3949419
Double End Plain Stud
Cummins®

The Double End Plain Stud, Part #3949419, manufactured by Cummins, is a specialized fastener designed for use in commercial trucks. This component plays a crucial role in securing various parts within the truck’s engine and other mechanical systems. Cummins ensures that this stud meets the rigorous demands of heavy-duty applications.

Basic Concepts of Double End Plain Stud

A Double End Plain Stud is a fastener characterized by having threads on both ends, allowing it to be screwed into two separate components. This design enables a secure connection between parts that may experience significant stress or vibration. The stud is typically constructed from high-strength materials to withstand the demanding conditions found in commercial truck operations. Its function in mechanical systems is to provide a robust and reliable connection, ensuring that components remain firmly in place under various operational stresses ¹.

Role of 3949419 Double End Plain Stud in Truck Operation

The 3949419 Double End Plain Stud is utilized in areas where secure fastening is paramount, such as in the engine block, transmission, and other critical components. The stud’s integration within truck systems ensures that parts remain securely attached, contributing to the overall reliability and performance of the vehicle. Its application extends to areas where vibrations and mechanical stresses are common, making it a vital component in maintaining the integrity of the truck’s mechanical systems ⁴.

Key Features

The 3949419 Double End Plain Stud is distinguished by several key features that enhance its functionality. It is constructed from high-quality materials, ensuring durability and resistance to wear. The threading on both ends is precision-machined to provide a secure fit, while any unique design elements, such as specific thread patterns or coatings, further improve its performance in demanding applications. These features collectively contribute to the stud’s ability to withstand the harsh conditions encountered in commercial truck operations ².

Benefits

The use of the 3949419 Double End Plain Stud offers several benefits in demanding truck applications. Its durable construction and precise threading ensure a secure connection between components, enhancing the reliability of the truck’s mechanical systems. The stud’s design also contributes to improved performance, as it can withstand significant stress and vibration without failing. These attributes make it a valuable component for maintaining the operational efficiency and safety of commercial trucks ³.

Troubleshooting and Maintenance

Common issues associated with Double End Plain Studs may include loosening over time due to vibration or wear. Regular inspection and tightening can help prevent such issues. Diagnostic tips include checking for signs of wear or damage, such as stripped threads or corrosion, which may indicate the need for replacement. Maintenance practices should include proper torque specifications during installation to ensure a secure fit and periodic checks to confirm that the stud remains in good condition. These practices contribute to the longevity and optimal performance of the stud in commercial truck applications ⁴.

Compatibility with Cummins Engines

The Double End Plain Stud, identified by the part number 3949419, is compatible with various Cummins engines, ensuring secure connections between different engine parts. Here is a detailed look at the compatibility of this part with various Cummins engines:

B Series Engines

• B4.5 CM2350 B135B
• B6.7 CM2350 B135B
• B6.7 CM2670 B153B
• B6.7 CM2670 B164C

F Series Engines

• F4.5 CM2620 F139B

ISB Series Engines

• ISB (Chrysler)
• ISB CM2150
• ISB CM850
• ISB/ISD4.5 CM2150 B119
• ISB/ISD6.7 CM2150 SN
• ISB4.5 CM2350 B104
• ISB6.7 CM2250
• ISB6.7 CM2350 B101

ISBE Series Engines

• ISBE CM2150
• ISBE4 CM850

ISD Series Engines

• ISD4.5 CM2220 D108

ISF Series Engines

• ISF3.8 CM2220 AN
• ISF3.8 CM2220 F103

QSB Series Engines

• QSB4.5 CM2250 EC
• QSB4.5 CM850 (CM2850)
• QSB5.9 CM850
• QSB6.7 CM2250
• QSB6.7 CM850 (CM2850)
• QSB6.7 M CM2250
• QSB7 CM2880 B117

Role of Part 3949419 Double End Plain Stud in Engine Systems

The Part 3949419 Double End Plain Stud is integral in ensuring the secure assembly and operation of various engine components.

Fuel Pump System

In the fuel pump system, this stud is employed to firmly attach the fuel pump to its mounting bracket. This secure attachment is essential for maintaining the structural integrity of the fuel pump, ensuring it remains stable during engine operation and vibration.

Fuel Pump Mounting

The Double End Plain Stud plays a significant role in connecting the fuel pump to the engine block or frame. This connection is vital for the proper alignment and support of the fuel pump, which is necessary for efficient fuel delivery.

Gear Assembly Housing

The stud is used to fasten the housing to the engine block. This secure attachment ensures that the gear assembly remains in place, which is important for the smooth operation of the gear train and the overall functionality of the engine.

Gear Housing

The stud is utilized to connect the housing to other engine components. This connection helps in maintaining the alignment and stability of the gear housing, which is essential for the proper meshing of gears and the efficient transfer of power.

Rear Gear Train Accessory Drive

The Double End Plain Stud is employed to attach various accessories to the gear train. This secure attachment ensures that accessories such as the alternator, power steering pump, and air conditioning compressor remain firmly in place, which is necessary for their efficient operation and the overall performance of the engine.

Conclusion

The 3949419 Double End Plain Stud is a key component in the assembly and secure operation of various engine systems, ensuring that components remain firmly in place and function efficiently. Its durable construction, precise threading, and compatibility with various Cummins engines make it an essential part for maintaining the reliability and performance of commercial trucks.