Which of the following could indicate the need for maintenance of construction equipment?

The identification of unusual sounds or vibrations as an indicator for the need for maintenance is critical in equipment operation. Equipment that is functioning normally typically operates without any odd noises or excessive vibrations. Such irregularities can signal underlying issues, such as worn parts, misalignment, or mechanical failures that could potentially lead to more significant damage if not addressed promptly.

Monitoring these sounds and vibrations allows operators to proactively manage equipment health, ensuring safety and reliability on the job site. By addressing these concerns early, operators can prevent costly repairs and downtime. In contrast, perfectly normal operation and increased fuel efficiency do not suggest any maintenance requirements; instead, they indicate that the equipment is functioning as intended. Regular scheduled inspections are a good practice for maintenance, but they are not an immediate indication of a problem like unusual sounds or vibrations are.