2G2
TABLE X-V. ALTIMETER (cont)
Altimeter sticks at Water or restriction Remove static lines
altitude or does not in static line. from all instruments,
change with change of blow line clear from
altitude. cockpit to pitot head.
Altimeter changes Water in static line. Remove static lines
reading as aircraft from all instruments,
is banked. and blow line clear from
cockpit to pitot head.
Altimeter requires Temperature compensator Change instrument.
resetting frequently. inoperative.
High or low reading. Improper venting. Eliminate leak in static
pressure system and check
alignment of airspeed tube.
Setting knob is hard Wrong lubrication or Replace instrument.
to turn. lack of lubrication.
Inner reference marker Out of engagement. Replace instrument.
fails to move when
setting knob is rotated.
Setting knob set screw Not tight when altimeter Tighten instrument
loose or missing. when reset. screw, if loose.
Replace instrument,
if screw is missing.
Cracked or loose Case gasket hardened. Replace instrument.
cover glass.
Dull or discolored Age.
markings.
Trouble Cause Remedy
Revised: 2/13/89
CHEROKEE ARROW III SERVICE MANUAL
INSTRUMENTS
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