730 John Deere 24 volt starter wiring

trickydick

New User
I have installed a new 24 volt starter on my 730D. It was someone's conversion from a pony motor and the new starter I am installing has different posts on the solenoid and starter than the one that was on it. This starter is a Delco Remey 41MT. I need an exact image of the all post connections if someone has one to send. All of the wiring diagrams I have found don't seem to show me the positive connections from the battery to the starter and solenoid clearly.
 
It is IMPOSSIBLE to help you with the info provided.

Is this a system that is 24 Volts above chassis ground, or a copy of the OEM 24 Voltsystem that's got a +12 Volt side and a - 12 Volt side?

Is there an alternator or generator to keep the batteries charged?

Was it set up so the fuel gauge functions?

How about the lights?

At the very least, a photo of the starter you are replacing with the P.O.'s connections intact, and a photo of the starter you are trying to install MIGHT make it possible to help you.
 
DITTO to Bobs post. The old pony motor system was 6 volts, you state it was converted to electric start, was the conversion to 12 Volts (like many) or actually 24 volts?? You stated a 24 volt starter in which case you would need a total of 24 volts battery configuration so how was that configured and kept charged and how were 12 volt loads powered?? It would be quite an undertaking to electrically convert a 6 volt pony start system to a full fledged dual hybrid 12/24 like Deere used. Is it REALLY a 24 volt starter system???

John T
 
As Bob said, lots of detailed photos will be a good "starting" point for those who can MAYBE help you. Where are you located? Maybe someone posting here lives close by and could help in person.
 
(quoted from post at 12:30:03 08/21/18) could be simpler to reinstall the proper four cylinder starting engine .

What if trickydick doesn't have the proper 4 cylinder engine at their disposal? I would think correcting wiring would be a simpler task especially for a nuclear plant electrician such as you.
 
Thank you for all of the responses, but I am not as lost in this project as some may think. I do not have a pony motor at my disposal and am not looking for one. I had one on the 830 I restored a few years ago and sold. This tractor was converted before I bought it and it worked fine until the starter went bad. It is a 12 volt system for lights with that is split as the schematics from John Deere indicate also. But, it is 24 volt start with the 2 12 volt batteries connected in series and a ground wire correctly placed from the connecting post to the frame for the 12 volt systems. But, this starter does not have the same connections on the solenoid or the starter. Therefore, I think this is where my problem lies because I am not getting the 24 volts to the starter. I have a knowledgeable guy who can help me when he gets time but I may be able to make the correct connections myself.... just a little reluctant to make a big mistake.
 
Have you checked the Delco Remy site? If not, there are a couple starter instruction sheets there that point out connections on the 41MT starters and solenoids that may help.
 
(quoted from post at 13:07:37 08/22/18)
(quoted from post at 12:30:03 08/21/18) could be simpler to reinstall the proper four cylinder starting engine .

What if trickydick doesn't have the proper 4 cylinder engine at their disposal? I would think correcting wiring would be a simpler task especially for a nuclear plant electrician such as you.

Given the number of crippled pull chain started two cylinder diesels with a non functional electric start conversion . You would think most people would know better than to get in over their heads. By “improving” the tractor by removing the starting engine.
 

b&d
Do you have any fact's on number of 2 cyl JD diesels in the North America that have had their gasoline starting engines removed & must be started by towing with a chain to back up your "OPINION"?
 
(quoted from post at 09:20:40 08/23/18)
b&d
Do you have any fact's on number of 2 cyl JD diesels in the North America that have had their gasoline starting engines removed & must be started by towing with a chain to back up your "OPINION"?

Take a count on this an other sites for how many people think a starter , one wire alternator and battery will be a quick easy cheap solution to all two cylinder starting challenges
 

Doing as you state would provide no real facts to substantiate your OPINION. I haven't read where anyone stated changing a JD 2 cyl diesel from gasoline starter engine to elect start was a ""sure cure for anything"" except 2 cyl diesel tractor owner certainly would no longer have a need for gasoline to start the diesel engine.
 
(quoted from post at 12:55:14 08/23/18)
Doing as you state would provide no real facts to substantiate your OPINION. I haven't read where anyone stated changing a JD 2 cyl diesel from gasoline starter engine to elect start was a ""sure cure for anything"" except 2 cyl diesel tractor owner certainly would no longer have a need for gasoline to start the diesel engine.

How many questions on their electric start conversions that don’t work?
 
(quoted from post at 09:41:00 08/24/18)

How many questions on their electric start conversions that don’t work?

I don't have a clue how many questions are asked about 24 volt elect start conversion that don't operate correctly questions are asked BUT that has really no bearing on the number of ES conversions that operate correctly.

I thought one of the reasons for a tractor discussion forum is to discuss problems that arise from owning/repairing such implements.
 
Thanks to each of you who responded to my questions about wiring my new 24 volt starter into my 730 Diesel. I ended up rewiring the entire tractor because the wiring was old, brittle, and was not wired correctly when it was converted from a pony starter. After enough different wiring diagrams, one of the diagrams on line was the most reliable. The main problem with the rewiring came because of the different connections on the new Delco Remy 41MT starter. But, WOW, this starter is smooth and more than adequate.

Thanks Again! Trickydick
 
I picked a lot of information from someone on the internet about how to wire the starter to the ignition switch and he provided a hand wiring diagram of the same which was very helpful. But, since I rewired the entire switch and installed a new switch, I used the wiring diagram for the entire electrical system from a John Deere shop manual for a 730 Diesel. The other information on the pictures was from Delco Remy that came with the starter.
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