Cessna 182 1978 - Throttle and Waste Gate Control

MODEL 182 & T182 SERIES SERVICE MANUAL
a. Moisture
check.
"BOTH" position
to clear the opposite set
of plugs.
1. Remove
contact breaker point
assembly cover d.
Turn the switch to
the "L" position and note
the
and inspect cover, cables and capacitor for moisture RPM drop, then return the switch to the "BOTH"
in the area.
position.
2. Inspect
distributor
block high
tension outlets
e. The
RPM drop should
not exceed
175 RPM on
for
moisture.
either magneto
setting or show greater
than 50 RPM
3. If any
moisture is evident,
lightly wipe with
differential between
magneto settings.
A smooth
a soft, dry, clean,
lint-free cloth. RPM
drop-off past normal is usually a sign of a
too
lean
or too
rich mixture.
A sharp
RPM drop-off
defective harness lead
or a magneto out of
time. If
Do not
use gasoline or any other
solvent, as
there is doubt concerning
operation of the
ignition
these
will remove the wax
coating on some
system, RPM
checks at a leaner mixture
setting or
parts and
cause an
electrical leak.
at higher
engine speeds
will usually
confirm
whether
a deficiency exists.
b. Breaker contact compartment check.
1. Check
all parts
of the contact
breaker
assem-
NOTE
bly for security. Check distributor block high-tension
outlet
springs for
evidence of
spark erosion
and pro-
An absence
of RPM drop
may be an
indication
per height.
The end
of spring
should not be
more than
of
faulty grounding
of one
side of the
ignition
0. 422 inch
from top
of tower.
system,
a disconnected
ground
lead at
magneto
2. Check
breaker
contact
assembly
points
for
or
possibly
the magneto
timing
is set
too far in
excessive
wear,
burning, deep
pits and
carbon
de-
advance.
posits.
Breaker
points
may be cleaned
with
a hard
finish
paper.
If breaker
points
are
found
defective,
11A-65.
SPARK
PLUGS.
Two
18-mm
spark
plugs
install
a
new assembly.
Make no
attempts
to stone
are installed
in each
cylinder
and screw
into
helicoil
or
dress breaker
points.
Clean
new breaker
points
type thread
inserts.
The spark
plugs
are shielded
to
with clean
unleaded
gasoline and
hard finish
paper
prevent
spark plug
noise in the
radios and
have an
before
installing.
internal
resistor
to provide
longer
terminal
life.
3. Check
condition
of the cam
follower
felt.
Spark
plug
life will
vary
with operating
conditions.
Squeeze
felt
between
thumb and
finger.
If fingers
are
A spark
plug that
is kept
clean and
properly
gapped
not
moistened
with oil, re-oil
using
2 or 3 drops
of
will give better
and longer
service
than one that
is
lubricant
(Bendix Part No. 10-86527
or equivalent),
allowed to collect
lead deposits and is improperly
Allow approximately
30 minutes for felt
to absorb the
gapped.
lubricant.
Blot
off excess lubricant
with a clean,
NOTE
lint-free
cloth.
Too much
lubricant
could
foul
breaker
points and cause excessive
burning. Refer
to Section 2 for inspection interval.
4. Check capacitors
for looseness in the magneto
Refer to Section 2 for inspection interval.
cover of
the harness assembly
and for any physical
damage.
If equipment is
available, check the
capaci- plugs
at each inspection.
Install lower
tors for leakage, series resistance and
capacitance. and install upper spark
plugs in lower portion
The
capacitance should be 0. 34 to 0.41 microfarads.
of cylinders. Since deterioration
of lower
spark
plugs
is usually
more
rapid
than
that
NOTE
of the upper
spark
plugs,
rotating
helps pro-
long spark plug life.
Spring in capacitor outlet may cause
an indi- 11A-66. ENGINE
CONTROLS
cation
of a short
to ground
if an adapter
lead
is not used.
11A-67.
THROTTLE
AND WASTE
GATE CONTROL
(See figure 11A-5).
c.
If the trouble
has not been
corrected after
accom- (See
figure
plishing
the moisture and
breaker contact compart-
ment check,
check
magneto-to-engine
timing
in accor-
on throttle
shaft
(4) tighten
finger tight,
then install
dance with paragraph
11A-62. If timing
is incorrect, spring
pin (33) making certain
it does not protrude
remove
magneto and
adjust internal
timing in
accor-
beyond the
edge of the extension
dance
with paragraph 11A-61.
b. Assemble
bolt (5) through levers
(8, 14 and 17) in
d. Reinstall magneto and time to engine in
accor- the exact order as shown in figure
11A-5, and screw
dance
with paragraph
11A-62.
throttle
control
rod end
(20) on
bolt (5)
with lock
nut.
e. If the trouble has not been corrected, magneto NOTE
overhaul
or
replacement
is
indicated.
Make sure
nylon washers are
on retainer and
11A-64.
MAGNETO
CHECK.
not between AN960
washers and
retainers.
a. Start and
run engine until the
oil and cylinder
head temperatures are
in the normal operating
ranges. c. Be sure
that washers (26), cam (24)
and castellated
b.
Advance
engine
speed
to 1700
RPM.
nut
(23)
are
properly
installed.
c. Turn
the ignition
switch to the
"R" position
and
d. Install
throttle arm
bolt (9)
through lever
(8) and
note
the RPM
drop, then
return the
switch to
the
throttle
arm (3).
11A-18