580 e won't start

[notsmart]

I went to start my 85 case 580 super e. Turned over but weak. So I went to jump it. Kid arced the positive to the body. Won't start now. Get clicks like hardhead, I'm going to check the ground, (this was the problem once before). I might have a wiring chase. Does anyone know a case guy in my area? Summit county Utah.

 

[Coy Lancaster]

I don't know anyone in your area but you need to check the two relays on the side of the block to make sure they are good and didn't short out when battery was arched.

 

[Delmer]

Get clicks like hardhead...

What does this mean? maybe it doesn't matter, you need to put a multimeter to work to see where you have voltage and where you don't. Like start at the solenoid terminal and ground, any voltage between those two when you have somebody try to crank it? then work back toward the battery, or toward the engine (through the solenoid and starter) That will identify the bad ground if you can tell what you're measuring.

 

[edgephoto]

Measure the voltage drop. If you have a voltage drop you have added resistance in the circuit from corrosion, a loose connection or just a poor connection.

Set the meter to DC volts. Put one lead on the ground terminal of the battery and the other lead on the case of the starter. While cranking or attempting too read the voltage. In a perfect circuit it should read zero. High amperage connections like that can read up to a volt.

Then connect one lead to the positive terminal at the battery and the other to the starter positive connection. Crank and watch the meter. Again more than a volt you have issues.

This will tell you which side of the circuit is giving you trouble. Then you can half the circuit and measure until you find your culprit.