I wonder. I just replaced the brush pack on the alt last year!
Perhaps its faulty?

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Feelstranger
My Wheels
1991 Audi 200 20V Avant
1991 VW Westfalia Syncro/Audi I5
1983 Mercedes 300D turbo
1972 Kawasaki H1 500 Mach III
1970's Limongi/Campy road racing bike
1942 Old Town sailing canoe