The turbocharger is damaged. If the impeller shaft of the supercharger is moved, it is basically determined that the oil in the tank has been damaged. In addition, check the pipeline, press the air pump with foam water to check the booster rubber and outlet pipe, and check the belt buckle for air leakage.
Check whether the intercooler is damaged, press the air pump using the same method, carefully check whether the intercooler in front of the water tank of the self feeding flat mouth mixer has air leakage, adjust the valve, and regularly seek professional personnel to adjust the valve clearance according to the vehicle mileage.
To replace qualified urea and select vehicle urea, it is necessary to purchase qualified products, and do not easily replace the urea nozzle. Some drivers of self loading flat mouth mixer trucks intentionally use stones to modify the urea nozzle in order to save money, some drivers of self loading flat mouth mixer trucks even add water, and some drivers of self loading flat mouth mixer trucks directly pull out the plug without using urea.
Inspection items before operation
Before operation of the air system of the flat mouth mixer truck, check the lubricating oil level, keep the oil level between the upper and lower lines of the dipstick, and promptly raise the oil level line when it approaches the lower limit., The sealing ring of the oil cup port is intact.
Precautions for adding lubricating oil
① When refueling, it should be done without pressure. Before operation, dust and other debris around the flat mouth mixer should be cleaned to avoid entering the oil injector.
② The lubricating oil in the injector is ordinary diesel engine oil, and lubricating oil with a viscosity of 2.5-7 degrees or industrial 40 # oil can be used. The oil in the oil storage cup should be replaced in a timely manner. The capacity of the oil storage cup is calculated as 100ml, and it is appropriate to use it for 100 hours.
Regularly clean the filter element of the air flat mixer truck. Due to the dirty filter element, the air entering the compressor cylinder contains too much dust, which can accelerate the wear of the cylinder and piston ring, easily forming carbon deposits, and affecting the sealing performance of the gas valve; It can cause cylinder pulling and blowby, causing lubricating oil pollution, and affecting the lubrication effect; When gas is blown away, oil contamination can also occur. If the gap between the cylinder wall and the piston ring is too large, contaminated lubricating oil can enter the compression chamber. And forms an oil mist that contaminates the compressed air.