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Conditon of Carb on '46 B

J

jkmdg84

Member
I bought a '46 B at an estate sale last weekend. The tractor runs and is in fair condition. This is going to become my amateur restore project. After really giving it a good lookover I have some concerns over the condition of the carb. After I run it sometimes, a darkish color of gas sometimes drips from one of the screws. I don't know much about carbs. I am looking for some help on whether you folks think that it just needs a good tune-up/restoration, or a complete replacement. Here are some things I have already done before I typed this up:

1. Ran the tractor to use up all the old gas in the tank when I bought it.
2. Put some new gas in, cleaned out the sediment bowl, and drove it around for an hour.

If it just needs a restoration kit--what would you folks recommend would be the kit for me? I have looked around at a lot of the restoration websites and every one of them seems to have many different types of carb restoration kits.

Here are some pictures to help out (hopefully they show up). I appreciate it!
a111832.jpg

a111833.jpg

a111834.jpg
 
That not an original carb that was used on your B when it was new. Before taking it apart i would take it to where you are going to get new gaskets so they can see which model it is as there should be a plate with the carbs #.
 
It actually drips from the nut that is underneath everything that is angled towards the front wheels. I'm pretty sure it is gas as I have wiped off a big drop and it smelled like it.
 
I would just rebuild the carb and be dome with it. Most of the time a basic kit is all a guy needs to do the job. I get my kits at O'Reilly's auto and they carry Walker brand kits which seem to be pretty good
 

Somewhere on that carb will be a small, round, maybe brass, tag with the carburetor model number stamped into it. Without that number, all of us are just shooting in the dark.
 
Do the rebuild kits come with pretty good instructions on how to put together and set the new carb? It shouldn't be too much of a problem to rebuild if I have instructions to reference.
 
Yes the kits I buy from O'Reilly's have good instruction sheets in them with a blow up picture of where the parts go. Most of the kits are made to fit more them one carb so you will have left over parts but that I have found is a good thing but I also do a lot of carbs and having extra parts on hand saves me a lot of $$ over the years.
 
(quoted from post at 08:17:17 04/17/13) Do the rebuild kits come with pretty good instructions on how to put together and set the new carb? It shouldn't be too much of a problem to rebuild if I have instructions to reference.
Click to expand...

Most of the kits I am familiar with have only basic instructions, lifted directly from an I&T manual. Very little actual detail.
 
So if I rebuild it, what would be the best way to go about it? Should I rip the whole carb out and soak it in carb cleaner for a few days, then unassemble, rebuild, and reinstall?

The shop manual for a B doesn't go into much detail with that.
 
(quoted from post at 09:03:25 04/17/13) So if I rebuild it, what would be the best way to go about it? Should I rip the whole carb out and soak it in carb cleaner for a few days, then unassemble, rebuild, and reinstall?

The shop manual for a B doesn't go into much detail with that.
Click to expand...

The shop manual is written for folks who have already gone through a training course and have SOME experience. The only thing they need from the manual is the proper float height settings and initial adjustments.

You might want to search for some auto mechanics training text books that are relevant to that era. Look for those that are written by "William H. Crouse", and published by "McGraw-Hill"
 
#1 you never rip parts off or they will not go back on right LOL
#2 to disassemble it then put in carb cleaner for 24 hours or so. Then need a can or 2 of spray carb cleaner a small wire or what I use is a torch tip cleaner tool to poke in all the jets and passage ways and compressed air to blow things out. The carb look easy to rebuild but if you have never done it before they can prove to be very hard to do
 
Buy a gallon bucket of "Berryman's CHEM-DIP" at Walmart or any auto parts store. It comes with a strainer so you can put the disassembled carb parts in the strainer, and drop them into the bucket for a soak.
 

Berryman's is as about as good as brake fluid, which is not much good at all for cleaning carburetors. Fresh brake fluid will remove paint from the carb. The Berryman's will NOT.

Thanks to the EPA, GOOD carb cleaner no longer exists.


The best method I have found is to place the dis-assembled carburetor in a large pot, add water until the parts are covered, add a generous amount of laundry detergent with a degreaser additive, and then BOIL it for about 2 hours. Finish the job with some aerosol carb and choke cleaner.
 
If thats where the drip comes from a new fibre washer washer will cure the problem shut the gas off and remove the plug then take it to a carb shop and they would have a new one or i can send you a new washer. There is no need to tear the carb down if thats all thats wrong.
 
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