Generator vibrates excessively, causing enclosure panels to rattle

Safety: Disable automatic start. Keep clear of moving parts while the unit is running.

• Check base and leveling: Ensure the generator base is firmly anchored and level. Tighten anchor bolts if loose.
• Inspect mounts: With the engine off, inspect rubber engine and alternator mounts for cracking or separation. Replace damaged mounts.
• Tighten hardware: Check all accessible mounting bolts on the engine, alternator, and exhaust system. Tighten to CAT torque specs.
• Observe rotating parts: Run the unit briefly and watch for wobble in the fan, pulleys, or flywheel. If present, shut down and have a technician inspect for imbalance.

Severe vibration can damage wiring and components; if it cannot be corrected with basic checks, schedule service with a CAT technician.