Cessna 182 1978 - Description; Heating System; Operation; Removal. Installation and Repair

MODEL
182 & T182 SERIES
SERVICE MANUAL
14-1.
UTILITY
SYSTEMS.
muffler.
In most
cases, valves
or
controls
can be
freed by proper
lubrication. Damaged
or broken
14-2.
HEATING
SYSTEM.
(See figure
14-1.)
parts
must be
repaired or
replaced.
When checking
controls, ensure valves respond freely to control
14-3.
DESCRIPTION. The heating
system is com-
movement. that they
move in the correct
direction.
prised of the
heat exchange section
of the exhaust
that they move through
their full range of travel
and
muffler,
a shut-off valve, mounted
on the right for-
seal properly. Check
that hose are properly
secured
ward side
of the firewall,
a push-pull
control
on the
and replace
hose that
are burned,
frayed or
crush-
instrument panel, outlets
and flexible ducting con- ed. If fumes
are detected in the cabin, a thorough
necting the
system,
inspection of
the exhaust system
should be
accom-
plished.
Refer to applicable
paragraph in Section
11
14-4.
OPERATION.
Ram
air
is ducted
through
for this
inspection.
Since
any holes
or
cracks
may
engine baffle inlets and heat exchange section of the permit exhaust umes to enter thecabin, replacement
exhaust muffler, to the shut-off valve at the firewall. of defective parts is imperative because fumes consti-
The heated air flows from
the shut-off valve into a tute an extreme
danger. Seal any gaps in heater
ducts across the firewall with Pro-Seal =700 (Coast
duct across the aft side of the firewall, where it is
Pro-Seal
Co., Los
Angeles.
California)
compound
distributed
into the cabin. The shut-off valve,
oper- or equivalent compound.
ated by a push-pull control labeled "CABIN HEAT.
located on the instrument panel, regulates the vol- 14-6. REMOVAL, INSTALLATION AND REPAIR.
ume of heated air entering the system. Pulling the Figure 14-1 may be used as a guide during removal,
control full out supplies maximum flow and pushing installation and repair of heating system components.
control in gradually decreases flow, shutting off flow Burned, frayed or crushed hose must be replaced
completely when the control
is pushed full in. with new hose,
cut to length and installed in the orig-
inal routing. Trim hose winding shorter than the
14-5. TROUBLE SHOOTING. Most
of the operation- hose to allow clamps
to be fitted. Defective air
al troubles in the heating and defrosting systems
are valves must be repaired or
replaced. Check for
caused
by sticking or binding valves and their con-
proper operation of valves and their
controls after
trols, damaged
air ducting or
defects in the exhaust
repair
or replacement.
14-2