Excavator Operator Certification Exam Prep · Question
After performing the recommended hydraulic oil check, you find the level is slightly below the 'ADD' mark on the sight gauge. The manual states the reservoir capacity is 250 litres. Approximately how much hydraulic oil should you add to bring it to the 'FULL' mark, assuming the 'ADD' to 'FULL' range represents 5% of the total capacity?
If the 'ADD' to 'FULL' range represents 5% of the 250-litre reservoir capacity, then 5% of 250 L is (0.05 * 250 L) = 12.5 L. This amount ensures the hydraulic s
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Question: After performing the recommended hydraulic oil check, you find the level is slightly below the 'ADD' mark on the sight gauge. The manual states the reservoir capacity is 250 litres. Approximately how much hydraulic oil should you add to bring it to the 'FULL' mark, assuming the 'ADD' to 'FULL' range represents 5% of the total capacity?
Answer options:
- Approximately 5 litres. ✅ Approximately 12.5 litres.
- Approximately 25 litres.
- Approximately 2.5 litres.
Correct answer: Approximately 12.5 litres.
Explanation: If the 'ADD' to 'FULL' range represents 5% of the 250-litre reservoir capacity, then 5% of 250 L is (0.05 * 250 L) = 12.5 L. This amount ensures the hydraulic system is adequately filled for optimal performance and prevents cavitation.
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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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