As Always I Don't GET IT. - Snowblower Forum : Snow Blower Forums
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post #1 of 18 Old 01-01-2016, 06:36 PM Thread Starter
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Angry As Always I Don't GET IT.

Can some one here enlighten me on this 1. I was perusing some threads here. and noticed that there is a bracket that holds up the gearbox to the top of the bucket. the old school snowblowers don't have it.

Long LIVE THE POWERSHIFT!! MAY IT NEVER RUST IN PEACE!!
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MAHALO!!!!!!!!!
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post #2 of 18 Old 01-01-2016, 06:42 PM
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It's progress. My 928 tcd has that bracket, a 828 honda that I work on doesn't. The impeller bearing wore out on the 828, my 928 is still solid. Hopefully this helps.

HS 928 TCD. It's Canadian eh! (Sure I'm done modifying it, for now, until next time.......)
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post #3 of 18 Old 01-01-2016, 06:49 PM
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Having the support puts a lot less stress on all the bearings in the auger housing, but the input shaft bearing in the gearbox and the impeller bearing in particular benefit from this.
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post #4 of 18 Old 01-01-2016, 06:58 PM
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Hmmmm. Sounds like a retrofit project.

I can definitely see the benefit, and it being shot down by the OEM cost accountants. They want people buying a whole new machine when the impeller bearing goes south.
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post #5 of 18 Old 01-01-2016, 07:11 PM
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I know this doesn't count because naturally without sides on my bucket I need these struts to support the auger gearbox. What I found interesting however was there was a bunch of shims included so that the shaft from the impeller could be without any load from misalignment. I don't have any good pics at the moment, but these shims could be installed on the top or the bottom of the struts where it is bolted to the bucket. They were slotted so you could loosen the bolts and slide in/out until things lined up perfectly with the impeller.
This isn't the most photogenic pic of my machine, but you can clearly see the two auger gearbox struts and how they bolt to the bucket.
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post #6 of 18 Old 01-01-2016, 07:45 PM
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Quote:
Originally Posted by POWERSHIFT93 View Post
Can some one here enlighten me on this 1. I was perusing some threads here. and noticed that there is a bracket that holds up the gearbox to the top of the bucket. the old school snowblowers don't have it.
======================================

Here is my 1965 Jacobsen. I would say it would be called Old School. You can see the support bracket, that goes between the gearbox and the bucket. --- John


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post #7 of 18 Old 01-01-2016, 08:30 PM
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I Think it's a simple retrofit. The trick is to just unload the impeller bearing and not put an inverted load on it. Did the ones you saw have one strut or two?
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post #8 of 18 Old 01-02-2016, 01:52 AM
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Just a guess, but to eliminate vertical deflection against the bearings. Most of the Japanese MFG's tend to build them in, while a few domestic do. It could be that the domestics are relying on the two outboard auger bearings/bushings to maintain vertical auger axle stability, I don't know, I'm not an engineer.

Garage:
MTD....2 stage(modern 8.5 HP) not my favorite
Honda HS622 TA-B - acquired at an auction- nice machine for it's size.
Toro S-140- Picked it up on trash day... it runs, sort of.
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post #9 of 18 Old 01-02-2016, 08:29 AM
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Actually some of the much older machines from Ariens and Jacobsen (as pictured) did have said bracket.
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post #10 of 18 Old 01-02-2016, 09:55 AM
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I would think that one strut would be enough to lessen the overhung load on the impeller bearing. Again, the trick is to eliminate the force w/o creating a load in the opposite direction. I have never seen one on an MTD machine (for obvious reasons), but will start looking at others.

Given that it is a one-off, it would probably have to be adjustable, and I'll have to see how it is attached to the auger gearbox. Another project for after I finish the deflector control retrofit.
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