🔍 Key Concepts

• Heat generation in hydraulic systems (what creates excess heat in the oil) • Effect of flow restriction or excessive load on pump and motor temperature • Difference between oil quantity/level issues and mechanical/electrical overloads

💭 Think About

• Which condition would make the pump and motor work harder than normal, converting more electrical energy into heat in the hydraulic fluid? • Do low or high oil levels directly create heat, or do they more often cause other problems like aeration, cavitation, or leaks? • Which option most clearly describes a situation where the system is being asked to do more work than it is designed for?

✅ Before You Answer

• Identify which option directly causes increased load on the hydraulic pump/motor rather than just a side-effect like leakage or aeration. • Eliminate choices that mainly affect seal performance or oil expansion space instead of core system workload. • Think about which condition would lead to sustained heavy current draw and high pressure, turning into heat in the hydraulic fluid.