New John Deere 4390085 Hitachi OEM Excavator Valve Relief EX2500
Viewed： times
- Product parameters
New John Deere 4390085 Hitachi OEM Excavator Valve Relief for EX2500
Introducing the brand new, genuine John Deere 4390085 Hitachi OEM Excavator Valve Relief, specifically designed for the EX2500 excavator model. This high-quality valve relief is a crucial component for maintaining the optimal performance and safety of your heavy machinery.
At SWAFLY MACHINERY CO., LIMITED, we specialize in providing a wide range of excavator parts and mining equipment parts in China. Founded in 2009, we have over 15 years of experience in supplying quality-trusted machinery components.
Product Details
- Product Name: Excavator Valve Relief
- Brand: John Deere / Hitachi OEM
- Part Number: 4390085
- Equipment Type: Excavator
- Compatible Model: Hitachi EX2500
- Condition: New
SWAFLY MACHINERY CO., LIMITED is your trusted source for machinery engines, hydraulic pumps, and travel final motor drives. We also offer agricultural tractor machinery engines with KUBOTA and Yanmar brands.
Engineering Machinery Component Definitions
-
Hydraulic Pump (液压泵)
EN: A hydraulic pump converts mechanical power into hydraulic power. In excavators, it's typically located within the hydraulic system, driven by the engine. Example: Hitachi EX200-5 Main Hydraulic Pump, Part Number: 9147289.
CN: 液压泵将机械能转化为液压能。在挖掘机中，它通常位于液压系统内，由发动机驱动。例如：日立EX200-5主液压泵，零件号：9147289。
-
Travel Final Drive (行走终传动)
EN: The travel final drive, also known as a track motor or wheel motor, is responsible for propelling the excavator. It's located in the undercarriage, connected to the tracks or wheels. Example: Komatsu PC200-8 Travel Motor Assembly (Left), Part Number: 20Y-27-00300.
CN: 行走终传动，也称为履带马达或轮毂马达，负责驱动挖掘机。它位于底盘中，连接到履带或车轮。例如：小松PC200-8行走马达总成（左），零件号：20Y-27-00300。
-
Relief Valve (溢流阀)
EN: A relief valve is a safety device used to control or limit the pressure in a hydraulic system. It prevents pressure buildup beyond a preset limit. In excavators, they are found within the hydraulic valve blocks. Example: Caterpillar 320D Main Control Valve Relief Valve, Part Number: 246-6757.
CN: 溢流阀是一种用于控制或限制液压系统压力的安全装置。它防止压力超过预设限制。在挖掘机中，它们位于液压阀块内。例如：卡特彼勒320D主控制阀溢流阀，零件号：246-6757。
-
Pilot Pump (先导泵)
EN: The pilot pump provides hydraulic pressure to operate the control valves in an excavator. It's usually a smaller pump mounted alongside the main hydraulic pump. Example: Kobelco SK200-8 Pilot Pump Assembly, Part Number: YN10V00035F1.
CN: 先导泵为挖掘机中的控制阀提供液压压力。它通常是一个安装在主液压泵旁边的小型泵。例如：神钢SK200-8先导泵总成，零件号：YN10V00035F1。
-
Swing Motor (回转马达)
EN: The swing motor is a hydraulic motor that allows the excavator's upper structure to rotate. It's located at the base of the upper structure, connected to the swing gearbox. Example: Volvo EC210B Swing Motor, Part Number: VOE14527583.
CN: 回转马达是一种液压马达，用于使挖掘机的上部结构旋转。它位于上部结构的底部，连接到回转齿轮箱。例如：沃尔沃EC210B回转马达，零件号：VOE14527583。
-
Gear Pump (齿轮泵)
EN: A gear pump is a type of positive displacement pump that uses meshing gears to pump fluid. They are commonly used in excavator hydraulic systems for various functions. Example: Universal Gear Pump, Part Number: GP-1-11 (Generic example).
CN: 齿轮泵是一种正排量泵，它使用啮合的齿轮来泵送流体。它们通常用于挖掘机液压系统中，用于各种功能。例如：通用齿轮泵，零件号：GP-1-11（通用示例）。
-
Axial Piston Pump (轴向柱塞泵)
EN: An axial piston pump is a type of hydraulic pump that uses reciprocating pistons to generate flow. They are often used as the main hydraulic pump in excavators due to their high efficiency and pressure capabilities. Example: Kawasaki K3V Series Axial Piston Pump, Part Number: K3V112DT-9R24 (Series example).
