裝載機http://www.jmkey.cn/散熱器中的冷卻液上漂浮著一層油液，但檢查油底殼機油時未發現有水，用水從冷卻液上沾取少許油液，通過聞氣味和觀察顏色判定為機油，由此排除了液力傳動油散熱器漏油的可能性。那么導致這種問題的原因是什么呢？
Loaders radiator coolant floating layer of oil, but have not found the time to check the oil sump water, the water picks up a little oil from the coolant through smell the smell and observe the color of the oil is determined by this ruled out the possibility of leakage of hydraulic transmission oil cooler. So the cause of this problem, what is it?
　　
裝載機柴油機的風扇和水泵是同軸轉動，為了消除水泵的影響，拆除了風扇膠帶，啟動柴油機，從水箱蓋孔發現冷卻液劇烈翻滾，因漏油來自機油散熱器，說明故障部位必然出在氣缸蓋或氣缸套部分。此時可以拆下某一缸的噴油器，使其氣缸與大氣相通，啟動柴油機并觀察，若此時散熱器里的冷卻液不再劇烈翻滾，則可判定該缸即為故障缸。
Loader diesel engine fan and water pump are coaxial rotation, in order to eliminate the influence of the pump, remove the fan belt, start the engine, radiator cap from the coolant hole found dramatic tumble, because the oil spill from the oil cooler, indicating the fault lies in the inevitable parts part of the cylinder head or cylinder liner. At this point you can remove a cylinder injector to the cylinder and the atmosphere, start the engine and to observe, if at this time the radiator coolant no longer violent roll, it is judged that the cylinder is the failed cylinder.
　
由于裝載機http://www.jmkey.cn/的柴油機采用的是PT型燃油泵，當拆下其一個噴油器后，其他各缸將不能正常工作，因此也就無法進行故障判斷。為此，找到一個報廢的該機型的噴油器，先拆下其油杯、柱塞和挺桿等，并將其進油口的回油口堵住，然后將該噴油器體作為專用工具安裝到氣缸蓋上，這樣，既可使低壓供油系統暢通，又能使氣缸內氣體與大氣相通。
Because diesel is used loaders PT type fuel pump, remove it when a fuel injector, all other cylinders will not work and, therefore, can not fail to judge. To do this, find a scrap of the models injector, first remove its oil cup plunger and tappet etc., and the inlet of the oil return port is blocked, then the injector body as special tools to install the cylinder head, so that it can enable the low-pressure fuel system flow, but also make the cylinder gas atmosphere.