1. Pump body leakage: Pump body leakage is often caused by aging, wear or damage of the seal, and the seal or the entire pump body needs to be replaced. If it is caused by improper installation, it needs to be reinstalled.
2. Scaling of the water inlet: The water inlet will scale after long-term use, resulting in poor water flow or even failure to work properly. At this time, the water inlet part of the water pump needs to be disassembled for cleaning, and acetic acid or other cleaning agents can be used for cleaning.
3. Coolant is contaminated or blocked: When the coolant in the diesel engine water pump is contaminated or blocked, the water pump will not operate normally and may cause serious engine damage. The coolant should be drained, the water pump should be disassembled for cleaning, and new coolant should be replaced.
4. Electronic control failure: Such as sensor failure, control circuit failure, etc., such failures should be checked and repaired by professional technicians.
5. Unable to start: First check the power supply, including connector connection, switch contact, fuse, three-phase power supply, etc. If there is a circuit break, poor contact, blown fuse, or phase loss, the cause should be identified and repaired in time. In addition, the mechanical failure of the water pump itself should be checked, such as too tight packing or debris stuck between the impeller and the pump body.
6. Water pump heating: The causes may include bearing damage, pump shaft bending, too tight belt, etc. Solutions include replacing bearings, adjusting pump shaft and belt tightness, etc.
7. Insufficient flow: The causes may include mismatched power speed, belt slippage, pipe blockage, etc. Solutions include restoring rated speed, removing belt grease, and removing blockages.
8. Failure to suck water: The causes may include air in the pump body, air accumulation in the water inlet pipe, and lax closure of the bottom valve. Solutions include removing air from the pump body and checking the bottom valve.
9. Pump body locking: The causes may include wear or damage of components, damage to the coupling, etc. Treatment methods include replacing worn parts, checking and replacing couplings, etc.
