4975688
Idler Pulley Bracket
Cummins®

AVAILABLE

Cummins®

Ships within 1-3 business days

$1,799.95 $2,141.94

This truck part is made by Cummins®. We guarantee that all of our parts are from the OEM (original equipment manufacturer), ensuring a proper fit and quality manufacturing.


DESCRIPTION

The Cummins 4975688 Idler Pulley Bracket is a component designed for use in heavy-duty truck maintenance and operation. Cummins, a well-established name in the automotive and heavy-duty truck industry, produces this bracket to enhance the efficiency and reliability of truck engine systems. Understanding the role and functionality of this Cummins part is important for maintaining optimal truck performance.

Basic Concepts of Idler Pulley Brackets

An idler pulley bracket is a part of the belt drive system that supports the idler pulley. Its primary function is to maintain the proper tension and alignment of the belts within the system. The idler pulley bracket interacts with various components, including belts, tensioners, and pulleys, to ensure smooth and efficient operation of the belt drive system. By keeping the belts properly aligned and tensioned, the idler pulley bracket helps to prevent slippage and wear, contributing to the overall efficiency of the system 1.

Role of the 4975688 Idler Pulley Bracket in Truck Operation

The 4975688 Idler Pulley Bracket plays a specific role in the operation of a truck by maintaining the proper tension and alignment of the belts. This ensures that the belts run smoothly and efficiently, reducing the risk of slippage and wear. Proper belt tension and alignment are vital for the efficient transfer of power within the engine system, contributing to the overall performance and reliability of the truck 2.

Key Features of the 4975688 Idler Pulley Bracket

The 4975688 Idler Pulley Bracket is designed with specific characteristics that enhance its performance and durability. Constructed from high-quality materials, this bracket is built to withstand the rigors of heavy-duty truck operation. Its design includes features that ensure precise alignment and tension of the belts, contributing to the efficient operation of the belt drive system. The use of durable materials and precise engineering in its construction ensures that the bracket can endure the demanding conditions of heavy-duty truck use 3.

Benefits of Using the 4975688 Idler Pulley Bracket

Using the 4975688 Idler Pulley Bracket provides several advantages. It contributes to improved efficiency by ensuring that the belts within the system are properly tensioned and aligned. This reduces wear on the belts and enhances the reliability of the belt drive system. The durable construction of the bracket ensures long-lasting performance, reducing the need for frequent replacements and maintenance. Additionally, the precise design of the bracket helps to minimize noise and vibration, contributing to a smoother operation of the truck.

Installation and Compatibility

Proper installation of the 4975688 Idler Pulley Bracket is important to ensure its effective functioning. It is designed to be compatible with various truck models and engine types, but it is important to follow specific guidelines to ensure a proper fit and function. Careful attention to the installation process helps to ensure that the bracket is securely mounted and properly aligned, contributing to the efficient operation of the belt drive system.

Troubleshooting Common Issues

Common problems associated with idler pulley brackets include noise, vibration, and belt slippage. These issues can often be traced back to improper installation, wear and tear, or misalignment. Troubleshooting steps may include inspecting the bracket and belts for signs of wear, ensuring proper alignment and tension, and making any necessary adjustments or replacements. Addressing these issues promptly helps to maintain the efficiency and reliability of the belt drive system.

Maintenance Tips

Maintaining the 4975688 Idler Pulley Bracket is important to ensure optimal performance and longevity. Regular inspection for signs of wear or damage is recommended, along with ensuring that the belts are properly tensioned and aligned. Lubrication of moving parts may also be necessary to reduce friction and wear. Following a regular maintenance schedule helps to identify and address potential issues before they become more serious, contributing to the long-term reliability of the belt drive system.

Cummins: A Brief Overview

Cummins Inc. is a leading manufacturer in the automotive and heavy-duty truck industry, known for its commitment to quality and innovation. With a diverse product range that includes engines, filtration systems, and aftermarket parts, Cummins has established a reputation for producing reliable and high-performance components. The company’s focus on research and development ensures that its products meet the evolving needs of the industry, contributing to the efficiency and reliability of heavy-duty trucks.

