Cessna 182 1978 - Page 428

MODEL
182
&
T182
SERIES
SERVICE
MANUAL
16-39.
TROUBLE
SHOOTING
THE
ALTERNATOR
SYSTEM
(Cont.)
(THRU
1977
MODELS).
TROUBLE
PROBABLE
CAUSE
REMEDY
ALTERNATOR
SYSTEM
Faulty wiring
between
alter-
5.
Check resistance
from
"F"
WILL
NOT
KEEP BAT-
nator
and regulator,
or
terminal
of
regulator
to "F"
ter-
TERY CHARGED (Cont).
faulty alternator.
minal of alternator. Normal
indication
is a
very low
resis-
tance.
If reading
indicates
no.
or poor
continuity,
repair
or
replace
wiring
from
regulator
to alternator.
6.
Check
resistance
from
"F"
terminal
of
alternator
to
alter-
nator
case.
Normal
indication
is 6-7
ohms.
If
resistance
is
high
or low,
repair
or
replace
alternator.
7.
Check
resistance
from
case
of
alternator
to airframe
ground.
Normal
indication
is
very
low
resistance.
If
reading
indicates
no,
or poor
continuity,
repair
or
replace
alternator
ground
wiring.
ALTERNATOR
OVERCHARGES
Regulator
faulty
or
improperly
Check
bus voltage
with
engine
BATTERY
- BATTERY
USES
adjusted.
running.
Normal
indication
EXCESSIVE
WATER.
agrees
with
voltage
vs
temper-
ature
chart
on
page
16-13.
Ob-
serve
ship's
ammeter,
ammeter
should
indicate
near
zero
after a
few
minutes
of
engine
operation.
Replace
regulator.
OVER-VOLTAGE
WARNING
Regulator
faulty
or
improperly
1. With
engine
running
turn off
LIGHT
ON.
adjusted.
Faulty
sensor
switch.
and on
battery
portion
of the
master
switch.
If
the light
stays
on
shut
down
engine
then
turn
on
the
"BAT and
"ALT"
portions
of
the master
switch.
Check
for
voltage
at the
"S"
terminal
of
the
voltage
regulator.
If
voltage
is
present
adjust
or
replace
regula-
tor.
If
voltage
is not
present
check
master
switch
and
wiring
for short
or
open condition.
If
wiring
and switch
are
normal
replace
sensor.
16-22