1. Hydraulic Power System Accumulators, Actuators, Seals
Spokane Community College

2. Accumulators
Piston Type
Bladder
Diaphragm

3. Piston Type

4. Diaphragm Type

5. Diaphragm

6. Maintenance Removal Make sure and remove system pressure first!
To Charge
Make sure system pressure is at Zero and if piston type, be sure piston is at the stop!

7. Actuator
Linear Actuators
Rotary Actuators

8. To transform hydraulic pressure into useful work!
Purpose of Actuators?
To transform hydraulic pressure into useful work!

9. Landing Gear Actuator Installation

10. Actuators

11. Double Acting Cylinder

12. Seals

13. Dimensioning

14. Numbering

15. Seals

16. Seal Under 0 Pressure

17. O Ring (Two Way Seals)

18. Backup Rings

19. Backup Ring Installation

20. O-ring Installation Compatibility
Blue Dot or Stripe=
Compatible with 5606
Red Dot or Stripe=
Compatible with Fuel
Yellow Dot=
Synthetic Engine Oil
White Stripe=
Petroleum based engine oil or lubricant
Green dash=
Skydrol hydraulic fluid

21. Tools

22. Removal Tools (0 Ring)

23. Installation (O Ring)

24. Fluid Carrying Lines

25. Fluid Carrying Lines Teflon Hoses take a set. Do not straighten!
Do not pull a line into place with “B” nut!
What is permissible damage in rigid lines?
Are straight runs best?
What is the “Lay Line”