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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

Discussion on Excavator Slewing Bearing Seals and Grease Leakage

[2024-08-21 14:14:27]

Many operators get worried when their excavator slewing bearing leaks grease, fearing that the machine might be faulty. For example, someone reported that after 700 working hours and just three grease injections, oil started leaking. Actually, don’t panic — this is not a major problem. What you ... Read More

Construction Machinery Maintenance: Repair Processes for Precision Components and Selection of Oils

[2025-02-07 14:10:43]

Recently, many machine owners have begun performing their own repairs. This is a positive trend—it shows awareness that technical skills are valuable assets. However, repair techniques cannot be mastered in just a few days. They require both effort and aptitude: some people are quick learners, while ... Read More

A Method for Evaluating the Performance of Excavator Swing Motors

[2025-05-15 14:08:17]

The swing motor is an indispensable component of a hydraulic excavator. In fact, without a swing motor, an excavator cannot function properly 【excluding the semi-swing homemade excavators built with scrapped light cars around Tianjin more than twenty years ago】. In other words, as long as the ... Read More

Construction Machinery Maintenance [VI] Selection of Housing Components and Bearing Parts

[2025-02-28 14:05:00]

In the maintenance of construction machinery, housing components and bearing parts are fundamental elements that directly affect the strength, rigidity, transmission accuracy, and service life of the equipment. Correct selection and application of these parts are essential for ensuring machine ... Read More

Excavator Final Drive

[2025-06-19 16:02:04]

Final Drive for Excavators: Key Component for Efficient Movement The final drive is a crucial component in excavators and other construction machinery, providing the power necessary for the machine’s movement. It plays a key role in transmitting power from the engine through the drivetrain to the ... Read More

Fault in the travel suction valve on the side causing the excavator to veer off course

[2024-08-16 12:08:38]

If the travel suction valve on the side of the excavator that is veering off course is damaged, and the spring inside it softens or breaks, it will directly cause a drop in oil pressure in the travel main valve. This fault will result in insufficient driving force from the travel motor to maintain ... Read More

Uneven track tension

[2017-10-13 12:09:57]

During the excavator’s movement, if there is a difference in the track tension between the left and right sides, it can also lead to veering off course. Solution to the issue: Add grease to the side with looser track tension to ensure it matches the tension on the other side. Read More

Decline in Main pump performance

[2018-10-18 12:11:11]

When the excavator is moving in a straight line, if the plunger of the pump flow regulator in one of the pumps becomes stuck, or if there is severe wear or internal leakage that causes the travel motor speed to decrease, it can lead to the excavator veering off course. Solution to the issue: ... Read More

Insufficient output pressure from the travel proportional valve

[2025-03-07 12:12:39]

The travel proportional valve is a critical component in the excavator’s control system. It adjusts the output control oil pressure based on the travel of the operator’s joystick, which in turn controls the movement of the main control valve and the speed of the working devices. If the pressure from ... Read More

Five Key Points for Excavator Travel

[2025-02-07 12:13:51]

When operating an excavator, it is important to follow these five key points to ensure the stability and safety of the travel system: ► Maintain Normal Equipment Operation Regularly check the pressure of the travel proportional valve and ensure it stays within the standard range. Clean the valve ... Read More

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