VAZ 2107: replacement of the pump and pumping the cooling system

By car VAZ 2107, the pump is replaced in those cases, if the main signs of its failure are manifested. But before you change the node, you need to understand what it is for, and find out what exactly needs to be replaced. Of course, for the work you need a tool. A few tips also do not hurt to find out, in this case only, there is an opportunity to carry out quality repairs. And there is no need to resort to the services of an auto mechanic.

What is a pump

In fact, this is a conventional centrifugal pump. Similar designs are used not only in the automotive industry, but also in the food industry, steelmaking, and agriculture. It is necessary to replace the pump VAZ 2107 in the event that it stops working - the liquid does not circulate through the system, excessive heating of the engine occurs. From this it is possible to find out the main purpose - giving a fluid in the speed system.

Of course, you can do without a pump that will forcibly drive antifreeze. But in this case everything goes under the influence of the elementary laws of physics. And they will work, but not so effectively. With a 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 around the coolant circuits.

Main signs of pump failure

But how do you determine if a VAZ 2107 needs a pump replacement? In fact, nothing is easier, all the diagnostics can be done visually. First, there should be no leakage of liquid. If they are present, then, most likely, there is damage to the gasket or oil seal. Very rarely will the tightening of the bolted joints that have been wrenched from vibration help. Unfortunately, this also happens sometimes.

The second - there should be no backlash of the pump shaft. To check it, you need to remove the generator belt and hand to try to rotate the rotor. There should be no jamming or backlash in the axial displacement. Third - there should be no extraneous sounds. For example, when the bearing of a water pump wears, a whistle is very often heard. But before replacing the pump, make sure that the breakdown lies in it, because the same symptom and the generator. And most importantly - pull the belt correctly.

Preparation for repair

Before you start work, you need to cool the engine. Do not try to carry out repairs on a hot engine, it is fraught with getting burns. Optimum, if the temperature drops to 40-50 degrees. In the event that the pump VAZ 2107 is planned to be replaced , the injector in the injection system, but the antifreeze is not to be filled in, you need to prepare a clean container for draining. For more convenience, disconnect and remove the battery. So you free up space for work.

Now your task is one - get rid of the antifreeze in the cooling system. Open the stove cock to drain all liquid. First, unscrew the plug on the radiator. Under it, of course, set the capacity of liters to 10. Wait until all the antifreeze drains, to speed up the process, open the lid on the radiator. Then you unscrew the bronze bolt on the engine block - this is the second stopper. That's all, antifreeze was drained, now it is possible on the car VAZ 2107 replacement of the pump.

Replacing the pump cover

By itself, the pump consists of two halves, but only the lid breaks down, since it contains both a rotor, an impeller, and a bearing. It is worth noting that the replacement of the bearing of the pump VAZ 2107 is possible, but is there any sense in this procedure? The old bearing could break the lid body, and with the installation of a new one, the destruction will be even greater. 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 to install a new oil seal.

To remove the pump cover, you need two keys - 13 and 17. Second, unscrew the nut on the generator bracket to loosen the belt tension. And the first twist three nuts, which fix the cover of the pump. That's all, there is nothing complicated in the repair. Now it is important to clean the entire surface, which the roof is adjacent to the base. The remnants of the old gasket are not allowed. When you install a new one, then lubricate it with a thin layer of sealant. The assembly is carried out in the reverse order with a small time delay, so that the sealant has dried.

Prorolling the system

After the replacement of the pump was performed on the VAZ 2107, pour the antifreeze into the radiator and the expansion tank. Do not forget to tighten all the drain plugs. When the system is full, squeeze the nozzles with your hands. This will help get rid of large concentrations of air. After this, start the engine and warm it up to an operating temperature of 85-90 degrees. If necessary, add liquid to the system. To get rid of air plugs, grasp all the pipes with your hands. Note whether the antifreeze went out of the tube, which is connected to the throttle assembly.