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Farmall & IHC Tractors Discussion Forum
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govenor repair

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gene shemek

01-13-2008 15:43:10




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i have 1936 f 20 wondering if it needs a spring to hold fly weights from opening to fast on the govenor engine ran wild after i got it running but now seems to run ok my f 30 parts book shows one but thats for f 3o any ideas




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LenNH

01-18-2008 11:40:08




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 Re: govenor repair in reply to gene shemek, 01-13-2008 15:43:10  
Another penny's worth: The 1936 F-20 did not have a variable governor (the one without springs on the weights), but IHC made a conversion kit, and there were other conversion kits available from aftermarket suppliers. Many of these tractors were converted after farmers found out how nice it was to have complete control over the governor. It could be that you are looking at one of these later governor conversions.

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LenNH

01-18-2008 11:38:26




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 Re: govenor repair in reply to gene shemek, 01-13-2008 15:43:10  
Not sure what you mean. The original IHC governor on all the engines based on this design had two springs that controlled the full-load engine speed. There was not really any governing if you pulled the throttle away from the full-open position. When the weights moved outward with increasing speed, the springs would control just how far they went out and keep the full-load speed where it was supposed to be. The little bulb-like knob that protruded out the back of the governor housing gave just a little adjustment of the full-load speed.
The variable governor that was put on this type of engine late in production (I would guess about 1937, but I would have to do some serial number comparisons to know for sure) did not have any springs on the governor weights. The real "governor spring" was the one pulled out by the throttle rod. In this case, the governor weights acted against THIS spring. In other words, the operator determined the spring pressure. On the earlier governors, the spring pressure was pre-determined, which explains why those governors gave real control only when the throttle was fully open. When you pulled the throttle back, all you did was move some sort of mechanism which acted AGAINST the springs on the governor weights. Clear in my head, I hope it works for anybody reading this messy explanation!

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