Re: John Deere 4010

Posted by JD Seller on July 17, 2013 at 22:35:13 from (208.126.196.144):

In Reply to: Re: John Deere 4010 posted by August Lewis on July 17, 2013 at 21:58:29:

The kit they list on here is not the greatest. It is just a cheap gear reduction starter, Delco Alternator, and some light duty battery cables. They state Clearly in the description that it only uses ONE 12 volt battery. This means they are sending you a couple of short battery cables just for the left side.

To convert it you need to get a GOOD starter not a reduction gear one. Then you can use a Delco alternator with an internal regulator. You then have to move the wires on the circuit breakers on the back of the kick panel under the steering wheel. You need to make both "HOT/+) supplies be Positive ground. You also have to disconnect the short jumper wire on the left battery. If I remember correctly that gets moved to the starter battery connection for one of the supplies to the circuit breakers under the kick panel.

Then you need to use BOTH batteries. You can buy the cables from several sources. You basically need to hook the two positive terminals together and ground the Negative ones. That positive cable needs to be a good one not a car battery cable.

Then you need to wire the alternator to supply charge back to the batteries. I usually remove the old regulator and extend the battery wire to the alternator. You have less harness modifying to do this way. You may have to change the fuel sender or gauge. It depends on which one you have whether it can be used with negative ground. The original ones where on the positive grounded battery.

So for someone that is REAL familiar with a JD 24 wiring system it is not hard but for someone else lets just say they need a good set of instructions and a wiring diagram. Then be able to understand the two. I switch several over each year. JD used several different wiring setups on the 24 volt tractors. The JD 4010 and JD 4020 are different. The JD 4020 has 2 or thee different diagrams for the 24 volt system. So I have to look at the actual tractor to remember which is which and what to do.

The guy that said it was easy is either "real" familiar with JD 24 volt systems or naive. To switch them over and have everything work correct takes some thinking to get it all to work right without the harness being butchered all up.

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