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yiqihang

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Joined on Oct 29, 2026

yiqihang

Oct 29

Troubleshooting Internal Weld Cracking and Oil Inter-mixing in Excavator Hydraulic Oil Tank Return Manifolds

3 min read

yiqihang

Oct 29

Diagnosing Rail Pressure Fluctuation Caused by Spool Wear in Diesel Common Rail Pressure Control Valves (PCV) of Used Excavators

#hardware

3 min read

yiqihang

Oct 29

Troubleshooting the Switching Logic of the Excavator Breaker Selector Valve for Single and Double-Acting Oil Flow

#equipment #hardware #robotics

3 min read

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