Pressing impeller off shaft - Snowblower Forum : Snow Blower Forums
 
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post #1 of 8 Old 08-25-2015, 10:04 PM Thread Starter
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Pressing impeller off shaft

Anyone have any luck pressing an impeller off the shaft? Could not find any info on the best way to do this without compromising the impeller. Already tryed heating it up. Any info would help.
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post #2 of 8 Old 08-25-2015, 10:21 PM
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I got one off from a 70's Ariens by taking 2 pieces of 2x4 and cutting a slit in the ends. I took those slits and slid them over the impeller blades and then took a sledge hammer and pounded the shaft from behind. It worked, but it did bend the impeller a bit. Maybe 4 pieces of 2x4 would bend the impeller less?

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post #3 of 8 Old 08-26-2015, 05:41 AM
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You have a air punch set up????????????

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post #4 of 8 Old 08-26-2015, 06:19 AM Thread Starter
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Not sure why I would need an air punch set up. No I do not have one. I have a shop press.
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post #5 of 8 Old 08-27-2015, 06:58 AM
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Pictures of what you're dealing with wound definitely help.

I assume by a shop press you mean a hydraulic press and the space in the frame under the ram is the problem. If that's correct, stop by your scrap metal dealer and pick up a couple of pieces of channel iron (or comparable). Remove the frame that holds the dies under the ram and substitute that channel iron. Use a couple of large C-clamps to hold the channel on the frame, use the same pins that holds that frame together.

Here's a picture of one setup I used before, may give you some ideas. I used some square iron I had on hand, use what you can find that won't bend:
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post #6 of 8 Old 08-27-2015, 05:50 PM
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There is always rust-trolysis. It may be time consuming, but it works and it can be done one side per night in a five gallon bucket.


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MTD....2 stage(modern 8.5 HP) not my favorite
Honda HS622 TA-B - acquired at an auction- nice machine for it's size.
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Yamaha YS 240 TB "Ricky" latest Craigslist find- on the bench now.

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post #7 of 8 Old 08-28-2015, 10:53 PM
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The 20-40 ton hydraulic shop press is usually the ticket. Feasibility depends on the designs of everything involved. You need to get it into the press and then devise sturdy steel cribbing to support the center hub. Don't even think of pressing against the sheet steel fabrications. In some cases you may not have lines of sight to do so.

In some cases all I can hope to do is get an old impeller off and end up dissecting with a grinding wheel (good reason to buy a plasma cutter) so I can work with just the hub. If reuse of the impeller is your plan you don't have that luxury.

Be sure everything is true of the shaft may fold over before anything moves.

Prior penetrating oil and heat while pressing never hurt.

You will probably have a key exiting as you press the shaft through, be sure it has a clear path.

If it's not going well go take a break, remember to do no harm.
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post #8 of 8 Old 08-29-2015, 09:10 AM
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You can tap with a small ball peen hammer the tube center or the auger lightly, multiple times all around as much as you can. As this will ever so little, but most certainly expand the tube. I have used this procedure many times on ll kinds of things, and usually successfully.
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