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#1
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108 Voltage Regulator Wiring
I'm trying to help my dad with a 108 that he got. It was missing the voltage regulator, so we bought one to put on it. It has 4 terminals. The 3 together on the front are labelled L, BAT, F, and there's one on the back side that's unlabeled.
I've used a diagram such as this: http://www.cubcadetcollectors.com/ma...serialNumber=1 but the labels are not the same. I tried connecting F to F, G to BAT, and B to L, and ground to the terminal on the back. But, when putting the battery cable on, there was a very bad spark, so I'm assuming this is incorrect. Any help? |
#2
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Light gray wire to terminal B, battery.
Yellow wire to terminal F, field from F post on s/g. The L post is load. Leave that one disconnected. The light blue wire is G, generator. I believe that gets connected to the unlabeled terminal on the back. And ground wire to the mounting bolt. I'm having the same issue myself tonight on my 169, I may be incorrect but will be finding out shortly. No pun intended. |
#4
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Yeah, that's the diagram I'm using, but the terminal labels on my regulator do not match what's listed.
J-Rodz, let me know if that works. Is the the load disconnected just becuase it's different regulator? Seems odd to leave a wire disconnected. |
#5
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You DON'T leave wires disconnect at the V/R. You do not use the "L" terminal on that type of V/R.
Are you using the correct V/R...??
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Roland Bedell CC Models: 100, 105, 1450, 782, (2) 784, & 2072 Buy: Made in the USA |
#6
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Quote:
Your 108 originally used the 3 terminal on the front and a single ground terminal out the back. It seems like you have a combined unit with an "L" terminal at the front and the GEN terminal on the bottom. Either will work but will be wired slightly different. If you stay with the combined unit then you can attach the wires as in the diagram you posted using the G, F, B terminals. The "L" terminal is left unconnected to any wires. Your ground wire from the tractor will not connect to any ground terminal on your regulator since there is none but can be attached and grounded to the regulator mounting bracket. Be aware, the location of the terminals on your regulator will not be the same as in your diagram. Use the terminal markings on the regulator to place the wires. Another option is to get the correct regulator and wire according to the diagram but either will work if wired correctly. The are some differences between the standard uit and the combined unit but likely no notable functional differences in this case. Just wire it correctly for the type of regulator you have. Wiring as you did may have burned and welded the cutout points. Before connecting any wires to the regulator, measure the resistance between the GEN terminal and the BAT terminal, should be infinity. It will be close to zero if the cutout points got welded together. |
#7
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Quote:
Landreo covers everything else pretty well below. Also, once you get it working, measure the output voltage at full throttle and make sure it's in the right range (~13ish volts). I've had them measure 16v out of the box, and that will lead to problems in the long run with the coil, points, and overcharging the battery.
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125, 127, 2x IH 682, 2x IH 782, 2084, 3225, 2x3240 |
#8
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Finished making a entirely new wire harness front to back due to aged insulation. With the exception of leaving the load terminal unused, I wired the v/r same as factory and is now working as intended. 14.12 volts at full throttle, and 13.41 volts with the lights on. Ideal_trucks the other gentlemen are correct, your 108 originally did not have a load terminal.
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