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Implement Alley Discussion Forum

NH 268 Knotter/tail too short

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DBain

06-06-2006 08:05:08




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My NH 268 baler is cutting the twine too close to the knot such that it will sometimes pull through the knot when you pick the bale up. I have adjust the leaf spring to increase the length of it but then it gets stuck on the knotter and sometimes have several bales worth of knots stuck on it until I realize what is going on. I have included a link ( http://www.reedbird.com/baler/ ) with pictures of the knotter and what the knot looks like.

Thanks for any help.

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Steve from New Holland

06-07-2006 04:30:16




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 Re: NH 268 Knotter/tail too short in reply to DBain, 06-06-2006 08:05:08  
With plastic twine, you actually need to have LESS tension on the leaf spring. Also, decrease the tension on the clamp over there on the bale box. (That little plate with one spring thru the middle of it right where the twine comes out of the bale box) People often make the mistake thinking that smooth plastic twine will need more tension on it, but it is the other way around. Steve



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Roy in UK

06-07-2006 03:56:00




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 Re: NH 268 Knotter/tail too short in reply to DBain, 06-06-2006 08:05:08  
It looks like a dull knife.be careful if you start messing about bending the knife arm, remember the wiper has to swipe the the knot off the billhook cleanly. If the knife has been tearing the twine, there could be quite a bit of what I call "retainer swarf" i.e. bits of twine trapped in between the retainer and retainer disc.Loosen it off and clean any bits out.
NHBalerman, I copied the pic. and "blew it up" to get a better look, do you think the twine is sitting correctly in the retainer? should it not be sitting in the notch of the retainer disc?

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DBain

06-07-2006 04:24:42




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 Re: NH 268 Knotter/tail too short in reply to Roy in UK, 06-07-2006 03:56:00  
Roy,
Yes, the twine should be sitting in the notch of the twine disc as there is a picture in the manual that shows exactly that but the adjustment I am supposed to make to fix it does not work. I am supposed to just loosen the nut at the bottom of the worm gear that is below the grease fitting you see in the pic but the disc just refuses to move and/or the worm gear does not move enough. I will try again..

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Steve from New Holland

06-08-2006 04:25:40




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 Re: NH 268 Knotter/tail too short in reply to DBain, 06-07-2006 04:24:42  
The worm is on a tapered shaft. Just loosening the 3/8" nut will not loosen the worm gear. Go ahead and loosen the nut 1 to 2 turns. Then take a hammer and smack the nut a good one. This will drive the tapered shaft thru the gear and allow the gear to turn freely from the shaft. Be sure to retighten the nut real tight after adjustments are made. Steve



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DBain

06-10-2006 19:48:49




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 Re: NH 268 Knotter/tail too short in reply to Steve from New Holland, 06-08-2006 04:25:40  
Thanks. That seemed to work.. I was able to rotate the worm gear off the shaft completely, adjust the disc over slightly so the twine should lay in the notch correctly now, and rotate the worm gear back onto the shaft.

Could this possibly cause the twine to be too short after the knot? I tried baling again before I was able to make this adjustment, and loosened the leaf spring next to the porblem knotter and then the knots would not fall off the bill hook.. which required me to stop and cut the twine off the bill hook.. retighten the leaf spring and wait to figure out what other adjustment needs to be made.. the other side works perfectly so you'd think I'd be able to compare the two..

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DBain

06-12-2006 16:43:58




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 Re: NH 268 Knotter/tail too short in reply to DBain, 06-10-2006 19:48:49  
Ok.. I baled about 20 bales and the twine is still in the notch on both discs AND the baler didn't mess up baling a single bale! The twine is also slightly longer after the knot and the knot is tight.. Produces almost perfect bales now.

Seems like there is any number of adjustments that might need to be made to make this baler work.. just be sure to check all the easy ones first and it might fix the problem...as I have learned..

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Roy in UK

06-07-2006 04:56:16




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 Re: NH 268 Knotter/tail too short in reply to DBain, 06-07-2006 04:24:42  
Phew! I have not touched a baler knotter for about 20 years, my memory must be better than I thought it was. I thought it did not look right somehow. If you loosen that nut I think that worm gear is on a tapered shaft?



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RickB

06-07-2006 03:36:32




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 Re: NH 268 Knotter/tail too short in reply to DBain, 06-06-2006 08:05:08  
Knot tail length is adjusted by bending the knife arm to achieve the specified 1/2" between the knifearm and billhook at the arm's furthest travel. An operator's manual is a wonderful thing to spend $20 on.



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NHBalerman

06-06-2006 18:52:56




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 Re: NH 268 Knotter/tail too short in reply to DBain, 06-06-2006 08:05:08  
From the looks of your knot and the fact that you are using plastic twine get you a knife kit from New Holland,#615073 and replace the cutter knife it comes with knife and screws and see if that helps.



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DBain

06-07-2006 04:29:15




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 Re: NH 268 Knotter/tail too short in reply to NHBalerman, 06-06-2006 18:52:56  
I will get the knife kit and see if that helps as well.. I really didn't notice the frazzled look of the cut until you pointed it out.. Don't like the sisal twine because of whatever the stuff is they soak in it to preserve it stinks so bad.. and wife doesn't like that!



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