200A and 202 reproduction
frames back
in stock.
Optimist Prime
Hi, Guys.  I found a Milspec 1967 at a local antique mall last night.  I wasn't able to do much more than give it a once over and knock off some mud dauber nests.  It's in bad shape paint-wise, but looks structurally sound.  However, the vent has been painted silver at some point.  A portion of the silver paint has flaked off and the porcelain underneath looks to be in good condition.  I was wondering what to use that would not harm the porcelain, if that could even be a worry.  I suppose some paint remover from the hardware store would be fine, but are there any worries or things NOT to do?
Will
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Gand28
Paint stripper should be fine and not harm the porcelain. Sometimes if you let it sit in some hot water/tsp, it will lift the paint. 
Greg -- Fiat Lux!
ICCC Member #1273
Seeker of Canadian Nickel!
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Chucker
Once you get the paint off you may find the PO applied the paint to stop some areas from rusting where the porcelain has flaked off.  I've had success in using VHT flame proof paint and applying it with an small, artists size paint brush to those areas. 

You might be able to use a Dremel to get the surface rust off then clean with alcohol and apply the paint. I usually light the lantern, let it run for 3 or 4 minutes and apply the paint with the paint brush. I spray a little paint it it's cap when doing this.

I know it's not following the recommended VHT flame proof heat/cool cycles but mine still have the paint on them after a few years. VHT black or green is what I used. These will be a flat color due to the 2000 deg. F tolerance. 
Chuck
"Stop being angry, and forget about getting back at people; do not worry -- it only causes harm." Ps. 37:8
Eye-SEE-C-C Member #1333 -- MilSpecOps #003
"Michigan - from the Ojibwa word “meicigama,” meaning “great water.”
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Skydivedave
Post a Pic, Will. I'd love to see a before /after, as well as a money shot! 

David 
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Optimist Prime
I managed to get the thing running a couple of times, but only for about 30-40 seconds each time.  The fuel cap required a temp replacement.  Then I cleaned out a lot of sand and grit from the fount by flushing with fuel.  I cleaned out the generator with brake    cleaner   until it flowed well.  I ensured fuel came up from the fount in copious amounts.  And I cleaned the orifice as best as I could.   It really wanted to run, but couldn't keep it up.  Not sure if the orifice keeps getting clogged or fuel delivery from the fount is sporadic.   I guess I'll get a spare generator on its way and get that fuel path cleaned up better. 


20190626_202203.jpg
Will
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Skydivedave
I'll tell you what Chucker here in the forum recommended. I was about to pull the trigger on a new genny and he suggested I keep pricking the generator tip. After three or four times of removing it and pricking, it finally cleared and runs like a charm. Keep at it and good luck!
David 
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Skydivedave
Nice Pic! Woo hoo!! 
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Skydivedave
Yours looks like the cousin to my 'Butch.'  Click image for larger version - Name: MVIMG_20190627_115130_compress26.jpg, Views: 113, Size: 164.50 KB
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macwacs
Its the generator tip orifice getting plugged up with that sand and dirt.
 RMW
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Optimist Prime
macwacs, it's hard to say.  I generally try to do as little as possible at first to see how it runs, but since this one looked so rough I thought I might need to do more.  I flushed the tank out about 4 times by putting in over half a tank of fuel and shaking it around good, pour it into a container to let the solids settle, and filtering the fuel and doing it again.  I use the blue shop paper towels for a filter in the little yellow funnels.  I may need to do it some more.

I've removed and pricked the tip about 5 times.  What a pain to have to keep doing that, but it is what it is. I'll try it a few more times before I simply take the plumbing apart and start cleaning.  It had a lot of minerally looking concretions everywhere there was a union so far, I don't see why it would be any different with the rest of it.

skydivedave, the bottom had what looked like some unit numbers scratched into the bottom.  I'll get some of the rust cleared off and see if it makes sense to anyone.  I'm retired Air Force, so don't understand how the Army keeps themselves straight.  Oddly enough, there was a dime sized bit of surface that had flaked off all the way down to the Shiny Nickle. I can't decide whether to leave it crappy or re-do the heck out of it.  I would bet its scars are honestly come by, but a bath and a new suit might do it good.
Will
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Gand28
Try flushing the generator on the lantern. Install it backwards so the tip is out of the mixing chamber. Remove the tip and hold a cup underneath while opening the valve. Run a few cups of fuel through it. 
Greg -- Fiat Lux!
ICCC Member #1273
Seeker of Canadian Nickel!
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Chucker
Looks to me like too little air or too much fuel.

In post #1 you said, "...knock off some mud dauber nests." I'm thinking they may have stuck a nest where you can't just knock it off - meaning up one of the air tubes.

If that's not the issue the gen may be inserted too far into the mixing chamber (where the air tubes connect up top) and may need a good scrubbing with a 20ga. bore brush and carb spray or similar.  Careful to keep painted surfaces covered if using carb spray.  
Chuck
"Stop being angry, and forget about getting back at people; do not worry -- it only causes harm." Ps. 37:8
Eye-SEE-C-C Member #1333 -- MilSpecOps #003
"Michigan - from the Ojibwa word “meicigama,” meaning “great water.”
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JimL
If you've got a pan big enough to hold the vent in, boil it with water and some baking soda.  This works well at lifting the paint.

