a strong grip, preventing loosening under vibration and stress. Additionally, its design includes unique elements that improve installation ease and overall performance ³.

Benefits

Using the Cummins Hexagon Head Cap Screw in truck maintenance offers several benefits. Its high-quality construction ensures improved reliability, reducing the risk of failure during operation. The screw’s design allows for easy installation, saving time and effort during maintenance procedures. Furthermore, its resistance to loosening ensures that components remain securely fastened, enhancing the truck’s performance and safety.

Installation Guidelines

Proper installation of the Cummins Hexagon Head Cap Screw is crucial for ensuring secure fastening. Follow these step-by-step guidelines for optimal results:

1. Clean the Surface: Ensure the mating surfaces are clean and free of debris to promote a strong bond.
2. Align the Screw: Position the screw in the designated hole, ensuring it is properly aligned.
3. Tighten Gradually: Use a wrench or socket to tighten the screw gradually, avoiding over-tightening.
4. Apply Torque: Refer to the manufacturer’s torque specifications to achieve the correct fastening tension.
5. Inspect the Connection: After installation, inspect the connection to ensure it is secure and properly torqued.

Troubleshooting and Maintenance

Common issues with hexagon head cap screws in truck applications include loosening, corrosion, and damage. To troubleshoot these problems, regularly inspect the screws for signs of wear or corrosion. If loosening is detected, re-tighten the screw to the specified torque. To prevent corrosion, apply a protective coating or lubricant. Replace damaged screws promptly to maintain the truck’s structural integrity.

Safety Considerations

When working with hexagon head cap screws, several safety considerations should be kept in mind. Use the appropriate tools to avoid damaging the screw or the surrounding components. Apply torque carefully to prevent over-tightening, which can lead to stripping or breakage. Regularly inspect screws for signs of wear or damage to ensure ongoing safety and performance.

Cummins Overview

Cummins Inc. is a leading manufacturer of diesel engines and related technologies, with a strong reputation for producing high-quality components. The company’s history dates back to the early 20th century, and it has since become a trusted name in the industry. Cummins is committed to innovation and excellence, providing reliable fastening solutions like the Hexagon Head Cap Screw to enhance the performance and durability of heavy-duty trucks.

Cummins Engine Part 136574: Hexagon Head Cap Screw

The Cummins part number 136574, a Hexagon Head Cap Screw, is a critical component in the assembly and maintenance of various Cummins engines. This part is designed to provide secure fastening in numerous engine applications, ensuring that components remain tightly secured under operational stresses.

K38 and K50 Engines

In the K38 and K50 engines, the Hexagon Head Cap Screw 136574 plays a vital role in maintaining the integrity of the engine’s structure. These engines, known for their robust design and reliability, utilize this screw in several key areas:

• Cylinder Head Attachment: Ensuring the cylinder heads are securely fastened to the engine block, preventing leaks and maintaining compression.
• Turbocharger Mounting: Providing a reliable connection between the turbocharger and its mounting bracket, which is crucial for maintaining efficient airflow and pressure.
• Exhaust Manifold Fastening: Securing the exhaust manifold to the engine block, which is essential for directing exhaust gases efficiently and preventing leaks.

V28 Engine

The V28 engine also benefits from the use of the Hexagon Head Cap Screw 136574 in similar critical applications:

• Valve Cover Fastening: Ensuring the valve covers are securely attached to the engine, protecting the internal components from debris and environmental factors.
• Oil Pan Attachment: Securing the oil pan to the engine block, which is essential for containing the engine oil and preventing leaks.
• Accessory Mounting: Providing a secure connection for various engine accessories, ensuring they remain in place under operational conditions.

Each of these applications highlights the importance of the Hexagon Head Cap Screw 136574 in maintaining the structural integrity and operational efficiency of Cummins engines.

Role of Part 136574 Hexagon Head Cap Screw in Engine Systems

Part 136574, the Hexagon Head Cap Screw, is integral to the assembly and functionality of various engine components. It provides secure fastening and ensures the structural integrity of the engine system. Here’s how it interfaces with the specified components:

Accessory Drive

The accessory drive system relies on precise mounting to ensure smooth operation of components like the alternator and power steering pump. Part 136574 is used to fasten brackets and mounts, maintaining alignment and reducing vibrations.

Air Starter

In air starter systems, the Hexagon Head Cap Screw secures the starter motor to the engine block, ensuring reliable engagement and disengagement during starting procedures. It also fastens the air starter plumbing, maintaining airtight connections.

Alternator Belt Shield and Alternator Mounting

The alternator belt shield protects the belt from debris, and the alternator mounting ensures the alternator is correctly positioned. Part 136574 is employed to secure these components, preventing movement that could lead to belt wear or electrical issues.

Front Engine Guard

The front engine guard protects internal components from external impacts. Hexagon Head Cap Screws are used to attach the guard to the engine frame, ensuring it remains in place under various operating conditions.

Lubricating Oil Filter and Lubricating Oil Mounting Pump

Secure attachment of the lubricating oil filter and mounting pump is essential for maintaining oil flow and pressure. Part 136574 ensures these components are firmly in place, preventing leaks and ensuring efficient lubrication.

Motor Mounting Support

The motor mounting support system requires robust fastening to handle the engine’s weight and vibrations. Hexagon Head Cap Screws are critical in securing these mounts, providing stability and durability.

Mounting Alternator, Mounting Valve Fuel Flow, and Starting Motor Mounting

These components need precise and secure mounting to function correctly. Part 136574 is utilized to fasten the alternator, valve fuel flow system, and starting motor, ensuring they operate within specified parameters.

Oil Pan, Oil Pan SPO, Oil Pan Sub-Option, and Pan Oil

The oil pan and its variants must be securely attached to the engine to prevent oil leaks. Hexagon Head Cap Screws are used to fasten these pans, ensuring a tight seal and maintaining oil levels.

Prelub Air Starter LB and Prelub Air Starter RB

These components require secure mounting to ensure proper pre-lubrication before engine start. Part 136574 is used to fasten these systems, guaranteeing they function correctly during the starting sequence.

Rear Sump Pan and Shallow Sump Oil Pan

Both the rear sump pan and shallow sump oil pan need to be securely attached to the engine to prevent oil leakage and maintain structural integrity. Hexagon Head Cap Screws play a key role in these attachments.

Starter and Starter Motor Support

The starter and its support system must be firmly mounted to ensure reliable engine starts. Part 136574 is used to secure these components, ensuring they can withstand the forces generated during starting.

Starting Motor and Starting Motor Mounting

Secure fastening of the starting motor and its mounts is essential for consistent performance. Hexagon Head Cap Screws are employed to ensure these components remain in place, facilitating reliable engine starts.

Conclusion

The Cummins Hexagon Head Cap Screw (Part #136574) is a critical component in the maintenance and operation of heavy-duty trucks and Cummins engines. Its design and features ensure secure fastening, structural integrity, and operational efficiency. Proper installation, regular maintenance, and adherence to safety guidelines are essential to maximize the benefits of this part and ensure the reliable performance of heavy-duty vehicles.