Additional Field Circuit Test
- Turn ignition switch "ON", and run engine faster than idle speed. If incorrect readings were experienced in previous test, retest field circuit by disconnecting regulator from field terminal (EX).
- Connect an ammeter between field (EX) terminal and output terminal (B+). Use a field rheostat in series with ammeter. This will prevent damage to ammeter from excessive current flow if field is shorted. See Fig 1.
Use field rheostat in series with ammeter .
- Ammeter should read 1-1.5 amps. If ammeter registers less than 1 amp, recheck brushes, leads and slip rings.