Magnetic Compass Troubleshooting - Piper PA-24 Comanche Service Manual

PIPER COMANCHE SERVICE MANUAL
1143. Gennal. The mqnetic compass installed in the Comanche
i~
a self-contained instrUment and is
mounted above the Instrument
~.nel
on the windshield cmterstrip. This insrnammt hu an individual light
whiCh is connected to the instrUment lith tin, circuit. The comp. . cometion card is located in the card
holder mounted on the instrumenr panel.
1144. Troublellhooanl.
TABLE XI-VII. MAGNETIC COMPASS
Trouble
YUle Remccty
Excessive card error.
Compus not properly
Compensate inSU\lment.
eompcnstated.
External m.,netic inter- Locatt mqnetie inter-
frrmee.
ferenee and eliminate
if
possible.
I
Excessive card
I
Improper mounting on in-
Aliln instrument.
oscillarion. strumenr panel.
Insufficient liquid.
Replaee instrUment.
!
Card slugglsn. Weak card magnc:r. Replace inserumenr.
I
Excessive pivot friction Replace inserument, I
I
or broken jeweL
I
I
Instrument tOO havily Remove excess com pen-
I
eompensatcd.
sanon,
!
I
Liquid ieaKlie. Loose bezel screws. Replace InstrUment.
Broken cover gJass. Replace instt\lmenr.
I
I
Defeetive scaling gaskets. Replace instrument.
i
Replace instt\lment.
: Discolored luminous Age.
;
:'T'larkin~s.
,
I
Dereenve light.
Burned our lamp or broken
Cheek lamp or connnuiev
;
circuit.
ofwinng.
INSTRUMENTS
ISSUED: B/18n2
3
811
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