Excavator Operator Certification Exam Prep · Question
Upon checking the hydraulic fluid reservoir during a pre-operation inspection, the operator notes the fluid level is below the 'minimum' mark on the sight glass. What action should be taken?
Low hydraulic fluid can cause cavitation, overheating, and damage to pump components. The correct action is to add the specified fluid to the proper level befor
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Question: Upon checking the hydraulic fluid reservoir during a pre-operation inspection, the operator notes the fluid level is below the 'minimum' mark on the sight glass. What action should be taken?
Answer options:
- Add generic motor oil to top it up to the acceptable level. ✅ Immediately add the manufacturer-specified hydraulic fluid to the correct level before operating.
- Operate the machine at a reduced capacity until a maintenance technician can add fluid.
- Ignore it, as hydraulic systems are self-bleeding and will draw fluid from other components.
Correct answer: Immediately add the manufacturer-specified hydraulic fluid to the correct level before operating.
Explanation: Low hydraulic fluid can cause cavitation, overheating, and damage to pump components. The correct action is to add the specified fluid to the proper level before operation to prevent damage and ensure safe function.
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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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