Cessna 182 1978 - Page 253

MODEL
182
&
T182
SERIES
SERVICE
MANUAL
11-39.
TROUBLE
SHOOTING
(Cont).
TROUBLE
PROBABLE
CAUSE
REMEDY
HIGH
OIL PRESSURE.
High
viscosity
oil.
Drain sump
and refill
with proper
grade
and quantity
of oil.
Relief
valve
defective.
Remove
and check
for
dirty
or
de-
fective
parts.
Clean
and
install;
replace
valve
if defective.
Defective
oil
pressure
gage.
Check
with
a known
good
gage.
If
second
reading
is
normal,
replace
gage.
LOW
OIL
TEMPERATURE.
Defective
oil
temperature
gage
Check with
a known
good gage.
If
or
temperature
bulb.
second
reading
is
normal,
replace
gage.
If reading
is similar,
the
temperature
bulb
is defective.
Replace
bulb.
Oil cooler
thermostatic
Remove
valve
and
check
for
proper
bypass
valve
defective
or
operation.
Replace
valve
if defec-
stuck.
tive.
HIGH
OIL TEMPERATURE.
Oil cooler
air
passages
clogged.
Inspect
cooler
core.
Clean
air
passages.
Oil cooler
oil
passages
clogged.
Drain
oil
cooler
and inspect
for
sediment.
Remove
cooler
and
flush
thoroughly.
Thermostatic
bypass
valve
Feel
front
of cooler
core
with
hand.
damaged
or held
open
by
If core
is cold,
oil
is bypassing
solid
matter.
cooler.
Remove
and
clean
valve
and seat.
If still
inoperative,
re-
place.
Low
oil supply.
Check
with
dipstick.
Fill
sump
with
proper
grade
and
quantity
of
oil.
Refer
to Section
2.
Oil
viscosity
too
high.
Drain
sump
and
refill
with
proper
grade
and
quantity
of
oil.
Prolonged
high
speed
operation
Hold
ground
running
above
1500
on the
ground.
rpm
to a
minimum.
Defective
oil
temperature
gage.
Check
with
a known
good
gage.
If
second
reading
is
normal.
Replace
gage.
Defective
oil
temperature
bulb.
Check
for
correct
oil
pressure,
oil
level
and
cylinder
head
tempera-
ture.
If they
are correct,
check
oil
temperature
gage
for being
de-
fective;
if similar
reading
is ob-
served,
bulb
is
defective.
Re-
place
bulb.
11-16