5585086
Starting Motor
Cummins®

The Cummins 5585086 Starting Motor is a component designed for use in commercial trucks. It serves the purpose of initiating engine operation, which is a fundamental requirement for the functionality of these vehicles. The significance of this starting motor lies in its ability to ensure reliable and efficient engine starts, contributing to the overall performance and operational readiness of commercial trucks.

Basic Concepts of Starting Motors

Starting motors operate on the principle of converting electrical energy into mechanical energy to initiate engine operation. When the ignition key is turned, electrical current flows to the starter motor, which then engages with the engine’s flywheel. This engagement causes the flywheel to rotate, which in turn starts the engine. The process involves several components working in unison, including the starter solenoid, which controls the engagement of the starter motor with the flywheel ¹.

Purpose of the Cummins 5585086 Starting Motor

The Cummins 5585086 Starting Motor plays a role in the engine starting process by providing the necessary torque to turn the engine over. Its function is to engage with the flywheel of the engine and rotate it at a sufficient speed to allow the engine to start. This motor is specifically engineered to handle the demands of commercial truck engines, which require robust and reliable starting capabilities.

Key Features

The Cummins 5585086 Starting Motor incorporates several key features that enhance its performance and durability. Its design includes high-quality construction materials that are resistant to wear and corrosion, ensuring longevity in demanding environments. Technological advancements such as improved electrical efficiency and reduced friction components contribute to its reliable operation. Additionally, the motor’s compact design allows for easier installation and maintenance.

Benefits

The Cummins 5585086 Starting Motor offers several benefits to commercial truck operators. Its reliable operation ensures consistent engine starts, reducing downtime and improving operational efficiency. The motor’s efficiency in converting electrical energy to mechanical energy contributes to fuel savings and lower operating costs. Furthermore, its robust construction and advanced features enhance the overall performance and durability of the truck’s engine system.

Installation Process

Installing the Cummins 5585086 Starting Motor requires careful attention to detail and the use of appropriate tools. The process involves disconnecting the battery to prevent electrical accidents, removing the old starter motor, and installing the new one in its place. It is important to ensure proper alignment and secure mounting of the motor to the engine. Following the manufacturer’s instructions and taking necessary safety precautions are crucial for a successful installation.

Maintenance Tips

To ensure optimal performance and longevity of the Cummins 5585086 Starting Motor, regular maintenance is recommended. This includes periodic inspections for signs of wear or damage, cleaning the motor and its connections to prevent corrosion, and ensuring that all electrical connections are secure and free from debris. Additionally, following the manufacturer’s recommended service intervals for more comprehensive maintenance can help prevent unexpected failures.

Troubleshooting Common Issues

Common issues with the Cummins 5585086 Starting Motor may include difficulty starting the engine or unusual noises during operation. These problems can often be traced to electrical issues, such as poor connections or a weak battery, or mechanical issues within the motor itself. Troubleshooting involves checking the battery and electrical connections, inspecting the motor for signs of wear or damage, and ensuring that the motor is properly engaged with the flywheel. Addressing these issues promptly can help maintain the motor’s performance and reliability.

Cummins Overview

Cummins Inc. is a global power leader that designs, manufactures, and distributes engines, filtration, and power generation products. With a history spanning over a century, Cummins has established a reputation for quality, innovation, and reliability in the automotive industry. The company offers a wide range of products designed to meet the needs of various industries, including commercial trucking, construction, agriculture, and power generation. Cummins’ commitment to excellence and customer satisfaction has made it a trusted name in the industry ².

Cummins Engine Compatibility with Starting Motor Part 5585086

The Cummins Starting Motor part number 5585086 is designed to be compatible with a variety of Cummins engines. This part is engineered to ensure reliable and efficient engine starting across different engine models. Below is a detailed description of the engines that this starting motor fits, grouped by engine series and model variations.

B Series Engines

• B4.5 CM2350 B129B
• ISB4.5 CM2350 B104

These engines are part of the B series, known for their robust performance and reliability in various applications. The 5585086 starting motor is specifically designed to handle the starting requirements of these engines, ensuring smooth and efficient engine cranking.

D Series Engines

• D4.0 CM2620 D103B
• F3.8 CM2350 F120B
• F3.8 CM2620 F137B
• F4.5 CM2620 F139B

The D series engines, including the D4.0 and F series variants, are designed for heavy-duty applications. The 5585086 starting motor is engineered to provide the necessary power and durability to start these engines under various conditions, ensuring reliable performance in demanding environments.

F Series Engines

• F3.8 F102
• F3.8 CM2350 F120B
• F3.8 CM2620 F137B
• F4.5 CM2620 F139B

The F series engines, particularly the F3.8 and F4.5 models, are known for their versatility and efficiency. The 5585086 starting motor is compatible with these engines, providing the necessary torque and power to ensure reliable engine starts, even in challenging conditions.

ISF Series Engines

• ISF3.8 CM2220 AN
• ISF3.8 CM2220 F103
• ISF3.8 CM2350 F109
• ISF4.5 CM2220 F123

The ISF series engines are designed for high-performance applications. The 5585086 starting motor is engineered to meet the specific starting requirements of these engines, ensuring efficient and reliable engine cranking across various operating conditions.

QSF Series Engines

• QSF3.8 CM2350 F107
• QSF3.8 CM2880 F112

The QSF series engines are designed for specialized applications, often requiring high reliability and performance. The 5585086 starting motor is compatible with these engines, providing the necessary power and efficiency to ensure reliable engine starts in demanding environments.

This compatibility ensures that the 5585086 starting motor can be used across a wide range of Cummins engines, providing a reliable and efficient solution for engine starting needs.

Part 5585086 Starting Motor Component Usage

The Part 5585086 Starting Motor is a pivotal component in the operation of various engine systems. Its primary role is to initiate the engine’s operation by converting electrical energy into mechanical energy, which in turn rotates the engine’s crankshaft. This action is essential for the engine to reach the necessary speed for combustion to occur independently.

When the ignition key is turned, the starting motor engages with the flywheel or flexplate through a series of gears, including the pinion gear and ring gear. The starting motor’s robust construction ensures it can handle the high torque required during startup. It works in conjunction with the battery, which supplies the necessary electrical current, and the starter solenoid, which engages the starting motor.

In diesel engines, the starting motor must be powerful enough to overcome the higher compression ratios. It often operates in tandem with glow plugs to preheat the combustion chamber, ensuring efficient starting in cold conditions. In gasoline engines, the starting motor must synchronize with the fuel injection system to ensure the engine starts smoothly without flooding.

The starting motor also interacts with the vehicle’s electronic control unit (ECU), which monitors the starting process and can adjust parameters such as the duration of the start signal to optimize performance and protect the motor from overheating.

In hybrid and electric vehicles, the starting motor may serve additional functions, such as regenerative braking or acting as a generator to recharge the battery during deceleration. Its integration with the vehicle’s complex electrical systems requires precise calibration to ensure seamless operation.

Overall, the Part 5585086 Starting Motor is a versatile and essential component that ensures the reliable startup of various engine systems, adapting to the specific requirements of each application ³.

Conclusion

The Cummins 5585086 Starting Motor is a critical component for the reliable and efficient operation of commercial truck engines. Its robust construction, advanced features, and compatibility with a wide range of Cummins engines make it a valuable asset for commercial truck operators. Regular maintenance and prompt troubleshooting of common issues can ensure the longevity and performance of this starting motor, contributing to the overall efficiency and reliability of the vehicle.