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Rudolph Diesel
Rudolph Diesel, ASE ,Master Heavy Truck Technichian
Category: Heavy Equipment
Satisfied Customers: 1793
Experience:  25 YEARS OF HEAVY EQUIPMENT REPAIRS
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I have a John Deere diesel tractor that wont start. The battery

Resolved Question:

I have a John Deere diesel tractor that won't start. The battery is fully charged, and the dash lights and headlights are bright. It will not turn over or even "click" like it's trying. There is no clutch starter safety switch, but there is a range shift lever starter safety switch. Is there a way to eliminate this switch or diagnose the problem? I have the "shop manual" but it is of limited value with the electrical system.
Submitted: 5 years ago.
Category: Heavy Equipment
Expert:  Rudolph Diesel replied 5 years ago.

Hello

Welcome to JA!

I would start at the start switch and go out from there.

start switch

start relay

start solenoid

starter

 

to check the range shift switch

check for power in if switch is working there will be power in and power out

if not working there will only be power in

also common problom is a poor ground.

 

Let me know if i can help more!

Hart

 

 

Customer: replied 5 years ago.
Hi, Hart, I am not proficient in diesel engine wiring, so do you have a reference for a wiring diagram somewhere. I understand how to test these things with a meter, but I'm not sure I would recognize them. I took pictures of the engine before I left it (it's 30 miles away from my home at our ranch).
Expert:  Rudolph Diesel replied 5 years ago.

Let me do some checking to see if there is any non copy right links to help on this.

Hart

Customer: replied 5 years ago.
I've tried John Deere Shop Manual from I&T online, but like I said before it does not have a diagram, and they have no other ones available for this model.
Expert:  Rudolph Diesel replied 5 years ago.

Can i get the vin on your tractor.

Hart

Customer: replied 5 years ago.
I'll have to drive out to the ranch and get that, I forgot when I was there yesterday. I'll get back to you as soon as I return here.
Expert:  Rudolph Diesel replied 5 years ago.

Thank you,

I have some hits on a good manual with the electoral but there needing the vin info,

 

Hart

Customer: replied 5 years ago.
Okay, here is the serial number: *CH3057D215142* and the model number: 3T90J
Expert:  Rudolph Diesel replied 5 years ago.

Thank you !

Hart

Expert:  Rudolph Diesel replied 5 years ago.

Hello

Here is a link for a detailed service manual.

http://www.ssbtractor.com/tractor_manual_search.cgi?tractor_manual_make=John+Deere&tractor_manual_model=950

Let me know if i can help more!

Hart

Rudolph Diesel, ASE ,Master Heavy Truck Technichian
Category: Heavy Equipment
Satisfied Customers: 1793
Experience: 25 YEARS OF HEAVY EQUIPMENT REPAIRS
Rudolph Diesel and 2 other Heavy Equipment Specialists are ready to help you

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