Loader six tips

[DIG-DOG]

First, select excellent antifreeze

There are two main goals to measure antifreeze: first, the freezing point, ordinary antifreeze can reach -40 ° C, and excellent antifreeze can reach -60 ° C; The second is the boiling point, the antifreeze should reach at least 108 ° C.
The function of corrosion prevention and rust prevention is also very important, which is directly related to the service life of the equipment cooling system.
Also consider scaling resistance. 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 points in the radiator before replacing the antifreeze and then participate in the antifreeze.

Under normal circumstances, antifreeze should be changed once a year, and after one year, the batch of antifreeze has not reached the original maintenance request.

Different types of antifreeze must not be mixed to prevent chemical reactions, deposition or bubbles.

2. Check the pump

Some equipment presents the appearance of antifreeze in the oil after replacing the antifreeze, which is because the aging of the water seal of the pump fails, forming the antifreeze into the smooth chamber through the water seal, and finally reaches the oil pan. Therefore, after replacing the antifreeze, the oil level should be investigated. If the oil level is found to be elevated, it should be stopped for viewing, usually replacing the water seal or pump assembly method is used.

After correction, it is necessary to take away the residual antifreeze into the engine smooth system with new oil under the no-load idle operation of the machine. Note: Shorten the gap time for replacing the oil next time to ensure the normal performance of the engine smooth system.

Third, the cooling system anti-corrosion filter element

The anti-corrosion filter element of the cooling system is rich in ion exchange resin, anti-corrosion agent, magnesium plate and other additives, which can be useful to protect the relevant parts. Ion exchange resins prevent the formation of scale. Corrosion inhibitor can form a corrosion protection film in the coolant jacket to prevent oxidation. Because the metal activity of magnesium is stronger than iron, the corrosive ions in the coolant mainly react with the magnesium plate, which is useful to prevent the iron from being corroded. Other anti-corrosion filters can also filter rust, scale and sediment.

The anti-corrosion filter element must be replaced with the antifreeze at the same time, and the anti-corrosion filter element should be replaced in the 1000th hour (engine working time) to ensure that the anti-corrosion filter element has a useful protection effect.

Four, fuel oil circuit protection

(1) Normal selection of fuel
Diesel should be selected according to the local temperature and the cold filter point and freezing point of diesel.
(2) Protect the fuel oil circuit
Completely clean oil-water separator: clean surface, check the sewage symbol, discharge impurities in time, and replace those that cannot be cleaned; Clean the diesel tank: remove and clean the sediment at the bottom; Replace the nozzle with poor atomization;
Check the fuel injection pump in poor working condition to ensure normal operation.

Five, smooth oil selection
The appropriate smooth oil should be selected according to the local temperature and the freezing point, pour point and viscosity of the smooth oil. Smooth oils with high freezing point cannot be used at low temperatures. On the contrary, in areas with higher temperatures, it is not necessary to use smooth oil with low freezing point. The freezing point and pour point are the targets of the low temperature fluidity of smooth oil, and the gender of the two is not standardized, but the measurement method is slightly different.
The freezing point and pouring point of the same smooth oil are not exactly the same, and the pouring point is usually 2-3 ° C higher than the freezing point.

Six, equipment three leakage maintenance

Thermal expansion and cold contraction in the hydraulic system, gas path, water seals, especially rubber O-rings, rectangular rings and other seals are more significant, when the temperature continues to be below 0 ° C, the machine will show oil leakage, leakage, water leakage, especially when the temperature continues to be close to -10 ° C. Before the equipment enters the winter, all the three leakage conditions of the whole machine should be repaired, and the three leakage faults and dangerous faults should be swept away.

7. Maintenance of electrical equipment

Aging equipment in the winter more difficult to start problems, so before the seasonal maintenance to view and replace the aging electrical lines and components is an essential action to reduce the start-up difficulties, but also need to fully view the maintenance battery. Warm air equipment is essential for winter field operations, so before the severe winter should check the operating status of warm air equipment, modify warm air equipment.

Eight, the gas storage tank check the water every day

If the gas tank does not release water for a few days, it will simply freeze, block the ventilation pipe, affect the brake system, and form a safety hazard. A good loaderoperator can clearly know how to maximize the use of the machine when driving the loader, reduce machine wear, reduce fuel consumption, and finish the job well and quickly.

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