Pictures of EFM Install, Please Critique

Stoker Coal Boilers automatically feed the coal and have controls and pumps just like any conventions boiler. They are intended to be used as a primary heat and often have domestic hot water coils as an added bonus. They can be set up independently or in dual sytem with your existing oil/gas boiler. They can accommodate both hot water base board or steam plumbing.
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mooseman100
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Joined: Sat. Mar. 05, 2011 10:31 pm
Stoker Coal Boiler: EFM 520
Stove/Furnace Model: EFM 520
Location: winchester, va

Post Wed. Apr. 19, 2017 8:15 pm

At this point it looks as if the next thing is to take off the stoker unit. Does nay idy need to see anytning before I do so?

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Rob R.
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Joined: Fri. Dec. 28, 2007 4:26 pm
Stoker Coal Boiler: EFM DF520
Hand Fed Coal Stove: Hitzer 50-93
Coal Size/Type: Lehigh Rice
Other Heating: Dad's 1953 EFM Highboy
Location: Chazy, NY

Post Wed. Apr. 19, 2017 8:18 pm

That auger bushing is trashed for only 1.5 seasons of use. Mine was not nearly that worn after 5 years of use.

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mooseman100
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Posts: 137
Joined: Sat. Mar. 05, 2011 10:31 pm
Stoker Coal Boiler: EFM 520
Stove/Furnace Model: EFM 520
Location: winchester, va

Post Wed. Apr. 19, 2017 8:20 pm

That auger bushing got that way in about 2 months. The auger I took out had no bushing left at all! Just a small ring

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Rob R.
Site Moderator
Posts: 11343
Joined: Fri. Dec. 28, 2007 4:26 pm
Stoker Coal Boiler: EFM DF520
Hand Fed Coal Stove: Hitzer 50-93
Coal Size/Type: Lehigh Rice
Other Heating: Dad's 1953 EFM Highboy
Location: Chazy, NY

Post Wed. Apr. 19, 2017 8:30 pm

I think Scott is right, you have an alignment problem with the auger.

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Scottscoaled
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Posts: 2597
Joined: Tue. Jan. 08, 2008 9:51 pm
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
Location: Malta N.Y.

Post Wed. Apr. 19, 2017 8:31 pm

You need to pull the stoker. Look at the pot bushing It will be trashed.
I think a man does what he can, untill his destiny is revealed. Right now that is trying to sell my EFM plate boilers in 520 and 700 sizes.

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Scottscoaled
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Posts: 2597
Joined: Tue. Jan. 08, 2008 9:51 pm
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
Location: Malta N.Y.

Post Wed. Apr. 19, 2017 8:33 pm

See how the auger wants to come out the bottom of the cover? He will be lucky if the casting isn't worn oblong.
I think a man does what he can, untill his destiny is revealed. Right now that is trying to sell my EFM plate boilers in 520 and 700 sizes.

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User avatar
mooseman100
Member
Posts: 137
Joined: Sat. Mar. 05, 2011 10:31 pm
Stoker Coal Boiler: EFM 520
Stove/Furnace Model: EFM 520
Location: winchester, va

Post Wed. Apr. 19, 2017 10:56 pm

Do you think that spacer on there could have caused that wear?
So if pot bushing is worn or oblong, does that mean a new pot?

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Scottscoaled
Member
Posts: 2597
Joined: Tue. Jan. 08, 2008 9:51 pm
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
Location: Malta N.Y.

Post Thu. Apr. 20, 2017 9:13 pm

Yes, spacer could have caused wear. Take it apart and let's see what is wrong with it.
I think a man does what he can, untill his destiny is revealed. Right now that is trying to sell my EFM plate boilers in 520 and 700 sizes.

User avatar
mooseman100
Member
Posts: 137
Joined: Sat. Mar. 05, 2011 10:31 pm
Stoker Coal Boiler: EFM 520
Stove/Furnace Model: EFM 520
Location: winchester, va

Post Sat. Apr. 22, 2017 1:23 pm

Ok stage two of disassembly.
I measured the pot on the inside fo the fire chamber to check center as Mike suggested. It is truly out of center, by a more than 1". Due to spacer I would assume.
As you can see in the pictures the pot bushing does appear to be oblong as Scott mentioned it probably would.
We may have located the source of extra drag on auger. If there was already some pressure on auger from being on a bind, then any additional problem,that might normaly not be enough to break a pin, could put it over the top.
So now I can not get the pot off the stoker shaft, set screws have sheared off, will try to drill them out.
Attachments
IMG_0554.JPG
IMG_0558.JPG
IMG_0559.JPG

User avatar
mooseman100
Member
Posts: 137
Joined: Sat. Mar. 05, 2011 10:31 pm
Stoker Coal Boiler: EFM 520
Stove/Furnace Model: EFM 520
Location: winchester, va

Post Sat. Apr. 22, 2017 1:28 pm

This is a picture of the bottom of the stand, where the stoker plate bolts on. As you can see, it is broken. As I recall it was this way when I bought it. Is this going to be a proble,
m?
The metal plate that the stoker attaches to and goes over the hole in th stand has been welded across top, right above the pipe.
When I bought it the opt, stoker, plate and spacer were all assembled and would not come apart, so I had to line the enitre thing up as one unit when assembling it, the same today in disassembly
Attachments
IMG_0549.JPG
IMG_0547.JPG

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