54” Snowblower Shear Pin Location?
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    t2timmy's Avatar
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    54” Snowblower Shear Pin Location?

    Anyone know if a new snowblower would come with extra shear pins on them somewhere? I thought I read on the forum one time that there was? Tried to do a quick search and couldnt find anything. Was hopin for a quick answer here. But i guess i can check the manual. Wanted to know bfore I start removing the covers.


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    martincom's Avatar
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    They are not a pin, but rather a 1/4" bolt. The blowers come with a row of spares bolted into the rear of the main housing, just below the chute.
    jgayman likes this.
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    t2timmy's Avatar
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    Thanks!! Im assuming thats what these are?



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    correct
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    Quote Originally Posted by t2timmy View Post
    Anyone know if a new snowblower would come with extra shear pins on them somewhere? I thought I read on the forum one time that there was? Tried to do a quick search and couldnt find anything. Was hopin for a quick answer here. But i guess i can check the manual. Wanted to know bfore I start removing the covers.


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    Make sure if you ever shear a pin, which does happen, that you only replace it with a comparable "Soft" bolt of the same length, material grade and hardness. Also, never substitute any other type of item such as a clevis pin, etc. for the shear pin as the material grade may be very different and the pin won't break when needed to prevent further damage.

    The head of the shear pin bolt indicates it's hardness and shear pins are usually at the soft end of the spectrum so they can break when under excessive loads. When replacing them, make sure to keep the replacements equally soft to preserve the machine through these events.

    The shear pins serve a very important function and shearing them prevents serious damage to other more expensive and robust components. Breaking shear pins can occur more often in conditions of ice or when the snow has thawed and refroze or when there is ice involved in the storm. Rarely will just heavy volumes of snow break a shear pin.

    I can't tell you how many times I have heard people who have broken more than one shear pin say "I need to find better shear pins", which are often nothing more than non hardened bolts, typically 1/4 inch. This is a terrible idea. The shear pins serve a critical function and you may experience conditions where you might shear pins seemingly often, but those conditions tend to come and go and it's not the norm to break these often.

    Last winter, I had a piece of ice that made it past the main auger on the 47" blower, did not break any shear pins and damaged the main impeller, which on the 47" two stage blower is made of heavy steel. The ice actually bent the flange on one of the impeller's auger out of position by over 1", effectively taking the pitch out of it and straightening it. I had to take the impeller out of the blower and heat the bent vane red hot with a cutting torch to be able to re-position it to restore balance to the impeller, otherwise, the machine would shake violently when running. So damage can still occur to blower components when the shear bolts don't break.
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    t2timmy's Avatar
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    Got it! Thanks everyone!


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    Quote Originally Posted by SulleyBear View Post
    Make sure if you ever shear a pin, which does happen, that you only replace it with a comparable "Soft" bolt of the same length, material grade and hardness. Also, never substitute any other type of item such as a clevis pin, etc. for the shear pin as the material grade may be very different and the pin won't break when needed to prevent further damage.

    The head of the shear pin bolt indicates it's hardness and shear pins are usually at the soft end of the spectrum so they can break when under excessive loads. When replacing them, make sure to keep the replacements equally soft to preserve the machine through these events.

    The shear pins serve a very important function and shearing them prevents serious damage to other more expensive and robust components. Breaking shear pins can occur more often in conditions of ice or when the snow has thawed and refroze or when there is ice involved in the storm. Rarely will just heavy volumes of snow break a shear pin.

    I can't tell you how many times I have heard people who have broken more than one shear pin say "I need to find better shear pins", which are often nothing more than non hardened bolts, typically 1/4 inch. This is a terrible idea. The shear pins serve a critical function and you may experience conditions where you might shear pins seemingly often, but those conditions tend to come and go and it's not the norm to break these often.

    Last winter, I had a piece of ice that made it past the main auger on the 47" blower, did not break any shear pins and damaged the main impeller, which on the 47" two stage blower is made of heavy steel. The ice actually bent the flange on one of the impeller's auger out of position by over 1", effectively taking the pitch out of it and straightening it. I had to take the impeller out of the blower and heat the bent vane red hot with a cutting torch to be able to re-position it to restore balance to the impeller, otherwise, the machine would shake violently when running. So damage can still occur to blower components when the shear bolts don't break.
    The second stage impellers are now plastic.
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    Quote Originally Posted by martincom View Post
    The second stage impellers are now plastic.
    You can replace the plastic... err... um... I mean "poly" impeller with a steel impeller for ~$250.
    2012 2720 -- 200CX Loader -- 54" Quick Attach Snow Blower -- Frontier LR5060 Rake -- Land Pride RB1660 Blade (Hydraulic Angle) -- Artillian 42" Forks -- Ken's Bolt on Grab Hooks -- Fit Rite Hydraulic top-link -- 2013 X500 for mowing duties

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    martincom's Avatar
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    Quote Originally Posted by jgayman View Post
    You can replace the plastic... err... um... I mean "poly" impeller with a steel impeller for ~$250.
    Hopefully, I'll never find out. Hind sight being 20-20, I should have kept my 46 Snow Throwers and changed out the upstop, driveshaft. and added line extenders. I like the way it operated better than the 47. Less moving parts to fail, as well.
    2017 1025R TLB & 2017 1025R FEL
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    Land Pride LR1560 Land Rake w/ wide gauge wheels & plow blade
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    my 54" blower has a plastic impeller probably made from recycled hair brushes, gives me that warm and fuzzy feeling whenever it spits out an ice chunk, bought in 2015. Yes, always replace a broken shear bolt with the correct one, or you can kiss your gearbox goodbye
    Last edited by AJgrn78; 03-08-2018 at 10:08 PM.
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