When should coupling runout be checked during the alignment process?

Coupling runout should be checked before beginning the alignment procedure because it is critical to establish a clear baseline for the alignment process. Evaluating the coupling runout early allows the technician to determine whether the couplings are improperly aligned, which can affect the alignment of the equipment as a whole. If the runout is excessive, it may lead to false readings during the alignment process, potentially resulting in further misalignment and mechanical issues down the line. By addressing any runout before starting the alignment, the technician ensures that the equipment is aligned accurately and mitigates the risk of operational problems caused by misalignment. This proactive approach is essential for effective machine operation and prolonged equipment life.