1. What are the contents of front end wheel loader maintenance in winter?
After the beginning of autumn comes winter, which is the maintenance period approaching winter. Many generator sets, marine engine loaders, etc. Many problems such as antifreeze entering the engine oil and radiator leakage often occur during winter maintenance. In addition, before entering the severe winter, the corresponding diesel and lubricating oil need to be replaced. Therefore, you must be fully prepared before winter maintenance. 1. Choose high-quality antifreeze. There are two main indicators for measuring antifreeze: first, freezing point, ordinary antifreeze can reach 40℃, while high-quality antifreeze can reach about 60℃; second, boiling point, antifreeze must reach at least 108℃.
Also consider anti-scaling properties. More than 65% of equipment cooling systems have scale and rust, which seriously affects the cooling function of the cooling system. Therefore, before adding antifreeze, it is best to clean the scale and rust spots in the radiator. Under normal circumstances, antifreeze should be changed once a year. After one year, the antifreeze batch standard cannot meet the original care requirements. Different types of antifreeze should not be mixed to avoid chemical reactions, precipitation or bubbles. 2. Water pump inspection: Some equipment has antifreeze in the oil after replacing the antifreeze. This is due to the aging and failure of the water seal of the water pump, causing the antifreeze to enter the lubrication chamber through the water seal and finally reach the oil pan.
2. The agriculture small loader cannot start in winter
The variable speed pump is leaking and the variable speed pump is faulty. When the car is cold, there is air in the pump, and the suction power of the pump becomes smaller, so the car needs to run for a few minutes. The temperature rises and the air in the pump is removed, and the car will be normal. If the car runs normally, the transmission pump is faulty and you only need to replace the transmission pump. The transmission oil inlet or oil return filter is clogged. When the filter element is clogged, the viscosity of the engine oil in the cold engine state is relatively high, and the pressure in the gearbox cannot meet the driving requirements. As the temperature increases, the viscosity of the transmission oil decreases and the pressure increases, allowing the car to run. Not only does the oil need to be changed, but the filter element also needs to be removed for cleaning or replacement.
3. What should I do if the brakes of the loader freeze?
It's time to change the brake fluid. a. Possible cause analysis. The brake system lacks necessary maintenance, there are too many impurities in the brake master cylinder, poor sealing, vacuum booster pump failure, the brake oil is dirty or air-locked after mixing several types of brake oil and heated, the brake master cylinder or wheel cylinder leaks oil, The gas tank or pipeline interface is leaking; b. Machine parts are malfunctioning due to improper operation; c. Due to severe overloading, the vehicle's motion inertia increases under the action of gravity acceleration, which directly leads to braking failure. 2. Treatment method a. Control the direction according to the road conditions and vehicle speed, disengage the high speed gear, blow out the oil quickly at the same time, and change the high speed gear to the low speed gear. In addition, the handbrake should be used with low gear, but be careful not to tighten it too tightly or pull it too slowly. If it is pulled too tightly, the brake disc will easily "lock", which will easily damage the transmission components and lose the braking ability; if it is pulled too slowly, the brake disc will be worn and ablated, and the braking function will be lost. b. Utilize the friction and collision of rigid parts such as car bumpers and compartments with natural roadside obstacles (rocks, trees or soil slopes) to achieve the purpose of forced parking and avoidance, and to reduce accident losses as much as possible.
4. What should I do if the hydraulic oil of the loader freezes?
The brake system must be melted, released and replaced with new brake fluid of the same type, and the air in the brake system must be bled out. Brake fluid generally won't freeze because it absorbs moisture. One is that it may be frozen by water, resulting in poor oil quality and poor low-temperature fluidity. Will not freeze into ice oil. What grade of oil do you use? The higher the number, the greater the viscosity and the worse the fluidity. You can choose a smaller oil number.

5. Why does the forklift engine freeze and crack if the water is drained?
Due to the water release, the vehicle will not freeze and crack. It is possible that the water has not been drained cleanly, so it is best to deal with it in time. This situation can only be caused by the water not being drained cleanly. What causes the forklift engine to freeze and crack when discharging water? There are the following reasons: a. Only the water in the water tank is drained when draining, and the drain valve on the engine is not released; b. The drain valve is not draining smoothly, causing part of the water to not drain out; c. The weather temperature is too low, and the water temperature is too low when draining. It was already very low and the water was freezing before it was drained out.

6. What causes the crane hydraulic air conditioner to freeze?
Icing in the internal unit of the air conditioner can be divided into external causes and internal causes. The external reasons are: A. The room temperature was too low at that time. B. The evaporator is too dirty. Be careful to check the back of the evaporator in public places. C. The fan speed is too slow. D. The connecting pipe is folded. The internal reasons are as follows: a. The mainstream is small and the system pressure is low. b. System clogging mainly occurs in filters and capillaries. Extended data Air conditioner icing is a common condition of air conditioners in winter. Air conditioner icing mainly occurs when the outdoor unit of the air conditioner freezes, resulting in difficulty in heating or malfunction of the air conditioner.

7. What causes water to enter the loader oil?
a. The cylinder head or cylinder liner is frozen and cracked due to low temperature, causing water to penetrate into the engine oil, which is troublesome. If there is no water or antifreeze in winter, many parts will freeze and crack, including the cylinder gasket. b. Under normal use, there will be corrosion holes in the cylinder gasket or cylinder liner. These are 3210 horsepower diesel engines with intercoolers. If the core of the intercooler cracks, water will flow from the air intake to the engine oil. Now you can check it like this. Whether the engine is used in a low-temperature area or the problem is caused by freezing of the cooling water, you must first check the intercooler, remove it and test it, and then move the cylinder head to check the cylinder gasket, cylinder liner, and cylinder head. Problems should be analyzed step by step from small to large.

8. What causes the outdoor heating unit to freeze in winter?
The lower the outdoor temperature and the higher the relative humidity, the more frequently the air conditioner defrosts. When the outdoor temperature is lower than 5°C, the evaporation temperature of the outdoor heat exchanger will be lower than 0°C. At this time, the moisture in the air will form frost on the surface of the outdoor condenser. As the operating time increases, the thickness of the frost will increase. The larger the value, the lower the heat transfer capacity of the heat exchanger and the lower the heating effect. The greater the relative humidity outdoors, the thicker the frost.