Red Seal Agricultural Equipment Technician Practice Exam

What happens to hydraulic fluid when it becomes contaminated?

1. It improves system efficiency

2. It can lead to system failure and reduced performance

3. It becomes thicker

4. It can be reused without issues

The correct answer is: It can lead to system failure and reduced performance

When hydraulic fluid becomes contaminated, it can lead to system failure and reduced performance due to several factors. Contamination can introduce particles, water, or other foreign substances into the hydraulic system, which can cause abrasive wear on components, leading to increased friction and heat generation. This degradation can impair the fluid's ability to transmit power effectively, reduce lubrication properties, and potentially lead to blockages in filters and valves. Over time, this can result in system failures, such as leaks or complete breakdowns of hydraulic components, which can be costly and time-consuming to repair. This emphasizes the importance of maintaining clean hydraulic fluid to ensure the efficient and reliable operation of hydraulic systems.