Piper SARATOGA PA-32-301 Maintenance Manual page 369

PIPER AIRCRAFT
PA-32-301/301T
MAINTENANCE MANUAL
3. Head aircraft on a magnetic East heading and do the same as Step 2. adjusting E-W adjusting screw.
4. Head aircraft on a magnetic South heading and note resulting South error. Adjust N-S adjusting
screw until one-half of this error has been removed.
5. Head aircraft on magnetic West and do same as Step 4, adjusting E-W adjustment screw.
6. Head aircraft in successive magnetic 30
°
headings and record compass readings on appropriate
deviation card. Deviations must not exceed + 10
°
on any heading.
CHART 3406. TROUBLESHOOTING (MAGNETIC COMPASS)
Trouble
Cause Remedy
Excessive card error. Compass not properly
compensated.
Compensate instrument.
External magnetic inter-
ference.
Locate magnetic inter-
ference and eliminate if
possible.
Excessive card oscillation.
Card sluggish.
Insufficient liquid.
Weak card magnet.
Replace instrument.
Replace instrument.
Excessive pivot friction or
broken jewel.
Replace instrument.
Liquid leakage. Loose bezel screws.
Replace instrument.
Broken cover glass.
Defective sealing gaskets.
Replace instrument.
Replace instrument.
Replace instrument.
Discolored markings.
Age
Defective light.
Burned out lamp or broken
circuit.
Check lamp or continuity of
wiring.
Card sticks. Altitude compensating
diaphragm collapsed.
Replace instrument.
Card does not move when
compensating screws are
turned.
The gears that turn compen-
sating magnets are
stripped.
Replace instrument.
Compass swings erratically
when radio transmitter is
keyed.
Normal
34-10-07
Page 34-10
Issued: January 2, 1980
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