Posted by Jon Hagen on January 24, 2010 at 22:15:08 from (69.26.23.125):
In Reply to: 1 wire alternator posted by brian 1855 on January 24, 2010 at 15:43:11:
When you build or buy a 1 wire Delco alternator, insist on nothing larger than a 37 amp model. They excite at aprox 1/2 the rpm of a 61 or 72 amp model. Aftermarket stators( the part that decides the amp output of the alternator) are cheap to rebuild a used alternator to a 37 amp 1 wire model. A 37 amp 1 wire alternator is much more forgiving of rpm and is usually far more amps than an older tractor needs.
If a 1 wire alternator is new, or has not been used for a long time, it may need a field flash to restore the residual magnetism to get it charging the first time. Field flashing a 1 wire alternator is simple. With the tractor running at mid speed, momentarily use a jumper wire to connect the #1 regulator blade in the side of the alternator to the big BAT stud on the rear of the alternator.
This is a 1 time deal, you should not have to flash the alternator again unless the alternator has been disassembled or remains unused for a very long time.
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