Alignment

Question 0

List two reasons for doing a rough alignment

Answer 0

I need to get the two machines close enough so you don’t run out of travel in the two dial indicators or they don’t crush the dials with lack of travel

Question 1

List three things that could cause coupling run out

Answer 1

Worn bearings
Bent shaft
A coupling with an improperly drilled hole

Question 2

Explain while Dial bar sag has to be added to the reading taking at 6 o’clock and subtracted from the readings taken at 12 o’clock

Answer 2

Because gravity pulls the two tiles opposite ways from where they were zeroed

Question 3

When doing the alignment on a new pump installation what must be done first before checking for Pipe strain and taking any readings base is already leveled and grouted

Answer 3

You need to set the datum line

Question 4

What is soft foot and why is it important to perform a soft foot check before starting an alignment

Answer 4

Soft foot is when one of the machines feet does not touch the ground thus if you don’t account for it it’s can throw your shim stack if that foot off

Question 5

On across dial where should you zero your horizontal

Answer 5

Dial a at 3 o’clock and dial be at 9 o’clock

Question 6

On across dial where should you zero no vertical

Answer 6

A is on top and B is on the bottom