Cessna 172R, Operating Handbook

Page: 295 / 500

CESSNA
MODEL 172R
SECTION 8
HANDLING, SERVICE
&
MAINTENANCE
When
the airplane is parked outside in cold climates and it is
necessary
to
remove
ice before flight,
care should be taken
to
protect the painted surfaces during ice removal with chemical
liquids. Isopropyl alcohol will
satisfactorily
remove
ice accumulations
without damaging the
paint. However,
keep the isopropyl alcohol
away from the windshield and cabin windows since it will attack the
plastic and may cause it
to
craze.
Preflight inspection of propeller blades for nicks, and wiping them
occasionally with an oily cloth
to
clean off grass and bug stains will
assure
long
blade
life. Small nicks on the propeller, particularly near
the
tips
and on the
leading
edges, should be dressed
out
as soon
as
possible since these nicks produce
stress
concentrations, and
if
ignored, may
result in cracks
or
failure of the propeller blade. Never
use an alkaline cleaner on the blades; remove grease
and dirt with
Stoddard solvent.
The engine may be cleaned, using a suitable
solvent, in
accordance with instructions in the airplane Maintenance Manual.
Most efficient cleaning is done using a spray
type
cleaner.
Before
spray cleaning, ensure that protection is afforded
for components
which might
be adversely
affected by
the solvent. Refer
to
the
Maintenance Manual
for
proper lubrication
of controls
and|
components
after engine cleaning. The induction air filter should be
replaced when
its condition
warrants, not to
exceed
500
hours.
PROPELLER CARE
ENGINE CARE
Revision 8
8-23