Tri-Burner Fix

Tri-Burner Fix

PostBy: pconn171 On: Thu Dec 27, 2012 12:12 am

My tri-burner motor stopped working and at first glance I thought I would need to replace the stoker because it's quite an integrated system. I took it apart and realized that the bushing was a little sloppy. My thought was that the dusty fines were wearing on the bushing causing some excessive play. The shaft that rides in the bushing is also the shaft that centers the rotor in the stator. I think that the play became so large that the rotor was actually touching the stator wall preventing it from spinning. My fix was to replace the bushing with a bearing. The shaft was a strange dimension that didn't offer a direct drop-in bearing so I had to add an adapter to the shaft to fit a standard bearing. The bearing is sealed and should perform much better than the factory bushing. (fyi - I contacted the factory that made the motor to see if they had the same spec with a sealed bearing option and they didn't offer the unit anymore and they said they didn't make them for Reading Stove anymore)

Been running 24/7 since October without a hiccup or an indication that it wasn't the proper fix. Before updating, it wouldn't even spin and if it did, it vibrated excessively and would stop intermittently.

Below are my pics of the fix...
Stock Assembly.JPG
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Stock Bushing.JPG
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Stock Shaft.JPG
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Updated Shaft with Adapter.JPG
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Sealed Bearing.JPG
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Updated Assembly.JPG
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pconn171
 
Stove/Furnace Make: Reading
Stove/Furnace Model: Susquehanna

Re: Tri-Burner Fix

PostBy: jtmalt On: Thu Dec 27, 2012 12:43 am

Wow, that's a pretty impressive fix. I never would have thought you could get a sealed bearing for that, let alone a shaft adapter!
jtmalt
 
Stove/Furnace Make: Alaska
Stove/Furnace Model: Kast Console II

Re: Tri-Burner Fix

PostBy: Rick 386 On: Thu Dec 27, 2012 9:34 am

Nice but can you supply part numbers and/or source so that others may be able to rebuild their tri burner motors ??



Rick
Rick 386
 
Stoker Coal Boiler: AA 260 heating both sides of twin farmhouse
Hot Air Coal Stoker Stove: LL Hyfire II w/ coaltrol in garage
Coal Size/Type: Pea in AA 260, Rice in LL Hyfire II
Other Heating: Gas fired infared at work

Visit Lehigh Anthracite

Re: Tri-Burner Fix

PostBy: LsFarm On: Thu Dec 27, 2012 11:45 am

Very nicely done!! did you machine the shaft adapter or was it commercially available?

Greg L
LsFarm
 
Stoker Coal Boiler: Axeman Anderson 260
Hand Fed Coal Boiler: Self-built 'Big Bertha' SS Boiler
Baseburners & Antiques: Keystone 11, Art Garland

Re: Tri-Burner Fix

PostBy: pconn171 On: Fri Dec 28, 2012 11:03 pm

Sorry - no these aren't commercially available. I had them custom machined from a machine shop. The drawings are below for the parts and the bearing was purchased from McMaster Carr - part# 6384K342. The press fit with the bearing was a little on the tight side so I'd modify the hole diameter a little if you were to copy this.

Bearing Housing.PDF
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Sleeve.PDF
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pconn171
 
Stove/Furnace Make: Reading
Stove/Furnace Model: Susquehanna

Re: Tri-Burner Fix

PostBy: Freddy On: Sat Dec 29, 2012 6:32 am

Very cool. I love little projects like this! Are there two, one for the other end of the shaft? Or...is that what is the sleeve is for?

Thanks for sharing.
Freddy
 
Stoker Coal Boiler: Axeman Anderson 130 (pea)
Hot Air Coal Stoker Stove: Reading piece o' junk in the barn (rice)
Coal Size/Type: Pea size, Superior, deep mined

Re: Tri-Burner Fix

PostBy: pconn171 On: Sun Dec 30, 2012 10:06 pm

I'm not exactly sure what the other side is. I'd have to take another look. It's the side that has the gear on it that fits into the gear reduction system so it might be guided by that. It's definitely in a cleaner area and it facing downward though so the dust wouldn't fall into it.

The shaft adapter is purely because the shaft is a very strange diameter and you can't get a standard bearing and/or bushing to fit it. It's not metric or a standard SAE size so I just made an adaptation to use a standard bearing.
pconn171
 
Stove/Furnace Make: Reading
Stove/Furnace Model: Susquehanna

Re: Tri-Burner Fix

PostBy: coaldale On: Sat Jan 05, 2013 2:18 pm

Did you ever consider having more of them made and selling them?
coaldale
 
Stove/Furnace Make: reading
Stove/Furnace Model: lehigh

Re: Tri-Burner Fix

PostBy: pconn171 On: Tue Feb 05, 2013 1:29 pm

coaldale wrote:Did you ever consider having more of them made and selling them?


I did at first, but I don't think there's a huge market for this, which is why I put the drawings up anyway. I also don't know if all tri-burners are the same, but I know this one fits mine.
pconn171
 
Stove/Furnace Make: Reading
Stove/Furnace Model: Susquehanna

Visit Lehigh Anthracite