Cessna 177 SERIES Service Manual

When new anchor
bolts are to be installed,
press out
punch until lining is firmly
against back plate.
old bolts and install new
bolts with a soft mallet. g. Realign
the lining on the back plate and install
f. Inspect
wheel brake
disc for
a minimum thick-
and set rivets
in the remaining
holes.
ness of 0.190
inch. If brake disc
is below minimum
h. Install a
new lining on pressure
plate in the
same
thickness,
install a new
part.
manner.
i. Position
pressure plate on anchor
bolts and place
5-55. WHEEL
BRAKE REASSEMBLY.
(Refer to figure cylinder
in position so that
anchor bolts slide into the
5-4.)
torque plate.
j. Install back plate with bolts and washers.
NOTE
5-59. BRAKE SYSTEM BLEEDING.
Lubricate
parts with clean
hydraulic fluid
during brake assembly.
NOTE
a. Refer
to figure 5-4 as
a guide while
reassembling
Bleeding
with a
clean hydraulic
pressure
wheel
brakes.
source connected-to
the wheel
cylinder
bleeder
is recommended.
5-56. WHEEL
BRAKE INSTALLATION.
a. Place brake
assembly in position
with pressure
a. Remove brake
master cylinder
filler plug
and
plate
in place.
screw
flexible hose
with appropriate
fitting into the
b. Install
back plate.
filler
hole at top
of the master
cylinder.
b.
Immerse opposite end
of flexible hose in
a con-
NOTE
tainer with enough
hydraulic fluid
to cover end of
hose.
If torque
plate was removed,
install
as
c. Connect
a clean hydraulic
pressure
source, such
the axle is installed,
or install on axle.
as a hydraulic
hand pump or
Hydro-Fill unit, to the
If the brake
disc was removed,
install
bleeder
valve in the
wheel cylinder.
as wheel
is assembled.
d. As fluid
is pumped
into the system,
observe the
immersed end of the
hose at the master brake
cylinder
5-57. CHECKING
BRAKE LINING WEAR.
New brake for evidence
of air bubbles being
forced from the
lining should be installed
when the existing
lining has brake
system. When bubbling
has ceased remove
worn to a minimum
thickness of 3/32 inch.
A 3/32 bleeder
source from wheel
cylinder, and tighten the
inch thick
strip of material
held adjacent
to each lin-
bleeder valve.
ing
can be used
to determine
amount of wear.
The
e. Remove flexible
hose
from master
brake cylinder
shank end of
a drill bit of the correct
size can also
and
install filler plug.
be used to
determine wear
of break linings.
5-63. BRAKE LINING CONDITIONING. The brake
5-58.
BRAKE LINING INSTALLATION.
(Refer to
lining pads used in this
assembly are either non-asbestos
figure 5-4.)
organic
composition or iron based
metallic composition.
a. Remove bolts
securing back
plate, and remove
Brake
pads must be
properly conditioned
(glazed) before
back plate.
use in order to provide
optimum service life.
This is ac-
b. Pull brake
cylinder out
of torque plate
and slide
complished
by a brake burn-in.
Burn-in also
wears off
pressure plate
off anchor bolts.
brake
high spots prior
to operational
use. If brake use
is
c. Place
back plate on
a table with lining
side down
required
before burn-in,
use breaks intermittently
at
flat. Center
9/64 inch (or slightly
smaller) punch
in
LOW taxi speeds.
the rolled rivet.
Hit the punch sharply
with a ham-
mer Punch out all rivets securing the linings to the UI
back plate
and pressure
plate
in the same
manner.
Brake burn-in must be performed by a qualified
NOTE
person familiar
with acceleration and stop
distance of the aircraft.
A rivet
setting
kit, Part
No. R561,
is avail-
able from the Cessna
Parts Distribution (CPD
2). a. Non-asbestos
Organic Composition
Burn-in.
The kit consists
of an anvil
and punch.
1. Taxi the
aircraft for 1500
feet, with engine
at
1700 rpm,
applying brake pedal
forces as needed
to
d. Clamp
the flat side of the
anvil in a vise.
maintain
5 to 10 M.P.H. (5 to
9 knots).
e.
Align new lining
on back plate
and place brake
2. Allow brakes
to cool for 10
to 15 minutes.
rivet in hole with
nvet head in the
lining. Place the
3. Apply brakes
and check to
see if a high throttle
head
against the anvil.
static
engine runup
can be held with
normal pedal
f.
Center rivet setting punch
on lips of rivet.
force. If
so, conditioning burn-in
is complete.
While holding
back plate down firmly
against lining,
4. If static runup
cannot be held, repeat
Steps
hit punch
with hammer
to set rivet. Repeat
blows on
1 thru 3 as
needed.
5-22 Change

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)