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Implement Alley Discussion Forum

Bustin fly wheel shear bolts on NH68

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Kelly C

07-16-2004 21:09:40

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Well I have to go along with The other guys that recomended to set the knotter timing advanced one link or so on these old girls.

I was shearing a bolt about every 30 bales or so. Would seem to go in streaks. Would get a nice run of 75 or so with no problems then would bust a few in 15 bales and always and I mean always would bust atleast 3 on the last row. Grrrrr!

I tinkered and tinkered with the knotter brake and the plunger stop settings over and over to no avail.
Today I checked the timing and it was set exactly per the manual. I then losened the knotter drive chain and advanced it one link. Tigtened it back up and tripped the knotter. Ran it through by hand one time and nothing hit or clanged.
I set to baling made the whole day with out bustin one shear bolt. She would eat the biggest windrows with out so much as a hick up.

I had felt that I had a pretty good baler after the rebuild, just needed to fix the shear bolt thing. Now I feel I have an excellent baler.
Thanks for the advice guys.....

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Hayfarmer

07-17-2004 09:56:01

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Re: Bustin fly wheel shear bolts on NH68 in reply to Kelly C, 07-16-2004 21:09:40

Years ago when I worked for NH and JD I always set the needles to enter the bale case as close behind the tip of the plunger extensions as possible. Seemed to bale better and the knot was done before the hay had a chance to spring back as much. I now have an old 282 NH. I blaled a needle. There is some slop in the lift arm and the needle brake was not holding. I retarded the timing 1 notch and that seemed to work well on it. Are yo hitting the plunger safety catch to cause your shear pins to break? I ran a 3 tie Freeman for a season a while back. The service guy with those recommended retarding the needle timeing a bit also.

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Steve from New Holland

07-17-2004 04:34:46

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Re: Bustin fly wheel shear bolts on NH68 in reply to Kelly C, 07-16-2004 21:09:40

This is very true. Old balers have worn play in everything including stretched chains. Jumping ahead one link is probably ok, but if you go too far ahead, you run the risk of breaking a needle, even though everything is working. Steve

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txblu

07-17-2004 05:49:01

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Re: Re: Bustin fly wheel shear bolts on NH68 in reply to Steve from New Holland, 07-17-2004 04:34:46

Steve,

You mentioned stretched chains, I popped the chain on my pickup reel on the round baler and was going to get a link for it. I looked at the chain (3/8 5/8)and it was gouged pretty good so I decided to replace it.

TSC had a 10' for $11. Great. Came home and decided to use the old one as a guide to get the right length.

I couldn't believe how much that chain had stretched and to look at it on the baler you'd never know it.

Mark

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