there was high axial vibration in single stage horizontal centrifugal pump, its bearings, bearing housings were changed. trueness of shaft was checked and found ok.Now after allignment and coupling of the pump vibration readings are as follows:
Motor NDE H:40,A:80, V:40
Motor DE H:60, A:40, V:30
Pump DE H:120, A:25, V:23
Pump NDE H:40 to 80, A:30, V:30

please suggest what could be the reason and how it can be rectified
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