103009
Hexagon Head Cap Screw
Cummins®

Introduction

The Hexagon Head Cap Screw is a fundamental component in the maintenance and operation of commercial trucks. It is utilized in various fastening applications across mechanical assemblies. Cummins Inc., a renowned manufacturer in the automotive industry, produces this part. Cummins is known for its commitment to quality and innovation in manufacturing truck components ¹.

Basic Concepts of Hexagon Head Cap Screw

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. The screw is designed with threads that engage with a mating part, providing a secure connection. Cap screws are commonly used in mechanical assemblies to join components together, ensuring structural integrity and functionality ².

Purpose of the 103009 Hexagon Head Cap Screw in Truck Operation

This Cummins part plays a specific role in the operation and maintenance of commercial trucks. It is employed in various truck assemblies where secure fastening is required. Common applications include attaching engine components, securing chassis parts, and fastening body panels. The screw’s design ensures a reliable connection, contributing to the overall performance and safety of the truck ³.

Key Features of the 103009 Hexagon Head Cap Screw

This part is engineered with several key features to enhance its performance and durability. It features a specific thread type that provides a strong grip on mating parts. The screw is made from high-quality material, ensuring resistance to wear and corrosion. Additionally, it may have special coatings or treatments that further improve its performance in demanding environments.

Benefits of Using the 103009 Hexagon Head Cap Screw

Using this Cummins part offers several advantages. Its design provides increased strength, making it suitable for high-stress applications. The screw’s hexagonal head allows for easy installation and removal, reducing the risk of damage to the fastener or surrounding components. Moreover, its resistance to loosening ensures a secure connection over time, contributing to the reliability of truck assemblies.

Installation and Usage Guidelines

Proper installation of the 103009 Hexagon Head Cap Screw is crucial for ensuring a secure and lasting fastening. Follow these guidelines for optimal results:

1. Select the appropriate wrench or socket that matches the screw’s hexagonal head.
2. Apply the recommended torque specification to achieve the desired clamping force without over-tightening.
3. Use a torque wrench for precise application of torque.
4. Ensure the mating surfaces are clean and free of debris to prevent galling and ensure a proper thread engagement.

Troubleshooting Common Issues

Common problems associated with Hexagon Head Cap Screws include stripping and seizing. To address these issues:

• Use the correct tool size to avoid stripping the screw head.
• Apply lubricant to the threads to reduce friction and prevent seizing.
• Inspect screws regularly for signs of wear or damage and replace them as necessary.

Maintenance Tips

Regular maintenance of Hexagon Head Cap Screws is important for ensuring longevity and performance. Inspect screws periodically for signs of corrosion, loosening, or damage. Clean and lubricate screws as needed to prevent seizing and ensure smooth operation. Consider replacement if screws show significant wear or if they have been exposed to harsh environments.

Cummins as a Manufacturer

Cummins Inc. is a leading manufacturer in the automotive industry, with a strong reputation for quality and innovation. The company has a long history of producing reliable and high-performance truck components. Cummins’ commitment to excellence is evident in its rigorous manufacturing processes and continuous investment in research and development.

Cummins Hexagon Head Cap Screw 103009 Compatibility with Engine Models

This Cummins part is a versatile component designed to fit a variety of Cummins engine models. This screw is integral in securing various parts within the engine assembly, ensuring structural integrity and proper function. Below is a detailed breakdown of the engine models that are compatible with this screw:

4B3.9 and 6B5.9 Engines

The 4B3.9 and 6B5.9 engines, both part of the Cummins B Series, are medium-duty diesel engines known for their reliability and performance. This screw is used in these engines to secure components such as valve covers, intake manifolds, and other critical parts.

6C8.3 and K19 Engines

The 6C8.3 and K19 engines are also medium-duty diesel engines, often found in various industrial and commercial applications. This screw is utilized in these engines for similar purposes, ensuring that components remain tightly fastened and secure.

G855 and G855 CM558 Engines

The G855 and G855 CM558 engines are part of Cummins’ GenSet series, designed for generating power in a variety of settings. This screw is used in these engines to secure components such as generator housings and other critical parts.

GTA38 G CMEICS G116C and GTA855 CM558 (CM2358) G101 Engines

These engines, part of the GTA series, are high-performance diesel engines used in heavy-duty applications. This screw is used to secure heavy-duty components, ensuring that the engine can withstand rigorous use.

KTA19GC, KTA19GC CM558, and KTA38GC CM558 Engines

The KTA19GC, KTA19GC CM558, and KTA38GC CM558 engines are part of the KTA series, designed for heavy-duty applications. This screw is used to secure components such as engine blocks, cylinder heads, and other critical parts.

