Cessna 177 SERIES Service Manual

11-35.
TROUBLE
SHOOTING
(Cont).
TROUBLE PROBABLE CAUSE REMEDY
HIGH OIL TEMPERATURE
Oil
congealed in cooler.
This condition
can occur only
in
(CONT).
extremely cold temperatures.
If congealing
is suspected,
use
an external
heater or
a heated
hangar
to warm the congealed
oil.
OIL LEAK AT FRONT OF Damaged crankshaft seal. Replace.
ENGINE.
OIL LEAK AT PUSH ROD Damaged push rod housing oil seal. Replace.
HOUSING.
11-36.
FULL-FLOW
OIL
FILTER.
(Refer
to figure
these
are generally
of
no consequence
and
11-3.)
should not be
confused with
particles pro-
duced by impacting, abrasion or pressure.
11-37.
DESCRIPTION.
An
external
oil filter may
be
Evidence
of internal
damage found
in the
oil
installed
on the engine.
The filter
and filter adapter
filter element
justifies further
examination
replace the regular
engine oil pressure
screen and
to determine
the cause.
cast chamber
on the
accessory
housing.
The filter
adapter
incorporates
mounting
provisions
for the oil
f.
Wash lid (7),
hollow stud
(12) and filter
can (10)
cooler
bypass valve
and the oil temperature
sensing
in solvent and
dry with compressed
air.
bulb. If the filter element should become clogged,
the bypass valve
allows engine oil to flow to the
en- NOTES
gine oil
passages.
When installing a new filter element (9), it
11-38.
REMOVAL AND
INSTALLATION. (Refer
to is important
that all gaskets
are clean, lu-
figure 11-3.)
bricated and positioned
properly, and that
the correct amount
of torque is
applied to
NOTE
the hollow stud (12).
If the stud is
under-
torqued,
oil leakage
will occur.
If
the stud
Filter
element replacement
kits are
avail-
is
over-torqued,
the filter can
might possi-
able from
the Cessna
Service
Parts Center.
bly be deformed,
again
causing
oil leakage.
a. Remove
engine
cowling
in accordance
with para-
* Lubricate
all
rubber
grommets
in the
new
graph 11-3.
filter element,
lid gaskets
and metal
gas-
b.
Remove
both safety
wires
from filter
can
and
ket
with clean
engine
oil or
general
purpose
unscrew
hollow
stud
(12)
to detach
filter
assembly
grease
before
installation.
Dry
gaskets
from
adapter
(2) as
a unit.
Remove
assembly
from
may cause
false
torque
readings,
again
aircraft
and discard
gasket
(5).
resulting
in oil
leakage.
c.
Deleted.
* Before assembly,
place a straightedge
across
d. Lift lid
(7) off filter can
(10) and discard
gasket
bottom of
filter can. Check
for distortion
or
(8).
out-of-flat
condition greater
than
0.010 inch.
e. Pull filter
element (9) out
of filter can (10).
Install a new
filter can if
either of these
con-
ditions exist.
NOTE
*After installing a new gasket on lid, turn lid
Before
discarding
removed
filter element
(9),
over. If
gaskets falls,
try a different
gasket
remove
the outer
perforated paper
cover;
and repeat test.
If this gasket
falls off, in-
using a sharp
knife, cut through
the folds of
stall
a new lid.
the filter element at both ends. Then, care-
fully unfold the pleated
element and examine
g. Inspect
the adapter gasket
seat for gouges, deep
the material trapped in the element for evi-
scratches, wrench marks and
mutilation. If any of
dence
of internal engine
damage, such as
these conditions
are found, install
a new adapter.
chips
or particles from bearings. In new or
h. Place a new filter element (9) in can
(10) and in-
newly overhauled engines, some small par-
sert the hollow stud (12) with a
new metal gasket (11)
tides or metallic shavings
might be found, in place,
through the filter can and element.
11-16
Change
4

Cessna 177 SERIES Specifications

General

Manufacturer	Cessna
Engine Type	Piston
Wingspan	35 ft 6 in (10.82 m)
Seating Capacity	4
Number Built	4, 295
Engine	Lycoming O-360
Horsepower	180 hp
Maximum Takeoff Weight	2, 500 lb (1, 134 kg)