Coleman 425 leaking

Discussion in 'Stove Forum' started by Francois, Jul 1, 2020.

  1. Francois Canada

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    Hi

    I’ve searched previous answers to leaking valve problems but I’m not sure I’ve seen an answer to this. Valve is leaking, tried tightening the nut, doesn’t really work, dissemble the valve and found like a damaged O-ring (see photo where the tool is). When assembly i believe the Small metal ring on the left Goes over where there used to be some kind of an o-ring. Is there such a thing as just an o-ring replacement or what part should I buy. Thanks in advance and sorry if it’s not super clear and I’m really not an expert in this.
     

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  2. hikerduane

    hikerduane Subscriber

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    I'm not sure about these newer models, but older ones used graphite packing sandwiched in there. You can shape your own packing from sheets or buy likely from Oldcolemanparts.
    Duane
     
  3. Francois Canada

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    Ok thanks Duane. I’ll explore that route. I was assuming there was something like an o-ring in the groove (if not then why a groove). Thanks again.
     
  4. hikerduane

    hikerduane Subscriber

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    Could have been a oring in there, I'm not familiar with something so young.
    Duane
     
  5. Francois Canada

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    Thanks again. Time is relative. It’s young and yet 20 years old.
     
  6. cottage hill bill

    cottage hill bill Subscriber

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    The sequence of parts starting from the end of the valve shaft the needle screws into is:
    split ring (looks like a piece of wire around the shaft)
    Thin brass ring, concave on one side, flat on the other. On reassembly the concave side goes toward the split ring.
    Graphite packing - order from Old Coleman Parts. You want the large packing - same for lanterns and stoves
    Thick brass ring - flat both sides.
    When you put it back together tighten the gland nut until the valve stem will barely turn then back it off a couple flats.
    Take the knob off and everything slide off/on the back side of the stem.
     
  7. Francois Canada

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    Thanks a lot Cottage Hill Bill. I’ve been trying to find a diagram, a photo or anything to put elements in sequence. So this is really helpful. Strange there doesn’t seem to have that info available anywhere. Thanks again.
     
  8. cottage hill bill

    cottage hill bill Subscriber

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  9. Francois Canada

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    I haven’t found one that detailed before. Thanks.
     
  10. SveaSizzler

    SveaSizzler United States Subscriber

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    I have 425F that leaks a pool of white gas into the recess under the generator/valve assembly. I pulled it from active use. My Coleman fettling skills are still green. Interested in your progress.
     
  11. cottage hill bill

    cottage hill bill Subscriber

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    @SveaSizzler Mostly likely the same problem as above, leaking at the valve gland nut. Try simply tightening the nut. You can use some soap suds to look for the leak. Off the stove, empty the tank, pump it up (60 or so pumps), put some soap suds around the valve nut both where the threads are and where the stem comes through. Put your finger over the jet and open the valve about a turn. You'll see it start blowing bubbles at the leak. The other way is to pump it up and dunk the whole tank and generator in water and watch for bubbles.
     
  12. SveaSizzler

    SveaSizzler United States Subscriber

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    I have a set of 5 leather cup washers on order. She also had an issue getting up to pressure. When that stuff gets in, I'll tackle it.
    Is the Valve Gland Nut behind the plastic knob? And do I have to pull off the knob to get at it? 7/16'' Wrench?
    Doing a dunk test on a 425 tank and generator takes a pretty deep sink. It's at least a Quart by volume.
    I bought a Stansport propane bottle adapter, but found its Fuel Feed Tube [in lieu of generator] is about 2'' too long for a 425. Perfect fit for the 413 however.
     
  13. cottage hill bill

    cottage hill bill Subscriber

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    Yes the gland nut is the one between the valve body and knob. 7/16". You don't have to take off the knob to get to the nut but will have to take it off to replace the packing if that is necessary. First I would make sure where the leak is. Kitchen sink or bathtub should be more than adequate to dunk test. Soap bubble method can be done on workbench. I use a small plastic bottle, 2 oz or so that had a flip up spout. Half full of water, few drops of dishwashing liquid and shake. With pressure in the tank, squirt the suds on the valve where shaft goes into nut and on front side of nut, open valve part way and see where bubbles start getting bigger.
     
  14. cottage hill bill

    cottage hill bill Subscriber

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    @Francois , My apologies, I told you wrong. The 425 stove takes the small packing. I hope you haven't ordered them yet.
     
  15. Francois Canada

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    Hi Cottage Hill Bill. The 425F do take the large packing. So you were right. I ordered the part, installed it and now my stove works like a charm. Thank you very much for your help.
     
  16. cottage hill bill

    cottage hill bill Subscriber

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    Glad it worked out. Now you need a 413 and a 426, oh and a 500 or 500a and certainly a 502 and …
     
  17. Francois Canada

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    Yes I guess it’s kinda mandatory now :-)
     
  18. Duck United States

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    Your such an enabler. Lol. But I agree he needs a few more Colemans. Too bad he’s So far away I’m thinking of down sizing. Who needs 4 413gs anyway.
     
  19. Francois Canada

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    Cottage Hill Bill. Just found an old functional 421 for 7$... should I buy it? never mind. Just did :-)
     
  20. Ed Winskill

    Ed Winskill United States Subscriber

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    As long as it's Canadian $...8]