Excavator Operator Certification Exam Prep · Question
During a pre-operational fluid check, a new excavator operator finds that the hydraulic fluid level is exactly at the 'ADD' mark on the sight gauge. The engine is off and cold. What is the correct procedure to follow?
When the hydraulic fluid level is at the 'ADD' mark, it indicates that fluid needs to be added to bring it to the proper operating level, typically the 'FULL' m
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Question: During a pre-operational fluid check, a new excavator operator finds that the hydraulic fluid level is exactly at the 'ADD' mark on the sight gauge. The engine is off and cold. What is the correct procedure to follow?
Answer options: ✅ Add hydraulic fluid until the level reaches the 'FULL' mark on the sight gauge.
- Start the engine, run it for a few minutes, then recheck the level.
- Operate the machine carefully and monitor the hydraulic pressure gauge.
- Do not add fluid, as the 'ADD' mark indicates it's still within acceptable operating limits when cold.
Correct answer: Add hydraulic fluid until the level reaches the 'FULL' mark on the sight gauge.
Explanation: When the hydraulic fluid level is at the 'ADD' mark, it indicates that fluid needs to be added to bring it to the proper operating level, typically the 'FULL' mark, especially when the engine is off and cold. Running the engine first or operating without adding fluid would not be correct and could lead to hydraulic system issues. Most manufacturers specify checks when cold and off.
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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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