Mr. Blake Writes-
I have a Harman XXV pellet stove that is about 6 y/o. I believe I may need a new feed motor. There is a low level grinding noise that occurs each time the feed motor is turned on. I’ve cleaned the chain and sprockets. The cam arm works w/out any apparent resistance. Periodically there is a “bump” noise that comes from what seems to be a miss alignment of the chain on the center sprocket. This is new as is the feed noise. If you have any thoughts on the source of the problem, I’d appreciate it.
Mr. Pellethead Replies-
Thanks for contacting us. By the description of it I would say the noise is coming from your auger motor gear box- my guess is that the grease inside has dried up and the gears are getting quite worn. Average life on those auger feed motors is 6-8 seasons. The ‘Bump’ noise is more than likely coming from the chain/sprocket and the chain jumping track.
1.Make sure the alignment of the sprockets appears in sync.
2.Check the teeth on the big and small sprocket.
3.Check the sawdust clean-out box in the feed system (door with wing nut behind auger motor) make sure it’s clean and that the slide plate doesn’t appear to be obstructed (Easiest to do with no fuel in the hopper).
More than likely the weak auger motor is what’s causing the chain to jump, but we do want to check those other items as well.
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