Just follow the steps below for rough adjustment:
1, unscrew the four fastening bolts of the coupling protective cover, and remove the protective cover;
2, turn the coupling by hand, and observe whether the front and rear couplings are level, and whether there is any shaking or deflection; you can place tools such as a ruler close to the coupling as an auxiliary reference, and observe whether the gap between the outer circle of the coupling and the ruler changes significantly during rotation;
3. If the coupling is not concentric, adjust accordingly: (1) If it is deviated left or right, loosen the fastening bolts of the pump head bearing seat or motor, and fine-tune the direction of the pump head or motor; (2) If the pump-side coupling is higher than the motor-side coupling, a metal sheet can be placed under the motor to raise the motor; otherwise, a metal sheet can be placed under the pump head bearing seat to raise the pump head;
4, check the end face gap between the pump end coupling and the motor end coupling, it should not be less than 1mm, generally between 2~3mm;
5, the coupling adjustment is completed, reinstall the protective cover, and confirm that the fastening bolts of the pump head bearing seat and the motor are tightened.
The above answers are for reference only.
Source: China Cement Spare Parts Network
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