Cessna 182 1978 - Battery; Tires; Nose Gear Shock Strut; Nose Gear Shimmy Damper

MODEL 182 & T182 SERIES SERVICE MANUAL
2-26. BATTERY. Battery servicing involves
adding anism within the hollow piston
rod. This is for ther-
distilled water to maintain the electrolyte even with mal expansion and contraction of the hydraulic fluid
the horizontal
baffle plate at the bottom of the filler in
the damper. The shimmy damper must be filled
holes, checking the battery cable connections, and completely with hydraulic fluid, free of en-
neutralizing and cleaning
off any spilled electrolyte trapped air
with the compensating piston bottomed in
or corrosion. Use bicarbonate of soda
(baking soda) the piston rod. Before
servicing the shimmy damper,
and water to neutralize electrolyte or corrosion. Fol- ascertain that the compensating piston is bottomed
low with a thorough
flushing with a wire brush,
then in the
piston rod. Service the
shimmy damper at
coat with petroleum
jelly before connecting. The bat-
least every 50 hours as follows:
tery box also should
be checked and cleaned if any
a. Remove shimmy damper from the aircraft.
corrosion is noted. Distilled water, not acid
or "re- b. While holding the shimmy
damper in a vertical
juvenators," should be used
to maintain electrolyte position with
the filler plug pointed upward, loosen
level. Check the battery every 100 hours (or at least filler plug to allow excess fluid to escape.
every 90 days) and oftener in hot weather. See Section c. Allow the spring to bottom out the floating pis-
16 for detailed battery removal, installation, and test- ton inside the shimmy damper rod.
ing.
d. When the fluid
stops flowing, insert a length of
stiff
wire through the air
bleed hole in the setscrew
at the end of the
piston rod until it touches
the float-
2-27. TIRES. Maintain tire pressure at the
pressure ing piston. The depth of insertion
should be 3-13/16
specified in figure 1-1.
When checking tire pressure,
inches.
examine tires for wear, cuts, bruises,
and slippage.
NOTE
Remove oil, grease, and mud from tires with soap
and water.
If the wire insertion is less than 3-13/16
inches, the floating piston is lodged in the
NOTE
shaft. If the
wire cannot be used to free
the piston,
the rod assembly
and piston
Recommended tire
pressures should
be main-
should
be replaced.
tained. Especially
in cold weather,
remember
that any
drop in temperature of
the air inside
e. After determining
that floating piston is
bottomed,
a tire causes a corresponding drop in air pres- move dampener rod to place piston to the end of the
sure.
barrel
opposite the filler plug.
f. Remove filler plug
and fill shimmy
dampener
2-28. NOSE GEAR SHOCK STRUT. The nose gear with hydraulic fluid.
shock
strut
requires
periodic
checking
to
ensure
that
NOTE
the
strut is
filled with
hydraulic
fluid
and
is inflated
to the correct
air pressure.
To service the nose
gear Be sure
that the shimmy dampener
and
shock strut,
proceed as
follows:
hydraulic
fluid are
at 70° to 80°F
while
a. Remove
valve cap
and release
all air.
filling the
shimmy dampener.
b. Remove valve housing assembly.
c. Compress
strut completely
(stops in contact
g.
Install filler
plug, and wash
dampener in clean-
with outer
barrel hub).
ing solvent and
wipe dry with a clean
cloth.
d. Oil level.
h. Install
dampener on aircraft.
1. Fluid used should comply with specification
MIL-H-5606.
NOTE
2. Fill strut to bottom of valve installation hole.
3. Maintain
oil level at bottom
of valve installa-
Keep shimmy
dampener, especially
the
tion hole. exposed portions of the dampener piston
e. Fully extend strut. shaft, clean to prevent collection of dust
f. Replace valve housing assembly.
and grit which could
cut the seals in the
g. With strut fully extended and nose wheel
clear dampener barrel.
Keep machined sur-
of ground, inflate strut to 55-60
psi. faces wiped
free of dirt and dust, using a
NOTE
draulic
fluid
(MIL-H-5606)
or
kerosene.
All surfaces
should be
wiped free of ex-
The
nose landing gear
shock strut will
cessive hydraulic
fluid.
normally require only a minimum amount
of service.
Maintain
the strut extension
2-30. HYDRAULIC
BRAKE
SYSTEMS.
Check brake
pressure
as shown
in Section 1.
Lubricate
master
cylinders and
refill with hydraulic
fluid as
landing gear as
shown in figure
2-5. Check
specified
in the inspection
charts.
Bleed the brake
the landing
gear daily for
general cleanli-
system of entrapped
air whenever
there is
a spongy
ness, security
of mounting, and
for hydrau-
response to the brake
pedals. Refer to Section
5 for
lic fluid
leakage.
Keep machined
surfaces
filling
and
bleeding of
the brake
systems.
wiped
free of dirt and
dust, using a
clean
lint-free cloth saturated with hydraulic 2-31. CLEANING.
fluid
(MIL-H-5606)
or
kerosene.
All sur-
faces should be wiped free
of excessive 2-32. GENERAL
DESCRIPTION. Keeping the air-
hydraulic fluid.
craft clean is important.
Besides maintaining the
trim
appearance
of the
aircraft, cleaning
lessens
the
2-29.
NOSE GEAR SHIMMY
DAMPER. The nose
possibility of corrosion
and makes inspection
and
gear
shimmy damper contains a compensating
mech- maintenance
easier.
2-12
Revision
1