If undercharging... such as low voltage of 13.4V or lower, you can get away with just changing the brushes/regulator one time.
4 Grand Master
If undercharging... such as low voltage of 13.4V or lower, you can get away with just changing the brushes/regulator one time.
I replaced the bearings on mine a couple of weeks ago. Car parts places wanted ~$25 for the larger bearing, and about 1/2 that for the smaller one. I went to a farm implement place (Case, IH, Deere, etc.) and bought better bearings for 1/6 the price. Had the contact rings turned on a lathe for $10. Aftermarket regulator/brush assy. cost $13. Rebuilt the old regulator with new brushes for ~$3. Now have, practically speaking, a new alternator, plus the old regulator with new brushes as a backup. Total outlay less than $25, plus some running around.
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