Full Field Test
CAUTION:
When performing full field test on alternator, charging voltage will rise quickly. DO NOT allow voltage to rise above 18 volts, or electrical system will be damaged.
Remove protector from full field access hole located at rear of alternator end cover. See Fig 1. Insert screwdriver into hole of alternator. This will by-pass voltage regulator. Increase engine speed to 2000 RPM and monitor voltage increase.