Dangerous Mistake Cooling a Hot Truck Wheel ???????? - Video

This truck driver is pouring water onto an extremely hot wheel hub, likely caused by dragging brakes or a failing bearing. While the steam looks cool, rapid cooling like this can crack the metal! Pouring cold water on an overheating truck wheel is a huge mistake because this rapid temperature change causes thermal shock, which can easily crack the brake drum and lead to catastrophic failure.

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