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Discussion Starter #1
As I once heard : no good deed goes unpunished.

Yesterday I was helping out my neighbor who's husband is on training in a remote city. She hurt her shoulder shoveling and asked for my help to clear her driveway. We received 8" of heavy, wet snow.

While I was blowing the snow at full throttle in front of their garage door, a very loud "CLUNK" noise and all comes to a stop : auger, impeller and the engine shut off. I backed up the machine and saw what looks like a trailer axle without wheels previously hidden by the snow. The thing was close to the ground, so it was picked up by the auger blade, then the auger threw it in the impeller where it locked everything.

I gave up clearing this space, restarted the machine and finished the rest of the driveway. There didn't seem to be any visible damage and it seems to still work well. Locking up an engine that hard and suddenly is probably quite dangerous for the survival of said engine. Could there be any damage that is not obviously noticeable but will hit me later ?
 

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Are your augers free on their shafts ?? Have you pulled the shear pins this season and rotated them ?? The shear pins should have busted. Depending on the impeller it usually has something like a roll pin or shear pin that should let go too.
It's always best if the belt slips and starts screaming but since the engine started back up you likely got lucky. I would sure inspect the augers and impeller for bent blades and the housing to see if it's out of square. Check the clearance at the end of the augers to the housing to see if each side is similar to the other.


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I think you got lucky, that would normally have taken out the auger gears if the shear pins didn't break. Toro claims it ain't no big deal if it kills the motor. :)
 

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man.......shear pins should have broke.

i would do what frog said. replace shears. then put a clamp on auger handle or else have someon keep it down so you can watch operation and see if anything is out of whack.

if not , lucky but i would be very surprised.

what make blower?
 

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Long term, you probably did some damage at some level. But for now, just run it and try to forget about it. Tks for your helpfullness
 

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I feel for you. Hopefully it will all be ok.
 

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Check to make sure there are shear pins in there and not bolts!
 

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Discussion Starter #9
I suspect the shear bolts may in fact be regular bolts. I'll procure new shear bolts and replace these just in case.

Tonight I ran the augers with the handle taped down and checked with a flashlight. Everything seems to run straight. Amazing. I don't notice any dent at the moment.
 

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Lucky guy! Especially if they ARE standard bolts! I've broken shear bolts even when I can't identify anything weird that I hit. Sucking in a piece of metal big enough to also stop the engine? Yikes.
 

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Aside from damage to the auger and impeller (which probably would be pretty obvious), I'd be most concerned about the gearbox and about possible crankshaft runout.

On the positive side, even though they didn't squeal, it's possible that the belts, pulleys, and friction ring absorbed enough energy to prevent any engine damage from the sudden stop. I'd be more worried on a direct-drive system like a lawnmower.

Richard
 
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