Burner Pot Machining Issue

Burner pot machining issue

PostBy: Paul produce farmer On: Fri Apr 07, 2017 7:28 pm

I was in the process of installing new burner plates into my EFM 520, when I pulled the old plates out, attached to the bottom of the burner plates was a "iron ring" that was in poor shape. I Noticed my aluminum feed pipe had backed our of the burner pot. I have been having difficulty in inserting the pipe back in, (It appears that some build up of rest etc is causing my issue with inserting the pipe back in) so I disassembled the burner pot and pulled it out to work on the access for the feed pipe. At this point I noticed too that the burner pot gooseneck machining does not have a groove/lip for the rope gasket to be placed on when putting in my burner plates. My burner plates would rest right on the gasket. How critical is that lip? ( I suspect that is where the ring came from when I pulled out the old burner plates). any thoughts out there how I should best proceed? thanks. Paul

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This is the gooseneck machining
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Closer picture--should there be a rim on this for the burner plates to go against?
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Last edited by Paul produce farmer on Sat Apr 08, 2017 9:52 am, edited 1 time in total.
Paul produce farmer
 
Stoker Coal Boiler: EFM 520
Coal Size/Type: rice
Other Heating: Keystocker k-8

Re: Burner pot machining issue

PostBy: StokerDon On: Fri Apr 07, 2017 9:09 pm

Welcome to the forum.

Pictures would be a great help so everyone could figure out what your talking about. I have experienced a large gap between the burn plates and the bottom of the goose neck because of the goose neck being more "L" shaped rather that "U" shaped. You can use a 1/2" or 5/8" rope gasket with Hi Temp silicon to hold it in place.

Not sure how to attack the feed pipe issue without seeing it.

-Don
StokerDon
 
Stoker Coal Boiler: BairMatic BMC-500 with Van Wert VA400 Stoker, Gentleman Janitor GJ-671/EFM S-15 stoker, Van Wert VA-600
Hand Fed Coal Furnace: Harman SF3500
Coal Size/Type: Rice and Chestnut
Other Heating: Noth'in but COAL! Well, Maybe a little tiny bit of wood

Re: Burner pot machining issue

PostBy: Paul produce farmer On: Fri Apr 07, 2017 10:06 pm

thank you for your interest, I will try to supply a picture Saturday morning.
Paul produce farmer
 
Stoker Coal Boiler: EFM 520
Coal Size/Type: rice
Other Heating: Keystocker k-8

Re: Burner pot machining issue

PostBy: Paul produce farmer On: Sat Apr 08, 2017 9:56 am

I have been able to grind the access for the feeder pipe and will have to redrill the bolts/ (and re-tap threads) that tighten the pipe in place, I am concerned about the gooseneck machining and have attached a couple of pictures. Any help is appreciated. Thank you. Paul
Paul produce farmer
 
Stoker Coal Boiler: EFM 520
Coal Size/Type: rice
Other Heating: Keystocker k-8

Re: Burner pot machining issue

PostBy: StokerDon On: Sat Apr 08, 2017 10:27 am

That one looks more rusted away then any that I have had. You can try using the bigger rope gasket and silicon it in place, but it looks like there's not much to hold the gasket in there. If that doesn't work, you will need to replace the bottom of the pot.

Is the pot bushing still good?

-Don
StokerDon
 
Stoker Coal Boiler: BairMatic BMC-500 with Van Wert VA400 Stoker, Gentleman Janitor GJ-671/EFM S-15 stoker, Van Wert VA-600
Hand Fed Coal Furnace: Harman SF3500
Coal Size/Type: Rice and Chestnut
Other Heating: Noth'in but COAL! Well, Maybe a little tiny bit of wood

Re: Burner pot machining issue

PostBy: Paul produce farmer On: Sat Apr 08, 2017 10:58 am

I am not sure what you mean "pot bushing"?
Paul produce farmer
 
Stoker Coal Boiler: EFM 520
Coal Size/Type: rice
Other Heating: Keystocker k-8

Re: Burner pot machining issue

PostBy: StokerDon On: Sat Apr 08, 2017 11:58 am

Paul produce farmer wrote:I am not sure what you mean "pot bushing"?

