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Farmall Tractors Discussion Board |
Re: Re: 6 to 12 volt conversion for 54 H
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Posted by RK Smith on April 11, 1999 at 08:24:26:
In Reply to: Re: 6 to 12 volt conversion for 54 H posted by RK Smith on April 11, 1999 at 04:53:53:
One last thing - you don't have to change the cables *except* on the battery. You can just remove the cables from the battery, pick it up and turn it around in the tray, and then reconnect the cables. If you think about it, that is more normal than crossing (X'ing) the cables over the battery, cause you see they designed it so that the "neg" terminal was closest to the starter relay, but now you need the "pos" closest, so just flip-flop it. But be careful, since you may have the terminals more "under" the gas tank and a little harder to work on. If you accidentally connect "wrench and tank" on the pos terminal after you ground the neg terminal, we may not get a chance to find out how you did!! And before you flip-flop the battery, make sure that only the "ignition system" is connected, and not any other accessories designed for pos ground, which you will "fry," and if they carry a large enough load, might fry "you". You will have just completed the change to a "neg" grounding system. Also, after this is complete, be sure and pull the starter to look at the starter drive gears. You are fixing to start "hammering" them with a big amp 12v battery, and it will really zip the engine over. If the gears are worn, you could end up with damage to the ring gear on the flywheel. That would mean a "tear down" just for yuks. Take the starter off, and with switch "off offf offfff!!!!!" put the tractor in 5th gear, and rock it forward gently. This will slowly rotate the engine so you can observe the ring gear through the starter mounting hole for condition. I suspect it is ok, but will be worn more in certain areas of the circle, because of the way the tractor "likes" to stop at favorite places in compression. If the starter drive gear teeth are broken, or badly worn, a new drive is about $50 and it takes about 10 minutes to replace it. Just be careful and not damage the "brushes." If you can redo about as good as you can undo, this is a small easy job. RKS
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