Replacing One-Piece-Cap Gasket (easy how to)

Instructions and How-to from members. Safety posts.
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Deanofid
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Replacing One-Piece-Cap Gasket (easy how to)

#1

Post by Deanofid »

Hi all;

There was a recent thread about single piece fuel caps, and how to get the old gaskets
out of them. A number of suggestions came up. Pull them out with needle nose pliers,
dig at it with a screwdriver, cut it to pieces with a knife, burn it out (removing the
paint, too) or Goo Git or some kind of chemical.

Lots of ways to do it, I'm sure. I've done a bunch of them the past few months, and
the way I'm going to show works well, is fast, and pretty easy.





I use a bent end scribe. Similar tools are sold as O-ring tools at auto parts stores.
These are about $5, and a handy tool.






Put the pick end of the tool in the cap using one of the air vent slots to guide it.
This will help you push it in straight, and also keeps from putting pressure directly
on the thread peaks as you use the tool.






Put your thumb on the smooth part of the scribe where it's bent, and push down firmly
to drive the point of the tool in between the rubber ring and the side of the cap.






Keep pushing down, and lever the scribe handle away from the cap, and the point goes
under the gasket and peels up an edge, like so.
You might should wear leather gloves when you do this so you don't perforate your
tender body.






Now push the shaft of the tool through the gasket enough so you can use the edge of the
cap as a fulcrum, then pull out the gasket.






That's about it for getting one out. This takes about a minute.






Here, you can see why these older caps leak air. Just looking at the gasket while it's
in the cap, they often look just fine. However, they get weather checked similar to
old tires, and air comes out of the fount.






To put the new one in the cap, drop it in and make sure it is sitting down on top of
the flared inside part of the cap center.






With your thumbnail, or a popscicle stick, push in at one point. Then chase the edge of
the gasket around the center of the cap until it's in flat.






And that's it. Few minutes.

Dean
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Newfie
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Replacing One-Piece-Cap Gasket (easy how to)

#2

Post by Newfie »

I'm the one who asked the question Dean. Thanks a bunch for this. This will come in real handy.

I think this should be moved to How-To and Safety Pages forum.
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Replacing One-Piece-Cap Gasket (easy how to)

#3

Post by pogobratt »

I have not changed one of these yet, but I'm sure my day is coming, Thanks for posting Dean.

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fatherof31970
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Replacing One-Piece-Cap Gasket (easy how to)

#4

Post by fatherof31970 »

Excellent tutorial Dean. Going to have to give that a try.
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Replacing One-Piece-Cap Gasket (easy how to)

#5

Post by aephilli »

Now all we need to know is where to find the gaskets. (or what size punches you use to make them and what thickness of material)
Albert
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Replacing One-Piece-Cap Gasket (easy how to)

#6

Post by hurricaner »

aephilli wrote: Now all we need to know is where to find the gaskets. (or what size punches you use to make them and what thickness of material)
You can use a #205 o-ring, they work fine. Nice tutorial Dean. I have had a few that were so brittle they came out in pieces but the pick and needle nose pliers is still the best way to get them out.

Sam
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Replacing One-Piece-Cap Gasket (easy how to)

#7

Post by Krayco »

Thanks Dean...I've been putting off changing these gaskets, I didn't realize it was so easy.
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Replacing One-Piece-Cap Gasket (easy how to)

#8

Post by Murff »

Nice tutorial Dean!

Can I move it in a few days to the How-To Forum?

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flatbrokeforge
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Replacing One-Piece-Cap Gasket (easy how to)

#9

Post by flatbrokeforge »

Exactly the same way I replace them, Dean.

A set of double-ended picks with different ends, including this type, is available for under $5 at Harbor Freight tool stores. They come in handy for so many things Coleman related, including removing/replacing the gaskets on the threee-piece caps as well. The different bends on the end make for quick work removing traces of crud in small, hard to get at recesses all over GPA's during the cleaning/rebuild process.

Excellent tutorial!!
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Deanofid
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Replacing One-Piece-Cap Gasket (easy how to)

#10

Post by Deanofid »

Murff wrote: Nice tutorial Dean!

Can I move it in a few days to the How-To Forum?

Murff

Sure, and thanks Murff.

Mike at OCP doesn't have these gaskets, as far as I can tell. Maybe he will get some.
It's been mentioned before that Lonestarlantern has them on ebay.

The dimensions for the gaskets are:
.750" OD
.450-.455" ID
.120" Thick
Obviously must be fuel proof.

Dean

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curtludwig
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Replacing One-Piece-Cap Gasket (easy how to)

#11

Post by curtludwig »

I just ordered some from LoneStarLantern, quick ship, no hassle, decent price.
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