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Cessna 182 1978 - Use of Locking Clips; Use of Lockwashers; Use of Self-Locking Nuts

Cessna 182 1978
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MODEL
182
&
T182
SERIES
SERVICE
MANUAL
1-11.
USE
OF
LOCKING
CLIPS. 5.
When
loosening
of
threaded
parts
would
not
a.
Safetying
Turnbuckles.
(See
Figure
1-6.)
endanger
safety
of
airplane
or
people.
1.
Prior
to
safetying,
both
threaded
terminals
6.
When
corrosion
encouraged
by
gouging
shall
be
screwed
an
equal
distance
into
turnbuckle aluminum
or
magnesium
alloys
by
edges
of
teeth
on
body
and
shall
be
screwed
in
at
least
so
far
that
not
tooth-locked
washers
would
not
cause malfunctioning
more
than
three
threads
of
any
terminal
are
exposed
of
parts
being
fastened
together.
outside
body.
2.
After
turnbuckle
has
been
adjusted
to
its
1-13.
USE
OF
SELF-LOCKING
NUTS.
locking
position,
with
slot indicator
groove
on
termi-
a.
Restrictions.
nals
and
slot
indicator
notch
on
body
aligned,
insert
1.
Self-locking
nuts
cannot
be
used
under
cer-
end
of
locking
clip
into
terminal
and
body
(refer
to
tain
conditions.
Figure
1-6)
until
U-curved
end
of
locking
clip
is over
(a)
Used,
reworked,
or
reprocessed
nuts
hole
in
center
of
body.
should
not
be
installed
for
any
application.
(a) Press
locking
clip
into
hold
to
its
full
ex-
(b)
Do
not use
if
at
joints
in
control
systems
tent.
for
singular
attach
points.
(b)
Curved
end
of
locking
clip
will
expand
and
(c)
Do
not use
on
externally
threaded
parts
latch
in
body
slot.
that
serve
as
an
axle
of
rotation
for
another
part
(c)
To
check
proper
seating
of
locking
clip,
where
tensional
(torque)
loads
can
cause
nut
to
loosen
attempt
to
remove
pressed
"U"
end
from
body hole
and/or
become
separated.
Examples
are
pulleys,
lev-
with
fingers
only.
ers,
linkages,
and
cam
followers.
NOTE
NOTE
Do
not
use
tool
as
locking
clip
could
be
dis-
Self-locking
nuts
can
be
used
when
threaded
torted.
parts
are
held
by
a
positive
locking
device
that
requires
shearing
or
rupture
before
torsional
3.
Locking
clips
are
for
one
time
use
only
and
loads
can
act
on
threaded
parts.
shall not
be
re-used.
4.
Both
locking
clips
may
be
inserted
in
same
(d)
Do
not
use
where
a
loose
nut,
bolt,
or
hole
of
turnbuckle
body
or
in
opposite
holes of
screw
could
fall
or
be
drawn into
an
area
that
turnbuckle
body.
would
impede
or
damage
or
otherwise
distort
opera-
tion.
1-12.
USE
OF
LOCKWASHERS.
(e)
Do
not
use
to
attach
access
panels
and
a. Lockwashers
can
be
used
only
under
the
follow-
doors
or
to assemble
components
that
are
routinely
ing
conditions.
disassembled
or
removed
for
access
and
servicing.
1.
When
self-locking
feature
cannot
be
provided
(f)
In
general,
do
not
use
self-locking
nuts
in
externally
or
internally
threaded
part.
where
loss
of
bolt
affects
safety
of
flight.
2.
When
a
cotter
pin
cannot
be
used
to
prevent
2.
Bolts,
studs, or
screws,
excluding
Hi-Locks,
rotation
of
internal
threads
with
respect
to
external
must
extend
through
self-locking
nut
for
a
length
threads,
equivalent
of
two
threaded
pitches.
This length
3.
When
lockwire
cannot
be
used
to
prevent
includes chamfer.
loosening
of
threaded
parts.
3.
Self-locking
nuts
which
are attached
to
struc-
4.
When
fastening
is not
used
for
fabrication
of
ture
shall
be
attached
in
a
positive
manner
to
elimi-
primary
structure.
nate
possibility
of
their
rotation or
misalignment
when
tightening
is
to
be
accomplished
by
rotating
bolts to
structure,
and
permit
replacement
of
nuts.
1-14
Revision
1

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