Harman Magnum Stoker Feed Mechanism Tip

Harman Magnum Stoker Feed Mechanism Tip

PostBy: Matthaus On: Fri Dec 21, 2007 4:55 pm

I learned something yesterday about Harman Magnum feed mechanisms.

I installed the stove in a hurry on my way out of town on Tuesday (I had to since I sold the Alaska and the new owner was anxious to see what his money had bought him). Stove was installed in record time, I got it lit and went out the door to the airport. My wife called me after a few hours and said the stove was almost out, I went through the procedure for adjsuting max feed on the Coal-Trol and on the mechanism. The best she could get was a little over an inch of fire and 250* stove temps. Needless to say a 64 degree house was not meeting my primary customers requirements! :shock:

I returned home yesterday and immediately started looking at everything to see what was going on (just remember if momma ain't happy , nobody's happy :!: ). It took me a little bit of inspection and I almost gave up and removed the Hopper to tear into the mechanism when I noticed the feed mechanism fork was bent. See below for details and pictures.

Results:
Symptom: Feed would only increase to 2 dots at max. Root Cause: The feed mechanism fork that rides on the roller bearing had been bent at some previous time by a jam in the pusher area. Corrective Action: bend fork back to parallel position.


If you have a Harman, inspect your feeder mechanism fork at least once a season to make sure it has not bent and changed the settings on your stove. :)
Attachments
feed mech pre-correction.JPG
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If you look carefully you can see the bent fork
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Feed Mech Corrected.JPG
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Bent back to parallel
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Matthaus
 
Stoker Coal Boiler: Leisure Line WL110 Dual Fuel, natural gas
Hot Air Coal Stoker Stove: Leisure Line Lil' Heater (rental house)
Coal Size/Type: Rice and Buckwheat Anthracite

Re: Harman Magnum Stoker Feed Mechanism Tip

PostBy: ginski On: Fri Dec 21, 2007 6:19 pm

thanks for the tip!

isn't that mag extremely close to the back wall in the event you wanted to remove the stoker assembly or is it just the picture making it appear so?

merry christmas sir*

tom
ginski
 
Stove/Furnace Make: harman
Stove/Furnace Model: magnum stoker

Re: Harman Magnum Stoker Feed Mechanism Tip

PostBy: Matthaus On: Fri Dec 21, 2007 6:49 pm

hi Tom, yes the threaded rod is less than 2" from the wall. The stoker unit must be removed by unbolting the jack shaft (after removing the hopper). The pusher assembly has enough clearance to be removed after removing the stoker motor as well. This is not the easiest, but I figure if I have to remove it I am going to have to remove, clean and check everything any way so might as well have the stove back against the wall out of the way.

Your welcome and have a Merry Christmas, Happy New Year and much joy for you and yours. :)
Matthaus
 
Stoker Coal Boiler: Leisure Line WL110 Dual Fuel, natural gas
Hot Air Coal Stoker Stove: Leisure Line Lil' Heater (rental house)
Coal Size/Type: Rice and Buckwheat Anthracite

Visit Lehigh Anthracite

Re: Harman Magnum Stoker Feed Mechanism Tip

PostBy: beatle78 On: Wed Dec 26, 2007 6:07 pm

thanks Matthaus! I've been lucky where I've only had 1 jam since I had my stove and that was over 2 years ago. I'm also more observant when I open the bin and let the coal spill out into the buckets. I removed one quarter size piece this year.
beatle78
 
Stove/Furnace Make: Keystoker KA-4

Visit Lehigh Anthracite