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242B valve stem packing

Posted: Mon Feb 12, 2024 2:00 am
by fhendrikx
Hi,

The valve stem packing was crumbling on my 242B, along with some other issues. So I ordered the rebuild kit that oldcolemanparts sells.

I've just put in the new valve stem packing, but sadly, it feels a bit loose, and leaks fuel when under pressure. The stem is definitely 1/4" (0.63mm), so the part I was sent is the correct size. I've also made sure to place the retainer so that it fits over the C clip.

Picture of the fitted part is attached.

Any thoughts on what I should do?

Thanks

Re: 242B valve stem packing

Posted: Mon Feb 12, 2024 2:27 am
by Ridge Runner
Hi there, welcome to the CCF.

Making sure all of the old packing is cleaned out of the threads of the gland nut is important for a good seal. Otherwise, you might need to just tighten the nut some more. It should be smooth with a new packing, but not loose.

Sometimes I’m surprised by how much I need to snug up a new packing before they stop weeping.

Re: 242B valve stem packing

Posted: Mon Feb 12, 2024 2:29 am
by fhendrikx
Hi,

Thanks for the welcome! I'll give that a go this evening, so how it goes, appreciate your feedback. :)

Re: 242B valve stem packing

Posted: Mon Feb 12, 2024 2:31 am
by critmass_34
Welcome from SW Pennsylvania. +1 on try tightening it some more.

Re: 242B valve stem packing

Posted: Mon Feb 12, 2024 2:33 am
by Ridge Runner
Stop back in if it’s still giving you fits. And make sure to share some pics once you get it up and running. We like pics. 😎

Re: 242B valve stem packing

Posted: Mon Feb 12, 2024 2:41 am
by fhendrikx
Thanks for the welcome(s); hopefully some tightening will fix the issue.

I'll definitely be back with some pics. :)

Re: 242B valve stem packing

Posted: Mon Feb 12, 2024 3:00 am
by Gasman64
Ridge Runner wrote: ↑Mon Feb 12, 2024 2:27 am Sometimes I’m surprised by how much I need to snug up a new packing before they stop weeping.
I've experienced the same thing, and on a 242C, as well.

Good to have another Kiwi here, fhendrikx!
:cf_sign_welcomeccf:

Re: 242B valve stem packing

Posted: Mon Feb 12, 2024 10:00 am
by fhendrikx
Gasman64 wrote: ↑Mon Feb 12, 2024 3:00 am
Ridge Runner wrote: ↑Mon Feb 12, 2024 2:27 am Sometimes I’m surprised by how much I need to snug up a new packing before they stop weeping.
I've experienced the same thing, and on a 242C, as well.
Well, I tightened it a lot, and it no longer weeps. No leaks anywhere 8-)
Gasman64 wrote: ↑Mon Feb 12, 2024 3:00 am Good to have another Kiwi here, fhendrikx!
Thank you.

I have attached a photo of it running.

Image

It definitely runs well, but I did notice it needed a couple of pumps every so often to stay really bright.

Re: 242B valve stem packing

Posted: Mon Feb 12, 2024 6:20 pm
by oldfox66
You did replace the cap gasket with the one in the OCP kit, correct? If so and your losing pressure try loosening the check valve air stem, remove the pump, then back the stem out until you feel the last thread release, turn another 180 degrees and restart it. If not, you may need to remove the upper burner frame assembly, pump up the fount, and dunk test it.

The air stem is double threaded so once it wears a pattern it doesn't always seal unless replaced in the exact same orientation to the check valve. BTW, the main valve is threaded the same way, so one that leaks slightly may seal fine removed, turned 180 degrees, and re-installed.

Re: 242B valve stem packing

Posted: Mon Feb 12, 2024 7:52 pm
by critmass_34
Nice light up.

Re: 242B valve stem packing

Posted: Mon Feb 12, 2024 8:54 pm
by Old Cat
Welcome from Florida. The little 242 is usually a good running lantern. Yours is burning bright.

You can check for a check valve leak by pumping it up, and lightly place your thumb or finger over the pump shaft hole. If it rises you have a leak. When the air stem is tighten it should stop. If it rises with air stem tight, you have other issues.

Re: 242B valve stem packing

Posted: Mon Feb 12, 2024 10:43 pm
by fhendrikx
oldfox66 wrote: ↑Mon Feb 12, 2024 6:20 pm You did replace the cap gasket with the one in the OCP kit, correct?
Yep!
Old Cat wrote: ↑Mon Feb 12, 2024 8:54 pm You can check for a check valve leak by pumping it up, and lightly place your thumb or finger over the pump shaft hole.
I'll have a good look at it this weekend. Thank you for the tips both!

Re: 242B valve stem packing

Posted: Mon Feb 12, 2024 11:33 pm
by critmass_34
A crusty fuel fill opening can cause the cap to leak a little even with a new cap gasket.

Re: 242B valve stem packing

Posted: Tue Feb 13, 2024 5:43 am
by Gasman64
Good to see it working; you shined it up and cleaned it up well.