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NH 477 Haybine over running clutch weld

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01-12-2021 04:19:29

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I am planning on doing this repair/modification on our haybine. Does anyone have a picture of this fix?

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01-17-2021 05:09:31

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 Re: NH 477 Haybine over running clutch weld in reply to Axtell, 01-12-2021 04:19:29  
Thanks for the response, Steve!

I have struggled a little with this decision, but in my research I have discovered the overrunning clutch was phased out by New Holland. It seems a replacement fixed sprocket/pulley was introduced. With the age of the machine and the amount it is used was also a factor. That being said I am still unclear on the welding technique and have opted to replace the defective pins, springs and recently discovered missing shims/washers on the shaft. Cost was not too bad for these parts once I found them. The missing washers allowed a 1/4-1/2 inch play along the shaft which separated the clutch enough to prevent the pins from engaging. This also caused the set screw in the sprocket to cut a groove lengthwise along the shaft. Thats the next hurdle.



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01-12-2021 06:45:43

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 Re: NH 477 Haybine over running clutch weld in reply to Axtell, 01-12-2021 04:19:29  
Not sure what you are asking. Are you wanting to weld it solid? DONT!. It's there for a reason. Or are wanting to 'repair' a clutch that someone else welded ? It was welded for a reason,probably because it was 'broke' and didnt work.Either it slipped,or didnt overrun. Replace it.Overrunning and slip clutches are there for a reason. To protect the machine(s) and the operator.To weld them up solid and likewise modify them is foolish and dangerous,just asking for trouble.An accident waiting to happen.

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