John Deere 730 Electric start

[JD60Standard]

I have been have been working on my electric start 730 trying to solve some issues. I was wondering if anyone has a copy or downloadable version of Service Bulletin 268 that they would be willing to share?

 

[Jim.ME]

Go down in the Test Forum and see if the one in my recent test post will download for you.

 

[Tx Jim]

What problems are you experiencing with the JD 24 volt system? The JD service bulletin pertaining to 24 volt wiring is available to download & view because I just completed that task.

 

[JD60Standard]

Go down in the Test Forum and see if the one in my recent test post will download for you.

Thank you, I just downloaded it

 

[JD60Standard]

What problems are you experiencing with the JD 24 volt system? The JD service bulletin pertaining to 24 volt wiring is available to download & view because I just completed that task.

I had a the wire the I have circled short out against the tractor, and now none of the electrical on the tractor is working. I am also unsure of what these are that are sitting on top of the starter as there are not listed in the wiring diagram?

 

[Tx Jim]

Those objects with 2 posts are circuit breakers that were adding in a field installed kit from JD in an effort to help control fires started by electrical shorts. You are correct in that there are no photos of those circuit breakers in a JD 730 parts catalog. Wire circled in your photo should only control 1/2 of your tractors electrical system BUT for starter to operate wire on each circuit breaker must have 12 volts.

 

[JD60Standard]

a field installed kit from JD in an effort to help control fires started by electrical shorts. You are correct in that there are no photos of those circuit breakers in a JD 730 parts catalog. Wire circled in your photo should only control 1/2 of your tractors electrical system BUT for starter to operate wire on each circuit breaker must have 12 volts.

I tested the circuit breakers with my multimeter and all terminals read 12volts. There is a wire coming off the breaker and going to a screw in the voltage regulator, I have a new voltage regulator and it does not have this screw in the side, the new voltage regulator has a ground terminal instead. Which terminal should I hook this wire to?

 

[Tx Jim]

Are you sure voltage regular is for a JD 24 volt electrical system? I would think circuit breaker supply should be attached to bat A or B terminal on ign switch.

 

[JD60Standard]

Are you sure voltage regular is for a JD 24 volt electrical system? I would think circuit breaker supply should be attached to bat A or B terminal on ign switch.

I’m not sure, all the electrical worked before except for a draw that was running the battery’s down if it sat for more than a couple days, and I was unable to get the generator light to come on.

 

[Tx Jim]

JD 24 volt starters have a long history of brush dust buildup inside starter causing an electrical drain.

 

[JD60Standard]

The starter was rebuilt about a year and a half ago, I will hook the supply line up to the bat B terminator terminal on the switch and see what happens.