GENERAL
DESCRIPTION AND OPERATION
The D-2031, D-3031 and D-3000 magnetos feature two electrically independent ignition circuits in one
housing. This magneto uses an impulse coupling to provide reliable ignition to engine cranking speed. A single
cam operates the main breakers for both magneto circuits. At low engine cranking speeds the impulse coupling
automatically retards the magneto until the engine is also at its retard firing position. The spring action of the
impulse coupling is then released to spin the rotating magnet and produce the spark required to fire the engine.
After the engine starts, the impulse coupling flyweights do not engage due to centrifugal action. The coupling
then acts as a straight drive and the magneto fires at the normal firing position of the engine.
TROUBLESHOOTING
The following chart lists some of the common troubles which may be encountered, their probable causes
and suggested remedies.
74 - 00 - 00
Page - 74-01
Reissued: August 1, 1986
2I21
PIPER AIRCRAFT
PA-28-236
MAINTENANCE MANUAL
To Next Page
Loading...