The pot bushing is what the auger bushing rides in. It's good practice to replace the pot bushing if you have the pot out of the boiler, It's very difficult to replace with the pot in the boiler.

Pot bushing.
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Auger bushing.
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-Don
StokerDon
 
Stoker Coal Boiler: BairMatic BMC-500 with Van Wert VA400 Stoker, Gentleman Janitor GJ-671/EFM S-15 stoker, Van Wert VA-600
Hand Fed Coal Furnace: Harman SF3500
Coal Size/Type: Rice and Chestnut
Other Heating: Noth'in but COAL! Well, Maybe a little tiny bit of wood

Re: Burner pot machining issue

PostBy: Paul produce farmer On: Sat Apr 08, 2017 12:47 pm

Don: Thank you ; yes it makes sense to replace it now;

I have been fabricating a steel ring to fit onto the gooseneck machining was not successful in brazing it onto the gooseneck, will try to tack it on with nickle rod and if that does work to my satisfaction I will epoxy it on with high temperature epoxy. I really don't think I need a great deal of strength , but enough to hold the rope gasket in place.. Any thoughts in my approach here. , again thank you. Paul
Paul produce farmer
 
Stoker Coal Boiler: EFM 520
Coal Size/Type: rice
Other Heating: Keystocker k-8

Re: Burner pot machining issue

PostBy: Paul produce farmer On: Sat Apr 08, 2017 5:24 pm

Don: Is that pot bushing a dealer item or can I get one at a good hardware shop, if so what are the exact size? thanks. I was able to weld the steel ring on the gooseneck--quite satisfied with the way it turned out so far.
Paul produce farmer
 
Stoker Coal Boiler: EFM 520
Coal Size/Type: rice
Other Heating: Keystocker k-8

Re: Burner pot machining issue

PostBy: Rob R. On: Sun Apr 09, 2017 6:54 am

If it were me, I would have sourced a different casting. The inside of that gooseneck is very rough and corroded, and will cause coal grinding.
Rob R.
 
Stoker Coal Boiler: EFM DF520
Hand Fed Coal Stove: Hitzer 50-93
Coal Size/Type: Lehigh Rice
Other Heating: Dad's 1953 EFM Highboy

Re: Burner pot machining issue

PostBy: Paul produce farmer On: Sun Apr 09, 2017 6:34 pm

Thanks Rob for your observation; I will grind the inside down to bear metal before re-assembling.
Paul produce farmer
 
Stoker Coal Boiler: EFM 520
Coal Size/Type: rice
Other Heating: Keystocker k-8

Re: Burner pot machining issue

PostBy: Scottscoaled On: Sun Apr 09, 2017 7:11 pm

We going to get pictures of your weld job? No pictures, it didn't happen. :lol: :lol:
Scottscoaled
 
Stoker Coal Boiler: EFM 520, 700, Van Wert 800 GJ 61,53
Baseburners & Antiques: Magic Stewart 16, times 2!
Coal Size/Type: Lots of buck
Other Heating: Slant Fin electric boiler backup

Re: Burner pot machining issue

PostBy: creek44 On: Mon Apr 10, 2017 12:56 am

When I rebuilt my 520 the bushing was gone and the casting was worn so badly I could not install a new bushing. Bought a new casting and installed a new bushing. No regrets since.
creek44
 
Stoker Coal Boiler: EFM 520
Coal Size/Type: Rice

Re: Burner pot machining issue

PostBy: scrapper_23jr On: Mon Apr 10, 2017 7:06 pm

that thing looks nasty, thrown better ones than that in the scrap dumpster, better off to purchase a whole new assembly with the new bushing in place from a dealer rather than try to weld or fabricate a ring onto it that ring is a very crucial part of the assembly and if not done correctly you are wasting time and money SCRAPPER
scrapper_23jr