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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 ... ادامه مطلب
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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 ... ادامه مطلب
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Many operators have started performing their own machinery maintenance, which is a positive trend. It shows that technicians are recognizing the value of technical work—because skilled maintenance is highly valuable. However, mastering maintenance is not something that can be learned in a few days. ... ادامه مطلب
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Insufficient machine power is a common but high-level fault in construction machinery. As a mechanic, this fault can be challenging to diagnose accurately on-site. The simplest cause is often fuel circuit blockage or clogged filters. However, accurate diagnosis under on-site conditions requires ... ادامه مطلب
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1. Display Screen Not Turning On / Black Screen Possible Causes Power supply or fuse failure Loose connectors or wiring issues Faulty display screen Remedies Check fuse and power voltage Inspect connectors and wiring → clean or reconnect Replace the display module 2. Display Screen Flickering or ... ادامه مطلب
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1. Fault Symptoms On-site, the operator reported that the boom sometimes moves fast and sometimes slow, showing random behavior. The issue is intermittent: sometimes the machine works a whole day without problem, while at other times it occurs four to five times within an hour. This fault affects ... ادامه مطلب
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The throttle control on Volvo excavators usually involves mechanical throttle, electronic throttle (ECU/e-throttle), pedal or knob, sensors, and linkage. Faults may cause unstable engine idle, slow response, or inability to accelerate. 1. Slow Throttle Response or Engine RPM Not Increasing Possible ... ادامه مطلب
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The air conditioning system of an excavator works on a similar principle to that of an automobile, consisting of a compressor, condenser, evaporator, expansion valve/capillary tube, blower, pipelines, and control circuits. Due to dusty environments, strong vibrations, and poor heat dissipation ... ادامه مطلب
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راهنمای جامع نگهداری برای لودر چرخدار Komatsu WA800-3 Hi-LIFT این راهنما برای کمک به کاربران در اطمینان از عملکرد صحیح و افزایش عمر مفید لودر چرخدار Komatsu WA800-3 Hi-LIFT از طریق نگهداری منظم و دقیق طراحی شده است. I. نگهداری روزانه تمیز کردن: لودر را روزانه تمیز کنید تا لکههای روغن، گل و لای و ... ادامه مطلب
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کاواساکی یک رهبر جهانی در تکنولوژی هیدرولیک است، به ویژه به خاطرپمپ های پیستون محوریاستفاده شده درباز و بستهسیستم های هیدرولیکی. سری های زیر نشان دهنده نسل ها و انواع مختلف پمپ های Kawasaki است. 1.سری K3V ✅ شرح: درسری K3Vیکپمپ پیستون محوری با جابجایی متغیربرای مدارهای باز طراحی شده است. از یکصفحه ی ... ادامه مطلب
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