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Farmall & IHC Tractors Discussion Forum
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100 oil pump

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Robert in MS

10-18-2005 14:39:49




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What the hey!!! A complete rebuild on my 100 is about to come to fruition and I'm told to make sure I replace the oil pump while I'm at it. The price for this singular item? Over 500 bucks! What's going on here? I haven't had much problem finding everything else but apparently no one makes the pumps. Is this because they rarely fail? Is there a rebuild kit for the pump? As far as I know the pump was fine when the 100 was last run (about six years ago).

Also, is there an after-market hydraulic pump I can use on my B that maybe attaches to the flat belt pulley shaft? I'd like to be able to run a log splitter or some other implement needing hydraulic power.

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El Toro

10-20-2005 03:50:43




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 Re: 100 oil pump in reply to Robert in MS, 10-18-2005 14:39:49  
I would check the body of the pump to make sure
the gears haven't been rubbing & wearing away the metal. I would replace those gears too if they're available. Be sure to set the pump in a
clean container of oil and twist the pump shaft so the pump is primed. That pump is probably
the same as used on the tractors with the C-113 & C-123 engines. Hal



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Dave BN

10-18-2005 19:35:53




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 Re: 100 oil pump in reply to Robert in MS, 10-18-2005 14:39:49  
You can rebuild yours which I would be tempted to do after a total rebuild. New pressure spring and maybe the plunger too depending on how it looks, new bottom plate or resurface yours should be all you need. There is a spec on the gear tooth gap but I don't remember where I saw it. You may need to replace one or both gears if the gap is too big. All of this can be done with the body of the pump still in the engine. Post a picture when your done. Dave

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Jay (ND)

10-18-2005 15:23:03




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 Re: 100 oil pump in reply to Robert in MS, 10-18-2005 14:39:49  
Robert, I could be wrong here, but I think the oil pump is the same pump as the As Bs and Cs - I wouldn't get a new one, but take it apart, replace the pressure relief spring. True up the bottom plate and put in a new gasket. As you will be able to see once you get it apart, there is VERY little to go wrong with them. Fill it back up with oil and put it in.



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