3899746
Accessory Drive Support Gasket
Cummins®

Understanding the Cummins Accessory Drive Support Gasket (Part Number 3899746)

An accessory drive support gasket is a critical component in the engine system of commercial trucks. It ensures a secure seal between the accessory drive support and the engine block, preventing leaks and maintaining system integrity. Typically made from durable materials such as rubber or silicone, these gaskets are designed to withstand high temperatures and pressures ¹.

Over the years, accessory drive systems have evolved to become more efficient and reliable. The introduction of high-quality gaskets like the Cummins Accessory Drive Support Gasket (Part Number 3899746) has played a significant role in this advancement. Cummins, a leading manufacturer in the industry, has been at the forefront of developing high-performance gaskets that enhance the longevity and efficiency of truck engines ².

Accessory drive support gaskets are integral to various alternator mounting systems, including front-mounted, side-mounted, and rear-mounted configurations. The 3899746 gasket is specifically designed to fit seamlessly with Cummins engines, ensuring optimal performance and reliability.

The accessory drive support gasket plays a crucial role in maintaining the seal between the accessory drive support and the engine block. This prevents oil and coolant leaks, which can lead to engine damage. A well-functioning gasket ensures that the accessory drive system operates smoothly, contributing to the overall efficiency and performance of the truck ³.

The 3899746 gasket is engineered to withstand the harsh conditions of commercial truck operations, including high temperatures and vibrations. Cummins’ commitment to quality ensures that the 3899746 gasket provides long-lasting performance, reducing the need for frequent replacements.

Common indicators that an accessory drive support gasket needs replacement include oil or coolant leaks, unusual noises from the engine, and visible damage to the gasket. Regular inspections and timely replacement of the gasket can prevent potential engine issues and prolong the life of the accessory drive system.

To ensure the longevity of the 3899746 gasket, it is essential to follow proper maintenance procedures, including regular inspections and cleaning. Consulting with experienced mechanics or referring to Cummins’ maintenance guidelines can provide valuable insights into the proper care and maintenance of the accessory drive support gasket. By understanding these key aspects, engineers and mechanics can ensure the optimal performance and longevity of their commercial trucks.

Accessory Drive Support Gasket (Part Number 3899746) Compatibility with Cummins Engines

The Accessory Drive Support Gasket, identified by the part number 3899746, is a critical component designed to ensure the proper sealing and alignment of the accessory drive system in various Cummins engines. This gasket is engineered to fit seamlessly with a range of Cummins engine models, providing a reliable barrier against leaks and maintaining the integrity of the engine’s accessory drive system.

ISM CM570 and ISM CM570/870

The ISM CM570 and ISM CM570/870 engines benefit from the Accessory Drive Support Gasket’s ability to maintain the precise alignment of the accessory drive components. This gasket ensures that the engine operates efficiently by preventing any unwanted movement or misalignment that could lead to premature wear or failure.

ISM CM876 and ISM11 CM876 SN

For the ISM CM876 and ISM11 CM876 SN engines, the Accessory Drive Support Gasket plays a crucial role in maintaining the integrity of the accessory drive system. Its design allows for a perfect fit, ensuring that the gasket provides a reliable seal and supports the proper functioning of the engine’s accessories.

L10 CELECT, L10 GAS, and L10 MECHANICAL

The L10 CELECT, L10 GAS, and L10 MECHANICAL engines also rely on the Accessory Drive Support Gasket to maintain the alignment and sealing of the accessory drive system. This gasket is engineered to fit these engines perfectly, ensuring that the accessory drive components remain securely in place and operate efficiently.

M11 CELECT, M11 CELECT PLUS, and M11 MECHANICAL

The M11 CELECT, M11 CELECT PLUS, and M11 MECHANICAL engines are designed to benefit from the Accessory Drive Support Gasket’s ability to provide a reliable seal and support for the accessory drive system. This gasket ensures that the engine’s accessories remain properly aligned and sealed, contributing to the overall efficiency and longevity of the engine.

QSM11 CM570 and QSM11 CM876

Finally, the QSM11 CM570 and QSM11 CM876 engines also require the Accessory Drive Support Gasket to maintain the integrity of the accessory drive system. This gasket is engineered to fit these engines perfectly, ensuring that the accessory drive components remain securely in place and operate efficiently.

In summary, the Accessory Drive Support Gasket (Part Number 3899746) is a versatile and essential component that is designed to fit a wide range of Cummins engines. Its primary function is to maintain the proper alignment and sealing of the accessory drive system, ensuring that the engine operates efficiently and reliably.

Role of Part 3899746 Accessory Drive Support Gasket in Engine Systems

The Accessory Drive Support Gasket, identified by part number 3899746, is an integral component in the assembly and functionality of various engine systems. Its primary role is to provide a secure and sealed interface between the accessory drive components and the cylinder block.

Integration with Cylinder Block

The cylinder block serves as the foundational structure of the engine, housing the cylinders, pistons, and other critical components. The Accessory Drive Support Gasket ensures a tight seal between the accessory drive components and the cylinder block, preventing any fluid leaks that could compromise engine performance or lead to damage.

Interaction with Drive System

The drive system, which includes components like the crankshaft and camshaft, relies on the Accessory Drive Support Gasket to maintain the integrity of the accessory drive setup. This gasket helps in securing the accessory drive components, such as the alternator, power steering pump, and air conditioning compressor, to the engine block, ensuring they operate efficiently without any undue movement or misalignment.

Coordination with Fuel Pump

While the fuel pump is not directly connected to the Accessory Drive Support Gasket, the gasket’s role in maintaining a sealed environment within the engine compartment indirectly supports the fuel system’s efficiency. A well-sealed engine compartment ensures that the fuel pump operates in an environment free from contaminants, thereby enhancing its longevity and performance.

Role in Lower Engine Gasket Set

The lower engine gasket set includes various gaskets that seal the lower portion of the engine, including the oil pan, front cover, and timing cover. The Accessory Drive Support Gasket complements this set by providing an additional layer of sealing, particularly around the accessory drive area, which is often subjected to higher stress and movement.

Contribution to Overhaul Kit

In an overhaul kit, which typically includes a comprehensive set of gaskets, seals, and other components needed for a complete engine rebuild, the Accessory Drive Support Gasket plays a vital role. It ensures that during the overhaul process, the accessory drive components are properly sealed and supported, contributing to the overall success and durability of the engine rebuild.