Snowblower Forum banner

1 - 20 of 34 Posts

·
Registered
Joined
·
79 Posts
Discussion Starter #1
Hi. I'm working on an Ariens snowblower 920402-167123

It came to me from a neighbor with drive issues and I quickly diagnosed as a bad friction disc. One side of it is missing all of the rubber. There was a mouse nest in there and since the machine is not that old and the rest of the wheel is in good condition, I'm assuming they ate it.

The problem I'm having is with the bearings on the ends of the hex shaft. I believe the one on the pinion side needs to be removed in order to slide the hex shaft out and remove the friction disc.

But that thing is rusted onto the end of the shaft pretty good. I can't work it loose but twisting back and forth because the bearing just spins, like it's supposed to. I tried banging the shaft a bit with a hammer and block of wood to coax it out but it just won't budge. I don't think I can heat it as there is a rubber seal.

here's a link to the diagram
https://www.jackssmallengines.com/jacks-parts-lookup/manufacturer/ariens/sno-thros-and-brushes/920-series-sno-thro/920402-123000-174999-sno-tek-24-e/friction-drive

Any help is appreciated. I don't have a problem with replacing the bearing if necessary but was trying to avoid it. Either way, it has to come off right?

Thanks very much
 

·
Registered
Joined
·
994 Posts
On my machine the bearing is in a flange so lubricate the outside of flange where it fits into the frame and use a big hammer (and a brass drift) to shock the other end of the hex shaft. Mine came loose easily.
 

·
Registered
Joined
·
79 Posts
Discussion Starter #3
So I tried that but it didn't budge. However, I may not be hitting it hard enough. I'm kind of scared to hit it too hard. How hard can I hit it? As hard as I can?
 

·
Registered
Joined
·
79 Posts
Discussion Starter #5
The very same. I hit it with PB yesterday and let it sit over night. I sprayed it again today. I had originally removed both bearing flanges but reinstalled the right one as to keep the bearing centered for even distribution of force. I'm hitting the shaft on the right side with the left bearing flange off to allow it to move in that direction once broken loose. Am I on track?
 

·
Registered
Joined
·
994 Posts
The very same. I hit it with PB yesterday and let it sit over night. I sprayed it again today. I had originally removed both bearing flanges but reinstalled the right one as to keep the bearing centered for even distribution of force. I'm hitting the shaft on the right side with the left bearing flange off to allow it to move in that direction once broken loose. Am I on track?
If both bearing flanges are removed then you have failed to remove something else and probably doing damage the more you hit the hex shaft. Did you remove the wire in the hex shaft to limit high gear and reverse gear?
 

·
Registered
Joined
·
79 Posts
Discussion Starter #7
Do you mean the clips on either side of the shaft that limit the disc from sliding too far? They look like modified cotter pins that pass through a small hole in the hex shaft. I did remove those. As far as I can see, the only thing preventing the shaft from sliding in either direction right now are the bearings on either end. With the flanges off, I can wobble the shaft, pulling the pinion gear away from the larger gear. So there is movement in the shaft back and forth but not left and right. But it has not budged at all from left to right.

Before tackling the job, I watched a video showing how to perform the task with the very same design. When the person removed the bearing flanges, the bearings slipped right off and stayed in the flanges. Once removed, the shaft just freely flopped around and pulled out the left side. And then the pinion gear slid right off the shoulder of the shaft on the right side, which is splined.
 

·
Registered
Joined
·
79 Posts
Discussion Starter #9
It would fit over that but the problem is that the bearing will not pass into the housing body of the machine. The hole that the shaft passes through on the housing is smaller than the bearing, for obvious reasons. And it's the right side that has to come off because the gear is on the inside right, which would prevent the shaft from sliding to the right.
 

·
Retired Moderator
Joined
·
9,900 Posts
When you get a chance it would be helpful if you went into your "User CP" and added a location.

Do you have room to get a small bearing puller on it ?? Oreilly and Autozone have loaner tools if you don't have one.
 

·
Registered
Joined
·
79 Posts
Discussion Starter #11
I'm in MA. I do have bearing pullers but the back side of the bearing sits flush against the housing so I can't get a bite on it with a puller.

Pic below

 

·
Retired Moderator
Joined
·
9,900 Posts
That's just ugly. :facepalm_zpsdj194qh Other than jamming a couple of screwdrivers behind the bearing against the body to take up the slack and rapping on the shaft at some point you might have to cook the bearing.
Hopefully someone comes along with a better idea but at some point that $15 bearing just isn't worth all the effort.
 

·
Registered
Joined
·
79 Posts
Discussion Starter #13
Right. I saw a price of just under $13 with $7 shipping. Made me want to grab my dremel and cut it right off. But I want to make sure I've exhausted my options.
 

·
Registered
Joined
·
79 Posts
Discussion Starter #14
Other than jamming a couple of screwdrivers behind the bearing against the body to take up the slack and rapping on the shaft at some point you might have to cook the bearing.
Actually, you just made a good point. There's no slack behind it but I bet that thin sheet metal is giving and screwing up my force differential.
 

·
Registered
Joined
·
117 Posts
Socket right sized to hit inner bearing race but not the shaft, then punch the shaft itself to start working it back and forth? Brush any rust out too as you go.
 

·
Registered
Joined
·
79 Posts
Discussion Starter #17
Good news

I saw that the shaft was only $20. So I shed my fear, closed my eyes (which I know wasn't very bright), and gave it 2 good wacks with the drift and a small sledge...bingo.

The problem was simply and inadequately sized set of walnuts.

Thanks to everyone for helping to guide me down the path.
 

·
Registered
Joined
·
79 Posts
Discussion Starter #20
:icon-dancingparty: Life is good !!
Indeed.

This a wild one. I obviously tipped this machine up in order to get the belly pan off and work on the drive system. During my escapade, I found a 3/4 inch hex bolt on my garage floor. I was puzzled but since I kept good track of the parts, I figured it was just one of those pieces of hardware you find on your garage floor once in a while.

After finishing the friction disc job I decided to check the belts and noticed the auger pulley sliding freely up and down the impeller shaft. Guess what's missing from the end of the impeller shaft?
 
1 - 20 of 34 Posts
Top