I just removed, disassembled, cleaned, inspected. One has a crack in the burner can which I plan to mig weld. The other was fine. Plans call for an annual inspection of these furnaces, as well as any furnace installed is a top priority before use.
I've found new gaskets for all but the igniter box. I've been told to look for mechanical packing which is the angel hair like flame retardant material used for the gaskets. I'm still looking for it locally from my heat/air car club buddy but haven't as of yet contacted him.
Does anyone have a 901 they have scrapped from your rig, but just had to hang on to? I'd be interested in buying one cheap for parts.
I think conventional wisdom is to replace these units because of the age and recalls. Until I find a unit that's a direct replacement requiring no cutting and patching of the exterior skin, I'll continue my inspections.
I applaud your resourcefulness in trying to resurrect your furnace, but if there is a crack in it I WOULD JUNK IT AND REPLACE IT WITH A NEW ONE!!!!!
In any furnace, there is a disinct possibility of CO leaks and susequent poisoning, and FWIW, it's not something I would trust after that type of repair. You sure don't want to wake up dead one morning (I know, you wouldn't wake up, but that's a philosophical matter)
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