【Tips】Maintenance and maintenance of winter loaders

1
Select high quality antifreeze
Measuring the antifreeze mainly has two indicators: one is the freezing point, the ordinary antifreeze can reach -40 ° C, and high quality antifreeze can reach -60 ° C; the second is the boiling point, the antifreeze should be at least 108 ° C.
Anti-corrosion rust performance is also important, which is directly related to the service life of the equipment cooling system. It is also necessary to consider preventing deterioration. More than 65% of the equipment cooling system has scale and rust, which seriously affects the heat dissipation function of the cooling system, so it is best to clean the scale and rust in the heat sink before replacing the antifreeze, and then add antifreeze.
Under normal circumstances, the antifreeze should be changed every year, and the indicators of antifreeze have not reached the original nursing requirements after one year.
Different models of antifreeze must not be mixed to avoid chemical reactions, precipitation or generating air bubbles.
  2
Pump check
Some devices have antifreeze in the oil after replacing antifreeze, which is due to the expiration of the water pump seal, resulting in an antifreeze into the lubrication chamber through water seal, and finally reaches the oil housing. Therefore, the oil level should be closely observed after replacing antifreeze. It is found that the oil level is increased, should be closed, and the replacement water pump water seal or water pump assembly method is generally used.
After the repair, the machine is idling, with a novel oil to take away the antifreeze of the engine lubrication system, pay attention: Shorten the gap time of the next replacement oil to ensure that the engine lubrication system is working properly.
3
Fuel road maintenance
Oil is used normally. To select diesel according to the local temperature and the cold filter point and the agglutination of diesel.
Maintain the fuel oil. Thoroughly cleaning the oil separator: clean, check the sewage sign, timely emissions impurities, to replace the cleanliness; cleaning the diesel box: Clean the precipitate at the bottom; replace the adverse injector; The feed oil pump ensures normal work.
4
Lubricating oil selection
Suitable lubricants should be selected from the local temperature, combined with lubricants, pour point and viscosity.
High lubricating oil with high agglutination cannot be used at low temperatures. Conversely, there is no need to use low lubricants with low temperature. The agglutions and pour points are the indicators of lubricating oil low temperature fluidity, and the two have no protocol, but the measurement method is slightly different. The coagulation and pour point of the same lubricant is not exactly the same, and the general pour point is highly bonded 2-3 ° C.
5
Equipment three-leak repair
The thermal expansion and shrinkage in the seal of hydraulic system, gas path, waterway, especially the rubber type O-ring, the rectangular ring, etc., when the temperature is less than 0 ° C, the machine will oil , Leakage, leakage, especially when the temperature is close to -10 ° C. In the winter, it is necessary to fully repair the three leaks of the whole machine before entering winter, eliminating three -list failure and hazard failure.
6
Maintenance electrical equipment
Winter aging devices have occurred more difficult faults. Therefore, check and replace aging electrical lines and components in the predecessored season are an indispensable initiative to reduce difficulties, but also thoroughly inspect the maintenance battery.
Warm air equipment is essential in winter outdoor work, so he should check the warm air equipment work before severe winter, and repair the heater.