Amazonian CAT Rotary Drilling Rig Hydraulic Component Sourcing Guide for September 27, 2025

Welcome to Growshine International, your trusted partner in sourcing high-quality, cost-effective replacement parts for CAT Caterpillar heavy machinery. As a leading import and export trader of engineering machinery accessories, heavy-duty truck parts, agricultural machinery parts, and auto parts, we specialize in connecting global customers with reliable Chinese manufacturing alternatives. Our extensive catalog covers essential components for popular models like the CAT 345D, 349D, 330D, 336D, 320D, and 374D excavators and rotary drilling rigs. We understand the critical need for minimizing downtime and maximizing the lifespan of your heavy equipment, which is why we provide meticulously organized product data to simplify your procurement process. We offer excellent service in providing durable construction equipment spares and reliable engine overhaul kits.

Essential CAT Structural and Undercarriage Components

The foundation of any robust machine lies in its structural components. We offer key parts such as fuel tanks and hydraulic tanks for the CAT 345D C13 and 349D models. Furthermore, maintaining the mobility and stability of your excavator is vital. Our range includes complete undercarriage parts for various CAT models. For instance, the lower frame (履带梁 - Track Beam), part number 344-6888 (3446888), is available for the CAT 345D and 349D. Proper track adjustment is secured by components like the track adjuster cylinder (涨紧油缸) for the CAT 330D and 336D, part number 9Q-5689 (9Q5689). We also supply drive sprockets (驱动轮), idler wheels (引导轮), and track chains (链轨), ensuring your equipment stays operational. We are experts in cost-effective track link assemblies and heavy equipment track components.

CAT Engine & Maintenance Parts for Peak Performance

Engine health is paramount for heavy equipment performance. We supply critical engine parts for the CAT C-series engines, including fuel injectors (喷油器) for the CAT C6.4 320D (10R-7675 / 10R7675) and C13 345D (249-0713 / 2490713). Engine parts such as water pumps (水泵) for the C13 (10R-2129 / 10R2129) and C6.6 320D (322-9662 / 485-4895) are readily available. Routine maintenance is simplified with our range of high-quality maintenance consumables, including engine oil filters (机油滤芯) like 1R-0739 (1R0739) for CAT 320D and hydraulic oil filters (液压油滤芯) like 093-7521 (0937521). Trust Growshine International for premium filtration systems and reliable diesel engine components.

Part Noun Explanations:
1. Final Drive (行走减速机 / Final drive) - Финальный привод: A reduction gearbox installed on the wheel or track of Caterpillar 323D Excavator / Гусеничный экскаватор Caterpillar 323D that provides the final torque multiplication before the wheel/track.
2. Hydraulic Pump (液压泵 / Hydraulic Pump) - Гидравлический насос: Installed on the engine flywheel or PTO on a Caterpillar 345D Excavator / Гусеничный экскаватор Caterpillar 345D , it converts mechanical power into hydraulic energy (flow and pressure).
3. Engine Control Module (ECM) (发动机电脑板 / Engine ECM) - Блок управления двигателем (ЭБУ): A critical electronic component found in the cab or on the engine of a Caterpillar 320D Excavator / Гусеничный экскаватор Caterpillar 320D that controls engine functions like fuel delivery and timing.
4. Idler Wheel (引导轮 / Idler) - Направляющее колесо: A non-driven wheel component located at the front of the track frame on a Caterpillar 312D Excavator / Гусеничный экскаватор Caterpillar 312D , guiding the track and maintaining tension.
5. Sprocket (驱动轮 / Drive Sprocket) - Ведущая звездочка: The toothed wheel component found at the rear of the track frame on a Caterpillar 330D Excavator / Гусеничный экскаватор Caterpillar 330D that engages the track chain to propel the machine.
6. Turbocharger (涡轮增压器 / Turbocharger) - Турбокомпрессор: Installed on the exhaust manifold of a Caterpillar C9 Engine (336D) / Двигатель Caterpillar C9 (336D) , it increases engine power by forcing extra air into the combustion chamber.
7. Condenser (冷凝器 / Condenser) - Конденсатор: A heat exchanger component of the A/C system, typically located in front of the radiator on a Caterpillar 345D Excavator / Гусеничный экскаватор Caterpillar 345D , that cools and liquefies refrigerant.
8. Slewing Bearing (回转支承 / Slewing Bearing) - Опорно-поворотное устройство: A large-diameter bearing located between the upper structure and undercarriage on a Caterpillar 330C Excavator / Гусеничный экскаватор Caterpillar 330C that allows the upper structure to rotate.
9. Cylinder Head (缸盖 / Cylinder Head) - Головка блока цилиндров: Located on top of the engine block on a Caterpillar C13 Engine (345D) / Двигатель Caterpillar C13 (345D) , it forms the combustion chamber and houses the valves and injectors.
10. Alternator (发电机 / Alternator) - Генератор: An electrical generator component driven by a belt from the engine on a Caterpillar C15 Engine (374D) / Двигатель Caterpillar C15 (374D) that charges the battery and powers the electrical system.

