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Originally, this was considered the most basic mechanical common sense, something even a vocational school teacher would dismiss. But in reality, bolt loosening is one of the most frequent repair issues in machinery. If ignored, it often leads to loss of fastening strength in machine parts, and in ... Read More
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In construction machinery repair, replacing rolling bearings is a frequent task. However, given today’s uneven quality in the spare parts market, the reliability of construction machinery is often questionable, and after repair, the quality can be even worse. This involves both part quality issues ... Read More
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1. Torque Converter Issues Typical symptoms: Engine runs normally under load, but the machine feels weak or does not move. Key checks: Is the torque converter output shaft rotating? Does the engine produce black smoke (indicating overload)? Do tires/tracks slip (is torque actually being transmitted)... Read More
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No matter if you are a substitute operator, a main operator, or especially an apprentice, you must have done greasing work before! If someone claims they’ve never done it, nobody will hire you—unless it’s your own family’s machine. In that case, your father would have already kicked you for being ... Read More
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Nowadays, few operators really dive deep into studying repair techniques. The few senior repair experts usually keep quiet — and I understand why. No one’s skills fall from the sky; they’re earned through years of effort and practice. It’s like this: you can copy others, but you don’t want others ... Read More
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Let’s continue talking about the importance of machine inspection and maintenance. In fact, the user manuals provided by manufacturers only meet the minimum operating requirements. If, during use, you are still reluctant to spend a little money on inspection and maintenance, it’s truly disappointing... Read More
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This will be the last post in this series, but I want to talk about a few cases where improper maintenance and care actually caused failures, so that friends in this field can avoid the traps and reduce trouble in the future. Once again, I must emphasize: Always pay attention to machine maintenance ... Read More
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The Spring Festival is coming. According to local custom, work usually doesn’t resume until around the fifteenth day of the first lunar month. Whether in the north or south, nearly all construction machinery will be parked for a period of time. Here, I’d like to share some practical precautions for ... Read More
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Hydraulic hoses are common, medium-life consumables on construction machinery. Their lifespan depends on: Product quality Hydraulic oil cleanliness Installation method (length, bend radius, avoiding twists) Working environment (temperature extremes: high heat, cold regions, etc.) Choosing hoses ... Read More
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Insufficient machine power generally falls into two categories: Engine power deficiency Overload in the work system or transmission Sometimes both conditions occur simultaneously. To diagnose accurately, machine performance parameters must be known. I. Engine Power Deficiency Main indicators: Engine ... Read More
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