502 burner bowl won't budge

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MiguelHerbert
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502 burner bowl won't budge

#1

Post by MiguelHerbert »

I have been working on a 502 stove for over a month now, and can not get the burner bowl unscrewed. I have: soaked the threaded area with penetrating oil a couple dozen times, and waited for two or three days with no luck/I have heated and clenched with a propane torch a lot.

I use a ball-pean hammer to tap the area, and then give it a go with large channel locks. I also use the channel locks to try and wiggle right and left, with no result. I am wondering if the P/O used lock-tight on the darn thing.

Also: I've worked on five of the 502's before, with varying degrees of difficulty getting the bowl removed--but the longest it has ever taken is 3-4 days of patience while the penetrating oil did its trick.

Anybody else had this happen?

It's been suggested in earlier threads that I purchase on of the pronged oil filter wrenches--should this be my next step?
zoomkat
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Re: 502 burner bowl won't budge

#2

Post by zoomkat »

The various oil filter tools might provide options. You might try clamping a pair of needle nose vise grip pliers on the rim edge so you will have something to tap with a hammer. Just hard to get a grip on the burner without damaging it.
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Mister_Wilson
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Re: 502 burner bowl won't budge

#3

Post by Mister_Wilson »

Careful not to twist and deform the Bunsen.
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Rubing
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Re: 502 burner bowl won't budge

#4

Post by Rubing »

Mister_Wilson wrote: Tue Nov 23, 2021 7:11 pm Careful not to twist and deform the Bunsen.
I have twisted a bunson right in two 😩
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BillHoo
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Re: 502 burner bowl won't budge

#5

Post by BillHoo »

I've had luck with stuck parts by applying tension to TIGHTEN just a little. Not much. Release, then try to UNTIGHTEN. Sometimes it breaks free.
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Re: 502 burner bowl won't budge

#6

Post by TwoCanoes »

A 3- or 4-pronged oil filter wrench is a huge aid for the 502 problem. Beyond the wrench, Timm's method is pretty effective. He heats the joint and while hot, sprays it with penetrating oil. Then heat it more, spray more penetrating oil, and check for success. I tried it with propane, but had no luck. Took the stove to Timm's shop. He used Map-Pro, which I would have thought isn't enough hotter than propane to make a difference, but we got the burner bowl off. I think Timm was more gutsy than I at heating. I believe he heated the joint to a higher temp than I was doing. Anyhow, it came loose. Make sure there are no gas fumes in the tank. It's a hot, fiery operation, but effective. Maybe Timm will chime in to refine my description of his method.
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Re: 502 burner bowl won't budge

#7

Post by Sandman »

Rubing wrote: Tue Nov 23, 2021 8:16 pm
Mister_Wilson wrote: Tue Nov 23, 2021 7:11 pm Careful not to twist and deform the Bunsen.
I have twisted a bunson right in two 😩
Then its called a “Bumson”.....🤬
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Tgarner01
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Re: 502 burner bowl won't budge

#8

Post by Tgarner01 »

I personally use a 3 fingered spring loaded oil filter wrench and an oxygen/acetylene welding tip on my torch to pinpoint heat where I want it... Usually just a dull red on the bowl will break it free... If you think the Bunsen got too hot you can dribble a couple drops of water in there which will also help quench it free from the bowl... I've never had to heat one more than once with this method.

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stoves1234
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Re: 502 burner bowl won't budge

#9

Post by stoves1234 »

Good advice up above. I think the oil fillter wrench mentioned earlier is a big key to getting them loose. Usually a few cyces of heat and quench works for me. On the more stubborn ones I'll spray acetone-ATF homebrew on the theads after they've cooled enough so the penetrant doesn't burn off. Removing stubborn model 500 fasteners requires another thread!
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Re: 502 burner bowl won't budge

#10

Post by Majicwrench »

I always stop and ask myself if I really need to remove what it is I am working on.
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Gunhippie
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Re: 502 burner bowl won't budge

#11

Post by Gunhippie »

Stewart gave a pretty good description of my technique. I'm also using a two-jaw oil filter wrench that Stewart gave me--it work well on oil filters, too!

My theory is that by applying the carbon-rich penetrant directly to the hot metal, where it immediately vaporizes and burns, is reducing the rust to iron dust, and indeed, you'll see a fine black powder where once there was rust. Whatever the reason, it works.
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Re: 502 burner bowl won't budge

#12

Post by 25_502s »

I’ve disassembled one or two haha of these and have never found one that this tool mentioned above couldn’t handle. Lowes or home depot ( which ever one that’s sells Husky) should have it in stock.
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gootsch
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Re: 502 burner bowl won't budge

#13

Post by gootsch »

I got mine at NAPA.
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Re: 502 burner bowl won't budge

#14

Post by WYSIWYG »

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