Hitachi Kobelco Komatsu heater blower fan motor 503716-1710 502725-3282 TD3219SK-250 56500-40180 7I-6603 KHR2845
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High-Quality Heater Blower Fan Motor for Hitachi, Kobelco, and Komatsu Excavators
Looking for a reliable heater blower fan motor for your heavy machinery? SWAFLY MACHINERY CO., LIMITED offers a premium aftermarket solution compatible with various Hitachi, Kobelco, and Komatsu excavator models. Our high-quality heater blower fan motor ensures optimal performance and operator comfort in demanding work environments.
This robust heater blower fan motor is designed to meet or exceed OEM specifications. It is a direct replacement for the following part numbers:
Hitachi: 503716-1710
Kobelco: 502725-3282
Generic: TD3219SK-250
Komatsu: 56500-40180
Caterpillar (CAT): 7I-6603
Generic: KHR2845
SWAFLY MACHINERY CO., LIMITED specializes in providing top-tier excavator parts and mining equipment parts in China. Founded in 2009, we have over 15 years of experience in supplying quality-trusted machinery engines, hydraulic pumps, and travel final motor drives. We also offer agricultural tractor machinery engines from renowned brands like KUBOTA and Yanmar.
Our company leverages extensive resources and incorporates the technology and experience of leading engine manufacturers. We operate advanced maintenance workshops and have established platforms for mechanical dismantling, engine, and hydraulic system assembly maintenance and regeneration. This allows us to offer comprehensive machine and parts renewal services. We are committed to developing cost-effective OEM and high-quality aftermarket products, providing a full spectrum of aftermarket services to our global clientele.
Understanding Key Components: Hydraulic Pumps and Travel Final Motor Drives
Here are some common terms related to hydraulic pumps and travel final motor drives used in excavators and other construction machinery:
Hydraulic Pump Explanations:
Main Hydraulic Pump (主液压泵): The primary source of hydraulic power for all the hydraulic functions of the excavator, such as the boom, arm, bucket, and travel motors.
Installation Location: Typically mounted directly to the engine.
Example: Komatsu PC200-8 Main Pump, Part Name: Hydraulic Pump Assembly, Part No.: 708-1L-00401Pilot Pump (先导泵): A smaller pump that provides hydraulic pressure to operate the control valves.
Installation Location: Usually attached to the main hydraulic pump or the engine.
Example: Hitachi ZX200-3 Pilot Pump, Part Name: Gear Pump, Part No.: 4647157Gear Pump (齿轮泵): A type of positive displacement pump that uses the meshing of gears to pump fluid.
Installation Location: Can be used as a main pump or auxiliary pump in various locations.
Example: Generic Gear Pump, Part Name: Hydraulic Gear Pump, Part No.: VG2-20F-1A2-20Axial Piston Pump (轴向柱塞泵): A type of positive displacement pump where pistons move parallel to the axis of the cylinder block. Commonly used as the main hydraulic pump in excavators.
Installation Location: Typically mounted to the engine.
Example: Kobelco SK200-8 Main Pump, Part Name: Hydraulic Pump, Part No.: YN10V00052F1Swash Plate (斜盘): A component in axial piston pumps that controls the stroke length of the pistons, thereby regulating the flow rate of the hydraulic fluid.
Installation Location: Inside the main hydraulic pump.
Example: Caterpillar 320D Main Pump Swash Plate, Part Name: Swash Plate Assembly, Part No.: 244-2268
Travel Final Motor Drive Explanations:
Travel Motor (行走马达): A hydraulic motor that converts hydraulic power into rotational motion to drive the excavator's tracks or wheels.
Installation Location: Mounted inside the undercarriage frame, connected to the final drive.
Example: Komatsu PC200-8 Travel Motor, Part Name: Travel Motor Assembly, Part No.: 708-1W-00312Final Drive (终传动): A reduction gearbox connected to the travel motor that increases torque and reduces speed to drive the tracks or wheels.
Installation Location: Attached to the travel motor within the undercarriage.
Example: Hitachi ZX200-3 Final Drive, Part Name: Travel Gearbox Assembly, Part No.: 9247487Planetary Gear Set (行星齿轮组): A gear system within the final drive that provides the necessary speed reduction and torque multiplication.
Installation Location: Inside the final drive housing.
Example: Kobelco SK200-8 Final Drive Planetary Gear Set, Part Name: Planetary Carrier Assembly, Part No.: MA5800A316Track Roller (托链轮/支重轮): Wheels that support the weight of the excavator and allow the tracks to move smoothly. While not part of the motor drive itself, they are essential for travel.
Installation Location: Along the undercarriage frame.
Example: Caterpillar 320D Track Roller, Part Name: Bottom Roller, Part No.: 177-7867Sprocket (驱动轮): A toothed wheel that engages with the track links to propel the excavator. It is driven by the final drive.
Installation Location: At the front or rear of the undercarriage, connected to the final drive.
Example: Komatsu PC200-8 Sprocket, Part Name: Segment Group, Part No.: 20Y-27-15321
Common Questions About Excavator Parts and Mining Equipment Parts
What are the common causes of hydraulic pump failure in excavators? Common causes include contamination of hydraulic fluid, overheating, cavitation due to low fluid levels or restricted intake, and wear and tear of internal components.
How often should I replace the hydraulic filters in my excavator? It is generally recommended to replace hydraulic filters every 250 to 500 hours of operation, but always refer to the manufacturer's service manual for specific recommendations.
What are the signs of a failing travel motor in an excavator? Signs can include slow or weak movement in one or both tracks, unusual noises coming from the final drive area, and hydraulic leaks around the motor or final drive.
Our Business: Your Trusted Source for Excavator Parts and Mining Equipment Parts
SWAFLY MACHINERY CO., LIMITED is your reliable partner for high-quality excavator parts and mining equipment parts in China. Since our establishment in 2009, we have been dedicated to providing a comprehensive range of machinery engines, hydraulic pumps, and travel final motor drives. Our extensive experience and commitment to quality ensure that you receive parts you can trust. We also specialize in agricultural tractor machinery engines, including KUBOTA and Yanmar brands. Whether you need OEM or high-quality aftermarket solutions, we are here to support your machinery needs with cost-effective products and exceptional service.
Common Excavator Engine Problem and Solution
Engine Overheating
Problem: The excavator engine temperature rises above the normal operating range, potentially leading to damage.
Possible Causes and Solutions:
Low Coolant Level: Check the coolant level in the radiator and expansion tank. Add the recommended type of coolant if the level is low. Inspect for leaks in hoses, radiator, and water pump.
Faulty Thermostat: The thermostat regulates the flow of coolant. If it's stuck closed, coolant cannot circulate properly. Replace the thermostat with a new one of the correct temperature rating.
Clogged Radiator: Dust, debris, and mud can accumulate on the radiator fins, reducing its ability to dissipate heat. Clean the radiator fins with compressed air or water. Ensure proper airflow around the radiator.
Water Pump Failure: The water pump circulates coolant through the engine. If it's not functioning correctly, the engine can overheat. Inspect the water pump for leaks or unusual noises. Replace if necessary.
Loose or Broken Fan Belt: The fan belt drives the cooling fan. A loose or broken belt will prevent the fan from cooling the radiator effectively. Inspect the fan belt for wear and tear and adjust or replace it as needed.
Mobile/WeChat/WhatsApp: +86 13570162348
Email: sales05@swaflyexcavator.cn
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Hitachi Kobelco Komatsu heater blower fan motor 503716-1710 502725-3282 TD3219SK-250 56500-40180 7I-6603 KHR2845
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