TO30 Not Charging

Fahmboy · Apr 28, 2014

TO30 is not charging and my question is regarding the ignition switch. I am reading a voltage on the case of the ignition switch even when it is removed from the dashboard panel and still connected to the terminals. To my way of thinking, I dont think there should be a voltage there at all, but I don't know. This is still a 6 volt system. Reading a voltage even with the tractor turned off.

Tony in Mass. · Apr 28, 2014

One side of the switch would be live, both wires when the switch is turned on, atleast that is my understanding of auto electrics. If you have a switch with other light settings, doesn't matter, one should still be live.

Fahmboy · Apr 28, 2014

Thanks Tony. I do have 6 volts at one of the ignition switch terminals as expected. The problem I see is that the outer metalic case of the ignition switch is showing a voltage of 2 to 3 volts when measured to one of the battery terminals. It would seem to me that the casing of the switch should be isolated from the terminals of the switch itself? I guess I will just order another ignition switch and see if it shows a different result.

Steve@Advance · Apr 28, 2014

The switch is probably corroded on the inside from
water contamination. This could cause a battery
drain condition, as in running the battery down
when not in use. Yes, it probably needs to be
replaced. Be sure to get a true replacement switch
or a marine grade switch that is suitable for
exposure to the elements.

Replacing the switch most likely won't fix the no
charge problem though.

Fahmboy · Apr 29, 2014

Thanks Steve. I ordered the ignition switch from yesterdays tractors, so hopefully it will hold up. Will see if that fixes charging problem or not. I hope so, as the generator, voltage regulator, ammeter, and ignition switch are all relitively new, less than 2 years old. I am reading 8 volts on the Bat terminal of the voltage regulator, but the ammeter never moves off of zero and I still read 6 volts across the battery posts. Everything I have found online seems to indicate I should be getting 7-8 volts across the battery posts when charging. Instead, I charge the battery with an external charger and it measures 6.8 volts. Run the tractor for a few hours and it starts to misfire as voltage drops to 6.2 volts across battery posts. I turn it off and it wont restart at 6.2 volts. Have to put external charger back on , charge it up to 6.8 volts and it starts right away

Jason S. · Apr 29, 2014

(quoted from post at 12:04:26 04/29/14) Thanks Steve. I ordered the ignition switch from yesterdays tractors, so hopefully it will hold up. Will see if that fixes charging problem or not. I hope so, as the generator, voltage regulator, ammeter, and ignition switch are all relitively new, less than 2 years old. I am reading 8 volts on the Bat terminal of the voltage regulator, but the ammeter never moves off of zero and I still read 6 volts across the battery posts. Everything I have found online seems to indicate I should be getting 7-8 volts across the battery posts when charging. Instead, I charge the battery with an external charger and it measures 6.8 volts. Run the tractor for a few hours and it starts to misfire as voltage drops to 6.2 volts across battery posts. I turn it off and it wont restart at 6.2 volts. Have to put external charger back on , charge it up to 6.8 volts and it starts right away

That tractor should not only run but start on 6.2 volts. 0.6 volts is not enough to make much of a difference. How old is the gauge? The TO-30 I grew up with quit charging and it was because the gauge had went bad. Run a jumper wire from one post on the gauge to the other and see if it charges. Your other problems sounds like the starter needs to be gone thru and look for other problems to cause the miss.

Fahmboy · Apr 30, 2014

(reply to post at 05:59:41 04/29/14)

TO30 Not Charging

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Tony in Mass.

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Steve@Advance

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Jason S.

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