What Shear Pins? Found bolts in my hand me down. - Snowblower Forum : Snow Blower Forums
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post #1 of 16 Old 09-09-2018, 08:34 PM Thread Starter
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What Shear Pins? Found bolts in my hand me down.

Received a hand me down non running snow blower from the father in law for free. Craftsman C950-52677-9 8/25. I have pretty much no experience working on small engines. I followed some donyboy videos and read some forum posts here. I now have a running machine! Just cleaned the carb, changed gas lines, and lubed the throttle/governor.

I realized there are bolts in the auger mechanism where shear bolts should be. The O.D. of the auger shaft is 1 1/4" and the bolt that was in there measured 1/4" in diameter. Can I just buy any shear pins that will fit those measurements? I live in Canada for those wondering.

Thanks,

Travis
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post #2 of 16 Old 09-09-2018, 09:32 PM
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Go to Canadian Tire or TSC and get the right length. The shaft the the auger rides its diameter and the diameter of the auger determines the length. The shear pin has two grooves that are thinner than the rest of the pin. You want these grooves lined up where the auger rides on the shaft. So if you hit something hard or frozen, the pine "Shears" there saving the gear box.
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post #3 of 16 Old 09-09-2018, 09:35 PM
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Check the holes on the auger, if both sides are 1/4" part # 532005; if one hole is a 1/4" and the other side is larger part # 500026, 1501216, 8938, 9524. The one side is larger because it fits a bushing that comes with the shear pin.

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post #4 of 16 Old 09-09-2018, 10:35 PM
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does sears sell the shear pins?

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post #5 of 16 Old 09-09-2018, 10:52 PM
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Since Sears Canada folded their tents about a year or so ago there is no parts support anymore.

I found shear bolts for a similar Craftsman blower at Canadian Tire, in MTD packaging. They had the aluminum collars that fit the larger hole in one side of the auger.

Grease the auger shafts through the grease nipples. You should grease the auger with the shear bolts removed, and after you get the grease in, rotate the augers to spread the grease around between the auger and the internal drive shafts. So not want to tighten the nuts on the shear bolts too much. They come with locking nuts that keep them from vibrating loose. You just want to snug them up so that the bolts can just be turned by hand. Grease the shear bolts before installing them. Check them every year before the season starts and replace any bent ones. They do get bent sometimes from smaller impacts.

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post #6 of 16 Old 09-09-2018, 11:14 PM Thread Starter
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Quote:
Originally Posted by JLawrence08648 View Post
Check the holes on the auger, if both sides are 1/4" part # 532005; if one hole is a 1/4" and the other side is larger part # 500026, 1501216, 8938, 9524. The one side is larger because it fits a bushing that comes with the shear pin.
Yes the one side is larger than the other. Thanks so much for the part numbers!

Sask, Canada
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post #7 of 16 Old 09-09-2018, 11:16 PM Thread Starter
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Originally Posted by skutflut View Post
Since Sears Canada folded their tents about a year or so ago there is no parts support anymore.

I found shear bolts for a similar Craftsman blower at Canadian Tire, in MTD packaging. They had the aluminum collars that fit the larger hole in one side of the auger.

Grease the auger shafts through the grease nipples. You should grease the auger with the shear bolts removed, and after you get the grease in, rotate the augers to spread the grease around between the auger and the internal drive shafts. So not want to tighten the nuts on the shear bolts too much. They come with locking nuts that keep them from vibrating loose. You just want to snug them up so that the bolts can just be turned by hand. Grease the shear bolts before installing them. Check them every year before the season starts and replace any bent ones. They do get bent sometimes from smaller impacts.
Thanks for all the information, I'll be heading to Canadian tire tomorrow to see what I can find. Also to get a grease gun. There's still so much to check over on this machine before winter comes!

Sask, Canada
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post #8 of 16 Old 09-09-2018, 11:17 PM Thread Starter
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Originally Posted by orangputeh View Post
does sears sell the shear pins?
Sears Canada closed up shop not to long ago unfortunately.

Sask, Canada
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post #9 of 16 Old 09-09-2018, 11:18 PM Thread Starter
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Originally Posted by gregg View Post
Go to Canadian Tire or TSC and get the right length. The shaft the the auger rides its diameter and the diameter of the auger determines the length. The shear pin has two grooves that are thinner than the rest of the pin. You want these grooves lined up where the auger rides on the shaft. So if you hit something hard or frozen, the pine "Shears" there saving the gear box.
Thanks, I'll be heading out tomorrow to see what I can find. I live on a small city of 11,000 people so the selection is limited.

Sask, Canada
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post #10 of 16 Old 09-09-2018, 11:42 PM
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Quote:
Originally Posted by Paxonator View Post
Thanks, I'll be heading out tomorrow to see what I can find. I live on a small city of 11,000 people so the selection is limited.
well, the internet has everything. i hardly ever buy anything local. ebay , amz, google.......

ya , I know, shop local , and support local businesses. I would if their prices were competitive.

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