1942 Allis Chalmers C

Bookman

Member
I am working on restoring a 1942 Allis Chalmers C, and I have some questions. I am trying to get the sediment bulb assembly off, and I am not having any luck. In fact, I cannot even get the glass bulb itself off. Even after I get the holder undone, the glass seems almost melded to the metal top...after all these years. Any tricks to this.

Also, There was a pad under the tank, and the pad is shot. Is that available somewhere? If not, any suggestions what I might use for a pad under the tank.

Right now I have the head off and waiting for a mechanic to help me replaces the sleaves and pistons. One was stuck...and had a bent push rod.

It was my brother-in-laws tractor and it sat out for years. I bought it from his daughter since I thought it shame to see it go to the junk yard. Someone managed to steal the magneto and carb, but I have replacements.

Thanks in advance
 
Screw the sediment bowl assembly out of the tank and boil it in soap water with the shut off screw removed. The glass is just glued to the gasket from evaporated gas.
 
Wished I could get the sediment bulb assembly screwed out of the tank, but so far no luck. But maybe I can arrange the tank so I can soak the sediment bulb in a solvent of some sort.

Thanks
 
Check with steiner tractor parts. I think they sell some kind of pads or strips to use under fuel tanks, hoods, and radiators.

The threads on the strainer I'm guessing are full of varnish from old gas. Have you tried spraying carb cleaner on the threaded area? Might try to spray some inside the tank on the threads if you can see them through the filler cap.
 
If you get the sediment bowl off the tank, through it away and get a new one, they are available and not expensive.
 
It needs to come up one way or the other. Might need to remove the tank and get a long handled pipe wrench. You will Probly find the stem up in the tank caked with crud. It is a tapered pip thread.
 
I tried spraying carb clean in but not much luck. I have soaking the entire sediment bulb assembly in carb cleaner now. Thanks

I will check with Steiners on the webbing.
 
Yep, got the tank off. Just reluctant to give too much torque on the sediment bulb assembly. Do not want to bust something off in the tank or damage the tank. I am letting things soak for now.

Thanks
 
I have removed a bunch of them from tanks that the bottom was full of holes. Like any tapered thread the first move is the tightest. The only one that didn't come loose wouldn't have mattered because it was rusted beyond repair. Soaking a pipe thread will not help loosen the threads. The reason for tapered threads is to be able to tighten it to where it will not let anything seep thru. You might heat it without fire to expand the fitting welded into the tank.

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Once I get the tank cleaned out and any gas fumes long gone, I will try some heat. I do have a heat gun that might do the trick. Got a manifold bolt off yesterday, and I was concerned that I might break it off. I just need to be patient.

Thanks
 
Fumes will not be gone if you have rust flakes. even after washing out with water. I had one flash after it was long after washing out with water. exhaust from another tractor or lawn mower purging fumes while using fire would work. Other than that no fire please.
 

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