TM 55-1520-240-23-6
7-4
INSTALL HYDRAULIC SYSTEM PLUMBING (GENERAL INFORMATION)
7-4
INITIAL SETUP
Applicable Configurations:
All
Tools:
Hydraulic Repairer’s Tool Kit, NSN 5180-00-323-4891
Inspector’s Tool Kit, NSN 5180-00-323-5114
Containers
Low Pressure Compressed Air Source
Materials:
Cloths (E120)
Hydraulic Fluid (E199)
Teflon Tape (E398)
Parts:
Packings
Seals
Gaskets
Personnel Required:
Aircraft Pneudraulics Repairer
Inspector
References:
Task 1-13
TM 1-1500-204-23
NOTE
When installing hydraulic fittings,
hoses or tubes, use following
information as a guide.
INSTALLATION OF FITTINGS
1.
Place containers and cloths (E120) to catch and
absorb fluid that drains during installation.
2.
Clear fittings with low pressure compressed air.
3.
Inspect threads for burrs or stripping.
4.
Coat all seals, packings, and threads with clean
hydraulic fluid (E199).
5.
Install all new packings, seals, or gaskets.
6.
Align fittings with lines before final tightening.
INSTALLATION OF HOSES
7.
Place containers and cloths (E120) to catch and
absorb fluid that drains during installation.
8.
Clear hoses with low pressure compressed air.
9.
Inspect threads for burrs or stripping.
10.
Inspect that hoses are not frayed, cut, worn, or
weather-cracked.
Straightening a bend in a used hose
may damage hose.
NOTE
Do not try to straighten bends in hose.
Use hose so bends fit location (TM
1-1500-204-23).
11.
Deleted.
12.
Make sure hoses do not twist when tightening
end fittings or nuts.
13.
Make sure hose is free to follow movement of
components. Make sure hose has no bends that
restrict fluid flow.
14.
Spiral wrap all areas on hoses where chafing can
occur. Use Teflon tape (E398).
15.
Make sure hoses are properly anchored to
prevent chafing.
16.
Torque hose end fittings (Task 1-13).
7-18
