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Excavator Operator Certification Exam Prep · Question

During a daily pre-operational inspection of an excavator, the operator notices a significant amount of grease residue around the track roller seals on one side. What does this observation most likely indicate?

Excessive grease around track roller seals often indicates over-greasing, which can blow out seals, or a seal that is already compromised and leaking. This requ

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Question: During a daily pre-operational inspection of an excavator, the operator notices a significant amount of grease residue around the track roller seals on one side. What does this observation most likely indicate?

Answer options: ✅ One or more track rollers are over-greased or a seal is compromised, requiring further investigation.

  • The track tension is set too high on that side, causing grease to be expelled.
  • This is a normal byproduct of operation and requires no immediate action.
  • The excavator's final drive oil level is critically low, and grease is being drawn in.

Correct answer: One or more track rollers are over-greased or a seal is compromised, requiring further investigation.

Explanation: Excessive grease around track roller seals often indicates over-greasing, which can blow out seals, or a seal that is already compromised and leaking. This requires further inspection to prevent bearing damage. (CSA Z248.1, CCOHS guidance)

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