impeller shaft bearing install - Snowblower Forum : Snow Blower Forums
 
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post #1 of 5 Old 10-16-2019, 04:56 PM Thread Starter
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impeller shaft bearing install

Murray Ultra 2-stage 8HP 27" G2784030, purchased 1997. The impeller shaft bearing is shot. I had a devil of a time removing it, probably because of some corrosion on the shaft? I put the nut back on the end of the shaft and a wood block on that, then gave it whacks until I worked it off. I've watched videos of impeller/auger assembly removal and they just "pull it out" from the front. Question is, how is that possible? It can't be a press-fit bearing then right? I'm assuming the shaft/bearing should be a very close fit but doesn't require a pressing tool. I believe the bearing retainer grips the outer race, and the shaft spacer exerts some pressure on the inner race?

My plan at the moment is to take some fine sandpaper to the shaft until the bearing can traverse it by hand, then do the reassemble. Sound right?
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post #2 of 5 Old 10-16-2019, 05:23 PM
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Bearing Should Slide on the Shaft. Clean the shaft with Sandpaper or a wire wheel, and use some oil.
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post #3 of 5 Old 10-16-2019, 05:29 PM
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If you got it off by hitting a piece of wood makes me think that it wasn't much of a press fit, it probably was the crud/rust that sort of held it on. Clean up the shaft, and the outer bearing holder and the new bearing should fit fine. I try to use a socket or a piece of pipe to match the inner race to "tap" it on the shaft.The outer race should slide into the recess. Always check a new ball bearing for smoothness, no sandy or lumpy feeling as you rotate it by hand.
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post #4 of 5 Old 10-16-2019, 05:30 PM
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Quote:
Originally Posted by bradholcomb View Post
Murray Ultra 2-stage 8HP 27" G2784030, purchased 1997. The impeller shaft bearing is shot. I had a devil of a time removing it, probably because of some corrosion on the shaft? I put the nut back on the end of the shaft and a wood block on that, then gave it whacks until I worked it off. I've watched videos of impeller/auger assembly removal and they just "pull it out" from the front. Question is, how is that possible? It can't be a press-fit bearing then right? I'm assuming the shaft/bearing should be a very close fit but doesn't require a pressing tool. I believe the bearing retainer grips the outer race, and the shaft spacer exerts some pressure on the inner race?

My plan at the moment is to take some fine sandpaper to the shaft until the bearing can traverse it by hand, then do the reassemble. Sound right?
Yes. Watch Donyboy73's video if you want to see a tough to remove auger. Donyboy does kick it's a$$

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post #5 of 5 Old 10-16-2019, 06:03 PM Thread Starter
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Thank you all! Gotta keep this beast running! Just like my 38 year old Kenmore washer and dryer! Thank goodness for Google, YouTube, FixItNow.com, etc.
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