Purging air from a hydraulic system is...

Question 1 / 270705eccef9cbacbc34ba4d459d9

Question 1 of 270705eccef9cbacbc34ba4d459d9

Purging air from a hydraulic system is necessary when __________.

Question 1 of 27070

Purging air from a hydraulic system is necessary when __________.

🔍 Key Concepts

• Hydraulic systems and how air affects pressure and movement • When air is most likely to enter a closed hydraulic system • Difference between normal topping-off oil vs. opening/emptying the system

💭 Think About

• Think about which situation is most likely to introduce large amounts of air into the hydraulic lines, not just change temperature or rest time. • Consider what has to happen to the system (valves open, lines empty, components removed, etc.) for air pockets to form. • Ask yourself in which option you would need to restore solid, continuous oil flow with no bubbles to avoid spongy or jerky operation.

✅ Before You Answer

• Identify which choice involves breaking or emptying the closed system so air can get in. • Eliminate options where only a small volume of oil is added without opening major lines. • Ask: In which case would you specifically need to bleed or purge the system to remove trapped air before putting it back in service?

Question 1 of 27070

Purging air from a hydraulic system is necessary when __________.

the system has been drained and then filled with new oil

adding small amounts of oil to the system

the system has been idle for a long period of time

the system has been overheated