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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 ... قراءة المزيد
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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 ... قراءة المزيد
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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. ... قراءة المزيد
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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 ... قراءة المزيد
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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 ... قراءة المزيد
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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 ... قراءة المزيد
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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 ... قراءة المزيد
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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 ... قراءة المزيد
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دليل صيانة شامل لجهاز كوماتسو WA800-3 Hi-LIFT Wheel Loader تم تصميم هذا الدليل لمساعدة المستخدمين على ضمان التشغيل السليم و تمديد عمر خدمة محمل العجلات Komatsu WA800-3 Hi-LIFT من خلال الصيانة المنتظمة والمفصلة. صيانة يومية التنظيف: نظف جهاز التحميل يومياً لإزالة بقع الزيت والطين والحطام، وأبقي المعد... قراءة المزيد
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كاواساكي هي شركة رائدة عالميًا في مجال التكنولوجيا الهيدروليكية، تشتهر بشكل خاص بـ مضخات المكبس المحوري المستخدمة في دوائر هيدروليكية مفتوحة الحلقة ومغلقة الحلقة. تمثل السلسلة التالية أجيالًا وأنواعًا مختلفة من مضخات كاواساكي. 1. سلسلة K3V ✅ الوصف: تعتبر سلسلة K3V مضخة مكبس محوري متغيرة الإزاحة مصمم... قراءة المزيد
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