The main symptoms of a damaged
diesel engine water pump include idling problems, coolant leakage, engine noise, increased water temperature, abnormal oil temperature, and leakage at the seal.
1. Idle speed problem: The water pump provides cooling for the engine through a belt connection. If there is a problem with the rotation of the water pump, it will affect the engine speed, resulting in unstable idle speed, and may even stall in winter.
2. Coolant leakage: This is usually caused by internal corrosion due to aging of the water pump seal or long-term non-replacement of antifreeze. Coolant leakage can cause the engine to overheat and affect its normal operation.
3. Engine noise: When starting the engine, a low friction noise is heard, which may be caused by damage to the water pump bearing, which needs to be replaced immediately.
4. Increased water temperature: A water pump failure will cause the cooling system to be abnormal, resulting in increased water temperature. Checking whether the liquid in the water tank is flowing can help determine whether the water pump is working properly.
5. Abnormal oil temperature: The lubrication of the water pump depends on the oil. If there is a problem with the water pump, the oil temperature will rise.
6. Leakage at the seal: Check the seals regularly and replace worn and aged seals in time.
7. Increased unit vibration: Check the unit vibration regularly during operation. If it increases abnormally, stop the unit and check the water pump.
In order to prevent and solve these problems, it is recommended to regularly check and maintain the water pump, including replacing aged seals and antifreeze to ensure the normal operation of the water pump.
