Cessna T188C - Removal and Installation

MODEL
188
& T188
SERIES
SERVICE
MANUAL
of the cockpit.
The
air guides
may be rotated
to
14-19.
TROUBLE
SHOOTING.
Most of the
opera-
direct
the air, as
desired, in the cockpit.
tional troubles
in the heating
and ventilating
systems
are
caused by sticking
or binding
of the shut-off
14-15D. REMOVAL, INSTALLATION AND REPAIR. valve, air scoop door controls, damaged air ducting,
If adjustments or replacement of broken parts is or defects in the exhaust muffler. In most cases,
required, the cabin top must be removed from the the shut-off valve, air scoop door or their controls
canopy before the fresh air unit can be disassembled. can be freed by proper lubrication. Damaged or
See figure 14-8 for detail parts. The magnetic com- broken parts will be repaired or replaced. When
pass and wire cutter
(if installed) must be removed
checking rigging of
controls, ensure valves respond
during removal
of the cabin top. Remove
all bolts freely to control
movement, move in the correct
di-
and
rivets attaching the cabin top to
the canopy, take rection,
and move through their full
range of travel
care when removing
the windshield
attaching bolts
to and
seal properly.
Check that heater
hose are prop-
prevent
cracking
the windshield.
Before replacing
erly
secured and replace
hose that are
burned, fray-
the cabin top, remove the existing seal strip and old ed, or crushed. If fumes are detected in the cabin,
sealant from mating surfaces. Install new seal strip a thorough inspection of the exhaust muffler should
and apply new sealant to clean
dry surfaces. be
accomplished. Refer to Section
11 for the exhaust
system
inspection.
Since any
holes or cracks
may
14-16. AUXILIARY CABIN AIR INSTALLATION. permit exhaust fumes to enter the cabin, replacement
(Beginning with 1881825.) (See figure 14-7.) of defective parts is imperative because fumes con-
stitute
an extreme danger.
Seal any
gaps in shut-off
14-17. DESCRIPTION.
The auxiliary cabin air
in- valve at the firewall
with Pro-Seal #700 (Coast Pro-
stallation is comprised of an air inlet scoop, ducting, Seal Co., Los Angeles, California) compound, or
a louvered circular air outlet and a push-pull type equivalent compound.
control.
14-20. REMOVAL,
INSTALLATION
AND
REPAIR.
14-18. OPERATION. Outside
air is taken in through Figures
14-1 through 14-7 may
be used as guides for
the air inlet scoop
mounted in the right hand
fuselage removal, installation
and repair of components.
forward of
the cockpit. The fresh air is
ducted to the Burned, frayed
or crushed hose should be
replaced
circular air outlet
located in the auxiliary control
with new hose. Cut
hose to length and install in
the
panel below
the right hand
side of the main
control
original routing.
Trim the
hose winding shorter
than
panel. The
air inlet scoop
is opened or closed
by op-
the hose to allow
hose clamps
to be fitted. A
defec-
eration
of the push-pull
type
auxiliary
air control
in-
tive shut-off
valve
or air scoop
door will
be repaired
stalled between the main and auxiliary control panels or replaced. Check for proper operation and correct
on the right hand side of the cockpit. rigging of the shut-off valve and air scoop door after
repair or installation.
SHOP NOTES:
14-12 Revision 1