Float for fuel sender

[cozzmo81]

While doing the annual inspection on my Pacer this weekend I found the right fuel tank sender gasket leaking. To my surprise, when I removed the sender I found that it has been modified. At some point in time it looks like the brass float was lost. I’m looking for a replacement float for the gauge sender.61383390571__1F6BE161-04CF-4E9C-AA1B-B8BA91A1B197.jpg


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[Steve Pierce]

Probably have to find an old sending unit. The replacement sending units I have seen from Univair have that newer style float that someone modified to fit your original sender.

[cozzmo81]

Steve,
Thats what I figured. I have found some used senders online from other piper models, but I'm not sure if the brass float is the same? It amazes me what people do to these airplanes over the years. Someone also decided to replace the gascolator under the seat with this masterpiece pictured below. At least Steves Gascolator fixes this problem
.IMG_3959.JPG

[Gilbert Pierce]

Steve,
Thats what I figured. I have found some used senders online from other piper models, but I'm not sure if the brass float is the same? It amazes me what people do to these airplanes over the years. Someone also decided to replace the gascolator under the seat with this masterpiece pictured below. At least Steves Gascolator fixes this problem
.IMG_3959.JPG

That picture looks like the system used in the Champ 7BC with two wing tanks.

[akflyer]

If the gauge works with the float that is on it and available what is the issue? I have seen more than one plane that had the gascolator under the seat removed and was plumbed like that.

[cozzmo81]

If the gauge works with the float that is on it and available what is the issue? I have seen more than one plane that had the gascolator under the seat removed and was plumbed like that.

The issue is, if the correct parts are available then why do hack maintenance. I have located the brass float and it will be here this week. I also have a Steve’s gascolator to put in place of where the gascolator was supposed to be.


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[J Ryd]

The issue is, if the correct parts are available then why do hack maintenance. I have located the brass float and it will be here this week. I also have a Steve’s gascolator to put in place of where the gascolator was supposed to be.


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Not that I am advocating it, but is the reason for right ride gascolator would be to have a low point on that side to sump water/debris, etc? If so, doesn't the above "masterpiece" provide the same function? Then again, must be a reason Piper put it there.
Jan

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[andya]

You're not alone, I loose the bubble quite easily these days. Trimmer STC eliminated the gascolator under the cabin floor.
Not uncommon but the thread did digress based on a "look what else I found" post.

[cozzmo81]

Yes that is a low point in the system and the reason for the installation there. The gascolators design allows water to settle in it much easier than the tee fitting arrangement shown above. It’s also the correct part for the application. I could maybe understand if there were no other approved parts available, however that’s not the case in this situation. As the Owner of the plane and the IA certifying that the aircraft meets type design I’m happy to use the correct parts.


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[Subsonic]

J Ryd - it takes a bit of time for water to precipitate to the bottom position of any sump due to the difference in specific gravity. Approx. 0.713 for gasoline and 1.00 for pure water. It doesn't happen fast if there is any turbulence in the system. So, a precipitation sump (gascolator) is required to get the water to settle out over time. It's really due to H2O ionic bonding and natural affinity for itself. Gasoline on the other hand is covalently bonded and that's why the water always appears to separate itself so clearly when you can look into a tank. Unfortunately, they're both fluids and the water is only slightly heavier than the gasoline. Hence the need for a settling sump to allow a really low place in the system for the water to drop into. A simple intersecting/converging confluence, or T-pipe won't do it. With a sump, the settled water can be easily drained away and everything above it is pure gasoline. A simple (and stupid) converging confluence may require the drainage of a large amount, perhaps ALL of fuel before you purge all the water, if you ever do in any contained volume. Another way to look at it is this: Sumps (Gascolators) save you time and money.
-Subsonic