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Harry Ferguson Tractors Discussion Forum
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Carb adjustment Testing generator

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Mick74

03-19-2007 04:32:52




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Thanks all, for your help with the coolant question. Now here's a few more. I have just rebuilt the Marvel Schebler on my TO 30, what is a good intitial adjustment after re-install ? Also, should i be able to check if my generator is putting out with a multi meter? It's back on the tractor, would my amp meter gauge tell me if it's functioning properly? Thanks for the help.




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gshadel

03-19-2007 09:05:24




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 Re: Carb adjustment Testing generator in reply to Mick74, 03-19-2007 04:32:52  
Initial settings after a carb rebuild are 7/8 turn open for the idle mix screw (small screw), and 1 3/8 turn open for the power screw (big screw). The idle mix needs set when the engine is running at 400-500 rpms, otherwise it will have no effect.

Your generator will put out full power if you ground (should be positive ground system) the F "field" terminal on the generator to ground, or the pos. terminal on the battery, with the engine running ~ 1/2 throttle. That basically bypasses the effect of the voltage regulator. If you do that, your amp gauge should increase to ~15 amps or so within a few seconds. If it don't, your generator, or amp gauge is bad. Check the voltage across the battery when you do that, it should read ~7 volts. Often, charging problems are due to a faulty, or poorly grounded voltage regulator, and not the generator.

George

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