On a VAZ 2107 car, the pump is replaced in cases where the main signs of its breakdown are manifested. But before replacing the node, you need to figure out what it is for, and find out what exactly needs to be replaced. Of course, for the work you will need a tool. Some tips also do not hurt to find out, in this case only there is the opportunity to carry out high-quality repairs. Moreover, there is no need to resort to the services of a car mechanic.
What is a pump
In fact, this is a conventional centrifugal pump. Such designs are used not only in the automotive industry, but also in the food industry, steel, in agriculture. It is necessary to replace the VAZ 2107 pump in the event that it stops working - the liquid does not circulate through the system, the engine overheats. From this we can find out the main purpose - giving fluid in the speed system.
Of course, you can do without a pump that will forcefully drive antifreeze. But in this case, everything falls under the influence of elementary laws of physics. And they will work, but not so efficiently. With constant circulation of antifreeze, cooling is much better. The base of the pump is the shaft on which the impeller is mounted. It is she who is responsible for moving along the liquid cooling circuits.
Key signs of a pump breakdown
But how to determine if a pump is needed on the VAZ 2107? In fact, there is nothing easier, all diagnostics can be done visually. First, there should be no fluid leakage. If they are present, then, most likely, there is damage to the gasket or seal. Very rarely, tightening bolted connections that are twisted out of vibration will help. Unfortunately, this also happens sometimes.
The second - there should be no backlash of the pump shaft. To check it, it is necessary to remove the generator belt and try to turn the rotor with your hand. There should be no jamming or backlash with axial displacement. Third - there should be no extraneous sounds. For example, when the bearing of the water pump is worn, a whistle is very often heard. But before replacing the pump, make sure that the breakdown lies in it, because the generator has a similar symptom. And most importantly - tension the belt correctly.
Preparing for repairs
Before starting work, you need to cool the engine. Do not try to carry out repairs on a hot motor, it is fraught with burns. Optimally, if the temperature drops to 40-50 degrees. In the case when it is planned to replace the VAZ 2107 pump , the injector is in the injection system, but you are not going to fill in new antifreeze, you need to prepare a clean container for draining. For convenience, disconnect and remove the battery. So you free up space for work.
Now your task includes one thing - to get rid of antifreeze in the cooling system. Open the faucet of the stove to drain all the liquid. First, unscrew the plug on the radiator. Under it, of course, set the capacity of the liters to 10. Wait until all the antifreeze drains, to speed up the process, open the cover on the radiator. Then unscrew the bronze bolt on the engine block - this is the second plug. That's all, the antifreeze has been drained, now it is possible to replace the pump on a VAZ 2107 car.
Replacing the pump cover
The pump itself consists of two halves, but only the cover fails, since it contains the rotor, the impeller, and the bearing. It is worth noting that the replacement of the bearing of the VAZ 2107 pump is possible, but is there any sense in this procedure? An old bearing could break the housing of the cover, and when a new one is installed, even greater destruction will occur. And in the end , the service life will be less than six months. And this is very small. But if you decide to replace the bearing, do not forget about installing a new oil seal.
To remove the pump cover, you will need two keys - 13 and 17. Second, unscrew the nut on the generator bracket to loosen the belt tension. And first, unscrew the three nuts that secure the pump cover. That's all, there is nothing difficult to repair. Now it is important to clean the entire surface with which the roof is adjacent to the base. Remains of the old gasket are not allowed. When you install a new one, grease it with a thin layer of sealant. The assembly is carried out in the reverse order with a short exposure time so that the sealant has time to dry.
System boost
After the pump has been replaced on the VAZ 2107, pour antifreeze into the radiator and the expansion tank. Remember to tighten all drain plugs. When the system is full, squeeze the nozzles with your hands. This will help get rid of large accumulations of air. After that, start the engine and warm it up to a working temperature of 85-90 degrees. If necessary, add fluid to the system. To get rid of air congestion, squeeze all the nozzles with your hands. Notice if the antifreeze comes from the tube that is connected to the throttle assembly.