Excavator Operator Certification Exam Prep · Question
What specifically should an operator check regarding the excavator's boom and stick during a pre-operation inspection, concerning hydraulic leaks?
Visible oil stains or drips indicate potential hydraulic leaks from cylinders, hoses, or connections, which can lead to loss of function, environmental contamin
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Question: What specifically should an operator check regarding the excavator's boom and stick during a pre-operation inspection, concerning hydraulic leaks?
Answer options:
- Only check if the boom and stick can lift their maximum rated load without sagging. ✅ Look for visible oil stains or drips around hydraulic cylinders, hoses, and connections on the boom and stick.
- Verify the hydraulic pressure readings for the boom and stick functions on the in-cab display.
- Listen for any unusual whistling sounds coming from the hydraulic lines in that area.
Correct answer: Look for visible oil stains or drips around hydraulic cylinders, hoses, and connections on the boom and stick.
Explanation: Visible oil stains or drips indicate potential hydraulic leaks from cylinders, hoses, or connections, which can lead to loss of function, environmental contamination, and safety hazards. Early detection is key.
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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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