Boston Hydraulic CAT Main Pump Assembly 339-0514 - For CAT320E & 329E Excavators - September 2, 2025

Boston Hydraulic CAT Main Pump Assembly 339-0514 - For CAT320E & CAT329E Excavators - September 2, 2025

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We are your direct source for the highest quality excavator components. Need a specific part? We offer custom manufacturing and development services for Caterpillar excavator parts and other heavy machinery components. Global shipping and OEM quality guaranteed.

The Heart of Your Excavator: CAT320E & CAT329E Hydraulic Pump

Your heavy equipment's performance hinges on its hydraulic system. At the core of this system lies the main hydraulic pump. For your Caterpillar CAT320E and Caterpillar CAT329E excavators, maintaining a robust hydraulic flow is essential for efficient operation. Our replacement for the 339-0514 hydraulic main pump assembly is an exact match, delivering the power and precision your machine demands. This Caterpillar Parts pump assembly is designed to restore your excavator's performance to like-new condition, ensuring smooth and responsive operation on any job site.

We specialize in providing high-quality heavy equipment components, including hydraulic system repair parts and excavator engine overhaul components. Our extensive catalog includes Sandvik Parts, Atlas Parts, and Epiroc Parts, making us a one-stop-shop for all your machinery needs.


Unmatched Quality and Performance

The 339-0514 hydraulic main pump for the CAT320E and CAT329E is manufactured to meet or exceed OEM specifications. Each pump assembly undergoes rigorous testing to ensure reliability and durability under the toughest conditions. With this Caterpillar hydraulic pump replacement, you can be confident in your machine’s ability to handle demanding tasks, from deep trenching to precise grading.

Our commitment to quality extends beyond Caterpillar Parts. We also provide genuine Cummins Parts for engine systems and Deutz Parts for various applications. For rock drilling and mining equipment, our Montabert Parts, Furukawa Parts, Komatsu Parts, Hitachi Parts, Volvo Parts, and Liebherr Parts are second to none. Our global logistics network ensures fast delivery of aftermarket excavator parts and genuine replacement parts to your location, minimizing downtime.

Understanding Key Components:

Hydraulic Cylinder (Гидравлический цилиндр, Гидроцилиндр) - The hydraulic cylinder converts fluid power into linear motion. Found on excavators and loaders, it's a core component for lifting and moving. A great example is the Sandvik DI550 drill rig cylinder, which raises and lowers the drill mast.

Gear Pump (Зубчатый насос, Шестерёнчатый насос) - This pump uses the meshing of gears to pump fluid. It is commonly used as a pilot pump or charge pump on many machines. You would find it on a Atlas Copco PowerROC D45 drilling rig gear pump, supplying pressure for auxiliary functions.


Your Trusted Partner in Heavy Machinery

Shandong Jufengyuan is a leading supplier of construction machinery parts and components. Our expertise spans a wide range of manufacturers, including Hyundai Parts, Metso Parts, Sany Parts, and XCMG Parts. We offer a comprehensive selection of excavator final drive, hydraulic motor, and hydraulic pump replacement parts, all at competitive, wholesale price. As a China supplier and factory direct source, we cut out the middleman, passing the savings directly to you.

Essential Part Glossary:

Excavator Swing Motor (Поворотный редуктор, Гидромотор поворота) - This motor drives the rotation of the excavator's superstructure. It's crucial for the machine's turning ability. For example, the Epiroc SmartROC T45 swing motor allows for precise rotation during drilling operations.

Valve Assembly (Гидравлический распределитель, Блок клапанов) - A valve assembly directs the flow of hydraulic fluid to various components. It's the central control unit for all hydraulic movements. A complex example is the Sandvik LH517 loader valve assembly that controls the lift and dump functions.


The Shandong Jufengyuan Advantage

Our business model is built on providing OEM quality parts and OEM quality excavator parts at factory direct prices. We understand the need for reliable components that can withstand the demands of heavy machinery parts. Our services include custom parts development, allowing us to source or manufacture hard-to-find components tailored to your specific needs. With a strong focus on excavator transmission parts, excavator undercarriage parts, and a variety of seal kit options, we are your trusted foreign trade export partner.

More Critical Components:

Track Shoe (Гусеничная лента, Трак) - The track shoe is the component of a track system that connects to the chain and makes contact with the ground. It provides traction for the machine. The Atlas Copco PowerROC T25 track shoe is a critical component for movement on rough terrain.

Final Drive (Бортовой редуктор, Конечная передача) - This is the last part of the drivetrain that connects the track motor to the sprocket. It's responsible for turning the tracks. The Sandvik DI600 final drive is a crucial component for propulsion.


Global Reach and Superior Service

From our base in Shandong, we serve clients worldwide, providing hydraulic pump replacement, excavator parts, and a vast array of heavy machinery parts. Our team is dedicated to helping you find the right component, whether it's the 339-0514 hydraulic pump for your CAT320E, or a more specialized part. Trust us for your excavator hydraulic system and engine parts needs.

Final Drive to Final Details:

Hydraulic Motor (Гидравлический мотор, Гидромотор) - A hydraulic motor converts fluid pressure into rotary motion. It is used to power various components like tracks and swing drives. The Atlas Copco FlexiROC D50 hydraulic motor is an example of a component that powers the rig's tracks.

Seal Kit (Комплект уплотнений, Ремкомплект) - A collection of seals used for repairing or rebuilding hydraulic components to prevent fluid leakage. The Epiroc PV-275 seal kit is essential for maintaining the hydraulic integrity of the drill rig.

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