The Ford Barn

harryc · 12-26-2022, 05:55 PM

nut on cast iron sediment bowl is rusted solid. any simple ideas for removal. I am not going to try heating with a torch

stevests · 12-26-2022, 07:11 PM

What nut ? The screen access port ?

rotorwrench · 12-27-2022, 10:29 AM

Dissimilar metals can get some corrosion build between the lower cap if it's brass and the sediment bowl (cast iron). If both are cast iron then disregard. It will need several heating and cooling cycles to free it up. It doesn't take much more than the temperature of boiling water to free things up sometimes. Put it in a sauce pan with water and bring it to a boil then let it cool down. It may take several times to free it up. Carefully take the hot assembly and put it in the freezer to further shock the threaded fit up. Expansion and contraction will free most things up. I use the torch on bolts and non fuel related fasteners but some just have to be cut off if the corrosion is extensive. A person can use heat on fuel related parts but all traces of the fuel have to be removed before heating or welding on a fuel related assembly.

The late type sediment bowls also have a packing nut for the valve. Is this an early type or a late type sediment bowl? There is a difference in the size and placement of the screen caps.

This is a good link.
https://www.mtfca.com/model_t_encycl...ediment-bowls/

harryc · 12-27-2022, 06:45 PM

the problem is it's still attached to the firewall-----not much accessibility under the gas tank

harryc · 12-27-2022, 06:59 PM

sorry wrong thread !!

redmodelt · 12-27-2022, 09:03 PM

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Oh Model A! Happens. Try and find a socket or box wrench that will grab at all the corners and give that a try after soaking with Kroll or other real penetrating oil. Might also use a brass wire brush to clean the thread some first.

Robert/Texas · 12-28-2022, 07:27 AM

I'm a believer in using a mixture of 50/50 acetone and ATF for these kind of problems. This has always works better for me than the stuff that comes in the squirt cans.

39portlander · 01-02-2023, 09:54 AM

induction innovations mini-ductor, purge with nitrogen while heating up the nut and surrounding area.

12-26-2022, 05:55 PM	#1
harryc Senior Member Join Date: Sep 2012 Location: CA Posts: 206	sediment bowl removal ideas nut on cast iron sediment bowl is rusted solid. any simple ideas for removal. I am not going to try heating with a torch

12-26-2022, 07:11 PM	#2
stevests Senior Member Join Date: May 2010 Location: Longbranch, Washington Posts: 513	Re: sediment bowl removal ideas What nut ? The screen access port ?

12-27-2022, 10:29 AM	#3
rotorwrench Senior Member Join Date: Jun 2010 Location: San Antonio, Texas Posts: 16,440	Re: sediment bowl removal ideas Dissimilar metals can get some corrosion build between the lower cap if it's brass and the sediment bowl (cast iron). If both are cast iron then disregard. It will need several heating and cooling cycles to free it up. It doesn't take much more than the temperature of boiling water to free things up sometimes. Put it in a sauce pan with water and bring it to a boil then let it cool down. It may take several times to free it up. Carefully take the hot assembly and put it in the freezer to further shock the threaded fit up. Expansion and contraction will free most things up. I use the torch on bolts and non fuel related fasteners but some just have to be cut off if the corrosion is extensive. A person can use heat on fuel related parts but all traces of the fuel have to be removed before heating or welding on a fuel related assembly. The late type sediment bowls also have a packing nut for the valve. Is this an early type or a late type sediment bowl? There is a difference in the size and placement of the screen caps. This is a good link. https://www.mtfca.com/model_t_encycl...ediment-bowls/ Last edited by rotorwrench; 12-27-2022 at 10:37 AM.

12-27-2022, 06:45 PM	#4
harryc Senior Member Join Date: Sep 2012 Location: CA Posts: 206	Re: sediment bowl removal ideas the problem is it's still attached to the firewall-----not much accessibility under the gas tank

12-27-2022, 06:59 PM	#5
harryc Senior Member Join Date: Sep 2012 Location: CA Posts: 206	Re: sediment bowl removal ideas sorry wrong thread !!

12-27-2022, 09:03 PM	#6
redmodelt Senior Member Join Date: May 2010 Location: Portland OR Posts: 6,342	Re: sediment bowl removal ideas Sponsored Links (Register now to hide all advertisements) Oh Model A! Happens. Try and find a socket or box wrench that will grab at all the corners and give that a try after soaking with Kroll or other real penetrating oil. Might also use a brass wire brush to clean the thread some first. __________________ I know the voices aren't real but damn they have some good ideas!

12-28-2022, 07:27 AM	#7
Robert/Texas Senior Member Join Date: May 2010 Location: Burton, Texas Posts: 681	Re: sediment bowl removal ideas I'm a believer in using a mixture of 50/50 acetone and ATF for these kind of problems. This has always works better for me than the stuff that comes in the squirt cans.

01-02-2023, 09:54 AM	#8
39portlander Senior Member Join Date: May 2010 Location: Suth'N Maine Posts: 1,996	Re: sediment bowl removal ideas induction innovations mini-ductor, purge with nitrogen while heating up the nut and surrounding area.