Cessna 177 SERIES Service Manual

num lacquer.
30
minutes, or
in an oven
not to exceed
121°C
c. Inspect
brake disc.
If excessively
warped
or
(250°F).
Using
an arbor
press, if
available,
scored,
or worn
to a thickness
of 0. 190-inch,
the
press
out the bearing
cup and
press in
the new
disc should
be replaced with
a new part. Sand smooth
bearing cup
while the wheel hub is
still hot.
small
nicks
and scratches.
d. Bearing
cups
and cones
must be
inspected
care-
5-11B.
MAIN
WHEEL
INSPECTION
AND
REPAIR.
fully
for damage
and discoloration.
After cleaning,
(McCauley Wheel
with Hub
and Capscrews.)
(Refer
repack cones with clean aircraft
wheel bearing grease
to figure 5-4.)
(Section
2) before
installation in
the wheel.
a.
Clean all metal
parts, grease
seal felts and
phenolic
spacers
in
cleaning
solvent
and
dry
thoroughly.
5-11.
MAIN WHEEL
REASSEMBLY.
(Cleveland
b. Inspect
wheel flanges
and
wheel hub
for cracks.
Wheel.
) (Refer
to figure
5-3A.)
Discard
cracked
wheel
flanges or
hub and
install new
a. Insert
thru-bolts
through
brake
disc and
position
parts.
Sand out
nicks,
gouges and
corroded
areas.
in the inner
wheel half,
using the
bolts to guide
the
When protective
coating
has been
removed,
clean the
disc.
Ascertain
that
the disc
is bottomed
in the wheel
area thoroughly,
prime
with zonc
chromate,
and
paint
half.
with
aluminum lacquer.
b. Position
the
tire and
tube with
the inflation
valve
c.
If excessively
warped
or
scored, or
worn to
a
through
hole
in outboard
wheel
half.
thickness
of
0. 190-inch,
brake
disc
should
be re-
c. Place
the
inner
wheel
half in
position
on out-
placed
with
a new
parts
Sand
smooth
small
nicks
and
board
wheel
half.
Apply
a light
force
to
bring
wheel
scratches.
halves
together.
Maintaining
the
light
force,
assem-
d.
Carefully
inspect
bearing
cones
and
cups for
ble
a washer
and
nut on
one thru-bolt
and
tighten
damage
and discoloration.
After
cleaning,
pack
snugly.
Assemble
the remaining
nuts
and
washers
on
bearing
cones
with
clean
aircraft
wheel
bearing
the
thru-bolts
and
torque
to the
value
specified
in
grease
(refer
to
Section
2) before
installing
in the
figure 5-4B.
wheel hub.
{CAUTION|
5-11C. MAIN
WHEEL
REASSEMBLY.
(McCaulev
Uneven-
orimo -
Wheel
with
Hub
and Capscrews.
)
(Refer
to figure
Uneven
or improper
torque of thru-bolt
nuts
5-4.
)
may cause failure of bolts, with
resultant a. Place wheel hub
in tire and tube with tube in-
wheel
failure
flation
stem
in
cutout
of wheel
hub.
*~wheel
failure.
b. Place
spacer and
wheel
flange on
inboard
side of
d.
Clean and repack
bearing
cones with
clean air-
wheel
hub (opposite
of tube
inflation stem),
then place
craft wheel bearing grease (Refer to Section 2. ).washer under head of each capscrew and start cap-
screws
into wheel hub
threads.
e.
Assemble
the
bearing
cones,
grease
seal
felts,
screws
into
wheel
hub
threads.
and rings into wheel halves. c. Place spacer and wheel flange on outboard side
f. Inflate tire
to seat tire beads, then
adjust to and
algn valve stem in
cutout i wheel flange.
correct
pressure.
d. Place washer
under head of each capscrew
and
start
capscrews
into
wheel
hub
threads.
5-11A.
MAIN
WHEEL
DISASSEMBLY.
(McCauley
Wheel
with
Hub
and Capscrews.)
(Refer
to
figure
CAUTN
5-4. )
a.
Remove
valve
core and
deflate
tire
and tube.
Be sure
that
spacers
and wheel
flanges
are
Break
tire beads
loose
from
wheel
flanges.
seated
on
flange
of wheel
hub. Uneven
or im-
proper
torque of
capscrews
can cause
failure
WARNING
of
capscrews with
resultant
wheel failure.
e.
Tighten capscrews
evenly and
torque to the
value
Injury
can
result
from
attempting
to remove
specified
in
figure
5-4B.
wheel
flanges
with
the tire
and tube
inflated.
f. Clean
and pack
bearing
cones
with
clean aircraft
Avoid
damaging
wheel
flanges
when
breaking
wheel bearing
grease.
(Refer
to Section
2 for
grease
tire
beads
loose.
A scratch,
gouge
or
nick
type.)
in
wheel
flanges
could
cause
wheel
failure.
g. Assemble
bearing
cones,
grease
seal
felts
and
retainer
into wheel
hub.
b.
Remove
capscrews
and
washers.
h. Inflate
tire
to seat
tire beads,
then
adjust
to cor-
c.
Separate
wheel
flanges
from
wheel
hub.
Retain
rect
tire
pressure.
Refer
to
figure
1-1 for
correct
spacers
between
wheel
flanges
and wheel
hub.
tire
pressure.
d. Remove
wheel
hub
from
tire and
tube.
e. Remove
retainer
rings.
grease
seal retainers,
grease
seal
felts
and
bearing
cones
from
wheel
hub.
NOTE
The
bearing
cups
are
a press
fit
in the
wheel
hub and
should not
be removed
unless
a new
part
is
to be installed.
To
remove
the
bear-
ing cup,
heat
wheel
hub
in boiling
water
for
5-6B
Change
7

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)