L10 MECHANICAL and N14 Series Engines

The L10 MECHANICAL and N14 Series engines (including N14 CELECT, N14 CELECT PLUS, N14 G, and N14 MECHANICAL) are medium-duty diesel engines. This screw is used in these engines to secure components such as valve covers, intake manifolds, and other critical parts.

NH/NT 855 Engines

The NH/NT 855 engines are part of Cummins’ agricultural and construction equipment lineup. This screw is used in these engines to secure components such as engine blocks, cylinder heads, and other critical parts.

QSK19 and QSK38 Series Engines

The QSK19 and QSK38 series engines (including QSK19 CM2350 K114, QSK19 CM500, QSK19 CM850 MCRS, QSK19G, QSK38 CM2150 MCRS, and QSK38 CM850 MCRS) are high-performance diesel engines used in heavy-duty applications. This screw is used to secure heavy-duty components, ensuring that the engine can withstand rigorous use.

This comprehensive compatibility ensures that the 103009 screw is a reliable choice for securing components across a wide range of Cummins engine models.

Role of Part 103009 Hexagon Head Cap Screw in Engine Systems

This part is integral to the secure assembly and reliable operation of various engine components. Its application spans across multiple systems, ensuring the structural integrity and functional efficiency of the engine.

Accessory Drive and Adjusting Link

In the accessory drive system, the Hexagon Head Cap Screw is used to fasten the adjusting link, which is essential for maintaining the correct tension and alignment of the drive belt. This ensures efficient power transmission to auxiliary components such as the alternator and water pump.

Air Compressor and Air Intake Kit

For the air compressor and air intake kit, the screw secures critical components, ensuring a stable and leak-free connection. This is vital for maintaining the compressor’s efficiency and the integrity of the air intake system, which directly impacts engine performance.

Assembly and Mounting Idler

In the assembly and mounting of the idler, the Hexagon Head Cap Screw plays a key role in securing the idler pulley. This is important for the smooth operation of the timing belt or chain, reducing wear and ensuring consistent engine timing.

Auxiliary Cooling System and EBM-Pump

Within the auxiliary cooling system, particularly with the EBM-pump, the screw is used to attach the pump to its mounting bracket. This secure attachment is necessary for the pump’s stable operation, which is crucial for maintaining optimal engine temperature.

Engine Support and Fan Mounting Idler

The screw is also employed in the engine support structure and the fan mounting idler. In these applications, it ensures that the engine remains firmly mounted and that the fan operates efficiently, contributing to effective engine cooling.

FP & Gov Sump and Front Gear Housing

In the FP & Gov sump and front gear housing, the Hexagon Head Cap Screw is used to secure various covers and plates. This ensures that these components remain tightly sealed, preventing oil leaks and maintaining the integrity of the lubrication system.

Fuel Supply Plumbing and Fuel System RB Drain

For the fuel supply plumbing and the fuel system RB drain, the screw secures fittings and connections. This is essential for maintaining a leak-free fuel system, which is critical for engine reliability and performance.

Gear Box Bracket and Lubricating Oil Scavenge Pump

The screw is utilized in the gear box bracket and the lubricating oil scavenge pump to ensure these components are securely mounted. This is important for the stable operation of the gearbox and the efficient scavenging of oil, which is vital for engine lubrication.

Magtronic Accessory Drive and Mounting Fuel Filter

In the magtronic accessory drive and the mounting of the fuel filter, the screw ensures these components are firmly attached. This is necessary for the reliable operation of the accessory drive and the secure mounting of the fuel filter, which impacts fuel delivery to the engine.

PTG Fuel Pump with Torque and Rear Clutch

The screw is also used in the PTG fuel pump with torque and the rear clutch. In these applications, it ensures that the fuel pump is securely mounted and that the clutch components are properly aligned and fastened, which is essential for engine performance and drivability.

Rear Gear Mounting Plate and Refrigerant Compressor

In the rear gear mounting plate and the refrigerant compressor, the screw secures these components in place. This is important for the stable operation of the rear gear and the efficient functioning of the refrigerant compressor, which is vital for engine cooling in certain applications.

Reverse & Reduction Gear and Rock Shield

The screw is employed in the reverse & reduction gear and the rock shield to ensure these components are securely attached. This is necessary for the reliable operation of the gear system and the protection of the engine from debris.

Tubing Fuel

Finally, in the tubing fuel system, the screw is used to secure fuel lines and fittings. This ensures a leak-free fuel delivery system, which is essential for engine performance and safety.

Conclusion

The 103009 Hexagon Head Cap Screw by Cummins is a critical component in the maintenance and operation of commercial trucks. Its design and features ensure secure fastening across various engine components, contributing to the overall performance and safety of the vehicle. Proper installation, regular maintenance, and understanding its role in different engine systems are essential for maximizing the effectiveness of this part.

References