sounds like the voltage regulator in the alternator is having issues, but your right, when does a guy idle a tractor other then to warm it up. it's not broke so dont fix it!
That's what I was thinking at first. But I wasn't ready to settle for that so I traced the wires up into the dash and found a ceramic resistor that was causing the voltage to drop. Simple fix now, remove that resistor and replace the plug at the alternator with one of the $3 Delco pigtails that has a resistor built in! Look for part 2 soon.
@@GreenIronGarage hmm I've got a 656 diesel that does that as well, might have to look closer sometime. though if there is a resister there it must be for a reason. maybe to protect something?
Yeah I'm sure there's a reason, but the resistor in the pigtail replaces it and is much much more reliable. A resistor is used to lower voltage. I think to keep the exciter wire on the alternator from going much over 12v.
sounds like the voltage regulator in the alternator is having issues, but your right, when does a guy idle a tractor other then to warm it up. it's not broke so dont fix it!
That's what I was thinking at first. But I wasn't ready to settle for that so I traced the wires up into the dash and found a ceramic resistor that was causing the voltage to drop. Simple fix now, remove that resistor and replace the plug at the alternator with one of the $3 Delco pigtails that has a resistor built in! Look for part 2 soon.
@@GreenIronGarage hmm I've got a 656 diesel that does that as well, might have to look closer sometime. though if there is a resister there it must be for a reason. maybe to protect something?
Yeah I'm sure there's a reason, but the resistor in the pigtail replaces it and is much much more reliable. A resistor is used to lower voltage. I think to keep the exciter wire on the alternator from going much over 12v.