What should you do to adjust for increased running temperature during alignment?

• A. Align the machines immediately
• B. Let machines cool down
• C. Allow machines to reach operating temperature
• D. Ignore the running temperature

Answer: (C)

Allowing machines to reach operating temperature before performing alignment is crucial because the materials involved in the machinery—often metals—expand as they heat. This thermal expansion can alter the alignment of components. When machines are at their operating temperature, their physical characteristics, including how components fit together, reflect actual working conditions.

If alignment is performed prior to achieving the typical operating temperature, the result may be a misalignment that only becomes apparent once the machines are running hot, potentially causing premature wear, vibrations, and operational inefficiency. Therefore, adjusting for increased running temperature by aligning only after the machines have warmed up ensures that the alignment is accurate and suitable for normal operating conditions, significantly enhancing machine performance and longevity.