Cessna T182 Series User Manual

MODEL 182 & T182 SERIES SERVICE MANUAL
To locate the compression stroke of number one cy- c. Connect a timing light to the capacitor terminal
linder, remove the lower spark plugs from each cy- at the front of the magneto and to a good ground.
Under except number one cylinder. Remove the top d. Turn propeller back a few degrees (opposite of
plug from number one cylinder. Place thumb of one normal rotation) to close the contact points.
hand over the number one cylinder spark plug hole
and
rotate the crankshaft in the direction
of normal
NOTE
rotation until the compression stroke is indicated by
positive pressure inside the cylinder
lifting the thumb Do not turn the
propeller back far enough to
off the spark plug hole. After the compression
stroke engage the impulse coupling
or the propeller
is obtained, locate number one
piston at its advanced will have to be
turned in normal direction of
firing position. Locating
the advanced firing position rotation
until the impulse coupling releases,
of number one
cylinder may be obtained by use of a
then backed up to slightly before the firing
timing
disc and pointer, Timrite,
protractor and
position.
piston locating gage
or external engine timing
marks
alignment.
e.
Slowly advance the propeller in the normal direc-
tion of rotation until
the timing light indicates
the con-
NOTE
tact points breaking. Magneto mounting
clamps may
be loosened
so that the magneto
may be shifted
to
External engine timing marks are located on break the points at the correct firing position.
a bracket
attached to the starter adapter,
f. Tighten magneto mounting nuts
and recheck
with a timing mark on the alternator drive timing.
pulley as the reference
point. g.
Repeat steps "a" through "f" for the other mag-
neto.
In all cases, it must be definitely determined that the h. After both magnetos have been timed, check syn-
number
one cylinder is at the correct firing position
chronization of both magnetos. Magnetos
must fire
and on the compression stroke, when the crankshaft at the same time.
is turned in its normal
direction of rotation.
After i. Remove
timing devices from
magneto and engine.
the engine has
been placed in the correct
firing posi-
j. Connect spark plug
leads to their correct
mag-
tion, install and time the magneto to the engine in the neto outlets.
following manner.
NOTE
NOTE
The No. 1 magneto outlet is the one closest
Install
the magneto
drive
coupling
retainer
to
the ventilation
plug
on the
side of
the
and rubber bushings into the magneto drive magneto having the manufacturer's insignia.
gear hub slot.
Insert the
two rubber
bush-
The magneto
fires
at each successive
outlet
ings into the retainer
with the chamfered
in clockwise
direction. Connect
No. 1 mag-
edges
facing
toward the
front of the
engine.
neto outlet
to No.
1 cylinder.spark
plug
lead,
No. 2 outlet to the next cylinder to fire, etc.
a. Turn
the magneto
shaft until the
timing marks
Engine
firing order
is listed in paragraph
visible
through the
ventilation
plug holes
are aligned
11-12.
(red-to-red or black-to-black) and insert a timing
pin (or 0. 093 inch 6-penny nail) through the timing
hole in the bottom
of the magneto next to
the flange k.
Connect toggle switch
(primary) lead to the ca-
and into the mating
hole in the rotor shaft. This
pacitor terminal on the magneto.
locks the magneto approximately in the firing posi-
tion
while installing
on the engine.
NOTE
NOTE Magneto (primary) lead nut torque range is
13-15 in. -lbs. Exceeding this torque range
If the magneto
drive gear
was disengaged
could result
in possible
condenser damage.
during
magneto removal,
hold the magneto
in the horizontal position it will occupy 1. Inspect magneto installation and install engine
when installed,
make certain that
the drive
cowling in accordance
with paragraph
11-3.
gear coupling slot is aligned with the mag-
neto coupling
lugs. If it
is not aligned, pull
the magneto
drive gear out
of mesh with its
11-78. MAINTENANCE.
Refer
to Section 2
for in-
drive gear and rotate it to the aligned
angle, spection intervals for
the breaker compartment. Re-
then push it back into mesh.
DO NOT WITH- fer to Section
2 for intervals for checking magneto-
DRAW
THE MAGNETO DRIVE
GEAR FROM
to-engine timing. If
timing is 24 (plus 0,
minus 2),
ITS OIL SEAL.
b. After
magneto gasket
in place, position the
magneto
on the
engine
and secure,
then
remove
the
timing pin from the
magneto. Be sure
to remove
this pin
before turning
the propeller.
11-26 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)