Forum Discussion
MEXICOWANDERER
Aug 02, 2016Explorer
Fair price
BEFORE you bolt the reg on, do this...
Slip the brushes into their holes. Boiing they're sticking up via their spring
With your meter set to TWO HUNDRED OHMS (or nearest setting)
With one test lead push the brush most rear down firmly with the lead probe.
With the OTHER test lead touch the tip to anyplace on the alternator's case
The meter reading should remain blinking "1", open circuit infinite resistance.
The meter dial should be well demarcated. 200 ohms, not 2,000, 20,000, or 2M
For curiosity probe the front rush. You WILL get a reading there of anywhere from 3.0 ohms to god knows how high (due to carbon smearing on the brass slip ring. But the rear brush has to be grounded or both test leads have to be used on both brushes. One lead on each brush.
Those rotor windings have been famous for grounding shorts.
BEFORE you bolt the reg on, do this...
Slip the brushes into their holes. Boiing they're sticking up via their spring
With your meter set to TWO HUNDRED OHMS (or nearest setting)
With one test lead push the brush most rear down firmly with the lead probe.
With the OTHER test lead touch the tip to anyplace on the alternator's case
The meter reading should remain blinking "1", open circuit infinite resistance.
The meter dial should be well demarcated. 200 ohms, not 2,000, 20,000, or 2M
For curiosity probe the front rush. You WILL get a reading there of anywhere from 3.0 ohms to god knows how high (due to carbon smearing on the brass slip ring. But the rear brush has to be grounded or both test leads have to be used on both brushes. One lead on each brush.
Those rotor windings have been famous for grounding shorts.
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