Automotive Water Pump Manufacturer

1. When the newly installed water pump is just running, a water film will be formed between the rotating surface and the static surface of the water seal, and some water pumps will be accompanied by slight leakage from the overflow hole, which is a normal phenomenon.It’s not the quality of the pump. The pump runs for a period of time, the phenomenon will be naturally eliminated after the two friction surfaces are run in, if the leakage phenomenon continues,it may be caused by the water seal leak, should be checked and replaced the pump.
2. After a considerable part of the pump is loaded, the engine runs for a short time at a cooler temperature, and after shutting down, it will be found that there is liquid flowing out of the overflow hole, at this time, attention should be paid to observe: whether this situation continues, if the flow stops after a little, it is due to the rapid condensation of the coolant vapor, and it should not be easily concluded that the pump leaks water.
3. Defects in the product itself, or instantaneous supercooling and overheating lead to the rupture of the water seal, resulting in leakage. Replace the water pump.

A new pump may “squeak” when turned by hand, which is the sound of dry friction of the water seal, which is a normal phenomenon.It is not a product quality problem. When the coolant is added after the pump is installed, the abnormal sound will disappear after the liquid lubrication.

Reasons for abnormal bearing noise:

1. The rolling element, raceway or channel fails due to the original defect.
2. The rolling element and raceway or channel are worn, and the bearing clearance becomes larger.
3. Hardening and drying of bearing grease.
4. Misjudgment of other parts such as tension wheel abnormal sound.
5. Unbalanced related parts, such as fans and clutches, aggravate bearing wear.
6. Wrong pump specifications.

Cause of bearing lock:

1. Abnormal bearing noise caused by the following factors will cause the bearing temperature to rise, and when the temperature rise is serious, it will Melting the bearing retainer causes the rolling element to move disordered and interfere with each other.

Cause of shaft fracture:

1. The material defect of the shaft itself causes insufficient strength.
2. Defects caused by heat treatment of shaft.
3. Additional additional load shock resulting from unbalance of related components.
4. After the bearing is locked, the applied load becomes larger.
5. Wrong pump specifications.

1. The sealant is not evenly applied or excessive, causing leakage in the gap.Not covered by the factory warranty.
2. The gasket is not installed properly.Not covered by the factory warranty.
3. Improper installation may damage the sealing rubber ring or gasket.Not covered by the factory warranty.
4. Installation surface is not clean, there are foreign bodies.Not covered by the factory warranty
5. Fasteners are not tightened to the same degree.Not covered by the factory warranty.

Reasons for belt stopper falling off:

1. The retaining ring is not welded properly.
2. The height of the pump pulley used is inconsistent with that of the engine gear train.

Reasons for Pump impeller is corroded:

1. After the water pump is installed, the impeller is corroded without reaching the warranty period. This is because the antifreeze is too poor (acidic or alkaline, and the paragraphs of the mixed), which causes the cavity, water tank, and water pump to corrode. Because the impeller is in continuous operation, the speed of corrosion is accelerated.
2. Before replacing the pump, if the new antifreeze is not replaced, and the original anti -freezing fluid has deteriorated and has corrosive, the service life of the newly replaced water pump will be reduced; Also shortened.

Our suggestion: Replace the engine coolant in a timely manner, clean the engine cooling system at the same time, and use high-quality antifreeze to avoid causing greater losses.

Reason: The blocked water leakage hole is human destructive factor. The behavior cannot prevent the pump from leaking water, and it may destroy the stability of the bearing.

Our suggestion: It is strictly forbidden to play glue on the leakage hole or stuffy cover.