Oil System; Battery - Beechcraft C23 SUNDOWNER 180 Pilot Operating Handbook

Section VIII
BEECHCRAFT Sundowner 180
Handling, Serv
-
Maint
C23 (M-1285 and After)
OIL SYSTEM
CAUTION
During break-in
periods
on new
engines,
oil
consumption tends
to be
higher,
therefore,
maximum range
flights should be avoided and
oil level
brought to full after each flight during
this
period.
Check engine
oil quantity
before each flight. Under
nor-
mal
operating conditions, the oil should be
changed
after
each 50
hours of
engine
operation. More
frequent changes
may
be required
under
adverse operating conditions. Use
engine
oil
as
indicated in
Consumable
Materials in
this
section.
The
engine oil sump capacity'is eight
quarts.
The
normal
operating range
is
six to eight
quarts.
BATTERY
14-VOLT
SYSTEM
A 12-volt, 25 amp-hour,
lead-acid
battery, located directly
aft
of
the cabin area
may
be
reached
by
removing
the
rear
panel.
28-VOLT
SYSTEM
One 24-volt,
15.5
amp
hour, lead-acid
battery, or two 12-
volt 25
amp
hour, lead-acid
batteries connected
in
series,
are
located
directly aft of the cabin area and
may
be
reached
by removing the
rear panel.
Check the battery regularly for fluid
level
and add distilled
water as
required.
Clean, tight connections
should be
maintained at all times.
Battery
vents on Serials M-1285
thru
M-1979
except
M-1971
should be checked
peri-
odically for
obstructions
and for
proper protrusion
(3
inches
from top
of
chamfer
to
skin
line).
Serials M-1971,
M-1980
and after
have
a flush
vent
system.
8-14
Revised: April 1979