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Cessna 177 SERIES Service Manual

Cessna 177 SERIES
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11-42.
INSTALLATION.
a.
Start
and
run
engine
until
the
oil
and
cylinder
a.
Using
a
good
grade
of
gasket
sealant,
install
a
head
temperatures
are
in
the
normal
operating
range.
new
gasket
on
accessory
housing
adapter
mount
pad.
b.
Check
the
magnetos
for
proper
operation
in
ac-
Note
that
one side
of
the
gasket
is
marked
ENGINE
cordance
with
paragraph
11-64.
SIDE;
this
side
of
the
gasket
must
be
installed
toward
c.
Clear
the
engine
by
advancing
the
rpm
to
approxi-
the
engine.
mately
1000,
then
retard
the
throttle
to
the
idle
posi-
b.
Install
adapter
on
mounting
pad and
install
bolts,
tion.
The
engine
rpm
should
stabilize
at
600±25.
If
washers
and
nut.
Use
lockwashers
next
to
bolt
heads
not,
adjust
the
idle
speed
screw
IN
to
increase
and
and
nut.
OUT
to
decrease
rpm.
c.
Tighten
bolts
and
nut
to
75
lb-in.
d.
Install
oil
temperature
bulb
in
adapter.
NOTE
e.
Install
filter
assembly
in
accordance
with
para-
graph
11-38.
An
engine
should
idle
smoothly,
without
f.
Install
any
components
removed
for
access.
excessive
vibrations.
The
idle
speed
should
be
high
enough
to
maintain
idling
11-43.
OIL
COOLER.
oil
pressure
and
to
preclude
any
possi-
bility
of
engine
stoppage
in
flight
when
11-44.
DESCRIPTION.
The
external
oil
cooler
is
the
throttle
is
closed.
mounted
on
the
firewall.
Flexible
hoses
carry
the
oil
to
and
from
the
cooler.
Cooling
air
for
the
cooler
d.
After
the
idle
speed
has
stabilized
(600±25
rpm),
is
ducted
from
the
upper
right
engine
baffle
to
the
move
the
mixture
control
slowly
toward
the
IDLE
shroud
covered
oil
cooler.
Exhaust
air
from
the
CUT-OFF
position
and
observe
the
tachometer
for
cooler
is
discharged
into
the
engine
compartment.
any
minute
change
during
this
manual
leaning
proce-
At
each
engine
oil
change,
drain
the
oil
cooler.
dure.
e.
Quickly
return
the
mixture
control
to
the
FULL
11-45.
ENGINE
FUEL
SYSTEM.
RICH
position
before
the
engine
stops.
f.
A
momentary
increase
of
approximately
25
rpm
11-46.
DESCRIPTION.
A
single
barrel,
float-type,
while
slowly
manually
leaning
the
mixture
is
most
up-draft
carburetor
is
installed
on
the
engine.
The
desirable,
an
increase
of
more
than
25
rpm
indicates
carburetor
is
equipped
with
a
manual
mixture
control
a
rich
idle
mixture
and
an
immediate
decrease
in
rpm
and
an
idle
cut-off.
For
repair
and
overhaul
of
the
(if
not
preceded
by a
momentary
increase)
indicates
carburetor
refer
to
the
manufacturer's
overhaul
and
a
lean
idle
mixture.
repair
manual.
g.
If
the
idle
mixture
is
too
rich,
turn
the
idle
mix-
ture
adjustment
center
screw
one
or
two
notches
in a
11-47.
CARBURETOR.
clockwise
direction
as
viewed
from
the
aft
end
of
the
unit,
then
repeat
steps
"d"
through
"f."
11-48.
REMOVAL
AND
INSTALLATION.
a.
Pull
fuel
shut-off
valve
control
to
the
OFF
posi-
NOTE
tion.
b.
Remove
engine
cowling
in
accordance
with
para-
After
each
adjustment
to
the
idle
mixture,
run
graph
11-3.
engine
up
to
approximately
1800
rpm
to
clear
c.
Drain
fuel
from
strainer
and
lines
with
strainer
the
engine
of
excess
fuel
and
obtain
a
correct
drain
control.
idle
speed.
d.
Disconnect
throttle
and
mixture
controls
at
car-
buretor.
Note
the
EXACT
position,
size
and
number
h.
If
the
idle
mixture
is
too
lean,
turn
the
idle
mix-
of
washers
and
spacers
for
reference
on
reinstalla-
ture
adjustment
center screw
one
or
two
notches
in a
tion.
counterclockwise
direction
as
viewed
from
the
aft
end
e.
Disconnect
and
cap
or
plug
the
three
fuel
lines
of
the
unit,
then
repeat
steps
"d"
thru
"f."
at
carburetor.
i.
This
method
of
adjustment
will
give
the
desired
f.
Remove
induction
airbox
in
accordance
with
idle
rpm.
If
the
adjustments
do
not
remain
stable,
paragraph
11-53.
check
the
throttle
and
mixture
linkage
for
evidence
of
g.
Remove
nuts
and
washers
attaching
carburetor
wear
and
improper
rigging.
Any
looseness
of
the
to
intake
manifold
and
remove
carburetor.
throttle
and
mixture
linkage
will
cause
erratic
idling.
h.
Reverse
the
preceding
steps
for
reinstallation.
In
all
cases,
allowance
should
be
made
for
the
effect
Use
new
gaskets
between
carburetor,
intake
mani-
of
weather
condition
upon
idling
adjustment.
The
re-
fold
and
induction
airbox.
lation
of
the
aircraft
to
the
prevailing
wind
direction
i.
Rig
throttle
and
mixture controls
in
accordance
will
have
an
effect
on
the
propeller
load
and
engine
with
paragraphs
11-69
and
11-70.
Check
carburetor
rpm.
It
is
advisable
to
make
idle
adjustments
with
throttle
arm
to
idle
stop
arm
attachment
for
security
the
aircraft
crosswind.
and
proper
safetying
at
each
normal
engine
inspection
in
accordance
with
figure
11-5.
11-50.
INDUCTION
AIR
SYSTEM.
11-49.
IDLE
SPEED
AND
MIXTURE
ADJUSTMENTS.
11-51.
DESCRIPTION.
Ram
air
to
the
engine
enters
Since
idle rpm
may
be
affected
by
idle
mixture
ad-
the
induction
airbox
through
the
induction
air
filter.
justment,
it
may
be
necessary
to
readjust
idle
rpm
From
the
induction
airbox
the
air
is
directed
to
the
after
setting
the
idle
mixture.
inlet
of
the
carburetor,
mounted
on
the
lower
side
of
the
engine
oil
sump,
through
the
carburetor
to
the
11-18
Change
3

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Cessna 177 SERIES Specifications

General IconGeneral
ManufacturerCessna
Engine TypePiston
Wingspan35 ft 6 in (10.82 m)
Seating Capacity4
Number Built4, 295
EngineLycoming O-360
Horsepower180 hp
Maximum Takeoff Weight2, 500 lb (1, 134 kg)

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