Excavator Operator Certification Exam Prep · Question
An excavator operator attempts to activate the 'power boost' function, but no noticeable change in digging force occurs. Other hydraulic functions, however, seem to operate normally with adequate speed. What is the most probable hydraulic system fault for this specific issue?
Since other hydraulic functions are normal, a completely failed main pump or general return filter issues are less likely. A significant boom cylinder leak woul
Start free practice for Excavator Operator Certification Exam Prep
263 questions · no signup required · 40 free questions per day
Question: An excavator operator attempts to activate the 'power boost' function, but no noticeable change in digging force occurs. Other hydraulic functions, however, seem to operate normally with adequate speed. What is the most probable hydraulic system fault for this specific issue?
Answer options:
- A completely failed main hydraulic pump. ✅ A stuck or malfunctioning pressure relief valve for the power boost circuit.
- A significant leak in the boom cylinder seals.
- A clogged hydraulic tank return filter.
Correct answer: A stuck or malfunctioning pressure relief valve for the power boost circuit.
Explanation: Since other hydraulic functions are normal, a completely failed main pump or general return filter issues are less likely. A significant boom cylinder leak would affect regular digging force. The 'power boost' function typically involves activating a specific part of the hydraulic system (often by increasing pressure in certain circuits). Therefore, a stuck or malfunctioning relief valve specifically within that power boost circuit, preventing the pressure increase, is the most probable cause.
Start free practice for Excavator Operator Certification Exam Prep
263 questions · no signup required · 40 free questions per day
More about Excavator Operator Certification Exam Prep
Related Questions
- 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?
- According to IUOE best practices, what is the LAST thing an operator should do before leaving the excavator's
- Travel on slope — bucket should be:
More for Excavator Operator Certification Exam Prep candidates
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?
Ready to practice?
Free, no signup required. Build a wrong-question list as you go.
Start Free Excavator Operator Certification Exam Prep Practice →Related courses
Other Canadian certifications candidates often prepare for alongside this one.