High-Quality 71Q7-80010 Hyundai Cab by SPARKLING MACHINERY

   Have you ever faced these frustrations while operating an excavator? The machine jerks when you try to lift the boom and swing the upper structure at the same time; the bucket suddenly loses power when digging hard soil; and a single repair can cost tens of thousands of yuan? In fact, 90% of such problems stem from the Main Control Valve—it acts as the "motion control center" of the excavator. Every movement of the bucket, boom, and tracks relies on it to distribute power. However, many operators only master basic operations, without understanding its working principle, knowing how to choose a reliable model, or performing proper daily maintenance.

   This article will explain the main control valve in simple terms: from its structural principle and vulnerability risks to cost-performance comparisons of domestic and international brands, as well as daily maintenance tips. Even beginners can easily grasp this knowledge, helping you reduce repair costs and improve the smoothness of the machine's movements!

   Have you ever faced these frustrating issues with your excavator? Its tracks suddenly get stuck on-site, and you can’t push it forward; it creeps slowly up slopes while other machines zoom ahead; worst of all, repairing track-related components costs tens of thousands of yuan and shuts down work for days, forcing you to compensate for delayed schedules!

   Actually, the core that makes an excavator "move and climb" is the Track Drive Assembly—a "powerful leg" composed of the travel motor, reducer, and sprocket. But many operators only know how to drive the excavator, not how this assembly works, how to switch between high and low gears, or how to maintain it properly. This article explains this "key to movement" in plain language: from its structural principles and gear usage to cost-performance comparisons of domestic and international brands, as well as daily maintenance tips. Even beginners can easily learn, helping you save on repair costs and keep your machine running stronger!

   Have you ever watched a ballerina spin elegantly on her toes? But did you know that an excavator, weighing tens of tons, can also spin 360° smoothly, align precisely for dumping, and even "turn nimbly" in tight construction sites—just like a ballerina? However, if its swing system malfunctions, this heavy machine turns into a "clumsy giant": it spins slowly, shakes violently, takes an extra 2 minutes to unload a truck, and costs over $2,800 to repair!

   In fact, the core behind an excavator’s "elegant spins" is the combination of the swing reducer and swing motor—known together as the "swing system". Many operators only know how to use the excavator but don’t understand the system’s structure, how to switch between high and low gears, or how to maintain it properly. This article uses plain language to break down this "spin secret": from its structure and gear principles to brand comparisons and maintenance tips. Even beginners can easily learn, ensuring your excavator keeps spinning "smoothly and steadily"!

   This article focuses on the main hydraulic pump, a core component of excavators. It details the main pump’s role and significance in excavators, summarizes factors that pose threats to it, compares the cost-effectiveness of main pump types across domestic and foreign excavator brands, provides practical maintenance guidelines, and concludes with key insights—helping readers fully understand and effectively manage the excavator’s main hydraulic pump.