Auger Pulley Movement - Snowblower Forum : Snow Blower Forums
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post #1 of 28 Old 03-04-2015, 09:26 PM Thread Starter
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Auger Pulley Movement

Hey guys, recently purchased a 24" craftsman 205cc briggs 2 stage blower (model is c950-52946-0).

My auger belt keeps slipping off the auger pulley. This happens even when I am not actually blowing snow. When I pulled the pulley cover and watch the pulley and belt with the auger engaged, the auger pulley actually moves back and forth on the shaft as it spins and even contacts a metal spring nearby (causing sparks to fly). There are two set screws on the pulley which secure it to the shaft, they are tight. Anything else I can check?

Any help would be appreciated.
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post #2 of 28 Old 03-04-2015, 09:39 PM
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your impeller bushing/bearing is bad. pull off the bucket, remove the pulley(thats the fun part where you get to get the pb blaster and rip out the torch, and fight with it for hours), and replace the bearing. the hardest part will probably be removing the pulley, but the rest is pretty simple. use anti seize when your ready to reassemble
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post #3 of 28 Old 03-04-2015, 10:04 PM Thread Starter
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Thanks for the quick reply! Would that be item 491 on the attached diagram?
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post #4 of 28 Old 03-04-2015, 10:19 PM
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yup, thats the part you need
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post #5 of 28 Old 03-05-2015, 06:59 PM Thread Starter
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So I got out to the machine today to have a look. When I grab the shaft at the impeller end, it feels solid with pretty much no play. Is there any other way to check that it is the impeller bearing without pulling apart the machine? It really looks to me like the pulley itself is going back and forth along the shaft (towards the auger then towards the engine about a 1/2 inch of movement at a set frequency)... But that isn't possible if the set screws are tight? And I guess the entire shaft could be moving back and forth?

Thanks again.
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post #6 of 28 Old 03-05-2015, 08:42 PM
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Perhaps the set screws are frozen in position and not tight at all on the shaft.

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post #7 of 28 Old 03-05-2015, 08:45 PM
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As Zavie said, I'd check the setscrews further.

If the entire shaft is moving, the impeller would move with it - that should be pretty easy to check.

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post #8 of 28 Old 03-05-2015, 09:57 PM
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Video would be great but photos with it pushed forward and then backward would give us an idea of what you're seeing and a better grip on how to advise.

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

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post #9 of 28 Old 03-05-2015, 10:02 PM Thread Starter
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I just went out to have a look and it is definitely the shaft moving in and out and not the pulley sliding around. The entire assembly can be seen at the gearbox moving in and out about 1 inch of travel, translating all the way back to the pulley. I can get a video in daylight tomorrow. Problem with bushing in gearbox or impeller?
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post #10 of 28 Old 03-06-2015, 08:10 PM Thread Starter
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Here is a link to a video of what I have been describing. Thanks for letting me know what you guys think.

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