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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. ... Read More
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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 ... Read More
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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 ... Read More
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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 ... Read More
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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 ... Read More
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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 ... Read More
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Comprehensive Maintenance Guide for Komatsu WA800-3 Hi-LIFT Wheel Loader This guide is designed to help users ensure the proper operation and extend the service life of the Komatsu WA800-3 Hi-LIFT wheel loader through regular and detailed maintenance. I. Daily Maintenance Cleaning: Clean the loader ... Read More
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Kawasaki is a global leader in hydraulic technology, particularly known for its axial piston pumps used in open-loop and closed-loop hydraulic systems. The following series represent different generations and types of Kawasaki pumps. 1. K3V Series ✅ Description: The K3V series is a variable ... Read More
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Sensor Name Installation Location Main Function Hydraulic Pressure Sensor Pump outlet, working circuit lines Monitors hydraulic pressure; controls pump output; supports load-sensing control Hydraulic Oil Temperature Sensor Hydraulic tank, return line Monitors oil temperature to prevent overheating ... Read More
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