SECTION 8
HANDLING, SERVICE
& MAINTENANCE
Fuel
Contamination
MODEL·402C
Fuel
contamination
is
usually the result of foreign material present
in
the fuel system,
and
may
consist of water,
rust,
sand,
dirt, microbes or bacterial growth.
Before the first flight of the day
and
after each refueling,
use
the fuel sampler
and
drain fuel
from
the
fuel
tank
sump
drains,
the
fuel
strainer
drains
and
the
crossfeed
line
drains
to
determine
if
contaminants
are
present,
and
that
the
airplane
has
been
fueled
with
the
proper
grade
and
type
of
fuel.
If contamination
is
detected, continue draining
from
all
fuel drain points until
all
contamination
has
been
removed.
If
the
airplane
has
been
serviced
with
the
improper
fuel,
defuel
completely
and
refuel
with
the
correct
grade
and
type.
Do
not fly
the
airplane with
contaminated or unapproved fuel.
In addition, Owners/Operators who are not acquainted
with
a particular fixed
base
operator
should
be
assured that the fuel supply has been checked for contamination and
is
properly
fittered before allowing the airplane to be serviced. Also. fuel tanks should
be
kept full
between flights, provided weight and balance considerations
will
permit, to reduce the
possibility of water condensing
on
the walls of partially filled tanks.
To further reduce the possibility of contaminated fuel, routine maintenance
of the fuel system
should
be
performed
in
accordance with the airplane Maintenance Manual. Only the proper
fuel, as defined
in
Section 2 of this handbook, should
be
used,
and
fuel additives should not
be used unless approved
by
Cessna and the Federal Aviation Administration.
OIL (Aviation Grade Engine
011;
SAE
50
Above
4.4'C
(40'F),
and SAE
30
Below
4.4'C
(40'F)
or
Multiviscosity
Unrestricted Temperature
Range'
Filter Element 643226
or
643227)
Multiviscosity oil
is
recommended for use after the first
25
hours of engine operation for
improved starting
and
turbocharger controller operation
in
temperatures below
4.4°C
(400F).
/o-~
When operating temperatures overlap indicated ranges. use the lighter grade of
oil.
Ashless
dispersant oil,· conforming
to the latest issue of Continental Motors Specification MHS-24,
must be used. No oil additives are approved for use. Airplanes equipped with short fitters
(4.80 inches) should change the oil and filter every 50 hours or 6 months. whichever occurs
first. Airplanes equipped with the long filters (5.80 inches), may extend the recommended oil
and filter change interval
to every 100 hours or 6 months, whichever occurs first Reduce oil
and filter change intervals for prolonged operation
in
dusty areas, cold climates or when short
flights and long idle periods result in sludging conditions.
....
--------NOTE--------"""I
For faster ring seating and improved oil control, your Cessna was
delivered from the factory with corrosion preventive oil conforming
to
the
latest issue of MIL-C-6529, Type
II.
This break-in oil must
be
used only
for the first
25
hours of operation; at that time it must be replaced with
ashless dispersant oil. If oil must
be
added during this first 25 hours of
operation, use straight mineral oil conforming to MIL-L-6082.
8-12
1 November 1979
Revision
4 - 1
December
1983
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