Idler Pulley Bracket 4975688 Compatibility with Cummins Engines

The Idler Pulley Bracket part number 4975688, manufactured by Cummins, is designed to fit seamlessly with several of their engine models. This bracket plays a role in maintaining the alignment and tension of the engine’s accessory belts, ensuring optimal performance and longevity of the engine components.

QST30 CM2350 T101 and QST30 CM552

The Idler Pulley Bracket 4975688 is specifically engineered to fit the QST30 CM2350 T101 and QST30 CM552 engines. These engines are part of the Cummins QST30 series, which is known for its reliability and efficiency in various applications. The bracket’s design ensures that it can handle the specific demands of these engines, providing a stable platform for the idler pulley. This stability is important for maintaining the correct tension on the accessory belts, which in turn ensures that the engine’s ancillary systems, such as the alternator and air conditioning compressor, operate efficiently.

The bracket’s compatibility with these engines is a result of meticulous engineering and testing, ensuring that it meets the stringent requirements of Cummins’ quality standards. This compatibility allows for easy installation and replacement, minimizing downtime and maintenance costs.

Role of Part 4975688 Idler Pulley Bracket in Engine Systems

The 4975688 Idler Pulley Bracket is a component in the efficient operation of various engine systems, particularly in relation to the drive and fan components.

Integration with the Drive System

In the drive system, the 4975688 Idler Pulley Bracket supports the idler pulley, which is responsible for maintaining tension in the belt drive system. This tension ensures that the belt remains properly aligned and engaged with other pulleys, facilitating the transfer of power from the engine to various accessories such as the alternator, water pump, and air conditioning compressor. The bracket’s secure mounting allows the idler pulley to adjust the belt tension dynamically as the engine operates, accommodating changes in load and temperature.

Function in the Fan System

Within the fan system, the 4975688 Idler Pulley Bracket plays a role in the operation of the cooling fan. The bracket supports the idler pulley that helps maintain the necessary tension in the fan belt. This ensures that the fan operates efficiently, providing adequate airflow through the radiator to cool the engine. Proper belt tension is vital for the fan to spin at the correct speed, which is important for optimal engine cooling, especially under high-load conditions or in hot environments.

Overall Contribution to Engine Performance

By ensuring that both the drive and fan systems operate with the correct belt tension, the 4975688 Idler Pulley Bracket contributes to the overall reliability and performance of the engine. It helps prevent belt slippage, reduces wear on both the belt and pulleys, and ensures that all engine accessories receive consistent power transmission. This, in turn, enhances the engine’s durability and efficiency, making the 4975688 Idler Pulley Bracket a key component in maintaining the engine’s operational integrity.

Conclusion

The 4975688 Idler Pulley Bracket by Cummins is a critical component in the maintenance and operation of heavy-duty trucks. Its role in maintaining proper belt tension and alignment contributes to the efficient operation of the engine’s drive and fan systems. The durable construction and precise engineering of this part ensure long-lasting performance and reliability. Regular maintenance and proper installation are key to maximizing the benefits of this Cummins part, ensuring optimal truck performance and longevity.


  1. Dixon, John C. Tyres Suspension and Handling Second Edition. SAE International, 1996.

  2. Trzesniowski, Michael. The Complete Vehicle. Springer Nature, 2023.

  3. Brown Jr, Andrew. Technologies and Approaches to Reducing the Fuel Consumption of Medium and Heavy-Duty Vehicles. National Academy of Sciences, 2010.

SPECIFICATIONS

Package Dimensions
13.13 x 9.88 x 4.0 in
Weight
10.35 lb
* This information is provided as is and may be out of date. Please contact us or the manufacturer to verify warranty coverage.
* Variable geometry turbocharger and electronic actuator repairs are not eligible to be claimed as over-the-counter under New or ReCon parts warranty for parts installed after October 1, 2018.
* Diesel Oxidation Catalyst (DOC), Diesel Particulate Filter (DPF), Selective Catalyst Reduction (SCR) catalyst, and Electronic Control Module (ECM) repairs are not eligible to be claimed as over-the-counter under New or ReCon parts warranty for parts installed after January 1, 2020.
* These restrictions are only applicable to New parts and ReCon parts coverages for the components listed above sold to a customer in the US or Canada. All other coverages are excluded. All other regions are excluded.