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I've managed to buy two snowblowers with opposite problems....
One with a good hsk70 engine but the worm gear in anger is shot and the other with a dud engine but everything else (after tinkering) works great.

Did an engine swap and in worked great. Now have an operational ariens 24inch 7hp snowblower.

Question: is it worth the effort/possible to install the working gear into the none working auger?

They are but Arien sho thro units but one is 32 inch and other Is 24 inch

I ask as non working is 32inch and would be nicer to have a working 32inch 7hp snowblower....
 

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I don't know if I'd go out of my way to get a 32 inch machine running with a 7HP engine, it will be sorely under powered.

With a little patience you can probably get a whole donor machine with a good worm drive for what the part alone will cost new.

Pete
 

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Discussion Starter #3
Good point about being underpowered.
I'll keep a look out.

Was more interested in if it was possible?
 

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It's hard to give a definitive answer without knowing the 6-digit model number of the machine.

The answer is most likely "yes", but you'll need the right donor machine. If the donor is of about the same age as your machine and the gearbox looks the same, it'll probably work.
 

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Was more interested in if it was possible?
Quite likely! I can speak mainly for Gilson but I'm sure most companies are the same. Once they have a design they will run with it for a while so commonality of parts is likely.

For about 10 years the full sized Gilson snowblowers used a cast iron worm drive case. In the mid 70's they went to die cast aluminum but kept ALL of the same internal parts, just a different package. Highly interchangeable from 1966 - 1988!
 

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I don't think a 7HP machine would be underpowered at all? Tons of them with 5HP and do just fine. If it's a common enough machine you can usually find parts on ebay without much trouble or expense. (Or find another broke/dead one). It's just a matter of what value you are looking to get out of it. Is it one for you to keep - or just sell? Me personally, if it's for one I plan to keep, I don't worry as much about cost. If I plan to flip it, then I decide if it's worth it - or just part it out. More often than not, the parts are worth more than the whole. That's why I have a nice scrap pile I take in every so often when steel prices go up......
 

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It's a bit like stray critters - as much as you want, you can't save 'em all! LOL I'm sitting on a glut of blowers right now and nobody's to interested when the weather has been above 40 for 2.5 months!
 

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Are both gearcases the cast iron/helicon style? Then the gear should transfer over fine. Some of the very old Ariens machines had a 3/4" auger shaft, while that 32" must be 1". That would be easy enough to see though...
 
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