Heavy truck accessories heavy truck engine heavy truck

The heavy truck pump is one of the important parts of the cooling system of automobile engine. The function of the heavy truck pump is to ensure the circulating flow of the coolant in the cooling system by pressurizing it, and accelerate the heat emission.

Now give you a brief introduction to the solution to the problem of heavy truck water pump:

1. After the heavy truck pump is removed, it can be decomposed in sequence. After decomposition, the parts should be cleaned, and then check one by one to see whether there are cracks, damage and wear and other defects, such as serious defects should be replaced.

2, check whether the pump body and pulley wear and damage, should be replaced if necessary. Check whether the shaft of heavy truck water pump is bent, journal wear degree, shaft end thread is damaged. Check whether the blade on the impeller is broken and whether the shaft hole is worn seriously. Check the wear degree of water seal and bakelwood gasket, such as exceeding the use limit should be replaced with a new piece. Check the wear of the bearing. The clearance of the bearing can be measured by a table. If it exceeds 0.10mm, a new bearing should be replaced.

3, water seal and seat repair: water seal such as wear groove, abrasive cloth can be ground, such as wear should be replaced; Water seals with rough scratches can be repaired with a flat reamer or on a lathe. New water seal assembly should be replaced during overhaul.

4. Welding repair is allowed when the pump body has the following damage: the length is less than 3Omm, and the crack does not extend to the bearing seat hole; The joint edge with the cylinder head is broken part; The oil seal seat hole is damaged. The bending of heavy truck pump shaft shall not exceed 0.05mm, otherwise it should be replaced. Damaged impeller blade should be replaced. Heavy card pump shaft aperture wear should be replaced or set repair.

5. After the heavy pump is assembled, turn it by hand. The pump shaft is not stuck, and the impeller and the pump shell are not rubbed. Then check the displacement of heavy truck water pump, if there is a problem, should check the cause and eliminate. If the heavy truck pump fails, the coolant will not be able to reach the corresponding place, and its performance will not be effective, thus affecting the working condition of the engine.

6. Check whether the bearing of heavy truck water pump rotates flexibly or has abnormal sound. If there is a problem with the bearing, it should be replaced.