Where is the drain switch of Chang 'an Benben mini water tank? I want to change the antifreeze.

1. Before changing the coolant, you must wait 10 minutes after the vehicle is turned off. After driving, the coolant temperature is very high and it is easy to burn.

2. Conduct an all-round inspection of the vehicle: check the pipeline for signs of leakage and cracks, and check the five-way water pipe. If this part of the coolant leaks, replace the water pipe or re-fix the connection according to the situation.

3. Lift the vehicle with a jack.

4. Tighten the screws of the bottom shell of the water tank with a wrench, and connect the old liquid with the waste basin.

5. Cover the expansion box cover with a thick towel, slowly loosen it until the air pressure is exhausted, and then completely remove the box cover. Use a compressed air spray gun or a thick towel to pressurize the water inlet of the expansion tank and remove it from the engine block as much as possible.

6. Add softened water and idle for 5 minutes, so that the inside of the cooling circulation system can be fully cleaned.

7. Add new antifreeze to the upper limit of water level.

8. Run at idle speed for 5 minutes, then observe the scale line of antifreeze tank and fill it up.

Extended data:

Solutions of heating temperature in winter;

1. Replace the cooling system without coolant.

Coolant, commonly known as antifreeze, comes from this, and its principle is different from that of household air conditioning heating. Automobile warm air circulation is to connect a pipeline in parallel in the small circulation pipeline of engine coolant, which is connected with a warm air water tank, and the blower blows the warm air water tank to generate warm air, which is how the air conditioning warm air comes from. The lack of coolant in the cooling system is the most common and easily solved fault phenomenon that causes the warm air not to be hot.

When designing the engine cooling system, engineers will give priority to engine heat dissipation, and then the warm air can work normally. When the coolant is insufficient, the coolant will circulate in the engine first. At this time, there is no "water" in the warm air circulation pipeline, and most of the warm air tank is gas. At this time, the air conditioning warm air is naturally not hot.

2. Clean up the blockage of the warm air tank.

The structure of the warm air water tank is actually a miniature version of the radiator of the engine water tank, and there are many small cooling pipes in it, which are as easy to block as the radiator of the water tank. After the inside of the warm air water tank is blocked, the coolant flows slowly, the flow rate becomes smaller, and the heat is insufficient, so the air conditioner warm air is naturally not hot.

The blockage of the warm air water tank has no effect on the heat dissipation of the engine (because they are connected in parallel). The reason for this situation is that the coolant contains too much scale, impurities, flocs and so on. These impurities are caused by careless maintenance. When adding coolant, replace them with water or other brands of coolant.

In addition, once the warm air water tank is found to be blocked, the radiator of the engine water tank will also be partially blocked (both have the same internal structure and circulate the same coolant). Clean the inside of the warm air water tank, the inside of the radiator of the water tank and replace all the coolant, so as to completely eradicate the fault.

3. Maintain the thermostat

The common fault of the thermostat is that it can't be opened, but the reason why the warm air is not hot due to the thermostat fault is that the thermostat can't be closed, commonly known as the thermostat is always open. After the thermostat is normally open, the coolant begins to circulate from the idle speed of the engine. If the water temperature is low for a long time in winter in the north, the air conditioning warm air is naturally not hot. It is obvious from the thermometer that the pointer is obviously lower than the normal scale.

In addition, long-term low water temperature of the engine will lead to high fuel consumption and increased wear (the engine is not working at the optimal temperature), so it is necessary to carry out maintenance and inspection immediately when the water temperature is low for a long time.

People's Network-Why is it so cold? In winter, the air conditioner and warm air are not hot as hell.