Cessna T188C - Page 28

MODEL 188 & T188 SERIES SERVICE MANUAL
NOTE
outside
of the sealed
area with
tape or
to the
inside of
the sealed area
with safety
wire to
Corrosion
preventive mixture consists
of one prevent
wicking of moisture into the
sealed
part
compound
MIL-C-6529,
Type
, mixed
area.
with three parts new lubricating oil of the
grade recommended
for service. During
n. Drain corrosion
preventive mixture from
engine
all
spraying operations, corrosion
pre- sump and
reinstall drain plug or close
drain valve.
ventive
mixture is
preheated to
221 F to
250F.
NOTE
c.
Immediatly after filling the oil
sump with cor-
The corrosion-preventive mixture
is harmful
rosion preventive mixture,
fly the aircraft for a
to paint and should be wiped
from painted sur-
period
of time
not to exceed
a maximum
of 30 min-
faces immediately.
utes.
d. After
flight, with
engine operating
at 1200 to 1500
o. Attach
a warning placard
on the throttle
control
rpm
and induction
air
filter removed,
spray
corrosion
knob,
to the effect
that the
engine
contains no
lubri-
preventive
mixture
into induction
airbox,
at the rate
eating
oil.
Placard the
propeller
to the effect
that it
of
one-half gallon
per minute, until
heavy smoke
should
not be moved
while the engine
is in storage.
comes from exhaust stack,
then increase the spray
p. Prepare airframe for storage
as outlined in
until the engine is
stopped.
paragraph
2-11 thru step "f".
CAUTION
NOTE
Injecting
corrosion-preventive
mixture
too
As
an alternate method
of indefinite
storage,
fast can cause
a hydrostatic lock.
the aircraft
may be serviced in accordance
with paragraph 2-11, providing the aircraft is
e.
Do not
rotate propeller
after
completing
step
run-up
at maximum
intervals
of 90 days
and
"d."
then
reserviced
per paragraph
2-11.
f. Remove
all spark
plugs and
spray corrosion-
preventive
mixture, which
has been pre-heated
(221°
2-15. INSPECTION
DURING
STORAGE.
Aircraft
to 250
0
F) into all spark
plug holes to throughly cover
in indefinite storage shall
be inspected as follows:
interior surfaces
of cylinders.
a. Inspect cylinder
protex plugs each 7 days.
b. Change protex plugs if their color indicates an
NOTE
unsafe condition.
c. If the dehydrator plugs have changed color in one
To throughly
cover all
surfaces of the
cylinder
half of the
cylinders, all
desiccant material
in the
interior,
move the
nozzle of the
spray gun
engine
shall be replaced
with new
material.
from the top
to the bottom
of the cylinder.
d.
Respray the
cylinder interiors
with corrosion
pre-
If by accident
the propeller
is
rotated fol-
ventive
mixture
every six
months and
replace
desiccant
lowing this spraying, re-spray the cylinders and protex plugs.
to
ensure
an unbroken
coverage
on all
sur-
faces.
NOTE
g.
Install spark
plugs or solid
plugs into the lower
Before spraying,
inspect the
interior of one
spark plug holes and
install dehydrator plugs in the
cylinder for corrosion
through the spark
upper spark
plug
holes. Be
sure that
dehydrator
plugs
plug
hole and
remove at
least one
rocker box
are blue
in color when
installed.
cover
and inspect
the
valve mechanism.
h. Cover
spark plug lead
terminals with
shipping
plugs (AN4060-1)
or other suitable covers.
2-16. RETURNING
AIRCRAFT TOSERVICE.
i. With
throttle in full
open position,
place a bag
After indefinite
storage,
use the following
procedure
of desiccant in the carburetor intake and seal open- to return the aircraft to service.
ing with moisture resistant
paper and tape.
a. Remove aircraft from
blocks and check tires for
j.
Place a bag of desiccant
in the exhaust tail-
correct
inflation.
pipe(s) and seal openings
with moisture resistant
b. Check battery
and install.
tape. c. Remove all materials used to seal and cover
k. Seal cold air inlet to the heater muff with mois- openings.
ture resistant tape. d. Remove warning placards posted at throttle and
1. Seal engine
breather by inserting
a protex plug
propeller.
in the breather hose and clamping in place. e. Remove and clean engine oil screen, then re-
m. Seal all other engine
openings exposed to atmos-
install and safety. On
aircraft that are equipped
phere
using suitable plugs or non-hygroscopic
tape. with an
external oil filter, install new
filter element.
f. Remove oil sump drain plug or open drain valve
NOTE
and drain sump.
Install or close drain
valve and
safety.
Service
engine
with
oil
per
Figure
2-4.
Attach a red streamer to each place plugs or
tape is installed. Either attach red streamers
2-6