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New Holland shear pins

F

Fudd

Member
I have a nice NH 269 baler and last summer on the last of the baling it sheared a couple of pins on the flywheel. The strange part is both sheared when nothing was going through the baler, it was empty going from one windrow to another. When I was finished, I was checking it over and noticed the bushing in the flywheel has play in it. I plan on changing the bushing this spring but do you think that would cause the pins to shear when empty? TIA
 
(quoted from post at 14:19:39 04/18/15) I have a nice NH 269 baler and last summer on the last of the baling it sheared a couple of pins on the flywheel. The strange part is both sheared when nothing was going through the baler, it was empty going from one windrow to another. When I was finished, I was checking it over and noticed the bushing in the flywheel has play in it. I plan on changing the bushing this spring but do you think that would cause the pins to shear when empty? TIA
Click to expand...
Yes it will, I have seen it many times.

Mark
 

They just wear and break. I used to change them periodically before they broke in the field. If they break when tying you have to retime the baler which is not my
favorite job.

KEH
 
have a 282 that used to do the same thing, still does but not as bad. Changed the flywheel bushing a couple years ago and that made a world of difference. I don't know if on the 269 there is a bushiing in theflywheel that the shear bold goes through, if so change that one also. The drive arm on mine had the hole worn a bit too but NH no longer has that part. I try to tighten the shear bolt every time I stop. If kept tight it doesn't wear out as fast.
 
No- you don"t need to re-time the baler.....shear bolt has nothing to do with timing. What others said about the worn bushing in the flywheel, and the importance of keeping the shear bolt tight is correct.
 
You may also need to shim the flywheel to reduce in and out motion on the shaft. Looseness in this direction pulls the shear pin and stretches it endways. Be sure you have help or a hoist when you so anything with the flywheel, it is heavier than a dead minister.
 
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