The primary reason for warming up the hydraulic oil before commencing heavy excavation is to reduce the oil's viscosity and ensure proper lubrication of hydraulic components, thereby minimizing wear and preventing damage to the hydraulic system. Hydraulic oil becomes thicker and more viscous at lower temperatures. High viscosity makes it harder for the oil to flow through the system, particularly through narrow passages in valves, pumps, and cylinders. When the oil is cold and viscous, the hydraulic pump has to work harder to draw the oil,....
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