Just two days ago, "from summer to winter", the season quickly replaced, so that people have not had time to feel the cool autumn, they have to face the cold current with "winter air", as if telling us loudly: winter is really coming! In the coming of winter, we remember to add clothes in time, and our loaders should also be checked and maintained in time. The following points quickly learn with Xiaobian!
The first point: fuel oil circuit maintenance
● Normal selection of fuel
Diesel should be selected according to the local temperature and the cold filter point and freezing point of diesel.
● Maintain the fuel oil circuit
(1) Thoroughly clean the oil-water separator: the appearance is clean, check the sewage mark, discharge impurities in time, and replace those that cannot be cleaned; Clean the diesel tank: remove the sediment at the bottom; (2) Replace the nozzle with poor atomization; (3) Check the fuel injection pump with poor working condition to ensure normal operation.
The second point: the selection of engine oil
The appropriate oil should be selected according to the local temperature and the viscosity of the oil.
Third point: Choose high-quality antifreeze
● Two indicators to measure antifreeze
First, the freezing point, ordinary antifreeze can reach -40 ° C, and high-quality antifreeze can reach about -60 ° C; The second is the boiling point, the boiling point of antifreeze should reach at least 108℃.
● Anti-corrosion and anti-rust performance
Corrosion and rust resistance is also very important, which is directly related to the service life of the engine cooling system. Secondly, the anti-scaling property should be considered. More than 65% of the engine cooling system has scale and rust, which seriously affects the cooling function of the cooling system, so it is best to clean the scale and rust points in the radiator before replacing the antifreeze and then add the new antifreeze.
● Antifreeze replacement frequency
Under normal circumstances, antifreeze should be changed once a year, one year later, the indicators of antifreeze have not reached the original technical requirements.
● Do not mix antifreeze
Different types of antifreeze must not be mixed to avoid chemical reactions, precipitation or bubbles.
Fourth point: water pump inspection
Some equipment in the replacement of antifreeze after the oil increased emulsification phenomenon, may be due to the aging of the water seal of the pump failure, resulting in antifreeze through the water seal into the oil passage, and eventually reach the engine oil pan. Therefore, the engine oil level should be closely observed after replacing the antifreeze. If the oil level is found to be elevated, it should be stopped for inspection, and the method of replacing the water seal or pump assembly is generally used. After repair, under the no-load idling operation of the machine, use the new oil to take away the residual antifreeze that enters the engine lubrication system. Note: Shorten the interval time for the next oil replacement to ensure that the engine lubrication system plays a normal role.
Fifth: equipment three leakage maintenance
The phenomenon of thermal expansion and cold contraction is more obvious in the seals of hydraulic systems, gas routes, waterways, especially rubber O-rings, rectangular rings and other seals. When the temperature continues to be lower than 0 ° C, the machine will have oil leakage, air leakage and water leakage, especially when the temperature continues to be close to -10 ° C. Before the equipment enters the winter, it is necessary to carry out a comprehensive overhaul of the three leakage situations of the whole machine to eliminate the three leakage faults and hidden faults.
Sixth: Repair electrical equipment
Winter aging equipment more difficult to start failure, so before the seasonal maintenance to check and replace the aging electrical lines and components is an essential measure to reduce the difficulty of starting, but also need to thoroughly check and maintain the battery. Warm air equipment is essential for outdoor operations in winter, so before the severe winter should check the work of warm air equipment, repair warm air equipment.