Fuel Gauge Switch on JD 830

1) Why a lead to the Generator? Thats so the gauge has power and works when the tractor is turning (button NOT pushed) the generator, its the Generators output thats powerign the gauge when the tractors running.

2) How to hook up??? See below.

3) See Below??

4) What happens is that when you push the button, the fuel gauge receives its needed power and works off the Battery, NOT the generator then, that way you can check the fuel when the tractors NOT running.

**************HOW IT WORKS AND WHY**************

1) The gauge needs power, either from the battery (switch pushed) when the tractors not running,,,,, ,, or from the Generator (switch NOT pushed) when it is. That way, the gauge isnt drawing current and runnign the battery down when the tractors NOT running. But, its stil possible to check the fuel level not running by depressing the switch.

2) That switch is a Single Pole, Double Throw, Momentary spring return type of switch. The 2 Throws are like the 2 contacts, one is Normally Closed (To Gen) and the other is Normally Open (To Battery) UNLESS AND ONLY WHEN the switch is depressed, in which case the gauge is then powered via the battery instead of the Generator.

3) The single POLE is the common switch terminal to teh Gauge and the 2 Throws lead to the Generator (Normally Closed) and the Battery (Normally Open)

4) Take a battery powered light up type continuity tester or an ohm meter and the commom Throw terminal is the one thats in contact with the "to Gen" terminal when switch is NOT depressed, but opens there and makes conatct with the "to BAT" terminal when it is.

Post back or e mail me at jmn50@msn.com or call me at 812-824-4608 any questions.

Good Luck, God Bless, Sure hope this helps yu understand how it works.

John T Nordhoff

~I presume you are working on a pony start system with that 3 terminal switch?

_____ Lets answer your questions first_____

1) Why does it have a lead to the generator?...>>>> Answ, that wire to the generator is to power the fuel gage from the generator when it's charging.. You see those pony start diesels don't have an ignition switch that stays on during use so the fuel gage MUST be powered from a remote source [in the case of your 830 diesel that's from the generator]..

2) How do we hook it up? The terminals are labeled 1,2,3"?....>>>> Answ, I can't help you with the numbers but it won't be hard to figure out.. Just use an ohm meter & find the two switch terminals that are closed with the button NOT pushed,, then push the button & find the two that are closed with the button pushed,, the common terminal that is used for both button NOT pushed & button pushed goes to dash fuel gage,, the terminal that is common with the one going to the dash gage with the bottom NOT pushed goes to the [GEN] terminal on the regulator, the terminal that is common with the dash gage terminal when the button is pushed goes to the [BAT] terminal on the regulator & to the [BAT] terminal on the ign switch. There's is more but the above are the basics.. I will E-Mail you a complete schematic showing the wire routing & connections & operation.

3)The switch appears to have two sides "normally closed" and "normally open"....>>>> Answ, see above..

4) When switch is "off" it appears power goes to generator. When you push the button, power goes to the fuel gauge and is cut off from the generator. Is this correct?....>>>> Answ, that isn't exactly correct. No power goes TO the generator, it comes from the generator [see above]..

John, you didn't furnish your E-Mail address so E-Mail me for a working wire schematic & complete wiring explanation.. I will be happy to help you get that switch wired.. Put 830 wiring in the subject line so I can find it in my inbox..

JDClooney@aol.com

JDClooney@aol.com