In mini dumpers (also known as small dump trucks), a type of specialized construction machinery, the chassis is not only the "skeleton" that carries the entire vehicle's load, but also the core platform connecting the power transmission system, suspension system, braking system, and steering system. Improper chassis maintenance will directly affect vehicle performance, stability, and safety. Therefore, chassis maintenance must be meticulous and systematic.

Crawler-type dump trucks are extremely common in small and medium-sized engineering projects. Their ease of use significantly improves work efficiency, but their frequent use also necessitates regular maintenance. One of the common problems is leakage in the hydraulic pump station. The hydraulic pump station is a core component of the crawler-type dump truck's hydraulic system, converting mechanical energy into hydraulic energy to drive various hydraulic actuators. When the hydraulic pump station leaks, it can lead to decreased equipment performance, energy waste, and even equipment failure. To ensure the normal operation of the equipment, operators must promptly identify and address hydraulic pump station leaks. This article will describe common methods for handling hydraulic pump station leaks from the perspective of a maintenance engineer.

Tracked dump trucks are important agricultural machinery, and the performance of their hydraulic system directly affects the overall working efficiency and service life of the machine. The hydraulic pump station, as the core component of the hydraulic system, is responsible for providing high-pressure hydraulic oil. Therefore, the maintenance and upkeep of the hydraulic pump station are crucial. This article, from the perspective of a tracked dump truck maintenance engineer, will detail the daily maintenance, inspection items, and solutions to common faults of the hydraulic pump station.

Wheeled dump trucks, as core equipment in engineering machinery transportation operations, operate in complex environments with significant load variations, placing extremely high demands on their tires and braking systems. These two systems not only affect vehicle work efficiency but also directly relate to driving safety and cost control. As maintenance engineers, it is essential to systematically master the daily inspection, maintenance procedures, and fault prevention measures for tires and braking systems to ensure stable and reliable vehicle operation.

An excavator quick coupler is a mechanism that allows excavators to quickly change work attachments (such as buckets, breakers, and grapples) without manually removing connecting pins. It improves equipment deployment efficiency, reduces manual intervention and downtime, but its complex structure and heavy load-bearing capacity mean that improper maintenance can lead to safety risks and high repair costs.

After daily operation, excavators and their attachments require maintenance and upkeep. This document discusses the maintenance and upkeep of excavator attachments such as hydraulic breakers and auger drills from the perspective of on-site operation and technical maintenance. This is not only fundamental to mechanical preservation but also directly relates to the efficiency, safety, and service life of the equipment. Based on engineering machinery technology, combined with practical operating experience and industry practices, this document provides an introduction to the maintenance and upkeep of excavator attachments such as hydraulic breakers and auger drills, hoping to serve as a practical maintenance guide for industry professionals.

Mini excavators are gradually gaining importance in the construction machinery industry, especially in urban construction, landscaping, and small-scale earthmoving projects, due to their small size and high flexibility. However, any mechanical equipment will face wear and tear and malfunctions during operation. Many users, after purchasing a mini excavator, neglect maintenance because they think it's small and simple in structure. Therefore, regular maintenance is crucial to effectively extend the machine's service life, improve operating efficiency, and reduce failure rates. This article will explain in detail, from the perspective of a mini excavator repair engineer, how to perform basic maintenance and upkeep after the mini excavator has been used in working conditions.

Large excavators (bucket capacity ≥ 20m³) operate for over 12 hours daily in high-intensity working conditions such as mining, quarrying, and earthmoving. The hydraulic system continuously withstands pressures exceeding 35MPa, electrical sensors respond at high frequencies, and mechanical components are subjected to impact loads for extended periods. Common faults after operation are concentrated in four core modules: the hydraulic system, power system, structural components, and electrical system. This article, based on mainstream manufacturer repair manuals and field cases, systematically outlines typical fault diagnosis paths and standardized repair procedures for the reference of frontline engineers.

Medium-sized excavators typically refer to hydraulic excavators with a total weight between 15 and 30 tons. They are the main equipment used in earthmoving projects, municipal construction, farmland irrigation, and small-scale mining. Medium-sized excavators are frequently used in engineering projects, so routine maintenance is crucial, especially the maintenance of the engine and hydraulic system, which are core components for the normal operation of the excavator. This article will discuss in detail how to properly maintain the engine and hydraulic oil of medium-sized excavators through practical maintenance cases, in order to extend the machine's service life and ensure its efficient operation.

The hydraulic system of a tracked excavator is the core nervous system for power transmission and motion execution. It is the "heart" of the tracked excavator, and its performance directly affects the equipment's working efficiency and lifespan. Statistics show that hydraulic system failures account for more than 60% of unplanned downtime for excavators, and 90% of these failures are due to improper maintenance. Normal system operation means that the boom, arm, swing, and travel mechanisms can reliably output force and speed. Improper maintenance of the hydraulic system will directly affect construction efficiency, increase the risk of failure, and in severe cases, may lead to damage to system components. Therefore, mastering the correct concepts and methods of system maintenance can ensure that the equipment operates efficiently, stably, and safely.