Hydraulic Reservoir Test

Hydraulic Reservoir Assembly Simulation

Suggested exercises and observations

Complete the following exercises

Monitor, test, and maintain

1. Select the 'Operate Power Unit' button from the menu screen, if you don't see a drop down list.

2. Select dropdown 6 (How to monitor key conditions and maintain them)

♦ Explore the maintenance requirements of each item by mouse over or clicking on them.

3. Select dropdown 7 (Test methods, typical faults and repair methods)

♦ Explore how to test each item by mouse over or clicking on them.

Experiment 1: Hydraulic equipment delivers high powers with excellent reliability because all of the moving components are protected by a film of fluid and therefore should never touch each other.

Question 1: What is the biggest cause of failures in hydraulic systems?

Fluid contamination e.g. microscopic particles of dirt getting into the fluid causes the vast majority of faults or failures

Experiment 2: Particle contamination is removed from the fluid by the constant flow of fluid through a range of filter elements.

Question 2: How do you check the condition of each filter element?

Filters should contain a clogging indicator that measures the pressure drop across the element when the fluid is warm and flowing. A replacement schedule is required if no indicator is fitted.

Experiment 3: Fluid contamination is measured using the ISO4406, or equivalent standard.

Question 3: How should the fluid cleanliness be measured to this standard?

An online particle counter is used to measure and count the microscopic particles of dirt within the fluid.

Experiment 4: If the hydraulic fluid becomes damaged then lubrication and boundary layers can break down causing eventual component damage.

Question 4: What is probably the main causes of fluid deteriation?

High local or system temperatures will damage most fluids. Check your system and fluid normal operating temperature range.

Diagnose a range of issues

4. Select dropdown 9 (Diagnose what is wrong with this circuit and repair)

♦ Check the valve settings to diagnose what is wrong with this equipment and reset it correctly.

5. Select dropdown 10 (Diagnose 1 an urgent maintenance task required)

♦ Drag each test instrument over the components to display their condition in the text box.

♦ Consider what the instruments tell you to assess the cause of the fault. Don't just report the fault itself.

♦ Explain how you would repair the fault.

6. Select dropdown 11 (Diagnose 2 what is starting to fail, find the signs)