First, make sure that the oil circuit from the feeding flat mouth mixer truck is unblocked. After there is no air in the diesel engine supply system of the feeding flat mouth mixer truck, remove the oil pump cover plate, move the operating handle, and toggle the oil pump pull rod to see whether the pull rod is flexible and whether the plunger spring is broken. When the pull rod of the self feeding flat mouth mixer truck is flexible and the plunger spring is not broken, the diesel engine can be started to run at a medium speed for 10 minutes. In case of fire failure, a copper hammer can be used to gently tap the large nut of the oil transfer pump and listen to the sound of the diesel engine while knocking. If the sound is abnormal, it indicates that the piston and push rod of the oil transfer pump are stuck for repair or replacement.

拆下噴油器總成，轉(zhuǎn)動曲軸數(shù)圈，即有水噴出，說明缸蓋，缸體有裂紋或砂眼，遇到這種情況時(shí)，可向用戶解釋或向自上料平口攪拌車公司反映。低壓油流暢通后，可用手壓泵排除油路中的空氣，打開泵頭放氣螺釘，直到?jīng)]有氣泡時(shí)，方可上緊放氣螺釘。

Remove the fuel injector assembly and rotate the crankshaft for several turns, that is, water is ejected, indicating that there are cracks or sand holes in the cylinder head and cylinder block. In this case, you can explain to the user or report to the feeding flat mouth mixer company. After the low-pressure oil flow is unblocked, the air in the oil circuit can be discharged by hand pump, and the bleed screw of the pump head can be opened until there are no bubbles, and then the bleed screw can be tightened.

油嘴不霧化，油泵柱塞彈簧和彈簧座斷裂，卡死不工作，或是柴油內(nèi)有水。拆下油嘴總成檢查開啟壓力和霧化，如果油嘴總成正常，可讓用戶用干凈柴油裝入壺中用油路旁接法進(jìn)行試驗(yàn)。打開自上料平口攪拌車油箱開關(guān)，拆下輸油泵進(jìn)油管，看油流情況，如果油流很快，說明正常，如果油流時(shí)斷時(shí)續(xù)查油路。

The nozzle is not atomized, the plunger spring and spring seat of the oil pump are broken, stuck and inoperative, or there is water in the diesel oil. Remove the oil nozzle assembly and check the opening pressure and atomization. If the oil nozzle assembly is normal, the user can put clean diesel into the pot and test with the oil circuit side connection method. Turn on the oil tank switch of the self feeding flat mouth mixer truck, remove the oil inlet pipe of the oil transfer pump, and check the oil flow. If the oil flow is fast, it indicates that it is normal. If the oil flow is intermittent, check the oil circuit.