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Home » News » FAQ

Buying Used Construction Machinery Guide

This page provides practical answers and experience-based guidance for buying used construction machinery, including excavator condition checks, pricing considerations, export process, and common questions from overseas buyers.

FAQ Category

FAQ

  • Q What are the advantages of used Caterpillar excavators compared with Komatsu?

    A
    Advantages: Stronger power, more solid structure, suitable for harsh working conditions such as mines, strong versatility of parts, and slightly higher residual value than Komatsu.

  • Q What are the core characteristics of used Komatsu excavators?

    A
     Core characteristics: Strong durability, stable engine, reliable hydraulic system, suitable for heavy load operation, moderate maintenance cost, and high residual value.

  • Q Is there a big gap in operating efficiency between a used excavator and a new one?

    A
     For a used excavator in good condition (within 5000 hours), the operating efficiency is not much different from that of a new one, and the cost performance is higher; the efficiency of an old machine will decrease significantly.

  • Q How to quickly identify a used excavator with a tampered hour meter?

    A
    Check the wear degree of the seat, joystick and foot pedal. If the wear is severe but the working hours are low, it is likely that the hour meter has been tampered with; the original data of the engine ECU can be checked for verification.

  • Q What are the obvious characteristics of a "accident machine" used excavator?

    A
     Characteristics: Welding marks on the frame, boom and arm, disassembly marks on core components, large-area replacement of hydraulic pipelines, and inconsistency between working hours and wear.

  • Q How often does the track of a used excavator need to be replaced?

    A
     Under normal operation, the service life of the track is 5000-8000 hours. It needs to be replaced in time if it is severely worn (tooth wear, cracks).

  • Q Is the maintenance cost of the hydraulic pump of a used excavator high?

    A
    Yes. The hydraulic pump is a core component, and the maintenance cost is usually several thousand to tens of thousands of yuan. It is necessary to focus on testing the state of the hydraulic pump when purchasing.

  • Q What is the service life of the battery of a used excavator?

    A
    The service life of a used battery is usually 1-3 years. If the battery is bulging or leaking, it needs to be replaced immediately to avoid affecting the startup of the equipment.

  • Q Can the frame deformation of a used excavator be repaired?

    A
     Minor deformation can be repaired by correction, while severe deformation cannot be completely repaired, which will affect the stability of the equipment and is not recommended to buy.

  • Q What is the reason for the stuck joystick of a used excavator?

    A
    It is mostly due to blocked control valve, deteriorated hydraulic oil, or aging pull wire. It is necessary to replace the hydraulic oil, clean the control valve, and replace the pull wire if necessary.

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