-Jim

Have you ever imagined a world with no hypothetical situations?
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Optimist Prime

I don't have any photos on my phone, but I had good luck with getting the silver paint off the vent.  It took about 10 rounds, but I got off enough to make me happy.  There is a tiny bit of silver left on the underside of the very top but I think I'll leave it there in tribute to the men who initially thought painting it was a good idea.  After some contemplation, I can see how it may have been a good idea to reflect light from the bottom of the vent, but can't for the life of me think of why they would want to paint the outer top for any other reason than signaling ownership.

The rest of the lamp stays lit longer after a good deal of cleaning, but the light still fluctuates and the pressure drops quickly.  I had it going for over an hour but had to pump it up every 5 minutes or so.  I have new generators coming, but taking it all apart and cleaning it thoroughly will  have to be done again.

I looked through all the awesome ideas you gave me for cleaning, and will make every attempt to incorporate them into the cleaning rituals.  Thanks much!


Will
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Chucker
Hey Will, soundsl like success over the silver paint! 

Also, having to re-pump it every 5 minutes is usually due to the fuel rod sticking 'down' in the F/A tube. I'd pull the valve, disassemble the F/A, and clean that up if you haven't yet OR you may not have had the valve opened all the way while running. 
Chuck
"Stop being angry, and forget about getting back at people; do not worry -- it only causes harm." Ps. 37:8
Eye-SEE-C-C Member #1333 -- MilSpecOps #003
"Michigan - from the Ojibwa word “meicigama,” meaning “great water.”
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Optimist Prime
So, Chuck, You're right that I didn't have the valve open all the way.  When I did venture that far it wasn't long until huge flames started up.  This was repeatable.  Unfortunately, the screw hole for the handle broke apart during the initial taking off of the knob.  Brittle and deteriorated.  Now I'm reduced to using a pair of vise grips to turn it.  The valve did not seem to want to come out for inspection or replacement so I obliged it and went on to other things.

The vent came out as a real stunner.  Dark olive green porcelain with only one ding on the rim of the upper vent.  I am very pleased, though it did take some work, some green scrubbies, and a wire brush with a generous bit of elbow grease.
Will
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MYN
Hello Will,
You have a 1967. Is that a Coleman or an AFM?
Your's definitely in much better shape when found  than mine.
I'll say you need not completely strip tge valve down to the individual components. You don't want to risk breaking something else inside. Just loosen the gland nut a little and lubricate the moving parts.
Its better if you could dismantle the F/A fuel pickup tube for a thorough cleaning. 
You're fortunate to be able to get a new generator on its way. I need to use whatever's original on mine.
If you disassemble the generator, there should be some fibrous asbestos inside. They are likely to be saturated with carbon and old carbonized fuel. Remove the jet/nipple and flush out with acetone or CF, as much as possible the dirt inside the generator till you get a clear liquid out of that. Prick and clean the jet/ nipple as well.
Re-assemble the generator, pressurize the fount and check if you could sustain a fine, uninterrupted flow of fuel through that. If all goes well, you're ready to reassemble the lantern for a re-test.
As mentioned, do ensure that the air tubes are clear before re-light.
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Optimist Prime
Happy 4th!   It's fitting and proper that my milspec lantern be reborn on such an auspicious day. I was sitting on the back porch when it hit me that the air tube(s) had not been checked for obstructions.  MYN was the key to the responsible input...Thanks!  I've cleared mud dauber and spider nests before but I wasn't thinking through what were the air tubes for this lantern.  I did find some spider nest and clear all that out really well.  That did the trick. I tied on a new mantle, put in some fuel, and went back outside to light him up.  There were some teething pains but I understand that 252s do that.  Eventually it evened out and kept bright.  It's been an hour now and no flareups or hiccups.  Hand Salute to all of you.  My only other question at this time would be do I keep the two air tubes both open, or just have the plug removed from just the one side?
Will
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macwacs
Your call. I had a lantern and both were open so I closed one off. Not a problem at sea level. Might need both open if operated at a higher elevation. Lately my base of operation has been limited to 3,500 ft. or less and all has been good. If I ever get up to &,000 to 10,000 again then that might be a different story and have to open both air tubes up on all my lanterns again.
 RMW
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NYGfan
Glad you got it sorted. Try it both ways one plugged then both open and see which way it runs better.
Joe
Mil-SpecOps #0219
Stovie and Damn proud of it

 
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Chucker
What Ron (macwacs) and Joe say, if it needs it but otherwise all mine are plugged. We are approximately 750ft. above sea level here. 

I've decided that if one starts overflaming (usually from an enlarged generator orifice) I would pull the air plug to allow the air/fuel ratio to get back in sync. 
Chuck
"Stop being angry, and forget about getting back at people; do not worry -- it only causes harm." Ps. 37:8
Eye-SEE-C-C Member #1333 -- MilSpecOps #003
"Michigan - from the Ojibwa word “meicigama,” meaning “great water.”
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MYN
Congratulations, Will.
The possibily of clogged air tubes had been mentioned earlier before me. So my input was just a reminder, not exactly the key.
So is it currently running with the old generator or a new one?
You've mentioned earlier that it couldn't hold pressure long enough. So I'm guessing that you had the whole lantern re-done among other things, before getting more thorough with the air tubes.
So the actual trick that got it going could be more than just the air tubes.
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