Cessna T182 Series User Manual

MODEL
182
& T182
SERIES
SERVICE
MANUAL
1-6. GENERAL.
This
chapter
deals with
general
tor-
(d) Since
running
torque will
become
less due
que and
safetying
practices used
to ensure
security of
to nutbolt
re-use
(in accepted
applications),
this pro-
installation
and prevent overstressing of components.
cedure must be repeated
each time.
Special
torque values, when required,
are specified
(e) When necessary
to tighten from
bolt head,
with the specific component maintenance and installa- increase torque value by an amount equal to shank
tion instructions.
torque (torque required to turn
bolt when installed).
Measure with
a torque
wrench.
1-7. TORQUEING
PROCEDURES.
The importance
of
correct application
cannot be overemphasized.
Under-
torque can result
in unnecessary
wear of nuts
and
bolts as well as parts
they are holding
together. When
Average
insufficient
pressures are applied,
uneven loads will
be transmitted throughout assembly,
which may Dry torque required
result
in excessive wear or premature
failure due to
fatigue.
Overtorque
can
be equally
damaging
because
b.
Torque
Values
- Bolts and
Nuts. (See
Table
1-1.)
of failure
of a bolt
or nut from
overstressing
threaded
1. Tables
included
in this section
do
not apply
to
areas.
the following
exceptions:
a. Calculating
Torque.
There
are a
few simple,
but
(a) Sheet
metal
screws should
be
tightened
very important,
procedures
that should
be followed
to firmly,
but with no
specific torque
value.
assure that
correct torque
is applied:
(b) Screws
attached
to nutplates
should be
1. Calibrate torque wrench periodically
to assure tightened firmly, but with no
specific torque value.
accuracy; and
recheck frequently.
(c) Bolts, nuts,
and screws used in
control
2. When using a torque wrench adapter which systems and installations where required torque
changes distance from torque wrench drive to adapter would cause binding or interfere with proper opera-
drive.
the indicated
reading must
be adjusted for
tion
of parts.
desired torque reading. (See Figure 1-2.)
(d) Screws used with dimpled
washers should
3. Be sure that bolt and nut threads are clean not be drawn tight enough to eliminate washer
and dry unless otherwise specified. crown.
4. Determine
friction drag torque and add to
(e) Fasteners that have a specified
torque in a
specified dry torque value to ensure proper bolt utili- specific nstallation.
zation.
2.
The values shown in Table
1-1 are based on
(a) Hand-turn nut onto
bolt until it stops. parts being clean
and dry with no lubricants added.
(b) Using a torque wrench, measure runnin 3. Castellated nuts requiring cotter pins should
torque
(torque required to
turn nut on bolt).
be tightened
to low torque value. Torque
can be in-
(c)
This running torque
must be added to
creased to install
cotter pin, but should
never exceed
specified
dry torque
value to ensure proper
bolt utili-
maximum torque
value.
zation.
NOTE
EXAMPLE Self-looking castellated nuts, MS17825 and
Average running torque for a nut = 15 in.-lbs. MS17826, require a separate torque range.
Dry torque required
= 125 5 in.-lbs. These
values are shown separately in torque
Final
torque
wrench
reading
= 140
± 5
in.-lbs.
value
tables.
1-4
Revision
1

Cessna T182 Series Specifications

General

Engine Type	Lycoming IO-540-AB1A5
Horsepower	230 hp
Seating Capacity	4
Service Ceiling	18, 100 feet
Takeoff Distance	1, 600 feet
Landing Distance	1, 350 ft
Type	Single-engine
Max Takeoff Weight	3, 100 lb
Wingspan	36 ft
Length	29 ft
Height	9 feet 3 inches
Fuel Capacity	92 US gal (348 L)