Cessna 182 1978 - Cotter Pin Minimum Size; Cotter Pin Temperature and Use; Use of Cotter Pins

MODEL
182 &
T182
SERIES
SERVICE
MANUAL
1-10.
USE OF
COTTER
PINS.
(6) Install
cotter
pin with
head firmly
in
slot of
a. Cotter
Pin
Installation.
Castellated
nuts
and pins
nut
with axis
of eye
at right
angles to
bolt shank.
may
be
safetied
with cotter
pins
or
lockwire.
The
Bend
prongs
so
that head
and
upper
prong
are firmly
preferred
method
is to use
cotter
pins.
seated
against
bolt
(see figure
1-5).
1.
Select
cotter
pin material
in accordance
with
temperature,
atmosphere,
and
service
limitations
(see
Table
1-5).
COTTER
PIN
- MINIMUM
SIZE
THREAD
SIZE MINIMUM
PIN
SIZE
COTTER
PINS (MS24665)
0028
MATERIAL
TEMP
USE
8
0.044
Carbon
Steel
Up to 450°F
Pins
that contact
cadmium-
10
0.044
plated
surfaces.
1/4
0.044
5/16
0.044
General
Applications
3/8
0.072
7/16
0.072
Normal
Atmospheres
1/2
0.072
9/16
0.086
Corrosion- Up
to 800°F Pins that contact
cor-
5/8
0.086
Resistant
rosion-resistant steel.
3/4 0.086
7/8
0.086
Corrosive
atmospheres
1
0.086
1-1/8
0.116
1-1/4
0.116
Table 1-5.
Cotter
Pin
1-3/8
0.116
Temperature and Use 1-1/2 0.116
2.
Cotter
pins shall
be
new upon
each
applica-
tion.
3. When nuts are to be secured
to fastener with
Table 1-6. Cotter Pin
cotter
pins,
tighten
nut to low
side
(minimum)
of
Minimum
Size
applicable
specified
or selected
torque
range,
unless
otherwise
specified,
and
if necessary,
continue
tight-
(7)
In pin
applications,
install
cotter
pin
with
ening
until slot
aligns
with
hole.
In no case
shall
you
axis of
eye parallel
to
shank
of clevis
pin
or rod
end.
exceed
high
side
(maximum)
torque
range.
Bend
prongs
around
shank
of pin
or rod
end (see
4. If more
than 50 percent of cotter
pin diameter Figure 1-5).
is above
nut castellation.
a washer
should be
used
under
nut
or a
shorter
fastener
should
be
used.
A
maximum
of
two washers
may
be permitted
under
a
Cadium-plated
cotter
pins should
not
be used
in
nut.
applications
bringing
them
in
contact
with fuel,
5. The
largest
diameter
cotter
pin
which
hole
hydraulic
fluid,
or synthetic
lubricants.
and
slots
will
accommodate
should
be used,
but
in no
application
to a nut,
bolt,
or
screw
shall
pin
size
be
less
than
sizes described
in Table
1-6.
1-12 Revision 1