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The hydraulic system of a used excavator accounts for more than 30% of the machine's value. A selection mistake can force a 300,000-yuan machine to incur another 80,000 yuan in repair costs within six months. This article starts with the three major components — hydraulic pumps, motors, and multi-way valves — and provides selection parameters, price ranges, common faults, and maintenance intervals, plus five high-frequency FAQs to help buyers and owners avoid refurbished parts, mismatc

There is no unified formula for appraising used construction machinery, but three main lines—machine condition, working hours, and brand value retention—determine 80% of the price. This article provides reference price ranges and depreciation coefficients for mainstream models such as 20-ton excavators, 5-ton loaders, and 160-horsepower bulldozers. It also explains the impact of major repair records, hydraulic system condition, and export destinations on quotations, helping both buyers

When buying a used excavator, bulldozer, or loader, an inspection report is an unavoidable part of the process. Drawing on frontline inspection experience, this article breaks down the core items in an inspection report—hydraulic system pressure data, engine cylinder pressure and exhaust smoke color, undercarriage wear rates, and structural weld seams—and provides reference price ranges for major used equipment hubs in Shandong, Jiangsu, Guangdong, and other regions in China. It also i

How to choose a used construction machinery engine assembly without falling into pitfalls? Based on frontline transaction scenarios, this article outlines the compatibility relationships of common models such as Cummins, Isuzu, and Yanmar, provides price ranges from 30,000 to 180,000 RMB and regional market differences, and summarizes practical key points in four areas: test running, number verification, parts inspection, and after-sales service. It is suitable for users and export tra

Hydraulic pumps, motors, and multi-way valves are the three most expensive components on a used excavator. Based on real repair scenarios, this article outlines selection criteria, common faults, OEM parts price ranges, and maintenance points for mainstream hydraulic components from Kawasaki, Rexroth, Toshiba, and others. It also provides acceptance recommendations for hydraulic systems when exporting used construction machinery. Suitable for machine owners, repair technicians, and par

This article focuses on used construction machinery price evaluation methods, combining current export market conditions and the domestic replacement market to explain in detail how the three core variables—machine condition, working hours, and brand retention rate—affect the pricing of used excavators, used bulldozers, used loaders, and mining trucks. It provides reference price ranges, inspection points, regional differences, and export selection recommendations, along with a FAQ sec

When buying a used excavator, used bulldozer, or used loader, an inspection report is an unavoidable part of the process. This article breaks down the core items and judgment criteria of inspection reports, explains how to assess the engine, hydraulic system, undercarriage, swing mechanism, and electrical system, provides on-site inspection points such as chassis number verification, cold and hot engine re-inspection, oil sampling, and function testing, and includes common price ranges

A practical guide to selecting and maintaining engine assemblies for construction machinery. It outlines the compatibility relationships of mainstream models such as Cummins, Isuzu, and Yanmar, provides price ranges for used dismantled and remanufactured assemblies (30,000–250,000 RMB), key points for inspection reports, maintenance precautions, and export customs requirements. Combined with actual usage scenarios of used excavators, used loaders, and mining trucks, it explains how to