Generator set vibrates excessively during operation, especially at certain loads

Safety first: Do not place hands near moving parts. Shut down and lock out the generator before inspection.

• Inspect mounts: Check engine and alternator mounting bolts for tightness. Tighten to MTU torque specifications.
• Check isolators: Examine vibration isolators under the skid for damage, cracking, or collapse. Replace as needed.
• Coupling alignment: Inspect the flexible coupling between engine and generator for visible misalignment or damage. Precise alignment should be done by qualified personnel.
• Look for loose components: Ensure exhaust, intake, and accessory brackets are secure and not resonating.
• Vibration analysis: If vibration persists, arrange for a vibration analysis to identify unbalance or internal issues.