Piper SARATOGA PA-32-301 Maintenance Manual page 201

I
PIPER AIRCRAFT
PA-32-301/301T
MAINTENANCE MANUAL
ROTOR GROUND TEST.
1. Set the ohmmeter selector switch on 1000 scale and zero the meter.
2. Touch one lead to the rotor shaft and the other lead to first slip ring then to the other. The ohmmeter
should read infinity (no needle movement) in both checks.
3. If the meter shows a reading (needle moves) a short to ground exists. Check the soldered connections
at the slip rings to make sure they are secure and grounding against the rotor shaft, or that excess solder is not
grounding the rotor coil.
4. Replace the rotor if repairs cannot be made.
-NOTE-
If both the "Rotor Continuity Test" and the "Rotor Ground Test"
prove satisfactory, and the "Field Circuit Open or Ground Test"
showed trouble, the brushes are the cause.
C206
OHMMETER
ROTOR
Figure 24-29. Rotor Ground Test
EFFECTIVITY: FORD
24-32-17
Page 24-36
Added: August 23, 1982
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