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TM 5-2420-222-34
1-27.
TUBES AND COMPRESSION FITTINE
c.
Assemble new tubes, compression sleeves, and inverted nuts
as follows:
(1)
Slide inverted nut onto end of tube.
(2)
Slide compression sleeve onto end of tube.
(3)
Repeat steps (1) and (2) for other end of tube as
required.
d.
Install new tube assemblies as follows:
(1)
Insert end of tube as far as it will go into fitting to which tube is being Installed.
(2)
Install inverted nut into fitting and tighten it against compression sleeve with open end wrench.
Compression sleeve will clamp down around tube and conform to internal surface of fitting and inverted nut.
(3)
Repeat steps (1) and (2) for other end of tube as required.
1-28.
LOCKWIRE.
a.
Always use nonelectrical wire (Item 44, Appendix B).
b.
Drilled head screws and bolts usually do not require lockwiring if they are installed with self-locking nuts or
lockwashers.
c.
Three screws or bolts are the maximum number that may be lockwIred in a series when they are spaced 4-6
in. (10.2-15.2 cm) apart. The maximum number of closely-spaced multiple groups of screws or bolts to be lockwired is
limited to the number of units that can be lockwired with a 24 in. (61.0 cm) length of wire.
d.
Do not secure screws, bolts, or fittings which are spaced more than 6 in. (15.2 cm) apart. Lockwire these
fasteners to tiepoints 6 in. (15.2 cm) or less away.
TA701216
1-14
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