Complete the following exercises
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?
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?
Experiment 3: Fluid contamination is measured using the ISO4406, or equivalent standard.
Question 3: How should the fluid cleanliness be measured to this standard?
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?
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.