The installation requirements for the mechanical seal of the water pump are as follows: 1. The installation position of the mechanical seal should be at the front or rear end of the axial direction, and should not be installed in the middle position.

2. Before installing the mechanical seal, the sealing surfaces of the shaft and pump body must be cleaned and checked to see if they are flat, without scratches or other damage.

3. Special installation tools should be used for the installation of mechanical seals, and the direction of the sealing ring should be ensured in the correct direction.

4. Before installing the mechanical seal, a layer of lubricant must be applied to the shaft to avoid damage to the seal due to dry friction during operation.

5. The pressing force of the mechanical seal must be appropriate to ensure good sealing performance, but it should not be too tight to avoid shaft wear and seal failure.

6. After installing the mechanical seal, static and dynamic seal tests should be carried out to ensure the performance and normal operation of the mechanical seal.

7. During operation, the wear of the mechanical seal should be checked regularly and replaced as necessary.