Piper SARATOGA PA-32-301 Maintenance Manual page 363

PIPER AIRCRAFT
PA-32-301/301T
MAINTENANCE MANUAL
CHART 3401. TROUBLESHOOTING (RATE OF CLIMB INDICATOR) (cont)
Trouble
Cause
Remedy
Pointer oscillates.
Leaks in static lines.
Disconnect all instruments
connected to the static line.
Check individual instru-
ments for leaks. Reconnect
instruments to static line
and test installation for
leaks.
Defective mechanism.
Replace instrument.
Rate of climb indicates
when aircraft is banked.
Pointer has to be set
before every flight.
Pointer cannot be reset to
zero.
Instrument reads very low
during climb or descent.
Water in static line.
Temperature compensator
inoperative.
Diaphragm distorted.
Case of instrument broken
or leaking.
Disconnect static lines and
blow out lines from cockpit
out to pitot head.
Replace instrument.
Replace instrument.
Replace instrument.
- NOTE -
When any connections in the static system are openedfor checking,
system must be rechecked per F.A.R. 23.1325.
SENSITIVE ALTIMETER.
The altimeter indicates pressure altitude in feet above sea level. The indicator has three pointers and a dial
scale: the longer pointer is read in hundreds of feet, the middle pointer in thousandths of feet and the short
pointer in ten thousandths of feet. A barometric pressure window indicating inches of mercury is located on
the right side of the indicator dial and is set by the knob located on the lower left corner of the instrument. On
the left side of the indicator is a window which indicates barometric pressure in millibars. The altimeter
consists of a sealed diaphragm that is connected to the pointers through a mechanical linkage. The instrument
case is vented to the static air system and as static air pressure decreases, the diaphragm expands. causing the
pointers to move through the mechanical linkage.
34-10-02
Page 34-04
2D22
Revised:
May 21,
1980
2D22