Redisbest 22 #1 Posted January 10, 2017 (edited) OK.....Just purchased a 2 stage WH Snowblower....Got owners manual and parts manual....And nowhere does it show or mention shear pins to protect gearbox ect....Wth....I would assume( they are usually on auger shaft/ auger).But this has 2 bolts and woodruff key per side....Don't appear to be a very good fail safe shear safety point...Am I missing something ? Edited January 10, 2017 by Redisbest Spelling error Share this post Link to post Share on other sites
WVHillbilly520H 10,373 #2 Posted January 10, 2017 The bolts on the auger ARE shear bolts, take one completely out the auger will free spin on the drive shaft, the classic and xi 2 stage are the same except for the tractor mount and PTO drive,Jeff. 1 Share this post Link to post Share on other sites
Redisbest 22 #3 Posted January 12, 2017 On 1/10/2017 at 5:02 AM, WVHillbilly520H said: The bolts on the auger ARE shear bolts, take one completely out the auger will free spin on the drive shaft, the classic and xi 2 stage are the same except for the tractor mount and PTO drive,Jeff. Thanp On 1/10/2017 at 5:02 AM, WVHillbilly520H said: The bolts on the auger ARE shear bolts, take one completely out the auger will free spin on the drive shaft, the classic and xi 2 stage are the same except for the tractor mount and PTO drive,Jeff. Thanks Jeff....If you take out one bolt and it turns...Why is there 2 bolts on each side ? 1 Share this post Link to post Share on other sites
WVHillbilly520H 10,373 #4 Posted January 12, 2017 Sorry I meant take both bolts out of ONE side and that auger should free spin on drive shaft, also those shear bolts are available at TSC 5/16" x 3" (3 pack), and I did get your close up pics and dimensions for the xi snow plow/sway bar,Jeff. Share this post Link to post Share on other sites
Redisbest 22 #5 Posted January 12, 2017 Thanks Jeff, if you take out one bolt and it turns....Why is there 2 bolts on each auger ? Share this post Link to post Share on other sites
ti-jean 44 #6 Posted January 23, 2017 Hi in the operator manual they talk about chire bolt its onely bolt ???... it chould be chire bolt I dont find the toro parts number .one on my snow-thrower is broken thanks Share this post Link to post Share on other sites
WVHillbilly520H 10,373 #7 Posted January 23, 2017 @ti-jean, here in the U.S. it's a "shear" bolt because it's a low grade of steel that in theory should snap break or shear off before what it's fastened to gets ruined, size in SAE is 5/16"-18tpi x 3" long,Jeff. 1 Share this post Link to post Share on other sites
ti-jean 44 #8 Posted January 24, 2017 1 hour ago, WVHillbilly520H said: @ti-jean, here in the U.S. it's a "shear" bolt because it's a low grade of steel that in theory should snap break or shear off before what it's fastened to gets ruined, size in SAE is 5/16"-18tpi x 3" long,Jeff. Ok but that bolt it is not a grade bolt SAE is 5/16"-18tpi x 3" long so here to we need shear bolt never know what could be drop in my driveway . thanks Share this post Link to post Share on other sites
gwest_ca-(File Mod) 11,032 #9 Posted January 24, 2017 Do you have one of these? https://www.partstree.com/parts/search/models/?searchTerm=79361 Bolt shown on the auger page https://www.partstree.com/parts/toro/snow-blowers-snow-throwers/79361-toro-44-two-stage-snowthrower-for-300-series-garden-tractors-sn-3900001-3999999-1993/auger-assembly/ I would start with a Grade 2 bolt which has no marks on the head. If they shear too easy try a Grade 5 with 3 marks on the head. Garry Share this post Link to post Share on other sites
shallowwatersailor 3,213 #10 Posted January 24, 2017 (edited) Shear bolts sometimes have a groove in them to make it easier to let go and break. If you are using just a regular bolt, it might be a good idea to cut a groove in the bolt the width of the shaft. Here is a thread that I started a few years ago on shear pins from my Ariens walk behind. You can see the groove. Edited January 24, 2017 by shallowwatersailor 1 Share this post Link to post Share on other sites
