Piper Navajo PA-31 Service Manual page 291

SECTION VI
HYDRAULIC
SYSTEM
Paragraph
Aerofiche
Grid No.
6-1.
6-2.
6-3.
6-4.
6-5.
6-6.
6-18.
6-19.
6-20.
Introduction ...............
Description and Principles of Operation
...............
Troubleshooting
..............
Flushing Hydraulic System .......................
Hydraulic System Operational Checks
................
Hydraulic Test Unit (Piper No. 753 080) ...............
6-7. Introduction (Piper Test Unit) ...............
6-8. Connecting Test Unit ..........
6-9. Cycling Landing Gear ....................
6-10. Checking Time Delay Valve
.......
6-11. Checking Handle Release to Neutral ............
6-12.
Checking Priority Valve ...................
6-13. Checking Main Relief Valve
.......
6-14. Checking Hand Pump Relief Valve
......
6-15.
Checking for Suction Air Leakage .............
6-16. Checking Landing Gear Cycle Time ............
6-17. Disconnecting Test Unit
.........
Hydraulic Test Unit (Optional)
....................
Identification of Power Packs .....................
Hydraulic Power Pack (Ozone) .....................
6-21.
Removal of Power Pack ...................
6-22. Disassembly of Power Pack .................
6-23. Disassembly of Manifold
.........
6-24. Disassembly of Hand Pump Suction Screen
...
6-25. Disassembly of Hand Pump Relief Valve ....
6-26.
Disassembly of Main Relief Valve ......
6-27.
Disassembly of Priority Valve .......
6-28. Disassembly of Hand Pump Check Valve .........
6-29. Disassembly of Standpipe and Filter
.....
6-30. Disassembly of Door Vent Valve ..............
6-31. Disassembly of Landing Gear Handle and Handle-Release
6-32. Cleaning, Inspection and Repair of Power Pack
6-33. Assembly of Power Pack
.........
6-34.
Assembly of Door Vent Valve .......
6-35.
Assembly of Standpipe and Filter .............
. . · . . . . . . .
.........
· ·.
. 2A15
. 2A15
. 2A24
. 2A24
. 2A24
. 2A24
.. 2A24
.. 2B3
. 2B3
.. 2B4
.. 2B4
.. 2B5
. 2B5
.. 2B5
..
2B6
.. 2B6
. 2B7
. 2B7
. 2B7
..
2B9
. 2B9
..
2B9
.
2B15
.
2B17
.. 2B17
..
2B17
.. 2B17
..
2B17
.. 2B17
..
2B18
. 2B18
.2B18
..
2B18
.2B18
..
2B19
Reissued: 10/12/79
2A9