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Implement Alley Discussion Forum

273 New Holland baler!

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Big Jim

01-07-2004 12:24:45

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I have a 273 NH baler that works great, except that it will shear a pin out of the blue(even with very little hay in it) about every 30 or 40 bales. It always makes a klinking noise just before tying each bale. I was told by a friend, that there are some worn bolt holes(If I understand him correctly) something about a long flat bar on the left side of the baler that causes it to be slightly out of time. I have a manual, but I still do not think I am understanding him correctly. He cannot come to fix it, as he lives hundreds of miles away and can't get away from his dairy farm. Any help would be appreciated.

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Big Jim

01-09-2004 09:19:13

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 Re: 273 New Holland baler! in reply to Big Jim, 01-07-2004 12:24:45  
Thanks to everyone for their help. I am going to look at everything that was suggested here. I am going to break apart some round bales and bale them up into squares to be fed inside. Otherwise, there isn't a whole lot of need for a baler in Wisconsin in January.

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RickB...Knotter home posi

01-08-2004 15:59:28

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 Re: 273 New Holland baler! in reply to Big Jim, 01-07-2004 12:24:45  
Check the home position of the knotters. If the needle bail crank arm is AHEAD of the imaginary line between the knotter shaft and link's pivot pin on the needle bail, the knotter brake will not consistently hold the knotter & needles no matter how tight it is. Find this adjustment in your manual and carefully check it. I find a maladjusted knotter home position to be the single greatest cause of random shearbolt failures.

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01-08-2004 06:18:43

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 Re: 273 New Holland baler! in reply to Big Jim, 01-07-2004 12:24:45  
Big Jim,
I use a 273 that should have been scrapped out years ago. Last year mine started shearing bolts. I had to slow down the pto speed a little to get it to run. After a bolt sheared I started looking over the hole baler. 1) Rust and age had broken the right side mont on the knotters. This kept the needles from fully retracting and the safty dog was still up enough to catch the plunger. 2)The balers timing was off by one chain link. This added to the problem. 3)The shear knife on the plunger was in bad shape, this caused problems in the thicker windrows. I was able to test the baler by feeding it broken up mulch bales with a pitch fork. It is easier to work on in the yard than the field. Steve from new holland may know how to check and set the timming. I've loned out my book ot someone who has lost it. Good luck.

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Steve from New Holland

01-08-2004 04:23:22

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 Re: 273 New Holland baler! in reply to Big Jim, 01-07-2004 12:24:45  
Big Jim, the number one cause of your problem is a worn brass bushing in the center of the flywheel. Take the shearbolt out and grab the flywheel at the top and bottom and try to tilt it. You will find that the flywheel has too much wobble. I am not concerned if it moves back and forth, but you can not have play in that center bushing. Also, look at the holes where the shearbolt goes thru. If eggshaped, replace both parts as well. This will stop that shearing bolts for no reason. Steve

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01-08-2004 18:51:23

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 Re: Re: 273 New Holland baler! in reply to Steve from New Holland, 01-08-2004 04:23:22  
Amen on the bushing. My old 65 was shearing bolts out of the blue too.The flywheel would wobble, especially while cornering, and that would weaken the bolts and they would let go on a wad of hay. The bushing isn't hard to change, just get the pto off, remove the flywheel, don't drop it on your foot as it's heavy, and use a chisel to remove the bushing. Good luck.

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01-07-2004 19:13:06

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 Re: 273 New Holland baler! in reply to Big Jim, 01-07-2004 12:24:45  
Tighten the knotter brake a little. This is usually the trouble when shearing bolts in light hay. Rough ground will cause the needles to move into the chamber and plunger block will activate.

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Sam H.

01-07-2004 17:54:45

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 Re: 273 New Holland baler! in reply to Big Jim, 01-07-2004 12:24:45  
There is a bushing in the flywheel that the shear pin goes through that can get worn and messed up after awhile. If that looks worn it will cause the pin to shear.

The arm that tells the knotter when to tie will clunk when it gets to the top and make a clinking noise when it drops back down to start another bale. Doesn't mean anything is wrong.

Check the pads on the disc brake that holds the needle arm in the back position. If worn the needles will move forwards and make the shear block hit the plunger arm underneath.

We ran one of these for 25 years. Not big on capacity, but a good little baler. Put over 10,000 bales through it a lot of years.

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01-07-2004 16:38:29

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 Re: 273 New Holland baler! in reply to Big Jim, 01-07-2004 12:24:45  
Make sure shear bolt stays tight. The shear bolt in my 273 will work loose, and that will cause the bolt the shear. I snug mine up ance or twice a day. By doing this I used the same shear bolt for a season and a half. This is a simple enough fix to try. If it is out of time as another post sugests I would correct the problem quickly before it gets worst and cause severe damage.

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01-07-2004 16:21:35

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 Re: 273 New Holland baler! in reply to Big Jim, 01-07-2004 12:24:45  
You might check the spring return on the plunger stop. It might be weak or just get stuck, this would cause problem as you describe.

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01-07-2004 15:17:15

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 Re: 273 New Holland baler! in reply to Big Jim, 01-07-2004 12:24:45  
Is he saying the plunger stop is going into the chamber before it should & you need to slightly adjust that flat bar from the fork frame to the plunger stop? My 270 was doing that. A very tiny bit (1/16" or less is all I moved mine) can do a lot.


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