Fluid thickening: Low temperatures increase the viscosity of hydraulic oil, making it harder for the oil to reach the pump.This fluid thickening can cause buildups in the system that restrict flow, but can also further reduce the ability of the system to dissipate heat. Fluid oxidization: Extreme heat can cause hydraulic fluid to oxidize and thicken.Fluid thinning: Heat can cause hydraulic fluids to thin, preventing lubrication and making the fluid more likely to leak.Some of these challenges include the following symptoms. Hydraulic systems that run too hot or too cold can cause severe problems over time. A milky appearance in hydraulic fluid can help you identify water contamination. Water can degrade hydraulic components over time through oxidation and freeze damage. Water contamination is also a common problem in hydraulic systems, often caused by system leaks or condensation due to temperature changes. Aeration also creates a sound when the pump is running, which sounds like knocking. Usually, loose connections or leaks in the system cause this issue. Aeration: Aeration occurs when air enters the pump cavity from an outside source.You can identify this problem if your hydraulic pump is making a whining noise. ![]()
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