3286480
Flat Head Cap Screw
Cummins®

Introduction

The Cummins 3286480 Flat Head Cap Screw is a specialized fastener designed for use in heavy-duty truck applications. It serves a vital role in securing various components within the truck’s mechanical systems, ensuring stability and reliability under demanding conditions. This screw is part of Cummins Inc.’s extensive range of high-quality automotive and heavy-duty truck parts, known for their durability and performance ⁴.

Basic Concepts of Flat Head Cap Screws

Flat head cap screws are a type of fastener characterized by their flat, countersunk head, which sits flush with or below the surface of the material being fastened. This design allows for a smooth surface finish and reduces the risk of snagging. They are commonly used in mechanical assemblies where a low-profile head is required, and they function by threading into a pre-drilled hole, securing components together under tension ¹.

Purpose of the 3286480 Flat Head Cap Screw in Truck Operations

The 3286480 Flat Head Cap Screw plays a specific role in the operation and maintenance of heavy-duty trucks. It is utilized in various truck systems, including engine components, chassis assemblies, and other critical areas where secure fastening is necessary. Its design ensures that components remain firmly in place, even under the high stresses and vibrations typical of heavy-duty truck environments ².

Key Features

The 3286480 Flat Head Cap Screw boasts several key features that enhance its performance and durability. It is made from high-strength materials, ensuring resistance to wear and corrosion. The screw features a precise thread type that provides a strong grip, and its flat head design allows for a snug fit that minimizes the risk of loosening. Additionally, it may include unique attributes such as a special coating or treatment to further improve its performance in harsh conditions ³.

Benefits of Using the 3286480 Flat Head Cap Screw

Utilizing the 3286480 Flat Head Cap Screw offers several advantages. Its high-strength material composition and precise thread design contribute to improved fastening strength, making it less likely to loosen over time. The flat head design ensures a low profile, which is beneficial in applications where space is limited or a smooth surface is required. Furthermore, its durability and resistance to corrosion make it well-suited for the high-stress environments typical in heavy-duty truck applications ⁴.

Installation Guidelines

Proper installation of the 3286480 Flat Head Cap Screw is crucial for ensuring optimal performance and longevity. Begin by selecting the appropriate size and type of screw for the application. Use a drill to create a pilot hole that matches the screw’s diameter, ensuring it is deep enough to accommodate the screw’s length. Insert the screw into the hole and use a torque wrench to tighten it to the manufacturer’s specified torque setting. This ensures the screw is secure without over-tightening, which could damage the material or the screw itself ¹.

Maintenance and Care

Regular maintenance and care of the 3286480 Flat Head Cap Screw are important for prolonging its lifespan and ensuring continued reliable performance. Inspect the screw regularly for signs of wear, corrosion, or loosening. Clean the screw and surrounding area to remove any dirt or debris that could affect its performance. If the screw shows significant wear or damage, consider replacing it to maintain the integrity of the fastened components ².

Troubleshooting Common Issues

Common issues with flat head cap screws in truck applications may include loosening, corrosion, or damage from wear. To address these problems, first, ensure that the screw was installed correctly and tightened to the proper torque specification. If corrosion is present, clean the affected area thoroughly and apply a corrosion-resistant coating if necessary. For screws that show signs of wear or damage, replacement may be the best solution to ensure the continued stability and reliability of the fastened components ³.

Cummins: A Brief Overview

Cummins Inc. is a global power leader that designs, manufactures, and distributes a wide range of engines, filtration, and power generation products. With a history spanning over a century, Cummins has established a strong reputation for quality, innovation, and reliability in the automotive and heavy-duty truck industry. The company’s product range includes engines, powertrain components, and aftermarket parts, all designed to meet the demanding requirements of heavy-duty applications ⁴.

Cummins Flat Head Cap Screw 3286480 Compatibility

The Cummins Flat Head Cap Screw part number 3286480 is a versatile component designed to fit various Cummins engines. This screw is integral in securing different parts within the engine assembly, ensuring structural integrity and operational efficiency. Below is a detailed overview of the engines with which this part is compatible:

ISB Series Engines

• ISB CM2150
• ISB CM850
• ISB5.9 CM2880 B110
• ISB5.9 CM2880 B140
• ISB5.9 CM2880 B149
• ISB6.7 CM2250
• ISB6.7 CM2350 B101
• ISB6.7 G CM2180 B118

The ISB series engines, ranging from 5.9 to 6.7 liters, utilize the 3286480 Flat Head Cap Screw in various applications. This includes securing engine covers, brackets, and other components that require a robust fastening solution.

