Caterpillar Excavator Arm Cylinder Seal Kit & Premium Aftermarket Parts for Optimal Performance - March 9, 2025
Enhance Your Caterpillar Excavator Performance with Genuine Quality Parts
Growshine International is your premier source for aftermarket Caterpillar excavator parts, ensuring your machinery operates at peak efficiency. We specialize in providing a comprehensive range of components designed to meet and exceed OEM standards. Our extensive inventory includes seal kits, valves, pumps, bearings, radiators, motors, and coolers, all crafted for durability and reliable performance. Explore our featured product lines below to find the perfect match for your Caterpillar equipment.
Pilot Valve Seal Kits
Boom Cylinder Seal Kits
Bucket Cylinder Seal Kits
Arm Cylinder Seal Kits
Caterpillar Excavator CAT 330B Arm Cylinder Seal Kit 1680759
Caterpillar Excavator E307B E307C E307V2 E307V2 Throttle Motor 132-7818
Main Pump Seal Kits
Engine and Cooling System Parts
Valves and Motors
Hydraulic Pump Parts
Bearings
Glossary of Engineering Machinery Parts
Pilot Valve Seal Kit (先导阀密封套件) - A set of seals used in the pilot valve of hydraulic systems. Located within the hydraulic control valve, it directs hydraulic fluid flow. Example: Caterpillar CAT312 Excavator, Part Number: 244-2228.
Boom Cylinder Seal Kit (动臂油缸密封套件) - Seals for the boom cylinder, which raises and lowers the excavator's boom. Located in the boom cylinder assembly. Example: Caterpillar CAT320 Excavator, Part Number: 438-6923.
Bucket Cylinder Seal Kit (铲斗油缸密封套件) - Seals for the bucket cylinder, controlling the bucket's digging and dumping action. Located in the bucket cylinder assembly. Example: Caterpillar CAT308 Excavator, Part Number: 533-1727.
Arm Cylinder Seal Kit (斗杆油缸密封套件) - Seals for the arm cylinder, controlling the excavator's arm (dipper stick) movement. Located in the arm cylinder assembly. Example: Caterpillar CAT325 Excavator, Part Number: 438-6925.
Main Pump Seal Kit (主液压泵密封套件) - Seals for the main hydraulic pump, the heart of the hydraulic system. Located within the main hydraulic pump. Example: Caterpillar 320D Excavator, Part Number: 438-5858.
Water Tank Radiator Core ASS'Y (水箱散热器芯体总成) - The core component of the radiator that cools the engine coolant. Located in the engine cooling system. Example: Caterpillar CAT308E CR, Part Number: 381-1451.
Solenoid Valve (电磁阀) - An electrically controlled valve used to control hydraulic fluid flow. Located within the hydraulic system, often in valve blocks. Example: Caterpillar E307B Excavator, Part Number: 247-5231.
Throttle Motor (节气门马达) - A motor that controls the engine throttle, regulating engine speed. Located on the engine's throttle linkage. Example: Caterpillar E370B Excavator, Part Number: 247-5229.
Hydraulic Pump Cylinder Block (液压泵缸体) - The rotating part of a hydraulic pump containing the pistons. Located inside the main hydraulic pump. Example: Caterpillar E320 Excavator, Part Number: 197-9032.
Hydraulic Oil Cooler (液压油散热器) - A radiator-like device that cools hydraulic oil. Located in the hydraulic system's cooling circuit. Example: Caterpillar 416E Backhoe Loader, Part Number: 299-6217.
Common Questions about Excavator Parts
Q: How often should I replace excavator seal kits? (挖掘机密封件多久更换一次？)
A: Seal kit replacement frequency depends on operating hours and conditions, but generally, inspecting and replacing every 2000-4000 hours is recommended to prevent leaks and maintain hydraulic system integrity.Q: What are the signs of a failing hydraulic pump in an excavator? (挖掘机液压泵故障的迹象是什么？)
A: Signs include slow or weak hydraulic functions, unusual noises from the pump, overheating hydraulic oil, and decreased overall machine performance.Q: Can I use aftermarket parts for my Caterpillar excavator? (我的卡特彼勒挖掘机可以使用副厂件吗？)
A: Yes, aftermarket parts, like those from Growshine International, can be a cost-effective solution, provided they meet quality standards. Ensure parts are sourced from reputable suppliers to guarantee compatibility and performance.
Growshine International: Your Trusted Partner for Engineering Machinery Parts
At Growshine International (格莳国际), we are dedicated to the import and export trade of high-quality Engineering Machinery Parts, Heavy Truck Parts, Agricultural Machinery Parts, and Auto Parts. We specialize in Caterpillar aftermarket parts, offering a wide range of products including seal kits, hydraulic components, engine parts, and more. Our commitment is to provide reliable, durable parts that ensure your machinery operates efficiently and minimizes downtime. Partner with us for all your aftermarket parts needs and experience unparalleled quality and service.
Troubleshooting Hydraulic Cylinder Leaks in Excavators
Problem: Hydraulic Cylinder External Leak (液压缸外部泄漏)
Description: External leaks from hydraulic cylinders are a common issue in excavators, often manifesting as oil seepage around the rod seal or cylinder body. This can lead to reduced hydraulic pressure, decreased efficiency, and environmental concerns.
Possible Causes:
Damaged or worn seals: The most frequent cause is wear and tear or damage to the cylinder seals due to age, contamination, or excessive pressure.
Scratched or damaged cylinder rod: Imperfections on the cylinder rod surface can damage seals and cause leaks.
Loose fittings or connections: Fittings and connections can loosen over time due to vibration, leading to oil leaks.
Cylinder body damage: Cracks or dents in the cylinder body, although less common, can also cause leaks.
Solution:
Inspection: Thoroughly inspect the cylinder for visible damage, loose fittings, and the source of the leak. Check the cylinder rod for scratches or dents.
Seal Replacement: If seals are worn or damaged, replace the entire seal kit. Ensure you use the correct seal kit for your specific cylinder model (e.g., Caterpillar CAT325D Boom Cylinder Seal Kit).
Rod Repair or Replacement: If the cylinder rod is damaged, it may need to be repaired by polishing or, in severe cases, replaced.
Tighten Fittings: Check and tighten all fittings and connections to ensure they are properly torqued. Replace any damaged fittings.
Cylinder Body Repair/Replacement: For cylinder body damage, professional repair or cylinder replacement might be necessary. Consult a hydraulic specialist.
Hydraulic System Check: After repair, check the entire hydraulic system for contamination and pressure irregularities that might have contributed to the seal failure.
Preventive Maintenance: Implement regular hydraulic system maintenance, including fluid changes, filter replacements, and seal inspections to prevent future leaks.
由广数供应链（CGSC）团队提供运营方案
