Cessna T188C - Page 81

MODEL 188 & T188 SERIES SERVICE MANUAL
4-21. DESCRIPTION.
The aircraft may
be equipped 4-24.
TAILCONE.
with two extruded rubber abrasion boots, one on the
leading edge of each
horizontal stabilizer. These
4-25. DESCRIPTION.
The tailcone is of semimono-
boots are installed to
protect the stabilizer leading
coque-type construction,
consisting of skin riveted
edge from damage
caused by rocks thrown back
by to bulkheads, stringers,
and longerons. Four attach
the propeller.
points, one on
the forward end of each longeron,
are
provided to bolt the tailcone to the welded tubular
4-22. REMOVAL. The abrasion
boots can be re-
structure. Attach points are provided
at the aft end
moved by loosening
one end
of the boot and
pulling
of the tailcone
to support the
horizontal stabilizer,
it off the
stabilizer
with an even
pressure.
Excess
vertical
fin, and
dorsal.
adhesive or rubber can be removed with Methyl-
Ethyl-Ketone.
4-26.
REMOVAL.
a. Remove side panels from tubular structure and
4-23. INSTALLATION. Install abrasion boots as tailcone.
outlined in the following
procedures.
b. Remove access door
from forward bulkhead of
a. Trim boots to desired length. tailcone.
b. Mask off boot area on leading edge of stabilizer c. Remove upper engine cowling.
with 1-inch masking tape, allowing 1/4-inch margin. d. Disconnect elevator and rudder control cables
c.
Clean metal surfaces
of stabilizer, where
boot at turnbuckles.
is to be installed with Methyl-Ethyl-Ketone.
e. Disconnect elevator trim
tab control cables in-
d. Clean inside of abrasion boot with Methyl-Ethyl- side tailcone and pull forward through forward bulk-
Ketone and a Scotch
brite pad to ensure
complete re-
head.
moval
of paraffin/talc. Then a normal
wipedown with f. Disconnect
radio antenna lead from
antenna and
MEK on a cloth will leave surface
suitable for bonding
remove clamps attaching lead
to bulkheads, if in-
to
the aluminum.
stalled.
g. Disconnect flashing beacon and tail light wires
NOTE
at quick-disconnects
forward
of front bulkhead, if
installed.
Boots may be applied
over epoxy primer, but
h. Disconnect static line
at tee in tailcone and re-
if the surface has
been painted, the paint
move from
forward bulkhead.
shall be removed from the bond area. This i. Disconnect deflector cable from canopy.
shall be done by wiping the surfaces with a j. If optional quick-loader system is installed,
clean, lint-free rag, soaked with solvent, disconnect main tube at aft end.
and then wiping the surfaces
dry, before
k. Drill out rivets attaching
aft section of canopy
the solvent has time to evaporate, with a to tailcone.
clean, dry lint-free rag. 1. Remove four bolts attaching tubular brace from
canopy to tailcone.
e. Stir cement (EC-1300 Minnesota
Mining and
m. Jack aircraft in accordance
with procedures out-
Manufacturing Co.) thoroughly. lined in Section 2.
f. Apply one even brush coat to the metal and the
inner
surface of the boot. Allow
cement to air-dry
CAUTION
for
a minimum
of 30 minutes,
and then apply
a
second coat
to each surface.
Allow at least
30 min- Support
front
end of aircraft
with hoist
hooked
utes (preferably one-hour) for
drying.
into engine lifting eye. Loss
of tailcone weight
g. After the
cement has thoroughly
dried, reacti-
will allow nose to drop.
vate the surface
of the cement
on the stabilizer
and
boot, using a clean, line-free cloth, heavily moisten- n. Drill out rivets attaching lower skin to tailcone
ed with
Toluol. Avoid excess
rubbing which would
forward bulkhead.
remove the cement from the surfaces. o. On serials prior to 188-0048, remove four bolts
h. Position boot against leading edge, exercising attaching tailcone to tubular structure. Tailcone may
care not to trap air between boot and stabilizer. have to be held or supported while bolts are removed.
Beginning with serial 188-0048, remove four cotter
NOTE pins and castle nuts from attaching studs. If shims
are used,
be sure
to identify according
to location.
Should boot be attached "off-course", pull it p. Remove tailcone by pulling aft and down. When
up immediately
with a quick motion, and
removing tailcone,
be sure quick-loader tube,
anten-
reposition properly. na wire, and cables properly clear aircraft structure.
q. Place tailcone on padded supports.
i. Press or roll entire surface of boot to assure
positive contact between the two surfaces.
j. Apply
a coat of GACO
N700A sealer,
or equiva-
lent. conforming
to MIL-C-21067,
along
the trailing
edges of the boots
to the surface
of the skin
to form a
neat, straight fillet.
k. Remove masking tape and clean stabilizer of
excess material.
1. Mask to the edge of boot for painting stabilizer.
4-9