What causes the wear of the impeller of the automobile water pump? How do I repair it?

The proportion of damage to the impeller of the automobile water pump is not high, and the probability of water leakage and bearing damage is higher. After the water pump impeller is worn, the engine cooling system cannot circulate normally, so the high temperature of the engine and the non-return of water from the water replenishment bottle are typical manifestations after the impeller is damaged.

The impeller has been smoothed out, the pump has lost the function of basic circulation, and the rust in the pump can also be seen, and the wear and damage of the impeller of the pump is caused by impeller corrosion and rust. The most common cause of this corrosion is due to a non-conforming coolant. Coolant is also called antifreeze, which not only has good heat exchange capacity, anti-freezing and anti-boiling ability, but also has anti-rust ability and certain lubrication ability.

Therefore, a qualified coolant without failure does not corrode the metal, while a failed inferior coolant does not have a corrosion protection function. Different metals have different potentials, which can cause electrochemical corrosion in the presence of a medium, and the acidic products formed by the decomposition of diools in the coolant can also corrode the metal. Therefore, a qualified coolant will be added with preservatives to prevent corrosion of metal parts.

Failure Inferior coolant does not have anti-corrosion function, the metal parts of the cooling system will slowly corrode, rust, especially the high-speed rotating water pump impeller is more stressed, the corrosion is faster, and other parts such as water blockage, cylinder block, cylinder head will have a certain corrosion.

The most typical manifestation is the discoloration of the coolant, the normal color of the coolant is red or green, once it is rusty yellow, it means that the coolant has completely failed.

In this case, it should be replaced in time and the waterway should be cleaned. In addition, try not to mix different brands of coolant, the composition may be different, and chemical reactions may occur between additives. The qualified coolant also has a service life, no discoloration can not mean no deterioration, open the car with the user manual coolant column has clear requirements, according to the required mileage time to replace.

Coolant should never be replaced with water, which does not have the function of preventing rust and metal parts will damage faster. Moreover, when filling the coolant, it is necessary to ensure cleanliness and performance, to avoid sediment entering, and the coolant that is put down will be polluted by sediment and try not to recycle. If you want to use it, you have to filter it before you can use it, and if the coolant contains sediment, the impeller will wear out faster, just like a grinding wheel sharpening a knife.

There is also a reason for impeller damage caused by the ingress of foreign objects.

The impeller in the picture above is a typical example of damage caused by entering a foreign object, although this is rare. The eccentricity of the impeller after the bearing is damaged will also cause friction between the impeller and the cylinder block, and the impeller will be worn or damaged.

1. The coolant filled in the cooling system is unqualified, or the coolant is not replaced for a long time.

2. The cooling system does not use antifreeze but replaces it with ordinary water, which will also accelerate the damage of the water pump.

3. Air enters the cooling system, resulting in cavitation and corrosion of the pump blades.

If it cracks, it can only be replaced, and if it falls off, it can be pressed directly, and if it is corroded, it can be repaired or replaced according to the degree of corrosion.

The wear of the water pump impeller is mainly due to the presence of scale or metal particles in the engine water jacket, such as the presence of metal particles will cause the water pump impeller to be impacted, and the impeller will fall off after a long time. The maintenance is mainly to replace the pump assembly, because the pump impeller is integrated with the housing.

The wear of the automobile water pump impeller is due to the long-term and high-intensity work, which causes serious wear in all aspects, and this problem only needs to replace the water pump impeller.

Hello, the causes of impeller wear can be divided into two categories: one is chemical corrosion. Because the slurry is acidic, it is easy to react with the metal material on the impeller to form chemical corrosion.

Secondly, the electron transfer caused by the electron travel difference formed on the surface of the impeller and the oxidation reaction that occurs directly destroy the metal. The other type is physical wear: due to the fact that the slurry carries a large amount of particulate matter such as limestone and gypsum, the suction inlet of the pump directly impacts the pump impeller and destroys it.

1.Reduced efficiency of the pump: Wear of the circular gear pump before starvation will cause the gear clearance to increase, which will reduce the efficiency of the pump and prevent it from working properly.

2.Increased pump noise: Gear pump wear will lead to increased gear clearance, which will increase the noise of the pump and affect the working environment.

3.Increased leakage of the pump: Gear pump wear can lead to the aging of the seals, which can increase the leakage of the pump and affect the work efficiency.

4.Shortened pump life: Gear pump wear can lead to increased wear and tear on components such as gears and bearings, which can shorten the life of the pump.

5.Increased failure rate of the pump: Gear pump wear will lead to an increase in the failure rate of the pump, which will affect the efficiency and production efficiency.

Therefore, in order to avoid the adverse consequences of the wear and tear of the collapsed gear pump, it is necessary to regularly inspect and maintain the gear pump, replace the parts with serious wear in time, and maintain the normal working condition of the pump.

Because the gear pump is divided into oil pressure area and oil suction area, the pressure of the oil pressure area is greater than the pressure of the oil suction area, and the radial force generated by the pressure is not the same, resulting in the unbalanced radial force of the hydraulic pump. The radial force is unbalanced, so that the transmission shaft will deviate to the oil suction area, resulting in the gear and the pump or the leakage wall scraping, affecting the normal operation of the pump, resulting in leakage, wear and tear resulting in the reduction of pump life.

Causes of damage to automobile water pumps: 1. Coolant leakage, caused by the aging of the sealing ring of the water pump; 2. If the engine combination belt is too tight, it will lead to premature wear of the water pump; 3. The water pump reaches the service life and is not replaced for a long time; 4. Automobile water pump shaft bending, shaft journal wear, shaft end thread damage; 5. The blades on the impeller are broken and the shaft weight hole is worn; 6. The degree of wear and tear of the water seal and bakelite washer; 7. A bad pump will lead to poor circulation and high temperature, resulting in leakage of the pump or broken blades, and bad circulation; 8. If the antifreeze is not replaced for a long time, the internal corrosion will eventually cause damage to the water pump.

Summary. Hello, dear <>

The consequences of a broken truck pump impeller are; If the water pump is damaged, the coolant cannot be circulated in the engine, which will affect the heat dissipation of the car engine. Powering the coolant cycle is the water pump, which has two circulation paths within the engine, one large and the other small.

What are the consequences of a broken truck pump impeller?

Hello, dear <>

The consequences of a broken truck pump impeller are; It will cause the engine to overheat and damage the engine, and if the water pump is damaged, the coolant will not be able to circulate in the engine, which will affect the heat dissipation of the car engine. The water pump that powers the coolant circulation is the water pump, and the coolant has two circulation paths in the engine, one is a large cycle and the other is a small cycle.

Hello, dear <>

After the pump is removed, it can be broken down in order. After decomposition, the parts should be cleaned, and then the bridge should be inspected one by one to see if there are cracks, damage and wear and other defects, if there are serious defects should be replaced. Check the pump body and pulley for wear and damage, and replace it if necessary.

Check whether the shaft of the liquid water pump is bent, the degree of wear of the journal, and whether the thread at the end of the shaft is damaged. Check whether the blades on the impeller are broken and whether the shaft hole is seriously worn. Check the wear degree of the water seal and bakelite gasket, and replace it with new parts if it exceeds the use limit.