When a

When a #KOMATSU excavator exhibits slow or weak performance, inspecting the unloading valve is essential.
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When a KOMATSU excavator exhibits slow or weak performance, inspecting the unloading valve is essential. Positioned at the upper and lower ends of the main control valve, it regulates the highest pressure in the hydraulic system when the excavator is idle. During normal operation, it remains closed, allowing the main pressure to be maintained. However, if malfunctioning, it can disrupt hydraulic pressure, impacting excavator performance.
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