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Subject: Removing rust inside of carburator

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NTP    Posted 08-28-2017 at 23:39:39 [URL] [DELETE]        [Reply] [Email]  
  • Removing rust inside of carburator
  • Was cleaning my carb and there was a lot of rust inside the "bowl area". What is best to use for rust removal? I took apart another N carb and it was in the same condition. The first one came off a running tractor that had gas in the system forever.

    Tim Daley(MI)    Posted 08-29-2017 at 08:49:53 [URL] [DELETE]        [Reply] [No Email]  
  • Re: Removing rust inside of carburator
  • I use white vinegar to remove old paint, grease, rust, and overall crud from parts I donít want to diminish the patina on but only if I have no time constraints as it takes a few weeks to work well, 2 or 3 months for best results. Keep container covered as it will evaporate otherwise. I usually will put carbs in a coffee can after initial scrubbing and air blasting real good, then disassembling the two halves and removing all the parts and pouring mineral spirits in until fully covered. Iíll soak for at least a week. Then remove, air blast out real good, and soak in carb cleaner for a day or two, then air blast out real good and dry. Thereís more intricate cleaning involved with hold guitar strings run thru the orifices and chasing all the threads with taps, but then I will paint them and after the paint fully dries, reassemble, set jets, and test/tweak on a tractor. My recent project involves two M/S TSX-33 carbs. I had access to my buddyís sand blaster so I nailed both carbs real good, air blasted, washed out in mineral spirits, air blasted, washed in carb cleaner, air blasted again then let dry before going in the paint booth. You may ask why so much air blasting? Iím always leery of sand blasting engine parts. The worst thing you can have running around in an engine is sand. By the way, never paint the insides of the carbs or engines for that matter. Anyway, hereís before and after pix:

    MARVEL-SCHEBLER TSX-33 CARBURETORS AFTER SAND BLAST:

    ...and IN THE PAINT BOOTH:

    Wayne N Ind.    Posted 08-30-2017 at 18:25:11 [URL] [DELETE]        [Reply] [Email]  
  • Re: Removing rust inside of carburator
  • Looks good tim. I should sent you a box of them.

    TheOldHokie    Posted 08-29-2017 at 15:31:35 [URL] [DELETE]        [Reply] [No Email]  
  • Re: Removing rust inside of carburator
  • Abrasive blasting is standard procedure in engine rebuilding shops. They don't use sand or other friable abrasives however - they generally use steel shot. You can find small quantities of just about any grade you want online with a little searching. Here is one source:

    Steel Shot Blast Media

    TOH

    Tim Daley(MI)    Posted 08-29-2017 at 18:15:35 [URL] [DELETE]        [Reply] [No Email]  
  • Re: Removing rust inside of carburator
  • Yep, media abounds, steel shot, crushed walnuts, ceramics, et al. My buddy just uses the sand. I forgot mention too I first put the parts in his tumbler. Sometimes a tumbler will do a better job. We used them a lot especially on GM bearing caps as they came off the line. Great deburring machine too.

    Tim Daley(MI)

    Farmer Dan    Posted 08-29-2017 at 08:06:30 [URL] [DELETE]        [Reply] [Email]  
  • Re: Removing rust inside of carburator
  • I would soak it in white vinegar for a few days. Then scrub with a stiff brush and rinse it out real good because it will smell funny.

    TheOldHokie    Posted 08-29-2017 at 08:02:21 [URL] [DELETE]        [Reply] [No Email]  
  • Re: Removing rust inside of carburator
  • An abrasive blaster.

    TOH

    Tim Daley(MI)    Posted 08-29-2017 at 05:45:45 [URL] [DELETE]        [Reply] [No Email]  
  • Re: Removing rust inside of carburator
  • Rust is the oxidation process when ferrous metals react to oxygen and or water. The rust is forming either by water getting into the carb from setting for long periods of time or rust inside the gas tank is getting through the three screens in the fuel system, or both. Preventative Maintenance is a must on these vintage Ford Tractors. The Manual states if the tractor is to be idle for 30 days or more, the entire fuel system including the tank should be drained and every 60 working hours, the carburetor and fuel line drained. The carburetor has a drain plug on the bottom and removing it then opening the Sediment Bulb Valve all the way to the RESERVE setting will let old gas and condensation in the carb flow out. Additionally, three inline filters need to be cleaned regularly as well. The carburetor fuel line inlet brass elbow holds one of them and you need to remove the fuel line first then unscrew it from the carb. The other two are in the Fuel Sediment Bulb assembly. One can be cleaned by loosening the bail fastener on the bottom, removing the glass jar and dumping out the fuel in there and cleaning it good, then the large brass fine mesh screen can be cleaned or replaced. Reassembly should include a new screen but a new cork gasket should be installed now as well. Some new aftermarket gaskets are made of rubber and I've had leaking issues with them so I use the original cork style gaskets and never have leaks. Here are some pages from the Ford-Ferguson handbook on operation and care.


    Tim Daley(MI)

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