CN: 轴向柱塞泵是一种使用往复式活塞产生流量的液压泵。由于其高效率和压力能力，它们通常用作挖掘机中的主液压泵。例如：川崎K3V系列轴向柱塞泵，零件号：K3V112DT-9R24（系列示例）。
-
Radial Piston Motor (径向柱塞马达)
EN: A radial piston motor is a type of hydraulic motor where the pistons are arranged radially around a central shaft. They are often used in travel final drives for their high torque at low speeds. Example: Rexroth MCR Series Radial Piston Motor, Part Number: MCR05A340F61Z310A (Series example).
CN: 径向柱塞马达是一种液压马达，其活塞径向排列在中心轴周围。它们通常用于行走终传动，因为它们在低速时具有高扭矩。例如：力士乐MCR系列径向柱塞马达，零件号：MCR05A340F61Z310A（系列示例）。
-
Orbit Motor (摆线马达)
EN: An orbit motor, also known as a gerotor motor, is a type of hydraulic motor that produces rotary motion. They are commonly used in various auxiliary functions in excavators. Example: Eaton Char-Lynn Orbit Motor, Part Number: 101-1007-009 (Series example).
CN: 摆线马达，也称为内啮合齿轮马达，是一种产生旋转运动的液压马达。它们通常用于挖掘机中的各种辅助功能。例如：伊顿Char-Lynn摆线马达，零件号：101-1007-009（系列示例）。
-
Control Valve (控制阀)
EN: A control valve directs the flow of hydraulic fluid to different actuators in the excavator, such as cylinders and motors. It is typically located in the main hydraulic valve block. Example: Hyundai R220LC-9 Main Control Valve, Part Number: 31Q6-40300.
CN: 控制阀将液压油流导向挖掘机中的不同执行器，如油缸和马达。它通常位于主液压阀块中。例如：现代R220LC-9主控制阀，零件号：31Q6-40300。
Common Questions about Excavator Parts
- Q: Where can I buy reliable excavator hydraulic pumps? A: SWAFLY MACHINERY CO., LIMITED supplies quality-trusted hydraulic pumps for various excavator models. Contact us for more information.
- Q: How do I know if my excavator's travel final drive needs replacement? A: Common signs include reduced power when moving, unusual noises from the undercarriage, or hydraulic leaks near the drive motor. Consult a professional for diagnosis.
- Q: Do you offer parts for different brands of excavators? A: Yes, SWAFLY MACHINERY CO., LIMITED specializes in excavator parts for a wide range of brands, including Hitachi, John Deere, and many others. We also offer engines from KUBOTA and Yanmar for agricultural tractors.
Our Business
SWAFLY MACHINERY CO., LIMITED specializes in excavator parts and mining equipment parts in China since 2009. With over 15 years of experience, we supply a quality-trusted full range of machinery engines, hydraulic pumps, and travel final motor drives. We also provide agricultural tractor machinery engines with KUBOTA and Yanmar brands.
We leverage our resources and technical expertise to offer cost-effective OEM or high-quality aftermarket products. Our services include maintenance workshops, mechanical dismantling, engine and hydraulic system assembly maintenance and regeneration, and complete machine and parts renewal.
We are committed to providing a full range of aftermarket services for our global customers.
Engine Troubleshooting Tip
Problem: Engine Overheating
Description: The engine temperature gauge is consistently high, and you might notice steam coming from the radiator or engine compartment. This indicates the engine is overheating, which can cause serious damage if not addressed promptly.
Possible Causes:
- Low coolant level
- Leaking radiator or hoses
- Faulty thermostat
- Damaged water pump
- Clogged radiator fins
- Loose or broken fan belt
Troubleshooting Steps:
- Safely stop the machine: Turn off the engine and allow it to cool down before attempting any inspection.
- Check coolant level: Once the engine is cool, carefully check the coolant level in the radiator and coolant reservoir. Add coolant if necessary.
- Inspect for leaks: Examine the radiator, hoses, and connections for any signs of leaks.
- Check the fan belt: Ensure the fan belt is in good condition and properly tensioned.
- Visually inspect the radiator: Check for any obstructions or damage to the radiator fins. Clean them carefully if needed.
- Seek professional help: If the problem persists after checking these basic items, it's crucial to consult a qualified mechanic for further diagnosis and repair, as it could indicate a more serious issue like a faulty thermostat or water pump.
Visit our website for more information:
Mobile/WeChat/WhatsApp: +86 13570162348
Email: sales05@swaflyexcavator.cn
Copy product link
Long press the picture to save/share
inquiry
Inquiry form:
Consultation content:
You haven't added any products yet
Joined successfully
inquiry
Inquiry form:
Consultation content:
You haven't added any products yet
Joined successfully
