Changing Door Gasket on Harman I While Fire Is Burning

Modern and vintage hand fired coal stove are similar to a wood stove and in some cases can burn either. They need to be regulated and fed by hand usually every 12 to 24 hours depending on your usage. They require no power to operate making them ideal for rural settings with long power outages.
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Posts: 146
Joined: Mon. Jan. 24, 2011 6:33 pm
Hand Fed Coal Boiler: Standard sealed hot water boiler, hand fed
Hand Fed Coal Stove: Harman Mark I Magnafire
Baseburners & Antiques: Lehigh Oak 18, Washington potbelly, Sears Roebuck parlor cabinet, PIttston 6 lid cook stove, vintage combo gas/coal cook stove 4 lid
Coal Size/Type: nut
Stove/Furnace Make: Harman
Stove/Furnace Model: Mark I Magnafire

Post Tue. Dec. 17, 2013 10:52 am

yes I had to do just this on Sunday. Did a routine dollar bill test on the doors on a lark. Bottom door solid seal. Top door- WHAT ? The bill slipped behind the gasket for 1/2 of the door on top/bottom, and was only sealing on the hinge side for half the door.

great- how what ? Hardware store closes in 2 hours. Drove there got 6 feet of 1/2" seal/glue kit made by Imperial.

decided to change it with the fire burning

turned the damper all the way down to closed, opened upstairs 2 BR windows, and side house door, and let air in through screen door screen

removed door, put it on cardboard, changed the seal quickly, cleaned the glass while there, and pinned it back on. The glue dried in 2 minutes because the door was hot. I had to work with heat resistant gloves.

but it's back on and drafting even better than before, the stove was losing some draft around the door bleeding in as excessive over-fire air.

now she's cooking really good- video to follow
Coal stoves without fuel, are heavy, expensive decorations. Are there any coal mines in YOUR home state ? If you talk the talk, you have to walk the walk.

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Posts: 4678
Joined: Wed. May. 17, 2006 8:12 pm
Stoker Coal Boiler: 1981 EFM DF520
Coal Size/Type: anthracite/rice coal
Location: Forest Hill MD

Post Tue. Dec. 17, 2013 5:02 pm

Well that was quite a feat! The door lock on the Mark series is kind of a cam. I think for a temporary fix, I would have "adjusted" the cam keeper on the stove with a BFH to pull the door in tighter.
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"I would rather have a German division in front of me than a French one behind me." —General George S. Patton

Burning rice coal in a 1981 EFM DF520, nut coal in a hand fired Jotul 507.

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Posts: 343
Joined: Wed. Jan. 25, 2012 5:29 pm
Baseburners & Antiques: 2 Crawford 40 Baseheaters
Coal Size/Type: Stove Coal
Other Heating: Herald Oak No. 18
Location: Cassopolis, MI

Post Tue. Dec. 17, 2013 5:19 pm

You must have played hot potato when you were younger to prepare for that. Wow. I would have waited until it cooled down and done it because I'd have taken too long and filled the house up with carbon monoxide.

Great job! Very industrious.

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Posts: 1036
Joined: Wed. Mar. 24, 2010 7:18 pm
Baseburners & Antiques: Glenwood #8
Coal Size/Type: Direnzo nut, Lehigh stove
Other Heating: 45 year old oil furnace,and a crappy 24 year old heat pump
Location: Northeast Ohio.

Post Tue. Dec. 17, 2013 8:13 pm

Now my secrets out ;) , thats how I clean my glass but if the stove is running fairly hot I cover the door opening with foil so I have more time to let it cool. Keepaeyeonit :)

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Posts: 149
Joined: Sat. Nov. 26, 2011 8:52 pm
Hand Fed Coal Stove: DS Machine DS-1500WH
Coal Size/Type: Blaschak bulk nut
Location: Mechanicsburg, PA

Post Tue. Dec. 17, 2013 11:23 pm

You're a braver man than I am, Gunga Din.

Like Keepaeyeonit said (I think)...When I clean my stove glass I have a triple-thick blanket of heavy-duty aluminum foil (I get the wide roll) that I shape to the raised rim around the door opening, where the gasket seals when the door is closed, and just let the fire burn. If I had to do a door repair while burning, I'd likely do the same thing.

You can fasten the foil on with a couple of those small metal spring clamps used for gluing, but on my stove it stays pretty secure just by friction as long as you pinch it pretty good all around the door rim--wearing gloves, of course.

I have a CO detector right next to the stove and it's never peeped, even when I've taken my good old time cleaning the glass.

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Posts: 1029
Joined: Tue. Dec. 13, 2011 4:57 pm
Hand Fed Coal Stove: Chubby Coal Stove
Baseburners & Antiques: Our Glenwood 109
Coal Size/Type: Nut Anthracite
Location: Long Island, New York

Post Tue. Dec. 17, 2013 11:41 pm

Good job...impressive!

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