Cessna 182 1978 - Troubleshooting - Altimeter

MODEL
182 &
T182
SERIES
SERVICE
MANUAL
15-19.
TROUBLE
SHOOTING.
NOTE
Refer to paragraph
15-15 before blowing
out pitot or
static lines.
TROUBLE
PROBABLE
CAUSE
REMEDY
HAND
FAILS
TO RESPOND.
Pitot pressure
connection
Repair
or replace
damaged
line,
not properly
connected
to pres-
tighten connections.
sure line
from pitot
tube.
Pitot
or static
lines clogged.
Blow out
lines.
INCORRECT
INDICATION
OR
Leak
in pitot or
static lines.
Repair
or replace
damaged
HAND
OSCILLATES.
lines,
tighten connections.
Defective
mechanism.
Replace
instrument.
Leaking
diaphragm.
Replace
instrument.
Alternate
static source
valve
Close for
normal
operation.
open.
HAND
VIBRATES.
Excessive
vibration
caused
by
Tighten
mounting
screws.
loose mounting
screws.
Excessive
tubing
vibration.
Tighten
clamps
and
connections,
replace
tubing with flexible
hose.
15-20. TROUBLE
SHOOTING
-- ALTIMETER.
NOTE
Refer
to paragraph
15-15 before
blowing
out pitot
or
static
lines.
TROUBLE
PROBABLE
CAUSE
REMEDY
INSTRUMENT
FAILS
TO
Static line
plugged.
Blow out
lines.
OPERATE.
Defective
mechanism.
Replace
instrument.
INCORRECT
INDICATION.
Hands
not carefully
set.
Reset hands
with
knob.
Leaking
diaphragm.
Replace
instrument.
Pointers
out
of calibration.
Replace
instrument.
HAND
OSCILLATES.
Static pressure
irregular.
Blow
out lines,
tighten connections.
Leak
in airspeed
or
vertical
Blow
out
lines,
tighten
connections.
speed
indicator
installations.
15-11