Furnace won't light - broken pilot line

Started by sbb2112, July 23, 2012, 10:06 PM

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sbb2112

I have a coleman furnace and it wouldn't light. I removed the heat exchanger (exhaust first, unplug wires, slide burner out of case) and realized the elbow for the pilot line was broken at the locknut at the pilot end. everything seems fine otherwise. Gas valve works, fan works, no visible cracks. Cant seem to find a replacement or a diagram of what should be there.


Presidential model 4322


Any help would be great.

Oz

We have the service manual for this furnace in the Member Area -  Manuals & Diagrams.


Take a look at that and see if that helps  ;)

1969 D22, 2 x 1974 D24 Indians, 1977 27' Itasca

sbb2112

Thanks Mark.  I believe I found the part that is broken.  It is used also for kitchen fryers and is a pilot orifice elbow. The LP versions I found have a .010" orifice and other than the thread being the wrong gender, I believe it will work. The part is available here and elsewhere:  http://www.fixitshop.com/Merchant2/merchant.mv?store_code=Applianceparts&screen=PROD&product_code=PIL-01025

sbb2112

That part was a perfect fit. I took the old elbow off and used only the pilot orifice that was plugged beyond repair.

Oz

1969 D22, 2 x 1974 D24 Indians, 1977 27' Itasca

sbb2112

Lights right up. Thought I was in for a new furnace. I guess not today! Really puts out some heat. My wife thought I'm crazy in 90 degree heat trying to get the furnace fixed. I'll see what she says when it gets colder..