Cessna 182 1978 - Troubleshooting - Vacuum System

MODEL
182
& T182
SERIES
SERVICE
MANUAL
15-25.
TROUBLE
SHOOTING
--
VACUUM
SYSTEM.
TROUBLE
PROBABLE
CAUSE
REMEDY
HIGH
SUCTION
GAGE
READINGS.
Relief
valve
filter
clogged,
Replace
filter,
reset valve.
(Gyros
function
normally.
)
relief
valve
malfunction.
Replace
Gage.
LOW
SUCTION
GAGE
READINGS.
Leaks
or restriction
between
Repair
or
replace
lines,
adjust
or
instruments
and
relief
valve,
replace
relief
valve,
repair
or re-
relief
valve
out of
adjustment,
place pump.
defective
pump.
Central
air
filter
dirty.
Replace
filter.
SUCTION
GAGE
FLUCTUATES.
Defective
gage
or sticking
Replace
gage.
Clean
sticking
valve
relief
valve.
with
Stoddard
solvent.
Blow dry
and test.
If
valve
sticks
after
cleaning,
replace
it.
15-26.
TROUBLE
SHOOTING
-- GYROS.
TROUBLE
PROBABLE
CAUSE
REMEDY
HORIZON BAR FAILS TO RE- Central air filter dirty. Replace filter.
SPOND.
Suction relief valve im- Adjust or replace relief valve.
properly adjusted.
Faulty
suction
gage.
Replace
suction
gage.
Vacuum pump
failure.
Replace
pump.
Vacuum
line
kinked or
Repair
or replace
damaged
lines,
leaking.
tighten
connections.
HORIZON BAR
DOES NOT Defective mechanism.
Replace instrument.
SETTLE.
Insufficient vacuum.
Adjust or
replace relief valve.
Excessive
vibration.
Replace defective
shock panel
mounts.
HORIZON BAR OSCILLATES OR Central air filter dirty. Replace filter.
VIBRATES EXCESSIVELY.
Suction relief valve im- Adjust or replace relief valve.
properly adjusted.
Faulty suction
gage.
Replace
suction gage.
Defective
mechanism.
Replace instrument.
Excessive vibration.
Replace
defective shock panel
mounts.
15-15