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Farmall & IHC Tractors Discussion Forum

IH 330 PTO

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JC Davis

06-29-2020 17:56:03

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My 5-foot bushhog bogs down and makes the PTO clutch of my 330 utility slip in heavy going. I have adjusted the drive band to where it is hard to engage.

Does that mean I need to replace the band, and if so, where can I buy the part?

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06-29-2020 18:57:27

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 Re: IH 330 PTO in reply to JC Davis, 06-29-2020 17:56:03  
One of the most important and serious issues is linkage slop. The pivot on top of the axle often has a wallowed out woodruff Key. Look carefully at the rearward facing lever, and the front handle and move it through the range. There cannot be any lost motion there. Mine was moving 4 degrees before moving the lever on the PTO. If yours is loose fix it first. A new bigger Key, and a broached keway, plus dremel tool work to fix the key pocket can make them tight. This will allow stronger engagement and function.

Adjustment: A Band type with the adjusting screws under a small dome, first make sure there is no lost motion in the linkage where it pivots. Move the lever to half way in its travel and bungee it there. Loosen both bands so the shaft turns by hand. tighten the front band so the shaft won't turn by hand, then loosen it about 1-1/4 turns, or till the shaft just turns by hand, then the same with the back band. This allows the drive band to be fully released when braking, or the brake band fully released when driving. Jim

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JC Davis

06-29-2020 21:12:55

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 Re: IH 330 PTO in reply to Janicholson, 06-29-2020 18:57:27  
I'll give the adjustment a shot tomorrow. Thanks.


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06-29-2020 18:16:33

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 Re: IH 330 PTO in reply to JC Davis, 06-29-2020 17:56:03  
Right here on YT store. (Part No: 359059R91) I think both are the same. Jim

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JC Davis

06-29-2020 18:32:31

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 Re: IH 330 PTO in reply to Janicholson, 06-29-2020 18:16:33  
Thanks for the info I'll make a note of it and keep it while I decide on a course of action.

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06-29-2020 18:12:45

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 Re: IH 330 PTO in reply to JC Davis, 06-29-2020 17:56:03  
No, it means you need to drop down a gear or two!

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JC Davis

06-29-2020 18:29:20

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 Re: IH 330 PTO in reply to Cmore, 06-29-2020 18:12:45  
That makes senses Cmore, but I already did that--often and all the way down to 1st sometimes. I'm thinking of sharpening the blades. The drive band adjusting screw is in below the top of the jam nut.

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06-30-2020 04:46:49

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 Re: IH 330 PTO in reply to JC Davis, 06-29-2020 18:29:20  
That band is toast. Jim

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