Automobile engine pump maintenance six steps which need welding

Category:Automobile engine repair - Date:2018-01-07

Water pump is Car one of the important components of the engine cooling system is that the function of the pump is to pressurize the coolant to ensure its circulation in the cooling system and to accelerate the emission of heat. As a long-term running device, the pump will also fail during the operation. How can we repair these failures?

1, check the pump body and pulley wear and damage, if necessary, should be replaced. Check whether there is any bending of the pump shaft, the wear degree of the journal, and whether there is any damage to the shaft end thread. Check whether the blades on the impeller are broken and the wear of shaft holes is serious. Check the wear degree of water seal and bakelite gasket, for example, new parts should be replaced if exceeding the limit of use. Check the wear condition of the bearing and use the meter to measure the clearance of the bearing. If more than 0.10mm, the new bearing should be replaced.

after.2 and pump are removed, they can be decomposed sequentially. After decomposing, the parts should be cleaned and checked one by one to see if there are any defects such as cracks, damage and wear. If serious defects are found, they should be replaced.

repair of.3, water seal and seat: water seal, such as worn slotting, can be grinded with sand cloth, such as wear and tear to be replaced; water seals, such as rough scratches, can be repaired by a flat reamer or on a lathe. A new water seal should be replaced during overhaul.

4, when the pump body has the following damage, the welding repair is allowed: the length is within 30mm, the crack is not stretched to the bearing seat hole; the flange of the cylinder head is broken and broken, and the oil seal hole is damaged. The bending of the pump shaft should not exceed 0.05mm, otherwise it should be replaced. The blade breakage of the impeller should be replaced. The wear of the shaft diameter of the pump shaft should be changed or repaired.

5, check whether the pump bearing is flexible or abnormal noise. If there is any indication that the bearing is defective, it should be replaced.

6, when the pump is assembled, rotate it with your hand. The pump shaft should be free from stagnation, and the impeller and pump shell should not be rubbed. Then check the displacement of the pump. If there are any problems, check the cause and exclude. If the pump fails, the coolant will not be able to reach the corresponding place, its performance will not be effectively played, and ultimately affect the work of the engine. Therefore, it is necessary to strengthen the inspection of the water pump.

Regular cleaning of throttle can prevent high risk of idle speed
Vehicle acceleration is weak. How to clean throttle idle motor?
The reason why the car accelerates its weakness is carbon dioxide cleaning and throttle
Winter temperature drops suddenly to prevent cold wave cooling and cause automobile malfunction
Turbochargers start with idle speed for three minutes after starting
Turbochargers should be idle for three minutes after starting
Improper use of turbocharged driving skills - vulnerable engine
Improper use of turbocharged driving skills can easily damage the engine
Improper use of driving technology for turbocharged vehicle
4S shop loves you, is not easy to repairman explosion 5 big screen
Does it need a hot car to drive in the cold morning?
Comparison of 4 kinds of tyre repair methods for tire tying leakage and timely repair
Comparison of four ways of tire patching by tying nail leakage
Who can claim the loss of half of the vehicle damage caused by the difference between the fixed pric
How to avoid traps and buy pies for online shopping auto products
Pay attention to oil storage battery after storm in rainy season
Be careful when driving in the rainy season. Do not start the car when it is flooded
Snow is easy to freeze, and batteries are most afraid of low temperature
In winter driving, attention should be paid to external circulation and closing of air conditioners
Winter cold driving needs to know how to prevent frosting




Car6s car maintenance technology website Copyright @ 2017-2022