Hydraulic Reservoir Test

Experiment with this hydraulic tank simulator

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Hydraulic Reservoir Assembly Simulation

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Suggested exercises and observations

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.

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)

• 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 prevent the failure happening.

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.