Some claim you can carefully split a Delco Si series alternator enough to reclock it without losing a brush off the rotor sliprings. I have never been able to do that, always had to split it totally, repin the brushed and dreassemble it clocked the way you need it.
REMEMBER!!! Split it between the front aluminum case half and the steel stator ring, not between the rear half and the stator ring or you will wreck the stator leads.
Also If you need to pin the brushes and use a metal wire, MAKE SURE you remove the wire before installing and powering the alternator.
Many better quality brush sets use a nylon pin to hold the brushes. Accidently Leaving the non conductive nylon pin in place when reinstalling the alternator and powering the #1 regulator will cause no harm. With a metal pin in place, a dead short is created that will instantly destroy the regulator or inline diode.
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Today's Featured Article - A Lifetime of David Brown - by Samuel Kennedy. I was born in 1950 and reared on my family�s 100 acre farm. It was a fairly typical Northern Ireland farm where the main enterprise was dairying but some pigs, poultry and sheep were also kept. Potatoes were grown for sale and oats were grown to be used for cattle and horse feeding. Up to about 1958 the dairy cows were fed hay with some turnips and after that grass silage was the main winter feed. That same year was the last in which flax was grown on the farm. Flax provided the fibre which w
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