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I appreciate the help from Paul, he's prefessional and knows exactly what parts I need. My CAT has gone back to work without any problem.

—— Raphael

Got the final drive and its beautiful I think. We've have it assembled in our Hitachi ZX330 excavator, my machines goes to work again now. Many thanks

—— Kevin

Fast shippment, the arrived parts is good quality, our engine is repaired and is perfectly running at maximum power. Thank you, god bless.

—— Mohammed

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Company Blog

Common Excavator Faults and Solutions

[2017-12-29 13:37:05]

As a core piece of equipment in construction projects, excavator faults can affect both efficiency and safety. The following outlines common faults and solutions across six core modules: engine system, hydraulic system, electrical system, transmission system, working devices, and travel devices. 1. ... Read More

Functions of Various Relief Valves in Excavator Hydraulic Systems

[2025-03-07 14:05:05]

In an excavator’s hydraulic system, relief valves are critical control components. Their main function is to control and limit the system pressure to prevent overload. Depending on their installation position and function, the common types of relief valves and their roles are as follows: 1. Main ... Read More

Common Global Wheel Loader Brands and Their Representative Models

[2021-08-05 13:44:50]

Caterpillar Caterpillar 950 GC Suitable for medium-duty tasks, offering high performance and excellent fuel efficiency. Caterpillar 966M High-efficiency power and durability, suitable for heavy-duty work and complex environments. Caterpillar 980M An all-around model with high productivity and ... Read More

Common Excavator Sensors – Locations and Functions

[2023-05-04 17:36:04]

Sensor Name Installation Location Main Function Hydraulic Pressure Sensor Pump outlet, working circuit lines Monitors hydraulic pressure; controls pump output; supports load-sensing control Hydraulic Oil Temperature Sensor Hydraulic tank, return line Monitors oil temperature to prevent overheating ... Read More

Common Excavator Air Conditioning Failures and Repairs

[2023-05-11 16:34:37]

The air conditioning system of an excavator works on a similar principle to that of an automobile, consisting of a compressor, condenser, evaporator, expansion valve/capillary tube, blower, pipelines, and control circuits. Due to dusty environments, strong vibrations, and poor heat dissipation ... Read More

Common Volvo Excavator Throttle Faults and Remedies

[2022-10-19 16:44:36]

The throttle control on Volvo excavators usually involves mechanical throttle, electronic throttle (ECU/e-throttle), pedal or knob, sensors, and linkage. Faults may cause unstable engine idle, slow response, or inability to accelerate. 1. Slow Throttle Response or Engine RPM Not Increasing Possible ... Read More

Hitachi 470 Boom Slow Speed Fault Troubleshooting

[2021-08-04 17:17:29]

1. Fault Symptoms On-site, the operator reported that the boom sometimes moves fast and sometimes slow, showing random behavior. The issue is intermittent: sometimes the machine works a whole day without problem, while at other times it occurs four to five times within an hour. This fault affects ... Read More

Common Komatsu Excavator Display Screen Faults and Remedies

[2025-09-17 17:21:17]

1. Display Screen Not Turning On / Black Screen Possible Causes Power supply or fuse failure Loose connectors or wiring issues Faulty display screen Remedies Check fuse and power voltage Inspect connectors and wiring → clean or reconnect Replace the display module 2. Display Screen Flickering or ... Read More

Common Causes and Troubleshooting Methods for Insufficient Power in Construction Machinery

[2024-12-05 17:26:35]

Insufficient machine power is a common but high-level fault in construction machinery. As a mechanic, this fault can be challenging to diagnose accurately on-site. The simplest cause is often fuel circuit blockage or clogged filters. However, accurate diagnosis under on-site conditions requires ... Read More

Practical Advice for Construction Machinery Maintenance and Precision Assembly

[2021-05-17 17:31:07]

Many operators have started performing their own machinery maintenance, which is a positive trend. It shows that technicians are recognizing the value of technical work—because skilled maintenance is highly valuable. However, mastering maintenance is not something that can be learned in a few days. ... Read More

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