Replacement shear bolt grade - Snowblower Forum : Snow Blower Forums
 
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Old 02-06-2015, 07:23 AM Thread Starter
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Replacement shear bolt grade

Hello all; I want to replace the shear bolts on my 1996 Murray Ultra 5hp, 22" Model # G2250-030 snowblower that was given to me. I don't know the grade bolt thats on it now, and don't want problems down the road by having the wrong shear bolt. I would like to know which grade shear bolt would be compatible to this machine. Any help would be appreciated. Thanks in advance.
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Old 02-06-2015, 08:11 AM
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there is no grade markings. on those bloody shear pins/bolts.

Long LIVE THE POWERSHIFT!! MAY IT NEVER RUST IN PEACE!!
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MAHALO!!!!!!!!!
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Old 02-06-2015, 08:54 AM
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If you have the manual is should give you the part number. Or go on a site like Jacks small engine and look it up. Any place that sells power equipment has shear bolts this time of year. You can often get shear bolts in a hardware store. If you don't know the part number bring one of the good ones with you and match up the grooves and diameter. Sometimes generic shear pins are stocked in the small draws in the fastener section in places like Ace and True Value.

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Old 02-21-2015, 02:30 PM
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I took the advise of a hardware salesman and used a soft grade bolt that they gave me... stating it was a soft Grade 5 bolt that is the same as a Murray brand sheer bolt. Well, I hit something and that very bolt did NOT break, and the bolt actually peeled the auger housing back, bending the bolt over while doing it.. and it pulled the auger out of it's housing mount bracket. This just happened and when I get time to look into it, I may be talking to the Hardware store for any liability of damage costs. I won't settle for just a "soft bolt".. I now have the actual Murray sheer bolts. Just word to the wise.. Good luck.
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Old 02-21-2015, 02:37 PM
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Normally shear bolts are Grade 2 and there is no soft grade #5 as it is either a grade #5 or not.

Snow Removal Apparatus I own:
Ariens ST1530DLE, and good ole arm powered scrapper.
The 15 HP is a new Ducar engine sold
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Old 02-21-2015, 02:37 PM
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Grade 2 is the soft ones, grade 5 is the average ones, grade 8 are the extra hard ones.

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Old 02-21-2015, 05:46 PM
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Quote:
Originally Posted by Copper116 View Post
I took the advise of a hardware salesman and used a soft grade bolt that they gave me... stating it was a soft Grade 5 bolt that is the same as a Murray brand sheer bolt. Well, I hit something and that very bolt did NOT break, and the bolt actually peeled the auger housing back, bending the bolt over while doing it.. and it pulled the auger out of it's housing mount bracket. This just happened and when I get time to look into it, I may be talking to the Hardware store for any liability of damage costs. I won't settle for just a "soft bolt".. I now have the actual Murray sheer bolts. Just word to the wise.. Good luck.
good luck sueing a hardware store because an employee sold you the wrong bolt.
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Old 02-21-2015, 05:58 PM
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Here is the part number that popped up when I searched your model number.
You also want to make sure the auger is loose . . can spin freely on the shaft when the pin is removed. If the auger is rusted to the shaft the correct shear pin isn't going to make a difference. Good place to pack in some grease !!

https://www.google.com/search?q=7030...utf-8&oe=utf-8

P/N 703063

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Make sure the windows are up before the snow plow goes by !!

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Old 04-08-2018, 08:36 PM
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I use non graded bolts for my snowbird....get your old sheer bolt and mark the areas where the bolt should sheer against the new bolt. Mark those areas where the pin sheers with a magic marker.

I then place the bolt in my drill press or lathe, and with a .020 cutter or hacksaw blade, place the blade against the bolt markings and while the bolt is spinning slowly place the blade against the marking and cut into the bolt about .030...

That is where the bolt will sheer ....where the groves are cut into the bolt.
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Old 04-08-2018, 09:09 PM
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Search for Murray part #9524, threaded shear bolt 1/4" x 1 3/4" - 20, bushing, and a special torque nut.

1986 Ariens ST522, 5hp, 22"
1995 Murray Craftsman 10hp, 29" w. 12" impeller
A 1983 Real John Deere 10hp, 32" w. 12" impeller, 16" auger, 20" high front, cast iron gear box, chains
Noma 9hp, 27" w. 12" impeller
Noma 5hp, 24" w. 12" impeller, 20" high front
Gravely Convertible, 12hp Kohler cast iron, 26" width, 600 lbs of cast iron & steel, 2 speed impeller, 4 ground speeds
Dynamark 8hp, 26", 12" impeller, for sale
Several other 5hp, 8hp, several 2 cycle, all for sale
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