装载机的散热风扇过热是怎么回事？

装载机http://www.sdyongbaojixie.com/的散热系统的功用，就是把发动机系统、传动系统和液压系统等所产生的工作热量，及时有效地散发到周围空气中，使发动机系统、传动系统和液压系统处于可靠和有效的工作热状态。
Function loader cooling system, is to work the heat engine system, transmission and hydraulic systems produced by timely and effective dissemination to the surrounding air, the engine system, transmission and hydraulic system is reliable and effective working heat state.

装载机http://www.sdyongbaojixie.com/的散热系统由水散热器和油散热器组成其中水散热器和油散热器紧靠，且布置为两层，水散热器为管片式，油散热器为板翅式，三分之二布置为传动油散热器，三分之一布置为液压油散热器，散热系统通过1个吹风式风扇冷却，冷却风先扫过发动机等部件，然后通过风扇、水散热器、油散热器流到周围环境中，完成热交换。
Loader by water cooling system radiator and oil cooler where water composition  radiator and oil radiators close, and arranged for the two water radiator pipe piece, plate-fin oil radiator, three the two arranged to transmission oil cooler, arranged third hydraulic oil radiator, cooling system via a blower fan cooling, the cooling air to the engine and other parts of sweeps, and then through the fan, water radiator, oil cooler flow to the surrounding environment,the completion of the heat exchanger.