Global Sourcing for Heavy Machinery Parts

For mining operations in Brazil, construction projects in Russia, or agricultural developments in Australia, Growshine International provides high-quality alternative parts for Caterpillar, Komatsu, Volvo, and other major heavy equipment brands. Our Caterpillar 349D2 chassis harness 503-0793 offers a reliable, cost-effective solution for your machinery maintenance needs.

As a leading Chinese manufacturer and exporter of construction machinery parts, heavy truck components, agricultural equipment parts, and automotive accessories, we understand the critical importance of reliable components in demanding environments. Our products meet or exceed OEM specifications while providing significant cost savings.

Why Choose Growshine International Replacement Parts?

When your Caterpillar 349D2 excavator requires a chassis harness replacement, our 503-0793 wiring harness provides:

• Direct OEM replacement with perfect fit

• High-quality materials resistant to heat, oil, and abrasion

• Comprehensive compatibility with Caterpillar 349D2 models

• Significant cost savings compared to OEM parts

• Rigorous quality testing for durability and performance

Our expertise in engineering machinery parts ensures that you receive components that withstand the toughest operating conditions while maintaining optimal performance.

Complete Product Listings

Below is our comprehensive listing of available wiring harnesses and related components for Caterpillar excavators and other heavy machinery:

Heavy Equipment Parts Knowledge Base

Understanding your equipment is essential for proper maintenance. Here are some key components explained:

1. Chassis Harness (线束/Жгут проводов) - Electrical wiring system that connects various components throughout the equipment. Installed along the frame of machinery. Example: Caterpillar 349D2 Excavator Chassis Harness 503-0793.

2. Fuel Injection Nozzle (喷油嘴/Форсунка) - Precision component that atomizes fuel for efficient combustion in diesel engines. Installed in the cylinder head. Example: Komatsu PC200-7 Fuel Injection Nozzle.

3. Hydraulic Pump (液压泵/Гидравлический насос) - Generates flow and pressure for hydraulic systems. Installed in the hydraulic system. Example: John Deere 950G Hydraulic Pump.

4. Turbocharger (涡轮增压器/Турбокомпрессор) - Increases engine efficiency by forcing extra air into the combustion chamber. Installed on the exhaust manifold. Example: Volvo EC220D Turbocharger.

5. Track Roller (履带滚轮/Опорный каток) - Supports the weight of excavators and facilitates track movement. Installed on the undercarriage. Example: Caterpillar 320D Track Roller.

6. Swing Motor (回转马达/Поворотный двигатель) - Provides rotational movement for excavator upper structures. Installed between the upper and lower frames. Example: Hitachi ZX200 Swing Motor.

7. Final Drive (最终驱动/Конечный привод) - Reduces speed and increases torque for track movement. Installed on the track frame. Example: Komatsu PC300 Final Drive.

8. Control Valve (控制阀/Управляющий клапан) - Directs hydraulic fluid flow to various functions. Installed in the hydraulic system. Example: Caterpillar 330D Control Valve.

9. Cylinder Head (气缸盖/Головка блока цилиндров) - Seals the top of engine cylinders and contains valves and combustion chambers. Installed on the engine block. Example: Volvo D12 Engine Cylinder Head.

10. Radiator (散热器/Радиатор) - Cools engine coolant to maintain optimal operating temperature. Installed at the front of equipment. Example: John Deere 850 Dozer Radiator.

Troubleshooting Guide: Caterpillar 320D Excavator Electrical Issues

Problem: Intermittent power loss and dashboard warning lights on Caterpillar 320D excavator.

Diagnosis: After systematic testing, the issue was traced to a faulty chassis harness (306-8610) with damaged wires near the engine compartment due to heat exposure and vibration.

Solution: Replacement with Growshine International's 306-8610 chassis harness resolved all electrical issues. The new harness features improved heat-resistant insulation and reinforced connectors to prevent future failures.

Maintenance Tip: Regularly inspect wiring harnesses for abrasion, especially in high-temperature areas and where routing brings them into contact with other components.

About Growshine International

Growshine International is a leading Chinese exporter specializing in high-quality replacement parts for:

• Construction Machinery ( excavators, bulldozers, loaders)

• Heavy Trucks (diesel engines, transmission systems)

• Agricultural Equipment (tractors, combines, harvesters)

• Automotive Components (sensors, electrical components)

Our product range includes but is not limited to: hydraulic pumps, engine parts, undercarriage components, electrical systems, and specialized attachments for various machinery brands.

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