smoothnu
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What size is the 5 tons shear pin?
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Does this help?What size is the 5 tons shear pin?
All the farm equipment shear pins I've ever seen were steel. I would think you could be in trouble using a steel shear pin.We too here in Virginia have the same affections for our winched trucks! Recently, I had installed a 10k on my 88' M35A2C from a '71. My cousins and I learned that we could recover timber that had been blown over utilizing the winch and block from the road. Sheare pins are 5/16" in diameter and roughly 2.5 " in length. After pulling a dozen or so out of the woods to the road, the winch stopped working and we soon realized what had occurred. A trip to Southern States for a PTO Shear pin was our original idea but never got passsed the frequented NAPA store. In farming country, bush hogs and farm equipment are in need of replacement pins often. Try stopping by Tractor Supply or Southern States the next time you see one and see the parts manager. I looked at SaturnSurplus.com and had a bit of trouble trying to find the pins. Turns out that there is no stock number listed (last time I looked).
Sorry no pictures at this point on the "winch over". But man am I jacked to finally have on one on my duece!
I'v used them in my farm equiptment and I believe they are something less than a grade five bolt, but the ease of getting them makes them attractive. I think if you can pull in a straight dirrection you will be ok, they shouldl shear after an aluminum, but before a grade five.All the farm equipment shear pins I've ever seen were steel. I would think you could be in trouble using a steel shear pin.
The factory pins are 9/32" in dia. also. I think you may be ok using a 5/16 aluminum pin but not a steel one.
NEVER EVER use an ag shear pin, I can say from experiance they will not break before the winch / PTO does. That is a problem I have here with fire departments, they break the pin and then use a bolt or a steel shear pin, then they're calling me because they now broke something, after which I remove the offending broken component (and all the other parts) and they get the truck back winchless.All the farm equipment shear pins I've ever seen were steel. I would think you could be in trouble using a steel shear pin.
The factory pins are 9/32" in dia. also. I think you may be ok using a 5/16 aluminum pin but not a steel one.
PTO winches are rated pretty close to accual line pull. Most electric winches use some sort of formula to rate their winches that takes into account for rolling loads ( which is wrong IMO). Bottom line is you can take a 12,000lb electric winch and a 8,000lb PTO winch will outpull it.Second: why on earth is it rated at 10K? Good lawrd, the wee electric winch on my Jeep is rated at 8K. Does the pin shear at 10K? Is that the idea?
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I have also seen the PTO ripped off the side of the trans.
If you want to take the chance of destoying your winch go ahead and use a steel pin. I know it seems the AL pin is too soft and there could be another material that would give better performance but steel is not the answer.
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