Assembly of water pump bearings

(1) Use a bearing heater to heat the bearing evenly to about 120℃ before loading it into the journal. During the installation process, copper rod can be used to beat the inner ring of the bearing. After the installation is complete, you can use a feeler to check the clearance between the bearing and the shaft, and confirm that there is no clearance.

 

(2) The clearance between the bearing end cover and the bearing can be measured by the pressure wire method. The axial clearance can be adjusted to between 0.1mm and 0.15mm by the copper pad, and then the bearing end cover is installed.

 

(3) the impeller is installed on the shaft, and the keys can be assembled before installing the impeller.

 

(4) After the installation of the end cover of the water pump, in the process of installing the end cover bolts, different centers should be caused on the diagonal.

 

(5) Install the pump on the pump skid in alignment. You can use the feeler ruler and ruler to check the gap of the coupling, there should be a 2mm ~ 6mm gap between the two couplings, and each group of intermediate adjustment gaskets can not exceed 4 pieces.

 

Commissioning of water pump bearings

(1) Confirm whether the circulating water system and lubricating oil are normal and all bolts should be tightened in place. There is no obvious jam and abnormal sound when turning the car.

 

(2) Pneumatic motor, motor voltage, current, inlet and outlet pressure record work.

 

(3) Check bearing temperature, root leakage and operation.