Advanced Hydraulic and Cooling Solutions

The hydraulic system is the powerhouse of the excavator and rotary drilling rig. We supply high-demand components such as main pumps (主泵) and piston pumps (柱塞泵). For the CAT 345D C13, we offer the hydraulic pump, part number 434-8189 (4348189). Slewing motors (回转马达) and final drive motors (行走马达) are also a core part of our offering. For example, the slewing motor for the CAT 330D has part numbers 334-9973 (3349973) and 334-9979 (3349979). Maintaining optimal operating temperature is crucial, which is why we provide various cooling system parts, including hydraulic oil coolers (液压油散热器) for the CAT 330D (245-9360 / 2459360) and water tanks/radiators (水箱) for the CAT 325D (353-5549 / 3535549). We are committed to sourcing reliable construction equipment spare parts and aftermarket hydraulic components.

Cab Comfort, Electricals, and Controls

Operator comfort and control are essential. We offer a full range of cabin interior parts (内饰件), glass (玻璃), and air conditioning parts (空调类), including A/C compressors (空调压缩机) and evaporator assemblies (蒸发器总成). The CAT 320D C6.4 A/C compressor is available under part number 259-7244 (2597244). Critical electrical components, such as the machine ECM (电脑板) for the CAT 323D (366-8821 / 3668821) and display monitors (显示器) like 450-0714 (4500714) for the CAT 330D/336D, are also stocked. High-quality sensors (传感器), like the fuel pressure sensor (燃油压力传感器) 266-0136 (2660136) for the CAT 320D, ensure accurate machine monitoring. We focus on providing excavator cabin parts and OEM quality electrical components.

Troubleshooting Tip: A common issue on the CAT 320D Excavator is the boom drop or drift. A frequent cause is internal leakage in the Boom Cylinder (动臂油缸) or wear on the Main Control Valve (主控阀) spool seals. Solution: First, check the main control valve's boom section relief valve setting. If the pressure is correct, inspect and potentially replace the boom cylinder seals (e.g., 320D Boom Seal Kit) or reseal/replace the Main Control Valve. Regular hydraulic oil and filter changes are key preventative measures against control valve wear.

At Growshine International, we are dedicated to providing global clients with reliable machinery replacement parts and export-grade heavy equipment components. Our service extends beyond just sales; we also offer global parts logistics solutions and technical support for parts procurement. We source and supply a vast array of earthmoving equipment spares, including high-performance hydraulic cylinders and durable track system parts. Our main business is focused on the import and export trade of engineering machinery components, heavy truck accessories, agricultural equipment parts, and automotive spares. Visit our websites at ar-excel.com, ampleresiliencesoft.com, cgsc66.com, cgsc-equip.com, and en.xinsheng2024.com to learn more about how Growshine can support your business with affordable machinery filters and dependable excavator sensors. We aim to be your primary supplier for aftermarket CAT parts and cost-effective engine repair solutions. We are your partner for Chinese-made industrial spare parts and global machinery components sourcing.

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