Posted by Texasmark1 on April 26, 2013 at 15:29:22 from (184.21.28.126):
In Reply to: john deere 4230 posted by Matt McKinney on April 26, 2013 at 14:03:11:
I had one. The problem as I saw it was the way the batteries were installed and wired. First they use 2ea. 6v batteries in series...daisy chained, one behind the other. What this does is to put the internal resistance of the batteries (and all batteries have this) in series so the current that you want to start your tractor has to pass through 2 resistances.
The next problem is they use 1/0 wire. The ground for the right side battery is at the engine block adjacent to that battery. Then from that rt. side battery the single 1/0 wire goes under the cab and over to the left side battery. Then through the battery and onto the starter solenoid.
I had one wired like that and in the winter I had to use a starting aid.
So to solve the problem, as it was awkward to remove a radiator screen and shoot ether into the inlet drain (rubber squeezie), I just rewired and rebatteried my tractor.
I got 2ea 31 series 12v OTR truck batteries from a local OTR shop for about $60 each. Cheap because they used them by the skid and got a good price break.
While there I had some custom cables made up. I had them made from 2/0 wire with 3/8" terminals to fit the 31 batteries....no lead posts problems.
I ran both wires from the right battery over to the left battery which is sitting adjacent to the starter. Now I have 2ea. 2/0 wires connecting two 12v batteries in PARALLEL which halves the circuit resistance ( rather than doubles it ).
Then with the left battery sitting adjacent to the starter, I connected that battery with about a foot of the same wire hot (+) to the solenoid, and return(-) with about the same length to the case of the starter mounting bolt.
I don't need to elaborate on the subject. When I hit the starter that sucker didn't roll more than about 3-4 revs and she was lit. No more ether and no more grinding the starter.
This cost about $250 and considering the price of the tractor well worth the expense.
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