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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Question explanations
- During a final inspection of an excavator, prior to beginning work, an operator notices significant play in th
- An excavator operator is preparing to dig a trench in cohesive soil. To achieve maximum breakout force, what a
- Which control typically governs the arm (or dipper arm) movement for an excavator?
- What condition might require sloping or shoring of a trench less than 1.2 meters (4 feet) deep?
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