ISBE and ISC Series Engines

• ISBE CM800
• ISC CM850

The ISBE and ISC engines, both of which are 8.9 liters, also incorporate the 3286480 Flat Head Cap Screw. This part is used in securing the engine’s structural components, ensuring that the engine maintains its integrity under various operating conditions.

ISL9 Series Engine

• ISL9 CM2150 SN

The ISL9 engine, a 9.0-liter engine, uses the 3286480 Flat Head Cap Screw in its assembly. This screw is crucial for fastening parts that need to withstand high stress and pressure.

QSB Series Engines

• QSB4.5 CM2250 EC
• QSB4.5 CM850 (CM2850)
• QSB6.7 CM2250
• QSB6.7 CM2350 B105
• QSB6.7 CM850 (CM2850)
• QSB7 CM2880 B117

The QSB series engines, ranging from 4.5 to 7.0 liters, also feature the 3286480 Flat Head Cap Screw. This part is used in securing various engine components, ensuring that the engine operates smoothly and efficiently.

Other Cummins Engines

• 6B5.9
• B5.6 CM2670 B152B
• B6.7 CM2670 B164C
• B6.7S

These engines, while not as commonly referenced, also utilize the 3286480 Flat Head Cap Screw. This part is essential in maintaining the structural integrity of these engines, ensuring they perform reliably under various conditions.

The Cummins Flat Head Cap Screw 3286480 is a critical component across a wide range of Cummins engines, providing a reliable and robust fastening solution for various engine parts.

Role of Part 3286480 Flat Head Cap Screw in Engine Systems

In the intricate assembly of engine systems, the part 3286480 Flat Head Cap Screw serves as a vital fastening component, ensuring the secure attachment and alignment of various parts. Its application spans across multiple engine components, contributing to the overall stability and functionality of the engine.

Compressor and Air Compressor

Within the compressor and air compressor systems, the Flat Head Cap Screw is utilized to fasten critical components such as the compressor housing to its mounting bracket. This secure attachment is essential for maintaining the structural integrity of the compressor, allowing it to operate efficiently under varying pressure conditions. Additionally, in air compressors, these screws help in securing the air filter housing, ensuring a tight seal that prevents air leaks and maintains optimal compressor performance.

Refrigerant System

In refrigerant systems, the Flat Head Cap Screw plays a role in securing the refrigerant lines to the compressor and other components. This secure attachment is vital for maintaining the integrity of the refrigerant lines, ensuring there are no leaks that could compromise the cooling efficiency of the system. The screw’s design allows for a snug fit, which is crucial for withstanding the pressure fluctuations within the refrigerant cycle.

Fuel Pump Coupling

For the fuel pump coupling, the Flat Head Cap Screw is used to secure the coupling to the engine block or fuel pump housing. This ensures that the fuel pump operates smoothly, without any misalignment that could lead to inefficient fuel delivery or increased wear on the pump components. The secure attachment provided by the screw is essential for the reliable operation of the fuel system.

Main Bearing Cap Replacer

In the context of the main bearing cap replacer, the Flat Head Cap Screw is instrumental in securing the bearing caps to the engine block. This is a key step in the replacement or maintenance of main bearings, ensuring that the caps are tightly fastened to maintain the precise alignment of the crankshaft within the engine block. Proper fastening is essential for the smooth operation of the engine and the longevity of the bearing components.

Mounting and Lifting Bracket

For mounting and lifting brackets, the Flat Head Cap Screw is used to secure these brackets to the engine or other structural components. This is particularly important during engine installation, removal, or maintenance, where secure attachment points are necessary for safely lifting and positioning the engine. The screw’s design allows for a strong and reliable connection, ensuring safety and efficiency during these operations.

Pulley and Water Pump Drive

In the pulley and water pump drive systems, the Flat Head Cap Screw is used to secure the pulley to the water pump or other driven components. This secure attachment is essential for the efficient transfer of power from the engine to the water pump, ensuring that the cooling system operates effectively. The screw’s role in maintaining the alignment and stability of the pulley is critical for the smooth operation of the water pump drive system.

Conclusion

The Cummins 3286480 Flat Head Cap Screw is a critical component in the maintenance and operation of heavy-duty trucks and various Cummins engines. Its design and features ensure secure fastening, durability, and resistance to harsh conditions, contributing to the overall reliability and performance of the mechanical systems it supports.