IH 80 snowblower shear pins

herk · Dec 28, 2022

What should I use for shear pins it has Grade 8s in it now, I was thinking they should not be grade 8s maybe 5s or even 2s. just wondering .They are in the first u joint on the blower. Thanks Bryan

Janicholson · Dec 28, 2022

If on smooth shafts, and for certain a shear pin, grade 5 is where you might end up, but start with no mark hardware bolts and see if they shear. If not leave it. Grade 8 will tear things up. !!! Jim

J Hamilton · Dec 28, 2022

I have always used grade 5 for sheer pins

Donald in MN · Dec 28, 2022

case ih online parts book calls for a grade 5 bolt

NY 986 · Dec 29, 2022

Online parts catalog shows grade 5. I bought a couple to have for mine which I purchased this past December.

M Nut · Dec 29, 2022

I use grade 5 in my Farm King snowblower.

560Dennis · Dec 29, 2022

I make sure the the auger is greased and turns on the in power output shaft.
As far the bolts I use grade 3 (a36)that my hardware store sells in bulk.
I then make the bolts to the location of shear ,I use a hack saw and cut bolts in two places opposite ,I cut halfway in to make sure it shears where it supposed to.
I make two sets of spares.
Having had to straighten the impellers before on machines I got because they tried to take in rocks the you wants it to shear bolts for sure.

495man · Dec 29, 2022

Grade 5.

I had a 70, never broke the main PTO shear pin, the auger shear pin many times.

IH 80 snowblower shear pins

herk

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Janicholson

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J Hamilton

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Donald in MN

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NY 986

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M Nut

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560Dennis

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495man

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