Next message: bob england: "T&T: Self insured vs uninsured"
Paul,
Yes, a failing internal regulator may fail by going either to no field or
full field. An external regulator may be substituted, but the conversion
requires opening up the alternator case to make the connections inside.
There are no instructions for this operation, as there are too many
different alternator configurations. Your best bet is to find an alternator
shop which is familiar with the conversion to external regulator (not all
will be).
If you don't want to spring for a $200+ smart regulator, I can recommend the
Amp-Tech AMP-R14 HD; a manual, adjustable regulator with a heavy-duty output
transistor for the field current. The voltage setpoint is adjusted by
turning a small screw under the aluminum cover. These cost about $45 and
are available from Great-water.com. I use just one to power both of my 120
amp alternators on my John Deere. Best if you can mount it in an easily
accessed location out of the engine room for easy adjustment.
Mark Richter, m/v winnie the Pooh, Ortona, FL
Mark's Mobile Marine, electrical systems design, installation, and repair
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