Cessna T188C - Page 158

MODEL
188 &
T188 SERIES
SERVICE MANUAL
Removal
and Installation . . . 1119/11-25
EXTREME WEATHER
MAINTENANCE . 1121/11-27
Primary Maintenance
..
. .1119/11-25
Cold Weather
..........
1121/11-27
EXHAUST SYSTEM
.....
. 1119/11-25
Seacoast and
Humid Areas
. . . .1122/11-28
Description
...........
1119/11-25
Dusty Areas
.......
1122/11-28
Removal
and Installation
.....
1119/11-25
Ground
Service Receptacle
....
1122/11-28
Inspection
............
.
1119/11-25
11-1. ENGINE COWLING.
may be used for repair if
repair parts are formed to
fit contour of cowling. Small cracks may be stop-
11-2. DESCRIPTION.
The engine cowling is divided
drilled and small dents straightened
if they are rein-
into two major
removable sections. These sections
forced on the inner
surface with a doubler of
the
are fastened together and to the fuselage with quick- same material as the cowling skin. Damaged rein-
release fasteners, allowing
the removal of either sec-
forcement angles should be
replaced with new parts. -
tion individually. At the lower aft side of the lower Due to their small size, new reinforcement angles
cowling section, a removable
plate provides access
are easier to install than
to repair the damaged part.
to
the throttle
and
mixture
control
linkages
and
to the
induction air components. The upper cowling section 11-6. ENGINE.
has two
access doors,
one at the upper
front provides
access to the oil filler neck and one at the left aft side 11-7. DESCRIPTION. The carburetor equipped
provides access to the oil dipstick. engine is an air-cooled, horizontally-opposed,
direct-drive,
six-cylinder
Continental
0-470 series
11-3.
REMOVAL AND INSTALLATION.
engine.
The cylinders, numbered from
rear to front,
a. Unfasten the
quick-release
fasteners along
aft end
are staggered
to permit a separate
throw on
the
and
sides to remove upper cowling
section. crankshaft
for each connecting rod.
The right rear
b. Remove plate at aft end
of lower cowling section
cylinder is number 1 and cylinders
on the right side
and disconnect air intake boot at airbox. are identified by odd numbers 1, 3 and 5. The left
c. Disconnect landing
light wires at quick-disconnects
rear cylinder is number
2 and the cylinders on the
(beginning with aircraft serial
18800833). left
side are identified as 2, 4 and
6. For repair and
d. Unfasten the quick-release
fasteners along aft end
overhaul of the engine,
accessories and propeller,
and carefully remove lower cowling section. refer to the applicable publication issued by the manu-
e. Reverse
the preceding
steps
for
reinstallation.
facturer
of these
items.
These publications
are
avail-
Ensure
the vertical baffle
seals are
folded forward
able
from the Cessna
Supply
Division.
and
the side baffle
seals are
folded upward.
11-7A. TIME BETWEEN OVERHAUL (TBO). Tele-
11-4.
CLEANING
AND INSPECTION.
Wipe the
inner dyne
Continental Motors
recommends
engine overhaul
surfaces of the cowling segments
with a clean cloth at
1200 hours operating time for
the 0-470 series en-
saturated
with cleaning
solvent
(Stoddard or equiv-
gines
employed in
spraying or dusting
operations.
alent). If
the inside
surface of
the cowling
is coated
Refer
to Continental
Aircraft
Engine
Service
Bulletin
heavily
with oil or dirt,
allow solvent to
soak until
M81-22, and
to any superseding
bulletins,
revisions
foreign material can be
removed. Wash painted
or supplements thereto, for
further recommendations.
surfaces of the cowling with
a solution of mild soap At
the time of overhaul, engine
accessories should be
and water and rinse thoroughly. After washing, a overhauled. Refer to Section 13 for propeller and
coat of wax may be applied to the painted surfaces to governor overhaul periods.
prolong
paint life.
After cleaning,
inspect cowling
for dents, cracks, loose rivets and spot welds. Re- 11-7B. OVERSPEED LIMITATIONS. The engine
pair all defects to prevent spread of damage. must not be operated above specified maximum con-
tinuous RPM.
However, should
inadvertent
over-
11-5. REPAIR. If cowling skins are extensively speed occur, refer to Continental Aircraft Engine
damaged, new complete sections of the cowling Service Bulletin M75-16, and to any superseding
should be installed. Standard insert-type patches bulletins, revisions or supplements thereto, for
further recommendations.
SHOP NOTES:
11-2 Revision 1