Posted by Bruce SEKs on June 14, 2015 at 19:52:38 from (64.254.40.205):
In Reply to: Re: Battery Drain posted by Steve@Advance on June 14, 2015 at 18:56:13:
I guess not.
I think my system is hooked up right after reading this
Tape or otherwise insulate the exposed “BAT” stud on the back of the alternator. This terminal is connected directly to the battery - it is “hot” even with the ignition turned off. Should you accidentally bump this stud with a grounded metal tool (like when changing the #1 spark plug) you’ll get an impressive spark and possibly a fire.
2 - The new 12 volt battery will probably be smaller than the old 6 volt unit. Use wood scraps, stiff foam packaging or similar to fill the extra space between the sides of the battery and the box. This will keep the battery from rattling around and shortening it’s life.
3 - Given a choice, use the smallest diameter pulley on the alternator you can find. Reason: The Farmall engine turns slowly relative to what the engines the alternator was originally designed for. And the alternator must be spun up to 2,000 RPM or so to “turn it on” at start up. The smaller the alternator pulley, the faster it gets spun by the engine. So in this case smaller is better.
4 - On 12 volts, the engine will crank (and should start) much faster. However if the engine does not start immediately, limit cranking to about 10 seconds at a time then let the starter “rest” (to cool off) for a minute. Otherwise you could overheat and ruin the starter.
5 - Should you use jumper cables to start the tractor - or use the tractor to jump another vehicle - remember the tractor is now negatively grounded, same as modern cars/trucks. Be sure to connect jumper cables accordingly. (If you hook the jumper wrong, you could ruin the alternators on both vehicles, and toast the computer in fuel injected vehicles)
6 - Save the old 6 volt generator and voltage regulator. You may be able sell these items to a collector, or at a tractor show flea market - even if the generator doesn’t work.
7 - If you get an alternator at a junkyard, take it to a NAPA, Auto Zone, etc. and have them test it to be sure it works before you install it. Most larger parts stores will do this free of charge.
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