Section
VIII
Handling,
Serv
and
Maint
BEECHCRAFT
Duchess
76
The fuel selector valve drains are actuated
by
a manual
"up"
movement
of
.1
to .25 inch. All
other
fuel drains are flush
valves and are opened by using the combination fuel drain/
landing
gear
emergency extension tool.
Open each
of
the eight fuel drains
daily
to allow condensed
moisture to drain from the system.
FUEL STRAINERS
To preclude the possibility
of
contaminated fuel, always cap
any disconnected fuel lines
or
fittings.
Most
fuel system mal-
functions can be attributed to contaminated fuel. Inspecting
and cleaning the fuel strainers should be considered to be of
. the utmost importance as a regUlar
part
of
preventive main-
tenace.
Normally, the fuel selector valve
strainer
should
be
cleaned
and inspected every 100 hours
of
operation. However, the
strainer should
be
inspected and
cleaned
at more frequent
intervals depending on service
conditions,
fuel
handling
equipment, and when operating in localities where there is an
excessive amount
of
sand
or
dust.
Ordinarily, the fuel strainers in the fuel tank outlets should not
require cleaning unless there is a definite indication of solid
foreign material
in
the tanks, or
the
airplane has been stored
for an extended period.
OIL
SYSTEM
The engines are equipped with a
wet
sump, pressure-type oil
system. Each engine sump has a
capacity
ot8
quarts. Ser-
8-14
January
1978
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