I saw a few posts somewhat related to this issue from two years ago, but they did not have enough information for my issue. Yesterday I was blowing 6" of fairly heavy snow and the blower was working perfectly. I stopped for 15 minutes (I may not have cleared all of the snow from the auger) and when I started a squealing sound appeared from the blower. I disengaged and tried again a couple times with no change. I push ahead for a short distance and the blower output went down fairly rapidly to nothing. I cleared the unit and ran the blower empty and it was still spinning but the noise continued. I took off the blower and checked the input shaft which was fine, but when I removed the cover over the large sprocket, the sprocket was not spinning with the shaft anymore. Here is where I am stuck. When I looked at the parts diagram, the sprocket configuration was different. In fact, I saw three different possible configurations to hold on the sprocket. Mine does not have set screws in the sprocket, as it has a 4-threaded-hole plate with two of the opposite holes occupied by bolts with a shaft key in one of the grooves on the shaft. I don't know the best way to get the sprocket off without causing damage. I am thinking that the other two holes may be to thread bolts into to pull off that cover. I am not a mechanic and I am not sure how to get the key off the shaft, or if I should turn the existing bolts one way or another first. Sorry, this got pretty wordy. I appreciate any advice on my situation... there is more snow on the way. Thanks.
B2782B Snow Blower shaft and sprocket.
- Thread starter sbtills
- Start date
North Idaho Wolfman
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Pictures of what your dealing with would be much easier to understand.
Is this what your talking about?
Is this what your talking about?
Whenever you hear squealing, it is best to stop and determine the problem before you cause more damage. You might also need a new chain.
I can't find a parts diagram that reflects the configuration of the hub that I have. The technique that you provided for tightening the hub over the sprocket (thank you) makes sense with three triangular oriented bolts, but I don't know if that is appropriate for 2 bolts.
Russell King
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Look up taper lock sprockets. I believe you need to remove the two bolts and use them as jack screws in the other two holes. You will be pushing a tapered part off of a tapered part.
I think the two open holes will be threaded holes and the two with bolts will be clearance holes, but I might have that backwards. It has been some time since I used one of those things.
I think the two open holes will be threaded holes and the two with bolts will be clearance holes, but I might have that backwards. It has been some time since I used one of those things.
All the QD bushings I've dealt with had 3+3 holes and the split went full length, including the flange. Maybe this one is a modified form.
I think you are correct about that. I have deduced that I have an old configuration with the two bolts that has been replaced with the new 3 bolt hub. I just called Messick's and they have a kit that replaces the sprocket, provides a 3 bolt hub, and 3 bolts. I appreciate the tip about how to get the old hub off. I just have to learn how to remove the key way. Thanks!