Marvel Schebler

[showcrop]

How do you remove a main jet seat that is rusted in place? I have in my shop a 901 that I had restored and then sold in 2017. The owner had not done anything with it since 2018, and it had a lot of rust in the float bowl and up into the main jet seat. I have been applying penetrant for two weeks and trying it periodically. I am thinking of heating it but I am concerned with getting a strong heat difference between the seat and the outer part of the housing even if I attempt to heat the whole thing. WWYD?

 

[Dieseltech]

Might try heating it in a toaster oven like I heat bearings with, maybe 3-4 hours with even heat would help. If not when hot, maybe after it's cooled again.

 

[Jim.ME]

Along the heat lines some have reported good results with putting a carb body in a pot of water and boiling it for a time.

 

[Geo-TH,In]

How do you remove a main jet seat that is rusted in place? I have in my shop a 901 that I had restored and then sold in 2017. The owner had not done anything with it since 2018, and it had a lot of rust in the float bowl and up into the main jet seat. I have been applying penetrant for two weeks and trying it periodically. I am thinking of heating it but I am concerned with getting a strong heat difference between the seat and the outer part of the housing even if I attempt to heat the whole thing. WWYD?

A few years ago the original carb on my 1950 Farmall C was leaking gas when it was running.
I know many people hate Amazon, I got an exact clone from Amazon for under $40. It has worked flawlessly.
Rebuild kits were more costly. Finding the exact gasket was my biggest challenge.
If you can't repair your carb I think there is no harm in buying a new carb.
I would look at YT parts first if you are not a fan of Amazon.

Water boils at 212 F, Try putting it in boiling oil. Oil get much hotter before it boils.

 

[Tgrasher]

Try putting in oven as suggested and then taking out and putting a four inch 5/16" bolt (or bigger) end, taken from a freezer, on the seat to do a quick heat loss.

 

[JIM MN]

Geo-IN ,In- Do you know the carburetor in your attachment is a Zenith? Show crop is working with a Marvel Schebler? Maybe he can find that carb on Amazon too? To get the main jet seat out; Heat by some source.
let cool and repeat?





?

 

[teddy52food]

How do you remove a main jet seat that is rusted in place? I have in my shop a 901 that I had restored and then sold in 2017. The owner had not done anything with it since 2018, and it had a lot of rust in the float bowl and up into the main jet seat. I have been applying penetrant for two weeks and trying it periodically. I am thinking of heating it but I am concerned with getting a strong heat difference between the seat and the outer part of the housing even if I attempt to heat the whole thing. WWYD?

If it is cast iron, boil it in lye water for a while.

 

[scootergmc]

Geo-IN ,In- Do you know the carburetor in your attachment is a Zenith? Show crop is working with a Marvel Schebler? Maybe he can find that carb on Amazon too? To get the main jet seat out; Heat by some source.
let cool and repeat?





?

I don't know if he edited it, but in the picture that's attached right now is a Marvel clone for sure, not a Zenith.

 

[scootergmc]

How do you remove a main jet seat that is rusted in place? I have in my shop a 901 that I had restored and then sold in 2017. The owner had not done anything with it since 2018, and it had a lot of rust in the float bowl and up into the main jet seat. I have been applying penetrant for two weeks and trying it periodically. I am thinking of heating it but I am concerned with getting a strong heat difference between the seat and the outer part of the housing even if I attempt to heat the whole thing. WWYD?

Are you talking about #26?

 

[showcrop]

Are you talking about #26?

No, #24

 

[scootergmc]

So the nozzle itself is not coming out with a 1/4" drive socket (I think it's 3/8") and wrench? If not, I'd put the 1/4" adapter on my Milwaukee M12 impact gun and try that.

Otherwise, I also have a pencil torch for heating very small areas, though I've never had to use it on the nozzle.

 

[stevieb49829]

The tube will indeed snap off just above the threads if you try too hard. Then its a careful drill out and chase the threads with a 1/4-28 tap. Just don't drill out the jet below it, which hardly ever comes out easily. I think the bake, cool, and bake again avenue might work. The dissimilar metals have different expansion rates. Add in some good penetrant as it cools. Might just be the ticket. steve

 

[petertay]

We also bought a clone on Amazon for our Ford NAA. Works fine.

 

[greenmech]

How do you remove a main jet seat that is rusted in place? I have in my shop a 901 that I had restored and then sold in 2017. The owner had not done anything with it since 2018, and it had a lot of rust in the float bowl and up into the main jet seat. I have been applying penetrant for two weeks and trying it periodically. I am thinking of heating it but I am concerned with getting a strong heat difference between the seat and the outer part of the housing even if I attempt to heat the whole thing. WWYD?

I would just heat the jet with a torch and let it cool. should come out easy then. Ron MN

 

[stevieb49829]

I would just heat the jet with a torch and let it cool. should come out easy then. Ron MN

I would heat the cast iron way down where the jet threads in. Although brass transfers heat well, it might not get hot enough at the thread end to loosen it up.

 

[Mike(NEOhio)]

I've taken a few out just by heating it with a propane torch, just till it smoked when you remove the flame. Use a good deep well socket.

 

[Geo-TH,In]

Geo-IN ,In- Do you know the carburetor in your attachment is a Zenith? Show crop is working with a Marvel Schebler? Maybe he can find that carb on Amazon too? To get the main jet seat out; Heat by some source.
let cool and repeat?





?

If you read my post I said I replaced the carb is what my Farmall C which uses a zenith. .

Did you look for a replacement carb on Amazon??
My point was if you can't boil it in oil and repair it you can buy aftermarket carbs from Amazon and other places much cheaper.
Amazon

8N9510C-HD Marvel Schebler Carburetor Fits For Ford Tractor 2N 8N 9N 1939-1952 TSX33 TSX241A TSX241B TSX241C Replaces B3NN9510A 8N9510C 9N9510A Carb $32​

 

[showcrop]

If you read my post I said I replaced the carb is what my Farmall C which uses a zenith. .

Did you look for a replacement carb on Amazon??
My point was if you can't boil it in oil and repair it you can buy aftermarket carbs from Amazon and other places much cheaper.
Amazon

8N9510C-HD Marvel Schebler Carburetor Fits For Ford Tractor 2N 8N 9N 1939-1952 TSX33 TSX241A TSX241B TSX241C Replaces B3NN9510A 8N9510C 9N9510A Carb $32​

And rarely does a week go by without a poster telling about his problem with the amazon carburetor. No thanks.

 

[DaveBN]

Maybe heat it up a little then try to get some wax from a candle to melt down into the threads.
Dave

 

[Ozlander]

We also bought a clone on Amazon for our Ford NAA. Works fine.

X2