Do we stop, break the coupling apart, rough-in, check for obvious and final soft foot (perform the 4 pre-alignment steps) or do we proceed from where we are at?
The laser sensors are in place, the coupling is coupled, and the equipment has already been operating in this condition.
A number of my classes have chosen to start from the latter spot, bypassing proper rough in, soft foot and the other pre-alignment checks. They choose to use the operating condition as a starting point because after all “we are really close to begin with”. I typically step back and watch them struggle with the alignment. Why do they struggle? Because the coupling strain has not been removed (rough in) and soft foot has not been corrected.
It usually takes a while before the group gets the permanent message emblazoned on their memory banks. The reason we train so hard on the 4 pre-alignment steps in the classroom is because years of industrial experience has taught us the value of the time spent on these 4 preliminary yet essential principles. No matter what.
This has happened so often that I now start off the OJT portion of class with the strong warning “you will be tempted” to skip straight to making corrections after the alignment check reveals misalignment.