Why does crane hydraulic fluid turn milky?
Milky hydraulic fluid indicates water contamination, typically from condensation, seal leaks, or breached cooler lines mixing water with oil.
Milky or cloudy hydraulic fluid is a clear sign of water contamination in the system. Water can enter through several pathways: condensation from temperature fluctuations, worn cylinder seals allowing moisture penetration, damaged hydraulic cooler lines that leak coolant into the oil system, or improper storage of hydraulic fluid containers exposed to humidity.
Remember: "MILK = Moisture In Leaked Kontamination" (condensation, seals, coolers cause milky hydraulic fluid)
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