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NH 66 Baler Trouble

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Bob Semrau

05-07-2001 07:02:06




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It's going to be baling season in a few weeks, and I thought I would ask for help on a problem I have been having. After this baler has been running for a 3 or 4 hours it starts breaking shear bolts. This always happens when a tie cycle is in progress. What I find is that the needles are loose. All I have to do is pull them against the stop, put in a new bolt, and she runs again for a while (starting immediately with another tie cycle). At this point I have to loosen the tension, or it keeps happening, every 15 minutes or so. Unfortunately, I end up with some pretty light bales, too. I think that the timing is right, as when I am starting out and adjusting the bale tension it can make some real bricks without breaking any shear bolts. I'm thinking that either the timing is changing when it is warmed up, or the needle brake doesn't work when warm. Does anybody have any ideas of what to look for ? Luckily, I make mostly round bales, but I need to make some square bales, too.

Thanks !

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ernie

05-09-2001 11:19:03




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 Re: NH 66 Baler Trouble in reply to Bob Semrau, 05-07-2001 07:02:06  
definately look at the brake, nothing too difficult about it. dissassemble the compression springs and look at the pads. they shouldn't be greasy or worn out to metal. see that springs are not broken, or get new ones. tighten up good but don't bottom them out ( should use lock nuts). what happens is the brake doesn't hold disc when the knotter clutch disengages. needles then bounce backward. needle latch (safety)kicks it to prevent breaking off the needles and you break the shearbolt instead. i'd say you fix soon or you will be buying 150.00 needles before long.

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Bob Semrau

05-09-2001 13:27:36




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 Re: Re: NH 66 Baler Trouble in reply to ernie, 05-09-2001 11:19:03  
Thanks !



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BC

05-08-2001 06:17:51




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 Re: NH 66 Baler Trouble in reply to Bob Semrau, 05-07-2001 07:02:06  
Our 68 was doing something like this. The springs on the needle brake had rusted and the needle was not stopping where it needed to. Fixed that and it was fine.

I've gotten so I shoot some rustoleum paint on the disc (light coat) when we're done for the year, so that there is not a lot of rust to wear off next spring.



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Bob Semrau

05-08-2001 07:26:24




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 Re: Re: NH 66 Baler Trouble in reply to BC, 05-08-2001 06:17:51  
Thanks for the reply. I haven't looked at the brake in detail to figure out how it works, but I was wondering if somehow after being used for a while it got to slippery to hold (or something like that !).



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BFarr

05-07-2001 12:46:02




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 Re: NH 66 Baler Trouble in reply to Bob Semrau, 05-07-2001 07:02:06  
Yes, I agree it sounds like the brake is not holding it in position. Also, check for obvious wear in the arm linkage.



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Bob Semrau

05-07-2001 13:22:16




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 Re: Re: NH 66 Baler Trouble in reply to BFarr, 05-07-2001 12:46:02  
Thanks !

I assume you mean the arm controlling the needles (I'm not looking at the baler right now) ...



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