farmall 200 overcharging

R&amp;W · Nov 17, 2014

hello i have a farmall 200 with a farmall 340 engine in it but it is over charging the battery. 6V. ran it all summer never had a problem. just started doing this. please explain.

John T · Nov 17, 2014

1) If it has a Voltage Regulator and its field current control relay points are stuck closed, that could cause it. (I don't think it has a Low High headlight charge control system (but Ive seen all sorts of farmer modifications out there), but if it was always in high that can cause it or the wires shorted coming from FLD on genny

2) If the wire from FLD on Genny to FLD on VR was shorted out, another possible cause.

3) If the gennys Field is shorted near its output (wires to FLD Post inside) or if the FLD post was overtightened cracking the insulation causing it to short, that may cause it, or simply the wire from FLD is shorted somewhere.

4) Sure the battery itself is okay with no bad or shorted cells.

5) Theres more but its supper time yayyyyyyy

John T

Janicholson · Nov 17, 2014

With it running 3/4 throttle, put a volt meter (analog or really good digital) across the battery. It should read 7 to 7.2 volts. If 7.5 or more it is overcharging. See John T info, very good. Jim

gene bender · Nov 17, 2014

What is the hy reading on your batt maybe the batt is bad or even a bad connection. Read all cells they should be the same.

farmall 200 overcharging

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farmall 200 overcharging

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