After confirming that the oil circuit is smooth and there is no air in the diesel engine supply system, remove the cover plate of the oil pump, move the control handle and pull the rod of the oil pump to see whether the rod is flexible and whether the plunger spring is broken. Under the condition that the pull rod of the automatic feeding concrete mixer is flexible and the plunger spring is not broken, the diesel engine can be started to run at medium speed for 10 minutes. If the fire is still broken, a copper hammer can be used to gently tap the big nut of the oil pump, and listen to the sound of the diesel engine while knocking. If the sound is abnormal, it means that the piston and push rod of the oil pump are jammed, and repair or replace them.
Remove the fuel injector assembly and rotate the crankshaft for several turns, that is, water is ejected, which indicates 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 automatic feeding mixer company. After the low-pressure oil flow is smooth, the air in the oil circuit can be removed by hand pressure pump, and the pump head vent screw can be opened until there are no bubbles, then the vent screw can be tightened.
The nozzle does not atomize, the plunger spring and spring seat of the oil pump are broken, stuck and does not work, or there is water in the diesel oil. Remove the nozzle assembly to check the opening pressure and atomization. If the nozzle assembly is normal, the user can load clean diesel into the pot and conduct the test by using the oil bypass method. Turn on the oil tank switch of the automatic feeding mixer, remove the oil inlet pipe of the oil pump, and check the oil flow. If the oil flow is fast, it means it is normal. If the oil flow is intermittent, check the oil circuit.
During the operation of the automatic feeding mixer, when the resistance is met, the fuel filling door will slip. This phenomenon is usually caused by improper operation of the driver, which not only increases fuel consumption but also damages the tire. Secondly, it is strictly forbidden to turn up the rear wheels. Due to the large digging force of the automatic feeding mixer, the driver is usually in the process of digging solid original soil and stone hill. If the operation is improper, the two rear wheels are prone to tilt off the ground.
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