Generator Output Test
CAUTION:
Carbon pile testing is part of this procedure. To avoid battery explosion, turn carbon pile OFF before connecting to or disconnecting from test stand battery.
- Mount generator on test stand. Set test stand controls to turn generator clockwise. Ensure ground polarity of generator and battery are the same. Ensure battery is fully charged. Connect voltmeter, ammeter and carbon pile (in the OFF position). Connect a 30-500 ohm resistor between battery and terminal "L" of generator. See Fig 1.
- Slowly increase generator speed while observing voltmeter. If output is uncontrolled and increases to greater than 16 volts, rotor field coil is shorted and/or regulator is defective. A shorted rotor field coil can cause regulator failure. Replace or repair generator.
- If voltage is less than 16 volts, increase speed and adjust carbon pile to obtain maximum generator output. Maintain voltage greater than 13 volts. If amp output is within 15 amps of rated output, generator is okay. If amp output is not within 15 amps of rated output, replace or repair generator. See GENERATOR USAGE/AMP OUTPUT RATING table.