Coal around cam on Keystoker 90

What are your thoughts on this? I woke up this morning and my house was cooling down. I went down and checked the stove and the gear motor/pusher bar/fan unit was not running. I unplugged the stove and plugged it back in (barely any flame) and heard a clunk and it started running. I immediately turned it off, emptied the hopper and cleared the grate figuring something had jammed up the works in there. I then plugged it back in....and still nothing. By toggling it on and off and watching the motor/cam with a flashlight I was able to see that there were bits of coal in the cam's path....so I used qtips and a piece of wire to get it all out of there (vacuuming would not cut it), then it ran freely for a couple of hours with no problems after I liberally sprayed everything down with WD 40. What I'd like to know now is how the h$ll does coal get down around that cam? Was this likely the problem or is my gear motor probably going to die? It seems to be running fine now...I fired it up again. I am majorly stressing here...lambing season is upon me, and we are all recovering from some cold fever crappy illness and I just found out my Maytag dishwasher is a fire hazard...then this coal stove problem. I am having a Calgon moment today.

When the pusher block goes back and forth, there is a small clearance around it, and fines (coal ash/dust) will get in there, but you did the right thing, clean it out and keep it lubricated. mine is clunking every now and then, but I see buildup on it too. I vaccum it out every now and then.

It may have had a blockage (larger chunk) and could have thermally shutdown?

Its running ok now. My house is warm again. I guess I wont worry about it. Glad to know you've heard of this. Hopefully I can keep it running! Time will tell. Thanks for writing back.
-Deb

then it ran freely for a couple of hours with no problems after I liberally sprayed everything down with WD 40.

Just a word of caution when using WD-40 on Keystokers. WD-40 is not good for some of the seals in motors. Keystoker dealer told me to use 3-in 1 oil SEA-20. I'm not saying you did any damage to your stoker, just warning you that it can't be used on everything.

Thanks Redman. I'll have to get some. That's why I post here.......so I can be less ignorant. I guess I should have called keystoker.