JD 770 No Start/Power

Henri88 · Sep 16, 2013

Fishmen222, any update? Did you find your problem?

spring1802 · Sep 16, 2013

Removed starter and returned to shop, guy said someone has been" messing with starter the bolt has been moved" and stripped. I did not argue with him but the starter has not been messed with.I stripped the bolt trying to tighten it and replaced nut but my wife or dog hadn't been near it.Seems if the bolt was not assembled right it happened at the rebuild anyway I will let u all know after I pick it up.

spring1802 · Sep 16, 2013

starter started running hoorah

fishmen222 · Sep 16, 2013

Henri88 said:
Fishmen222, any update? Did you find your problem?

Not yet. Between a sick wife and 12 hour night shifts, I have pretty much left it alone. Here is what I do know, battery, links, fuses and main cables are fine but it sure is acting like a ground issue as I have zero power beyond the main infeed to the starter. I have tried every combination of +/- with the multimeter I can think of to find the break to no avail. I am having a hard time getting to the ignition switch as I need to drill out some screws on the side panel. Which terminal is the constant and which is the "on" (not start)? I would like to jump them out to see if it could be that. My schematics leave a little to be desired. Thanks as always guys.

spring1802 · Sep 17, 2013

that was where the power stopped with mine at the starter connection.When I attached a positive cable from a known good source(auto battery) and the starter did not turn I figured that was the problem. I took it to the shop starter turned when tested.The bolt and nut was stripped,once replaced it is cranking and running.

Henri88 · Sep 17, 2013

Sorry to hear about the wife. Hope everything's gets back on track. Good luck and keep us up-dated. Thanks! Henri

jenkinsph · Sep 17, 2013

fishmen222 said:
Not yet. Between a sick wife and 12 hour night shifts, I have pretty much left it alone. Here is what I do know, battery, links, fuses and main cables are fine but it sure is acting like a ground issue as I have zero power beyond the main infeed to the starter. I have tried every combination of +/- with the multimeter I can think of to find the break to no avail. I am having a hard time getting to the ignition switch as I need to drill out some screws on the side panel. Which terminal is the constant and which is the "on" (not start)? I would like to jump them out to see if it could be that. My schematics leave a little to be desired. Thanks as always guys.

Hope the wife gets better soon.

fishmen222 · Sep 19, 2013

Thanks guys. The wife has been putting up a valiant decade long battle with leukemia. She's happy and feeling ok today, and that's all that matters for now. Will get into the tractor next week while on vacation and report back.

fishmen222 · Sep 21, 2013

Well, found it by accident this morning. I was reinstalling the ignition switch after finding no constant power there and the ground ring sparked. Hmm...there is power at the dash. All is fine now. All I can assume is that the ground ring lost connection though there did not appear to be major corrosion on it. Thanks for all the help guys.