Filter Removal And Installation; Airbox Removal And Installation; Ignition System - Cessna T182 Series Service Manual

MODEL 182 & T182 SERIES SERVICE MANUAL
b.
Advance throttle to increase engine speed to
b.
Disconnect flexible compressor inlet (upper)
approximately 1000 RPM.
duct at airbox.
c.
Pull mixture control knob slowly and steadily
c.
Disconnect flexible carburetor heat (lower) duct
toward the idle cut-off position, observing tachometer,
from airbox.
then return control full IN (RICH) position before en-
d.
Disconnect carburetor heat control wire from
gine stops.
control arm on airbox. and remove clamp.
d.
Adjust mixture adjusting screw at upper end of
e.
Remove clamp attaching air filter box to airbox.
carburetor intake throat to obtain a slight and mo- f.
Remove screw attaching upper airbox support to
mentary gain of 25 RPM maximum at 1000 RPM
firewall stiffener.
engine speed as mixture control is moved from full g.
Remove four screws attaching airbox to firewall
IN (RICH) toward idle cut-off position. Return con-
and remove airbox. retaining washers for installation.
trol to full IN (RICH) to prevent engine stoppage.
h.
Reverse the preceding steps for reinstallation.
e.
If mixture is set too LEAN, engine speed will
Rig carburetor heat control according to paragraph
drop immediately, thus requiring a richer mixture.
11A-69.
Turn adjusting screw OUT (counterclockwise) for a
richer mixture.
11A-54.
CLEANING AND INSPECTION.
Clean metal
f.
If mixture is set too RICH. engine speed will
parts of the induction airbox with Stoddard solvent or
increase above 25 RPM, thus requiring a leaner equivalent.
Inspect for cracks, dents, loose rivets.
mixture.
Turn adjusting screw IN (clockwise) for a etc.
Minor cracks may be stop-drilled. In case of
leaner mixture.
continued or severe cracking, replace airbox. In-
spect gaskets and install new gaskets, if damaged.
NOTE
Check manually-operated air door for ease of oper-
ation and proper rigging.
After each adjustment to the idle mixture,
run engine up to approximately 2000 RPM
11A-54A.
INSTALLATION OF INLET DUCTS. When
to clear engine of excess fuel to obtain a
cutting duct assembly to length, the support wire
correct idle speed.
should be cut back far enough to bend back (mini-
mum bend radius 1,8 inch) under the clamp and pro-
trude 1/4 inch. Do not break the bond between wire
11A-50. INDUCTION AIR SYSTEM.
Ram air enters
and fabric Before tightening clamp, make sure ther-
the induction air system through an intake port and a
is no twist or torque on hose. If hose is wrapped
filter on the aft left side of the cowling. It is ducted
with MIL-Y-1140 cord in place of wire support, the
to the airbox, and onward to the turbocharger com-
same installation procedures applies except; MIL-Y-
pressor section, located under and to the left of 1140 has no miumum bend radius requirement.
engine.
After compression, the air is forced through The minimum installed bend radius for wire
the carburetor, where fuel is intermixed and then to
the intake manifold through the throttle valve. The
supported
hose in the plane bend is as
mixture is distributed to each cylinder as demanded Neoprene, one-ply hose -1/4 diameter of the
1. Neoprene, one-ply hose -1/4 diameter of the
through separate intake pipes.
A butterfly valve, maximum how dimension.
located in the airbox may be operated manually from . Neoprene two-ply how and silicone, one-ply
the cockpit to permit selection of carburetor heated hose-1/3 diameter of the minimum hose dimension.
air, which in this application is also alternate air 4.
Silicone, two-ply hose - 1/2 diameter of the
selection. When carburetor heat is selected, heated
maximum hose dimension.
air is drawn from a shroud on the left exhaust stack
assembly. 11A-55. IGNITION SYSTEM.
11A-56.
DESCRIPTION.
The ignition system is com-
11A-57. FILTER REMOVAL AND INSTALLATION.
prised of dual magnetos, two spark plugs in each
a. Remove upper left cowling according to paragraph
cylinder, an ignition wiring harness, an ignition switch
11A-3.
mounted on the instrument panel and required wiring
b. Release the four quick-release fasteners securing
between the ignition switch and magnetos.
the filter assembly to the airbox.
c.
Reverse the preceding steps for installation. 11A-57.
TROUBLE SHOOTING. (Refer to Section 11.)
11A-52. CLEANING AND INSPECTION. Clean and
11A-58. MAGNETOS.
inspect filter in accordance with instructions in
Section 2.
11A-59. DESCRIPTION. The Bendix D-2000 series
magneto consists of two electrically independent
NOTE ignition circuits. The magneto uses an impulse
coupling to provide reliable ignition at engine crank-
If filter gasket becomes loose, bond with ing speed.
Suppression of breaker contact point
EC-1300L or equivalent. arcing is accomplished by feed-thru type capacitors
mounted in the magneto cover which forms a part of
11A-53.
AIRBOX REMOVAL AND INSTALLATION. the magneto harness assembly.
a.
Remove upper left cowl in accordance with para-
graph 11A-3.
11A-60. REMOVAL AND INSTALLATION.
11A-14