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Re: Wacky Idea?
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Posted by F-Dean on July 15, 2007 at 16:37:24 from (67.72.98.94):
In Reply to: Wacky Idea? posted by Goose on July 15, 2007 at 16:18:59:
BIG JOHN has been putting a Hitachi #14231 alternator on several tractors in place of a generator under the hood. This alternator was used on 1978-79 Nissan 620 pickup with a 2 liter engine and a 1980 Nissan 720 pickup with a 2 liter engine. At NAPA it is part #2138130. The cost of a rebuilt alternator is approximately $50 + core (And they won’t take a generator as a core). The alternator is 4 1/2" in diameter and 7" in length and will go right on the original mountings on the tractor. Use an 8" x 3/8" bolt and some pipe and/or washers for spacers. Being Hitachi means that it is METRIC. You will need to drill out the mountings to 3/8". The tension adjusting bolt is also metric thread. The alternator is a three (3) wire set up which can be converted to one (1) wire. There are spade connections labeled S & L and a BAT post connection. The L spade is for the idiot light and can be disregarded. Use a jumper wire from the S spade to the BAT post and you are good to go. The pulley may be a split type that you can widen using a spacer (once again metric). You may need to use a disc type lock washer and some “Locktite” because there won't be room to reuse the split lock washer that comes with it. I put the washer between to parts of the pulley to make it fit the existing belt. I have installed 4 Hitachi alternators – two were split pulley and the most recent two were not. There is a built-in regulator and a resister to keep the battery from feeding back to the alternator. This is a sweet fit under the hood that he has used on H's, M's and W models, also Cubs and many others. I add the following from my experience: Be sure to switch the polarity of the battery to Negative ground to avoid damaging the Alternator. Consequently, you need to switch the wires on the coil, if you are using a coil. Use a plastic covered connection when you connect the jumper wire from the S spade On a Farmall M, turning the bracket upside-down will allow the alternator to fit nicely inside the hood using the existing generator belt. I have installed two Hitachi #14231 alternators on two Ms and two on F-20s without any problems.
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