Ariens 1128 (924508) Bearing - Snowblower Forum : Snow Blower Forums
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post #1 of 4 Old 01-20-2020, 08:47 AM Thread Starter
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Ariens 1128 (924508) Bearing

Hi Everyone, so this weekend I had to replace the main shaft bearing leading to the auger. Disassembly was fairly easy, but removing the spindle was a nightmare. 2 different pullers, heat, cold, penetrating oil, etc. After 2 hours it finally came off. There was nothing left of the old bearing, only the inner and outer race. The issue I ran into was the woodruff key. It was "welded" to the shaft. I tried everything. Tapping it out, heat, cold, drilling it, cutting it and there was no way it was coming out, i spent almost 3 hours on it. I finally ended up grinding it flush with the shaft. To keep the hub from rotating, I counter slightly drilled the 2 set screws into the shaft (counter sunk them into the shaft as opposed to just pushing on the shaft) and locked everything in with locktight. Anyone else run into issue removing the hub or woodruff key?
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post #2 of 4 Old 01-20-2020, 09:00 AM
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Welcome to the forum!

I had a similar issue with my current (rusty) Ariens. Vise grips, diagonal cutters, a punch & hammer, etc, accomplished nothing. I finally welded a scrap piece of steel to the woodruff key, and was able to use that as a lever, to get it moving, and finally coaxed it out of the slot. But it was in there TIGHT, the first piece of steel wasn't enough leverage, I had to weld on an extension, to get a long enough lever. I liberally coated the slot, and new key, with anti-seize before reassembling it.

If I didn't have that as an option, I was thinking of using the Dremel to grind a slot down through the center of the key, on the long axis. To let the key's thickness collapse, and help release it from the slot.

Hopefully the setscrews will do it for you. There's a lot of torque going through that pulley.

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post #3 of 4 Old 01-20-2020, 09:10 AM Thread Starter
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Thanks for the tip, next time...

If it starts slipping I am going to drill thru one of the set screws (shaft is 1" diameter" and put a thru bolt.
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post #4 of 4 Old 01-20-2020, 09:31 AM
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Yup, been there, done that.
I had the same issues as you, I had to cut the flange piece off of the shaft and buy new as mine would not release, even with heat, lubricant, beating, and swearing. The key was also welded in and wound up using a cut off wheel to cut out the center enough that a punch would be able to knock it out.
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